Add release v2.9.0

A crucial dependency does not support them any more

.dockerignore

@@ -0,0 +1,13 @@
+# Git status should be ignored
+.git
+
+# .dockerignore should be ignored
+.dockerignore
+
+# Almost all of the reweave directory 
+# should be ignored
+reweave/build/Dockerfile
+reweave/tools/
+reweave/scans/
+reweave/Makefile
+reweave/*.md

.github/workflows/github-pages-publish.yml

@@ -0,0 +1,53 @@
+# Workflow for building and deploying a Jekyll site to GitHub Pages
+name: Build using Jekyll, deploy to GitHub Pages
+
+on:
+  # Runs on pushes targeting the master branch, if changes found in
+  # the website directory
+  push:
+    branches: ["master"]
+    paths: ["website/**"]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  # Build job
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+      - name: Build with Jekyll
+        uses: actions/jekyll-build-pages@v1
+        with:
+          source: ./website/
+          destination: ./_site
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+
+  # Deployment job
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -73,6 +73,3 @@ test/images/network-tester/webserver
 terraform.tfstate
 terraform.tfstate.backup
 prog/net-plugin/rootfs/
-
-# Website
-site-build

.lintignore

@@ -4,7 +4,6 @@
 # avoid breaking the build on make lint:
 bin/circle-deploy-issues
 bin/circle-deploy-master
-bin/circle-teardown-pre
 bin/circle-test-teardown
 bin/circle-test-unit
 bin/install-wordepress

.ruby-version

@@ -1 +0,0 @@
-2.3.0

CHANGELOG.md

@@ -1,3 +1,339 @@
+## Release 2.9.0
+
+This release has upgraded dependencies based on CVE recommendations.
+
+Also, from this release onwards, all weave images will use the `iptables-nft` backend for `iptables` by default. To use the legacy mode, set the environment variable `IPTABLES_BACKEND` to `legacy`. To do this for the Docker plugin, export the variable before using the `weave` script. For the Kubernetes addon, set the variable in the manifest.
+
+## Release 2.8.10
+
+This release bumps the Go version to 1.23.1 and the alpine base image to version 3.20.3 as per CVE recommendations.
+
+## Release 2.8.9
+
+This release bumps the Go version to 1.22.2, the alpine base image to version 3.20.2, and upgrades a dependency as per CVE recommendations.
+
+## Release 2.8.8
+
+The alpine base image used by `weave-kube` and `weave-npc` has been upgraded to version 3.20.0 in this release. This removes several CVEs.
+
+## Release 2.8.7
+
+This release has upgraded dependencies based on CVE recommendations.
+
+Also, this release does not provides images for the `ppc64le` and `s390x` architectures, because a crucial upstream dependency (libpcap-0.8, from the debian buster respository) does not provide binaries for those architectures any more.
+
+## Release 2.8.6
+
+From this release onwards, the Docker V2 Plugin will be published for all supported architectures. It will be named using the pattern `rajchaudhuri/net-plugin:<version>-<arch>`. The latest version will also be published as `rajchaudhuri/net-plugin:latest_release-<arch>`. Supported architectures are `amd64`,`arm`,`arm64`,`ppc64le` and `s390x`. It can be installed on a Swarm-mode-enabled Docker host as follows:
+
+```bash
+ARCH=$(docker version -f '{{.Server.Arch}}')
+docker plugin install rajchaudhuri/net-plugin:latest_release-$ARCH
+```
+
+## Release 2.8.5
+
+This release has upgraded dependencies based on CVE recommendations.
+
+* Build with Go version 1.21.9
+* A dependency has been updated
+
+## Release 2.8.4
+
+The alpine base image used by `weave-kube` and `weave-npc` was upgraded to version 3.19.1 in the previous release. In this version, the default iptables backend is nftables, and the legacy backend is not included. Our scripts and programs assume legacy as the default backend, and change to nft if autodetected, or if we ask for it. So, the build Dockerfile (reweave/build/Dockerfile) was changed to also install the Alpine `iptables-legacy` package , and change the `iptables-{save,restore}` symbolic links to point to the legacy backend by default.
+
+The `weave-kube` and `weave-npc` images can now log traces if the environment WEAVE_DEBUG is set in the manifest.
+
+## Release 2.8.3
+
+The docker API client version, used by the proxy package and the weaveutil command, was bumped from 1.18 to 1.24. As of March 2024, Docker API versions below 1.24 are deprecated. This means that the minimum supported Docker version is now 1.12.0.
+
+Provision was made in weaveutil program and the weave script to override the API version used, via the environment variable `DOCKER_API_VERSION`. The same variable is used by standard docker clients.
+
+## Release 2.8.2
+
+This is the first release since forking from weaveworks/weave. While no new functionality has been added, there have been many changes.
+
+* Build with Go version 1.21.6
+* Dependencies, especially ones with associated CVEs, have been updated
+* libCNI has been upgraded to v1.1.2
+* A new, Docker-only build process has been created, which produces proper multi-arch images
+* A vulnerability scanning process has been created using [grype](https://github.com/anchore/grype)
+
+## Release 2.8.1
+
+Fixes a problem introduced in 2.8.0 for machines whose ID is in /etc/machine-id #3886
+Many thanks to contributor @avestuk for this fix.
+
+Also move Kubernetes API calls out of Weave Net daemon #3885
+- this reduces the size of the 'weaver' binary and stops it crashing when run on 32-bit ARM.
+
+## Release 2.8.0
+
+This release makes some important changes to trim the "attack surface" of the
+Kubernetes install, and improves a couple of reported issues.
+
+* Workaround to fix ipset conflict with iptables #3851, #3882
+* Kubernetes: move kernel and CNI setup to init container #3880
+* For K8s, stop running in host PID namespace #3876
+* NetworkPolicy: avoid logging dropped packets that were not actually dropped #3852
+* Build with Go version 1.15.6 #3883
+
+Many thanks to contributors @drigz, @KevDBG and @NeonSludge.
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/87?closed=1)
+
+## Release 2.7.0
+
+This release improves resiliency in a number of areas,
+and extends the Prometheus metrics exported by Weave Net.
+
+Change in behaviour: on Kubernetes, the client source IP is preserved 
+when calling from a pod to a service.
+This feature, introduced in version 2.4.0 and previously turned on by 
+setting `NO_MASQ_LOCAL=1` is now on by default. #3389, #3756
+
+### Features
+
+* Reload router iptables rules if they get cleared, e.g. when firewalld restarts. #3802
+  (weave-npc rules are not reloaded)
+* Add new `type` and `encryption` labels to `weave_connections` metric #3788, #3789
+* Weave Net now exports Go metrics for heap size, garbage collection, etc. #3838
+* Register container name and its network aliases with weaveDNS #3084, #3090
+* Make DNS listen address configurable #1770, #3231
+
+### Bug fixes
+
+* weave-npc could crash if you deleted a Kubernetes Namespace containing pods #3833, #3836
+* Ensure that weave-npc exits and restarts if it crashes #3764, #3792, #3841
+* Avoid weave-kube failing on startup due to iptables lock #3828, #3835
+
+### Build and test
+
+* Reduce size of containers (weaveworks/weave goes from 99MB to 83MB) #3624, #3726
+* Weave Net is now built with Go 1.14.4, which should improve performance #3838
+* CI tests are now run against Docker 19.03.1, Kubernetes 1.14.0 #3687
+
+Many thanks to contributors @berlic, @gobomb, @hairyhenderson, @naemono, @nesc58
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/81?closed=1)
+
+
+## Release 2.6.5
+
+Fixes a bug that would leak memory every time a fast-datapath connection
+was stopped. #3808
+Also avoid a crash when the machine has ipv6 disabled. #3815
+
+
+## Release 2.6.4
+
+Improves the iptables rule added in 2.6.3 to block just the Weave Net
+control port and avoid blocking other uses of 127.0.0.1.	#3811
+
+
+## Release 2.6.3
+
+This release has a couple of security improvements, and some other fixes.
+
+* Block non-local traffic to the Weave control port	#3805
+* Tell Linux not to accept router advisory messages	#3801
+* Network Policy Controller: add a metric to show errors while operating	#3804
+* Network Policy Controller: don't treat named port as a fatal error	#3790
+
+## Release 2.6.2
+
+This release fixes a regression found in 2.6.1 release and removes a possible case
+of CPU spinning when pcap is used in sleeve mode
+
+### Bug fixes
+
+* Weave Net can not be used in fastdp mode and always falls back to sleeve mode #3781, #3783
+* Restrict timeout value passed to pcap library to a value less than 2^31 microseconds to
+  prevent CPU spinning #3782
+
+## Release 2.6.1
+
+This release fixes a bug discovered since the release of Weave Net 2.6.0 and
+an improvement to support iptables 1.8
+
+### Bug fixes
+
+* Weave Net on node restart unable to form connections to peers and connections get stuck in
+  pending state and stops responding to API endpoint #3762 #3763
+
+### Other improvements
+
+* Weave Net Kubernetes images by default uses iptables 1.8 with legacy (netfilter) backend with
+  option to choose netfilter as backend #3465, #3747
+
+
+## Release 2.6.0
+
+This release reduces CPU and memory usage in larger clusters, by
+sending notifications to a smaller set of peers and coalescing updates
+to reduce topology recalculation. #3715, #3732
+
+The default soft limit on connections has been raised from 100 to 200.
+
+### Bug fixes
+
+* Fix a race condition in Kubernetes addon when reclaiming IP
+  addresses after node deletion #3724, #3716
+* Buffer events so Docker won't drop them, and Weave Net can clean up
+  after dead containers #3432, #3705
+* Weave reconnect occasionally fails after network interface
+  disconnect #3666, #3669, #3676
+* Ingress NetworkPolicy would accepts all traffic when specifying both
+  IPBlock and port #3653, #3654
+
+### Kubernetes improvements
+
+* Support both podSelector and namespaceSelector in NetworkPolicy #3312, #3647
+* Only add default-drop egress rule if network policies are in use #3639
+* Manifests use 'apps/v1' rather than deprecated 'apps/v1beta1' #3660
+* Avoid Weave Net pods being evicted by setting priorityClassName: system-node-critical #3697
+* Manifests use recommended DNS policy ClusterFirstWithHostNet #3692
+* Weave Net now tolerates 'NoExecute' taint #3655
+* Allow extra arguments to NetworkPolicy controller to be set in an environment variable #3683
+* Stop reporting a failure to connect to self #3454, #3585
+* Minor reduction in log noise when reclaiming IPs #3710
+
+### Other improvements
+
+* Avoid isolating nodes which have restarted by automatically
+  repairing inconsistencies in IP allocation data #1962, #3637, #3708
+* Build Weave Net for the s390x architecture #3685
+* When a IP address is requested that may be in use, make several
+  attempts to claim it before returning an error #3725
+* Improve logging for IP allocation updates #3627, #3630
+* Improve 'expecting PMTU update' log message on initial connection #3603
+
+### Build and test
+
+* Shut down Kubernetes on node when testing node deletion #3716
+* Update the base 'Alpine' container image to version 3.8 #3701
+* Update Go to version 1.13.3 #3712
+* Update gopacket library #3590
+* Pin busybox version to 1.28 to avoid CI failure in Python test #3689
+* Remove obsolete weave-daemonset.yaml file #3674
+
+Thanks to contributors @christian-2, @hpdvanwyk, @guirish, @kitt1987,
+@mmerrill3, @Pensu, @scritchley, @sidharthsurana, @tanishq-dubey
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/78?closed=1)
+
+
+## Release 2.5.2
+
+This release fixes several bugs causing inconsistencies in IPAM and fixes a 
+panic in daemon that reclaims and forgets deleted nodes in Kubernetes clusters.
+
+### Bug fixes
+
+* leaking IP addresses in IPAM when weave-net hangs or restarting #3587, #3638
+* Panic in kube-utils after config map update error resulting in reclaim daemon
+  not performing weave forget on deleted node #3613, #3623
+* preventing inconsistent IPAM entries and resolving the conflict in case of
+  conflict during IPAM ring merge #3629, #3635, #3632, #3444
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/79?closed=1)
+
+
+## Release 2.5.1
+
+This release fixes bugs reported for 2.5 release and small improvements.
+
+### Bug fixes
+
+* prevent warnings in kernal logs due to use of physdev model for
+  non-bridged traffic #3449, #3453
+* Check and report the error occurred while getting the list of Kubernetes 
+  peers #3581, #3582
+
+### Other improvements
+
+* Update Ruby version to match Weaveworks website #3458
+* Fix the link to "Troubleshooting the Kubernetes Addon" section in the docs #3461
+* Document concept of connection limit in Weave #3395, #3413
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/77?closed=1)
+
+
+## Release 2.5.0
+
+This release adds support for Kubernetes `hostPort` mapping (#3016,#3356)
+and the `ipBlock` NetworkPolicy feature (#3168,#3367)
+
+### Bug fixes
+
+* Fix a crash at start-up on Docker for Mac #3405, #3408
+* Network policy: block ingress traffic when no namespaceSelector or
+  podSelector is specified #3347
+* Reclaim IP addresses which are locked by a non-existent peer #3386, #3416
+* Fix a crash when blank IP data was loaded #3067, #3415
+
+### Other improvements
+
+* If a connection is downgraded to the slower "sleeve" mode, Weave Net
+  will now periodically try to upgrade it to "fast datapath" again. #1737, #3385
+* Reclaim removed Kubernetes nodes' IP space when they are deleted,
+  rather than on next restart #3372, #3399
+* Replace Kubernetes livenessProbe with readinessProbe, so the pod is
+  not killed if it runs slowly #3471, #3421
+* In Kubernetes NetworkPolicy controller, remove the need to maintain
+  a set of local pod IP addresses #3344, #3423
+* Don't crash on Kubernetes named port in NetworkPolicy, just report as unsupported #3375
+* Ensure the `weave` network bridge is accessible on Linux kernels
+  older than 3.14 #3442, #3297, #3239
+* Better reporting in the logs if the `weave` network device is in the Down state #3133, #3381
+* Change log-level to debug of calls through the Docker proxy, to reduce noise #3439
+* Add `--without-masquerade` option to `weave expose`, so external
+  services can see the original container IP address #3388
+* Include Kubernetes cluster information in checkpoint call #3324,#3431
+* Bump go-odp dependency, so that `fastdp` works on the 4.19 kernel #3430
+
+### Build and Testing
+
+* CI builds on master branch now publish images for all platforms
+* Fix golint path and use https for download of libpcap #3435
+* Update Kubernetes client-go to v8.0.0, removing code licenced under LGPL3 #3358,#3366
+* Migrate CircleCI to V2, which is much faster #3255,#3270
+
+### External Contributors
+
+Thanks to the following contributors:
+
+* @Ashiroq
+* @leprechau
+* @lkpdn
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/74?closed=1)
+
+
+## Release 2.4.1
+
+This release fixes several bugs causing inconsistencies in IPAM for
+Kubernetes users whose clusters scale up and down over time.
+
+### Bug fixes
+
+* Nodes unable to connect after Kubernetes addon erroneously reclaimed
+  node without any IP addresses #3392, #3393
+* Kubernetes addon could have run out of free IP addresses after nodes
+  are deleted #3384, #3400
+* Kubernetes addon had reduced free IP addresses due to not reclaiming
+  IP addresses when node name is re-used #3397
+
+### Other improvements
+
+* Support `--label` in `WEAVE_DOCKER_ARGS` when starting Weave #3370,#3371
+* Add missing `--token` argument in help for `weave launch` #3226, #3379
+* Print defunct processes after smoke-tests #3362
+
+[Full list of changes](https://github.com/weaveworks/weave/milestone/75?closed=1)
+
+
 ## Release 2.4.0
 
 This release introduces a support for Kubernetes Egress Network Policy (#2624, #3313)

CONTRIBUTORS

@@ -1,5 +0,0 @@
-This file lists all individuals having contributed content to the
-repository.
-
-Matthew Sackman <matthew@wellquite.org>
-Matthias Radestock <matthias.radestock@gmail.com>

COPYING.LGPL-3

@@ -0,0 +1,175 @@
+./test/assert.sh is a copy of
+
+	https://github.com/lehmannro/assert.sh/blob/master/assert.sh
+
+Since it was imported from its original source, it has only received
+cosmetic modifications. As it is licensed under the LGPL-3, here's the
+license text in its entirety:
+
+
+
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
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+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
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+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
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+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
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+engineering for debugging such modifications, if you also do each of
+the following:
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+   the Library is used in it and that the Library and its use are
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+
+   d) Do one of the following:
+
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+       the Linked Version to produce a modified Combined Work, in the
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+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
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+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
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+  5. Combined Libraries.
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+  You may place library facilities that are a work based on the
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+choice, if you do both of the following:
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+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
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+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
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+permanent authorization for you to choose that version for the
+Library.

DEPENDENCIES

@@ -1,3 +1,3 @@
-DOCKER_VERSION=17.06
-KUBERNETES_VERSION=1.11.0
-KUBERNETES_CNI_VERSION=0.6.0
+DOCKER_VERSION=19.03.1
+KUBERNETES_VERSION=1.14.0
+KUBERNETES_CNI_VERSION=0.7.5

Gopkg.lock

@@ -1,782 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  branch = "master"
-  name = "github.com/Azure/go-ansiterm"
-  packages = [
-    ".",
-    "winterm"
-  ]
-  revision = "d6e3b3328b783f23731bc4d058875b0371ff8109"
-
-[[projects]]
-  name = "github.com/Microsoft/go-winio"
-  packages = ["."]
-  revision = "7da180ee92d8bd8bb8c37fc560e673e6557c392f"
-  version = "v0.4.7"
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-    "pkg/runtime/serializer/versioning",
-    "pkg/selection",
-    "pkg/types",
-    "pkg/util/cache",
-    "pkg/util/clock",
-    "pkg/util/diff",
-    "pkg/util/errors",
-    "pkg/util/framer",
-    "pkg/util/intstr",
-    "pkg/util/json",
-    "pkg/util/net",
-    "pkg/util/runtime",
-    "pkg/util/sets",
-    "pkg/util/uuid",
-    "pkg/util/validation",
-    "pkg/util/validation/field",
-    "pkg/util/wait",
-    "pkg/util/yaml",
-    "pkg/version",
-    "pkg/watch",
-    "third_party/forked/golang/reflect"
-  ]
-  revision = "210bcde8e5a7715fe776460ca1df1a3f2738725e"
-
-[[projects]]
-  name = "k8s.io/client-go"
-  packages = [
-    "discovery",
-    "kubernetes",
-    "kubernetes/scheme",
-    "kubernetes/typed/admissionregistration/v1alpha1",
-    "kubernetes/typed/admissionregistration/v1beta1",
-    "kubernetes/typed/apps/v1",
-    "kubernetes/typed/apps/v1beta1",
-    "kubernetes/typed/apps/v1beta2",
-    "kubernetes/typed/authentication/v1",
-    "kubernetes/typed/authentication/v1beta1",
-    "kubernetes/typed/authorization/v1",
-    "kubernetes/typed/authorization/v1beta1",
-    "kubernetes/typed/autoscaling/v1",
-    "kubernetes/typed/autoscaling/v2beta1",
-    "kubernetes/typed/batch/v1",
-    "kubernetes/typed/batch/v1beta1",
-    "kubernetes/typed/batch/v2alpha1",
-    "kubernetes/typed/certificates/v1beta1",
-    "kubernetes/typed/core/v1",
-    "kubernetes/typed/events/v1beta1",
-    "kubernetes/typed/extensions/v1beta1",
-    "kubernetes/typed/networking/v1",
-    "kubernetes/typed/policy/v1beta1",
-    "kubernetes/typed/rbac/v1",
-    "kubernetes/typed/rbac/v1alpha1",
-    "kubernetes/typed/rbac/v1beta1",
-    "kubernetes/typed/scheduling/v1alpha1",
-    "kubernetes/typed/settings/v1alpha1",
-    "kubernetes/typed/storage/v1",
-    "kubernetes/typed/storage/v1alpha1",
-    "kubernetes/typed/storage/v1beta1",
-    "pkg/version",
-    "rest",
-    "rest/watch",
-    "tools/cache",
-    "tools/clientcmd/api",
-    "tools/metrics",
-    "tools/pager",
-    "tools/reference",
-    "transport",
-    "util/buffer",
-    "util/cert",
-    "util/flowcontrol",
-    "util/integer"
-  ]
-  revision = "78700dec6369ba22221b72770783300f143df150"
-  version = "v6.0.0"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "4797cbcb2a3e44dbdfcb6f7a7aba5a86079a150d9cf4d782eb7f69be973c48db"
-  solver-name = "gps-cdcl"
-  solver-version = 1

Gopkg.toml

@@ -1,29 +0,0 @@
-# Pin to version before sctp was added, because latest libnetwork is
-# incompatible with latest sctp
-[[constraint]]
-  name = "github.com/docker/libnetwork"
-  revision = "119badbd"
-
-# Encourage dep not to use the docker-1.9 version
-[[constraint]]
-  name = "github.com/fsouza/go-dockerclient"
-  version = "1"
-
-# Use recent version: last tagged version is years old
-[[constraint]]
-  branch = "master"
-  name = "github.com/prometheus/client_golang"
-
-# For compatibility with fsouza/go-dockerclient
-[[constraint]]
-  branch = "master"
-  name = "github.com/docker/docker"
-
-# Most recent release tag is incompatible with docker/docker; see https://github.com/docker/distribution/issues/2503
-[[override]]
-  branch = "master"
-  name = "github.com/docker/distribution"
-
-[prune]
-  go-tests = true
-  unused-packages = true

HISTORY.md

@@ -0,0 +1,44 @@
+# History of the ReWeave project
+
+## How it started
+
+In June 2022, Weave Net had not been updated for a year. Problems were starting to appear in the field. In particular, the last published images on the Docker Hub ([weaveworks/weave-kube](https://hub.docker.com/r/weaveworks/weave-kube) and [weaveworks/weave-npc](https://hub.docker.com/r/weaveworks/weave-npc), v2.8.1) had issues supporting multiple processor architectures, and security scanners showed multiple vulnerabilities. 
+
+A call went out from Weaveworks to get the community more involved in maintaining it. After some discussion on GitHub issues and e-mail, and even a few online meetings, things were not moving forward. 
+
+## ReWeave begins
+
+Finally, in March 2023, this fork was created, with the following goals in mind:
+
+* Update dependencies, especially ones with security vulnerabilities
+* Make minimal code changes _only_ when required by updating dependencies
+* Create true multi-arch images using modern tools
+* Create a new build process to automate all this
+* Do all this with _minimal_ changes to the existing codebase. Keep all new things in the `reweave` folder.
+
+These goals were achieved. Details can be found in the [reweave](reweave/README.md) directory. A [pull request](https://github.com/weaveworks/weave/pull/3996) was submitted on the weaveworks repo, with the aim of getting a new official release out.
+
+## Weaveworks ends
+
+On February 5th, 2024, Weaveworks CEO Alexis Richardson announced via [LinkedIn](https://www.linkedin.com/posts/richardsonalexis_hi-everyone-i-am-very-sad-to-announce-activity-7160295096825860096-ZS67/) and [Twitter](https://twitter.com/monadic/status/1754530336120140116) that Weaveworks is winding down. 
+
+So, a decision was taken to maintain this fork independently.
+
+## We're forked
+
+Two major changes were introduced at this point:
+
+* The module name was changed to `github.com/rajch/weave` (previously `github.com/weaveworks/weave`)
+* The default registry account for publishing images was changed to `docker.io/rajchaudhuri` (previously `docker.io/weaveworks`)
+
+In addition, the old repo structure and codebase is not longer sacrosanct. Things can be moved around, new code can be added outside the `reweave` directory, old code can be modified or deleted as necessary.
+
+The version numbers will continue from where Weaveworks left off. 
+
+## New Goals
+
+The old goals, listed above (except the last one), remain the priority. In addition, this project aims to:
+
+* Remove dependencies on Weaveworks infrastructure, starting with telemetry (what weaveworks called checkpoint)
+* Publish new releases regularly, duly security scanned
+* Provide supporting infrastructure, such as weave's famous one-line installation, where possible

Makefile

@@ -1,434 +0,0 @@
-.DEFAULT: all
-.PHONY: all exes testrunner update tests lint publish-one-arch $(PUBLISH) clean clean-bin clean-work-dir prerequisites build run-smoketests
-
-# If you can use docker without being root, you can do "make SUDO="
-SUDO=$(shell docker info >/dev/null 2>&1 || echo "sudo -E")
-BUILD_IN_CONTAINER=true
-RM=--rm
-RUN_FLAGS=-ti
-COVERAGE=
-
-# This specifies the architecture we're building for
-ARCH?=amd64
-
-# We're using QEMU to be able to build Docker images for other architectures
-# from amd64 machines.
-QEMU_VERSION=v2.7.0
-
-# A list of all supported architectures here. Should be named as Go is naming platforms
-# All supported architectures must have an "ifeq" block below that customizes the parameters
-ALL_ARCHITECTURES=amd64 arm arm64 ppc64le
-ML_PLATFORMS=linux/amd64,linux/arm,linux/arm64,linux/ppc64le
-
-ifeq ($(ARCH),amd64)
-# The architecture to use when downloading the docker binary
-	WEAVEEXEC_DOCKER_ARCH?=x86_64
-
-# The name of the alpine baseimage to use as the base for weave images
-	ALPINE_BASEIMAGE?=alpine:3.6
-
-# The extension for the made images
-# Specifying none means for example weaveworks/weave:latest
-	ARCH_EXT?=
-
-# The name of the gcc we're using for compiling C code
-	CC=gcc
-
-# Optional parameters that can be passed when linking C code into the Go binary
-	CGO_LDFLAGS=
-endif
-ifeq ($(ARCH),arm)
-# The architecture to use when downloading the docker binary
-	WEAVEEXEC_DOCKER_ARCH?=armel
-
-# Using the (semi-)official alpine image
-	ALPINE_BASEIMAGE?=arm32v6/alpine:3.6
-
-# arm images have the -arm suffix, for instance weaveworks/weave-arm:latest
-	ARCH_EXT?=-arm
-
-# The name of the gcc binary
-	CC=arm-linux-gnueabihf-gcc
-
-# The architecture name to use when downloading a prebuilt QEMU binary
-	QEMUARCH=arm
-
-# In the weaveworks/build image; libpcap libraries for arm are placed here
-# Tell the gcc linker to search for libpcap here
-	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
-endif
-ifeq ($(ARCH),arm64)
-# Use the arm 32-bit docker client variant
-	WEAVEEXEC_DOCKER_ARCH?=armel
-
-# Using the (semi-)official alpine image
-	ALPINE_BASEIMAGE?=arm64v8/alpine:3.6
-
-# arm64 images have the -arm64 suffix, for instance weaveworks/weave-arm64:latest
-	ARCH_EXT?=-arm64
-
-# The name of the gcc binary
-	CC=aarch64-linux-gnu-gcc
-
-# The architecture name to use when downloading a prebuilt QEMU binary
-	QEMUARCH=aarch64
-
-# In the weaveworks/build image; libpcap libraries for arm64 are placed here
-# Tell the gcc linker to search for libpcap here
-	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
-endif
-ifeq ($(ARCH),ppc64le)
-# The architecture to use when downloading the docker binary
-	WEAVEEXEC_DOCKER_ARCH?=ppc64le
-
-# Using the (semi-)official alpine image
-	ALPINE_BASEIMAGE?=ppc64le/alpine:3.6
-
-# ppc64le images have the -ppc64le suffix, for instance weaveworks/weave-ppc64le:latest
-	ARCH_EXT?=-ppc64le
-
-# The name of the gcc binary
-	CC=powerpc64le-linux-gnu-gcc
-
-# The architecture name to use when downloading a prebuilt QEMU binary
-	QEMUARCH=ppc64le
-
-# In the weaveworks/build image; libpcap libraries for ppc64le are placed here
-# Tell the gcc linker to search for libpcap here
-	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
-endif
-
-# The name of the user that this Makefile should produce image artifacts for. Can/should be overridden
-DOCKERHUB_USER?=weaveworks
-# The default version that's chosen when pushing the images. Can/should be overridden
-GIT_REVISION=$(shell git rev-parse HEAD)
-WEAVE_VERSION?=git-$(shell git rev-parse --short=12 HEAD)
-# Docker Store does not allow the "latest" tag.
-NET_PLUGIN_LATEST=latest_release
-
-# Paths to all relevant binaries that should be compiled
-WEAVER_EXE=prog/weaver/weaver
-SIGPROXY_EXE=prog/sigproxy/sigproxy
-KUBEUTILS_EXE=prog/kube-utils/kube-utils
-WEAVENPC_EXE=prog/weave-npc/weave-npc
-WEAVEWAIT_EXE=prog/weavewait/weavewait
-WEAVEWAIT_NOOP_EXE=prog/weavewait/weavewait_noop
-WEAVEWAIT_NOMCAST_EXE=prog/weavewait/weavewait_nomcast
-WEAVEUTIL_EXE=prog/weaveutil/weaveutil
-RUNNER_EXE=tools/runner/runner
-# manifest-tool needs registry credentials; we assume here that the active user has logged in
-MANIFEST_TOOL_CMD=docker run --rm -v $(HOME)/.docker:/.docker weshigbee/manifest-tool --docker-cfg=/.docker
-TEST_TLS_EXE=test/tls/tls
-NETWORKTESTER_EXE=test/images/network-tester/webserver
-
-# All binaries together in a list
-EXES=$(WEAVER_EXE) $(SIGPROXY_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVEUTIL_EXE) $(RUNNER_EXE) $(TEST_TLS_EXE) $(NETWORKTESTER_EXE)
-
-# These stamp files are used to mark the current state of the build; whether an image has been built or not
-BUILD_UPTODATE=.build.uptodate
-WEAVER_UPTODATE=.weaver$(ARCH_EXT).uptodate
-WEAVEEXEC_UPTODATE=.weaveexec$(ARCH_EXT).uptodate
-PLUGIN_UPTODATE=.net-plugin$(ARCH_EXT).uptodate
-WEAVEKUBE_UPTODATE=.weavekube$(ARCH_EXT).uptodate
-WEAVENPC_UPTODATE=.weavenpc$(ARCH_EXT).uptodate
-WEAVEDB_UPTODATE=.weavedb.uptodate
-NETWORKTESTER_UPTODATE=.networktester$(ARCH_EXT).uptodate
-
-IMAGES_UPTODATE=$(WEAVER_UPTODATE) $(WEAVEEXEC_UPTODATE) $(WEAVEKUBE_UPTODATE) $(WEAVENPC_UPTODATE) $(NETWORKTESTER_UPTODATE)
-
-# The names of the images. Note that the images for other architectures than amd64 have a suffix in the image name.
-WEAVER_IMAGE=$(DOCKERHUB_USER)/weave$(ARCH_EXT)
-WEAVEEXEC_IMAGE=$(DOCKERHUB_USER)/weaveexec$(ARCH_EXT)
-WEAVEKUBE_IMAGE=$(DOCKERHUB_USER)/weave-kube$(ARCH_EXT)
-WEAVENPC_IMAGE=$(DOCKERHUB_USER)/weave-npc$(ARCH_EXT)
-BUILD_IMAGE=weaveworks/weavebuild
-WEAVEDB_IMAGE=$(DOCKERHUB_USER)/weavedb
-PLUGIN_IMAGE=$(DOCKERHUB_USER)/net-plugin
-NETWORKTESTER_IMAGE=$(DOCKERHUB_USER)/network-tester
-
-IMAGES=$(WEAVER_IMAGE) $(WEAVEEXEC_IMAGE) $(WEAVEKUBE_IMAGE) $(WEAVENPC_IMAGE) $(WEAVEDB_IMAGE) $(NETWORKTESTER_IMAGE)
-
-PLUGIN_WORK_DIR="prog/net-plugin/rootfs"
-PLUGIN_BUILD_IMG="plugin-builder"
-
-PUBLISH=publish_weave publish_weaveexec publish_weave-kube publish_weave-npc
-PUSH_ML=push_ml_weave push_ml_weaveexec push_ml_weave-kube push_ml_weave-npc
-
-WEAVE_EXPORT=weave$(ARCH_EXT).tar.gz
-
-NETGO_CHECK=@strings $@ | grep cgo_stub\\\.go >/dev/null || { \
-	rm $@; \
-	echo "\nYour go standard library was built without the 'netgo' build tag."; \
-	echo "To fix that, run"; \
-	echo "    sudo go clean -i net"; \
-	echo "    sudo go install -tags netgo std"; \
-	false; \
-}
-# The flags we are passing to go build. -extldflags -static for making a static binary, 
-# -linkmode external for linking external C libraries into the binary, -X main.version for telling the
-# Go binary which version it is, -tags netgo for enforcing the native Go DNS resolver
-BUILD_FLAGS=-i -ldflags "-linkmode external -extldflags -static -X main.version=$(WEAVE_VERSION)" -tags netgo
-
-PACKAGE_BASE=$(shell go list -e ./)
-
-all: $(WEAVE_EXPORT)
-testrunner: $(RUNNER_EXE) $(TEST_TLS_EXE)
-
-$(WEAVER_EXE) $(WEAVEUTIL_EXE): common/*.go common/*/*.go net/*.go net/*/*.go
-$(WEAVER_EXE): router/*.go ipam/*.go ipam/*/*.go db/*.go nameserver/*.go prog/weaver/*.go
-$(WEAVER_EXE): api/*.go plugin/*.go plugin/*/*
-$(WEAVER_EXE):  proxy/*.go
-$(WEAVEUTIL_EXE): prog/weaveutil/*.go net/*.go plugin/net/*.go plugin/ipam/*.go db/*.go
-$(SIGPROXY_EXE): prog/sigproxy/*.go
-$(KUBEUTILS_EXE): prog/kube-utils/*.go
-$(WEAVENPC_EXE): prog/weave-npc/*.go npc/*.go npc/*/*.go
-$(TEST_TLS_EXE): test/tls/*.go
-$(RUNNER_EXE): tools/runner/*.go
-$(WEAVEWAIT_NOOP_EXE): prog/weavewait/*.go
-$(WEAVEWAIT_EXE): prog/weavewait/*.go net/*.go
-$(WEAVEWAIT_NOMCAST_EXE): prog/weavewait/*.go net/*.go
-$(NETWORKTESTER_EXE): test/images/network-tester/*.go
-tests: tools/.git
-lint: tools/.git
-
-ifeq ($(BUILD_IN_CONTAINER),true)
-
-# This make target compiles all binaries inside of the weaveworks/build container
-# It bind-mounts the source into the container and passes all important variables
-exes $(EXES) tests lint: $(BUILD_UPTODATE)
-	@mkdir -p $(shell pwd)/.pkg
-	$(SUDO) docker run $(RM) $(RUN_FLAGS) \
-	    -v $(shell pwd):/go/src/github.com/weaveworks/weave \
-		-v $(shell pwd)/.pkg:/go/pkg \
-		-e GOARCH=$(ARCH) -e CGO_ENABLED=1 -e GOOS=linux -e CIRCLECI -e CIRCLE_BUILD_NUM -e CIRCLE_NODE_TOTAL -e CIRCLE_NODE_INDEX -e COVERDIR -e SLOW -e DEBUG \
-		$(BUILD_IMAGE) COVERAGE=$(COVERAGE) WEAVE_VERSION=$(WEAVE_VERSION) CC=$(CC) QEMUARCH=$(QEMUARCH) CGO_LDFLAGS=$(CGO_LDFLAGS) $@
-	touch $@
-
-else
-
-exes: $(EXES)
-
-$(WEAVER_EXE):
-ifeq ($(COVERAGE),true)
-	$(eval COVERAGE_MODULES := $(shell (go list ./$(@D); go list -f '{{join .Deps "\n"}}' ./$(@D) | grep "^$(PACKAGE_BASE)/") | grep -v "^$(PACKAGE_BASE)/vendor/" | paste -s -d,))
-	go test -c -o ./$@ $(BUILD_FLAGS) -v -covermode=atomic -coverpkg $(COVERAGE_MODULES) ./$(@D)/
-else
-	go build $(BUILD_FLAGS) -o $@ ./$(@D)
-endif
-	$(NETGO_CHECK)
-
-$(WEAVEUTIL_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(NETWORKTESTER_EXE):
-	go build $(BUILD_FLAGS) -o $@ ./$(@D)
-	$(NETGO_CHECK)
-
-$(WEAVEWAIT_EXE):
-	go build $(BUILD_FLAGS) -tags "netgo iface mcast" -o $@ ./$(@D)
-	$(NETGO_CHECK)
-
-$(WEAVEWAIT_NOMCAST_EXE):
-	go build $(BUILD_FLAGS) -tags "netgo iface" -o $@ ./$(@D)
-	$(NETGO_CHECK)
-
-# These programs need a separate rule as they fail the netgo check in
-# the main build stanza due to not importing net package
-$(SIGPROXY_EXE) $(TEST_TLS_EXE) $(WEAVEWAIT_NOOP_EXE) $(RUNNER_EXE):
-	go build $(BUILD_FLAGS) -o $@ ./$(@D)
-
-tests:
-	./tools/test -no-go-get -netgo -timeout 8m
-
-lint:
-	./tools/lint -nocomment -notestpackage
-
-endif
-
-# This rule makes sure the build image is up-to-date.
-# It also makes sure the multiarch hooks are reqistered in the kernel so the QEMU emulation works
-$(BUILD_UPTODATE): build/*
-	$(SUDO) docker build -t $(BUILD_IMAGE) build/
-	$(SUDO) docker run --rm --privileged multiarch/qemu-user-static:register --reset
-	touch $@
-
-# Creates the Dockerfile.your-user-here file from the template
-# Also replaces all placeholders with real values
-# If the architecture is amd64, it deletes all CROSS_BUILD lines
-# but otherwise, it only removes the "CROSS_BUILD_" placeholder and downloads QEMU
-%/Dockerfile.$(DOCKERHUB_USER): %/Dockerfile.template
-	echo "DOCKERHUB_USER|$(DOCKERHUB_USER)|g;s|ARCH_EXT|$(ARCH_EXT)|g;s|ALPINE_BASEIMAGE|$(ALPINE_BASEIMAGE)|g;s|QEMUARCH|$(QEMUARCH)"
-	sed -e "s|DOCKERHUB_USER|$(DOCKERHUB_USER)|g;s|ARCH_EXT|$(ARCH_EXT)|g;s|ALPINE_BASEIMAGE|$(ALPINE_BASEIMAGE)|g;s|QEMUARCH|$(QEMUARCH)|g" $^ > $@
-ifeq ($(ARCH),amd64)
-# When building "normally" for amd64, remove the whole line, it has no part in the amd64 image
-	sed -i.bak "/CROSS_BUILD_/d" $@
-else
-# When cross-building, only the placeholder "CROSS_BUILD_" should be removed
-# Register /usr/bin/qemu-ARCH-static as the handler for ARM and ppc64le binaries in the kernel
-	curl -sSL https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/x86_64_qemu-$(QEMUARCH)-static.tar.gz | tar -xz -C $(shell dirname $@)
-	cd $(shell dirname $@) && sha256sum -c $(shell pwd)/build/shasums/qemu-$(QEMUARCH)-static.sha256sum
-	sed -i.bak "s/CROSS_BUILD_//g" $@
-endif
-
-# The targets below builds the weave images
-$(WEAVER_UPTODATE): prog/weaver/Dockerfile.$(DOCKERHUB_USER) $(WEAVER_EXE) weave $(WEAVEUTIL_EXE)
-	cp $(WEAVEUTIL_EXE) prog/weaver/weaveutil
-	cp weave prog/weaver/weave
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaver/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVER_IMAGE) prog/weaver
-	touch $@
-
-$(WEAVEEXEC_UPTODATE): prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) prog/weaveexec/symlink $(SIGPROXY_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVER_UPTODATE)
-	cp $(SIGPROXY_EXE) prog/weaveexec/sigproxy
-	cp $(WEAVEWAIT_EXE) prog/weaveexec/weavewait
-	cp $(WEAVEWAIT_NOOP_EXE) prog/weaveexec/weavewait_noop
-	cp $(WEAVEWAIT_NOMCAST_EXE) prog/weaveexec/weavewait_nomcast
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEEXEC_IMAGE) prog/weaveexec
-	touch $@
-
-# Builds Docker plugin.
-$(PLUGIN_UPTODATE): prog/net-plugin/launch.sh prog/net-plugin/config.json $(WEAVER_UPTODATE)
-	-$(SUDO) docker rm -f $(PLUGIN_BUILD_IMG) 2>/dev/null
-	$(SUDO) docker create --name=$(PLUGIN_BUILD_IMG) $(WEAVER_IMAGE) true
-	rm -rf $(PLUGIN_WORK_DIR)
-	mkdir $(PLUGIN_WORK_DIR)
-	$(SUDO) docker export $(PLUGIN_BUILD_IMG) | tar -x -C $(PLUGIN_WORK_DIR)
-	$(SUDO) docker rm -f $(PLUGIN_BUILD_IMG)
-	cp prog/net-plugin/launch.sh $(PLUGIN_WORK_DIR)/home/weave/launch.sh
-	-$(SUDO) docker plugin disable $(PLUGIN_IMAGE):$(WEAVE_VERSION) 2>/dev/null
-	-$(SUDO) docker plugin rm $(PLUGIN_IMAGE):$(WEAVE_VERSION) 2>/dev/null
-	$(SUDO) docker plugin create $(PLUGIN_IMAGE):$(WEAVE_VERSION) prog/net-plugin
-	-$(SUDO) docker plugin disable $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) 2>/dev/null
-	-$(SUDO) docker plugin rm $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) 2>/dev/null
-	$(SUDO) docker plugin create $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) prog/net-plugin
-	touch $@
-
-$(WEAVEKUBE_UPTODATE): prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) prog/weave-kube/launch.sh $(KUBEUTILS_EXE) $(WEAVER_UPTODATE)
-	cp $(KUBEUTILS_EXE) prog/weave-kube/
-	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEKUBE_IMAGE) prog/weave-kube
-	touch $@
-
-$(WEAVENPC_UPTODATE): prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) $(WEAVENPC_EXE) prog/weave-npc/ulogd.conf
-	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVENPC_IMAGE) prog/weave-npc
-	touch $@
-
-$(WEAVEDB_UPTODATE): prog/weavedb/Dockerfile
-	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -t $(WEAVEDB_IMAGE) prog/weavedb
-	touch $@
-
-$(NETWORKTESTER_UPTODATE): test/images/network-tester/Dockerfile $(NETWORKTESTER_EXE)
-	$(SUDO) docker build -t $(NETWORKTESTER_IMAGE) test/images/network-tester
-	touch $@
-
-$(WEAVE_EXPORT): $(IMAGES_UPTODATE) $(WEAVEDB_UPTODATE)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker save $(addsuffix :latest,$(IMAGES)) | gzip > $@
-
-tools/.git:
-	git submodule update --init
-
-# CODE FOR PUBLISHING THE IMAGES
-
-# Push plugin
-plugin_publish: $(PLUGIN_UPTODATE)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker plugin push $(PLUGIN_IMAGE):$(WEAVE_VERSION)
-# "$(NET_PLUGIN_LATEST)" means "stable release" here, so only push that if explicitly told to
-ifeq ($(UPDATE_LATEST),true)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker plugin push $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST)
-endif
-
-# This target first runs "make publish" for each architecture
-# Then it pushes the manifest lists
-publish: $(addprefix sub-publish-,$(ALL_ARCHITECTURES)) $(WEAVEDB_UPTODATE)
-	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) $(PUSH_ML)
-ifeq ($(PUBLISH_WEAVEDB),true)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/weavedb:latest
-endif
-
-sub-publish-%:
-	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) clean-bin
-	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) $(IMAGES_UPTODATE)
-	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) publish-one-arch
-
-publish-one-arch: $(PUBLISH)
-
-# This rule handles the pushing of the built images
-$(PUBLISH): publish_%: $(IMAGES_UPTODATE)
-# Tag :latest with the real version
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*$(ARCH_EXT) $(DOCKERHUB_USER)/$*$(ARCH_EXT):$(WEAVE_VERSION)
-# Push the image with the arch suffix for arm, arm64 and ppc64le, and without suffix for amd64
-	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) push_$*$(ARCH_EXT)
-
-ifeq ($(ARCH),amd64)
-# If the architecture is amd64, add the -amd64 suffix.
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION) $(DOCKERHUB_USER)/$*-amd64:$(WEAVE_VERSION)
-# If the version is latest, tag the -amd64 with latest as well
-ifneq ($(UPDATE_LATEST),false)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*-amd64:$(WEAVE_VERSION) $(DOCKERHUB_USER)/$*-amd64:latest
-endif
-# Push the image with the -amd64-suffix so BINARY-ARCH-named images exist for all arches, so manifest lists may be made and ARCH is replaceable in scripts
-	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) push_$*-amd64
-endif
-
-# This target pushes an image, and if UPDATE_LATEST is anything but false, also updates the latest tag
-# It takes one parameter, the image name
-push_%:
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
-ifneq ($(UPDATE_LATEST),false)
-	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/$*:latest
-endif
-
-# This target pushes a manifest list; it takes one parameter, the image name.
-# The variable UPDATE_LATEST controls whether it updates the versioned tag and/or the latest tag
-$(PUSH_ML): push_ml_%:
-ifneq ($(UPDATE_LATEST),latest-only)
-	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:$(WEAVE_VERSION) --target $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
-endif
-ifneq ($(UPDATE_LATEST),false)
-# Push the manifest list to :latest as well
-	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:latest --target $(DOCKERHUB_USER)/$*:latest
-endif
-
-clean-work-dir:
-	rm -rf $(PLUGIN_WORK_DIR)
-
-clean-bin:
-	-$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker rmi $(IMAGES)
-	find prog -type f -name "Dockerfile.*" -not -name "Dockerfile.template" -print | xargs rm -f
-	find prog -type f -name "*qemu-*" -print | xargs rm -f
-	rm -rf $(EXES) $(IMAGES_UPTODATE) $(WEAVEDB_UPTODATE) weave*.tar.gz .pkg
-
-clean: clean-bin clean-work-dir
-	-$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker rmi $(BUILD_IMAGE)
-	rm -rf test/tls/*.pem test/coverage.* test/coverage $(BUILD_UPTODATE)
-
-build:
-	$(SUDO) go clean -i net
-	$(SUDO) go install -tags netgo std
-	$(MAKE)
-
-run-smoketests: all testrunner
-	cd test && ./setup.sh && ./run_all.sh
-
-integration-tests: all testrunner
-# Usage:
-#   $ make \
-#     NAME="<prefix used to name VMs and other resources>" \
-#     PROVIDER="<provider among {vagrant|gcp|aws|do}>" \
-#     NUM_HOSTS="<# test machines>" \
-#     PLAYBOOK="<filename>" \
-#     RUNNER_ARGS="<...>" \
-#     TESTS="<...>" \  # Can be set to only run one or a few tests instead of the full test suite.
-#     DOCKER_VERSION=<...> \
-#     KUBERNETES_VERSION=<...> \
-#     KUBERNETES_CNI_VERSION=<...> \
-#     <...> # See also run-integration-test.sh for all variables and individual functions.
-#     integration-tests
-#
-	RUNNER_ARGS="-parallel" ./test/run-integration-tests.sh
-
-# This target is only intended for use in Netlify CI environment for generating preview pages on feature branches and pull requests.
-# We need to obtain website repository (checked out under `site-build`) and place `site` directory into the context (`site-build/_weave_net_docs`).
-# We then run make in `site-build` and Netlify will publish the output (`site-build/_site`).
-netlify-site-preview:
-	@mkdir -p site-build
-	@curl --user $(WEBSITE_GITHUB_USER) --silent 'https://codeload.github.com/weaveworks/website-next/tar.gz/$(WEBSITE_BRANCH)' \
-	  | tar --extract --gunzip --directory site-build --strip 1
-	@cp -r site site-build/_weave_net_docs
-	@$(MAKE) -C site-build netlify_ensure_install
-	@$(MAKE) -C site-build BUILD_ENV=netlify

README.md

@@ -1,43 +1,36 @@
-# Weave Net - Weaving Containers into Applications
-
-[![Integration Tests](https://circleci.com/gh/weaveworks/weave/tree/master.svg?style=shield)](https://circleci.com/gh/weaveworks/weave)
-[![Coverage Status](https://coveralls.io/repos/weaveworks/weave/badge.svg)](https://coveralls.io/r/weaveworks/weave)
-[![Go Report Card](https://goreportcard.com/badge/github.com/weaveworks/weave)](https://goreportcard.com/report/github.com/weaveworks/weave)
-[![Docker Pulls](https://img.shields.io/docker/pulls/weaveworks/weave.svg?maxAge=604800)](https://hub.docker.com/r/weaveworks/weave/)
-
-# About Weaveworks
-
-[Weaveworks](https://www.weave.works) is the company that delivers the most productive way for developers to connect, observe and control
-Docker containers.
-
-This repository contains [Weave Net](https://www.weave.works/products/weave-net/), the first product developed by Weaveworks, and with over 8 million downloads to date, enables you to get started with Docker clusters and portable apps in a fraction of the time compared with other solutions.
-
-## Weave Cloud: 
-
-[Weave Cloud](https://www.weave.works/product/cloud/) is software-as-a-service that simplifies deployment, monitoring and management for containers and microservices. It extends and complements popular orchestrators, and enables developers and DevOps to realize faster deployments, insightful monitoring, visualization and networking.
-
-Weave Cloud is built using these Open Source projects: [Weave Scope](https://www.weave.works/products/weave-scope/), a powerful container visualization tool that automatically maps Docker containers and their interactions, [Weave Cortex](https://github.com/weaveworks/cortex), a horizontally-scalable version of Prometheus, and [Weave Flux](https://www.weave.works/products/weave-flux/), a continuous deployment tool that works with Kubernetes.
-
 # Weave Net
 
-Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery. With Weave Net, portable microservices-based applications consisting of multiple containers can run anywhere: on one host, multiple hosts or even across cloud providers and data centers. Applications use the network just as if the containers were all plugged into the same network switch, without having to configure port mappings, ambassadors or links.
+This repository contains a fork of Weave Net, the first product developed by Weaveworks. Since Weaveworks has shut down, this repo aims to continue maintaining Weave Net, and to publish releases regularly.
 
-Services provided by application containers on the Weave network can be exposed to the outside world, regardless of where they are running. Similarly, existing internal systems can be opened to accept connections from application containers irrespective of their location.
+[![Go Report Card](https://goreportcard.com/badge/github.com/rajch/weave)](https://goreportcard.com/report/github.com/rajch/weave)
+[![Docker Pulls](https://img.shields.io/docker/pulls/rajchaudhuri/weave-kube "Number of times the weave-kube image was pulled from the Docker Hub")](https://hub.docker.com/r/rajchaudhuri/weave-kube)
+[![GitHub release (latest by date)](https://img.shields.io/github/v/release/rajch/weave?include_prereleases)](https://github.com/rajch/weave/releases)
+[![Unique CVE count in all images](https://img.shields.io/endpoint?url=https%3A%2F%2Fraw.githubusercontent.com%2Frajch%2Fweave%2Fmaster%2Freweave%2Fscans%2Fbadge.json&label=CVE%20count "The number of unique CVEs reported by scanning all images")](reweave/scans/report.md)
 
-## <a name="help"></a>Getting help
+The history of the fork can be found in [HISTORY.md](HISTORY.md).
 
-If you have any questions about, feedback for or a problem with Weave Net:
+## Using Weave Net on Kubernetes
 
-- Read [the Weave Net docs](https://www.weave.works/docs/net/latest/overview).
-- Invite yourself to the <a href="https://weaveworks.github.io/community-slack/" target="_blank"> #weave-community </a> slack channel.
-- Ask a question on the <a href="https://weave-community.slack.com/messages/general/"> #weave-community</a> slack channel.
-- Join the <a href="https://www.meetup.com/pro/Weave/"> Weave User Group </a> and get invited to online talks, hands-on training and meetups in your area.
-- Send an email to <a href="mailto:weave-users@weave.works">weave-users@weave.works</a>
-- <a href="https://github.com/weaveworks/weave/issues/new">File an issue.</a>
+On a newly created Kubernetes cluster, the Weave Net CNI pluging can be installed by running the following command:
 
-Your feedback is always welcome!
+```
+kubectl apply -f https://reweave.azurewebsites.net/k8s/v1.29/net.yaml
+```
 
-## Further Information
+Replace `v1.29` with the version on Kubernetes on your cluster.
 
-* [Installing Weave Net](https://www.weave.works/docs/net/latest/install/installing-weave)
-* [Weave Net Product Overview](https://www.weave.works/products/weave-net)
+That endpoint is provided by the companion project [weave-endpoint](https://github.com/rajch/weave-endpoint).
+
+## Using Weave Net in other ways
+
+Please refer to the [documentation](https://rajch.github.io/weave).
+
+## Building Weave Net
+
+Details can be found [here](reweave/BUILDING.md). 
+
+## Documentation status
+
+The public documentation that used to exist in the `site` directory has been moved to the `original/site` directory. A new `website` directory has been created, and populated with the content of the `original/site` directory, rearranged and reformatted for being built with Jekyll and published to the GitHub pages site [https://rajch.github.io/weave](https://rajch.github.io/weave).
+
+The documentation will now be maintained and published from the `website` directory exclusively.

VENDORED_CODE.md

@@ -0,0 +1,17 @@
+# Use of vendored code in Weave Net
+
+Weave Net is licensed under the [Apache 2.0 license](LICENSE).
+
+Some vendored code is under different licenses though, all of them ship the
+entire license text they are under.
+
+- https://github.com/weaveworks/go-checkpoint
+  can be found in the ./vendor/ directory, is under MPL-2.0.
+
+- Pulled in by dependencies are  
+  https://github.com/hashicorp/golang-lru (MPL-2.0)  
+  https://github.com/hashicorp/go-cleanhttp (MPL-2.0)  
+  https://github.com/opencontainers/go-digest (docs are under CC by-sa 4.0)
+
+[One file used in tests](COPYING.LGPL-3) is under LGPL-3, that's why we ship
+the license text in this repository.

api/router.go

@@ -3,6 +3,7 @@ package api
 import (
 	"fmt"
 	"net"
+	"net/url"
 )
 
 // Expose calls the router to assign the given IP addr to the weave bridge.
@@ -10,3 +11,9 @@ func (client *Client) Expose(ipAddr *net.IPNet) error {
 	_, err := client.httpVerb("POST", fmt.Sprintf("/expose/%s", ipAddr), nil)
 	return err
 }
+
+// ReplacePeers replace the current set of peers
+func (client *Client) ReplacePeers(peers []string) error {
+	_, err := client.httpVerb("POST", "/connect", url.Values{"replace": {"true"}, "peer": peers})
+	return err
+}

bin/circle-dependencies-post

@@ -1,17 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-
-if [ -n "$TEST_AND_PUBLISH" ]; then
-    cd "$SRCDIR"
-    git submodule update --init
-    cd "$SRCDIR/build"
-    ../tools/rebuild-image weaveworks/weavebuild . Dockerfile build.sh
-    touch "$SRCDIR/.build.uptodate"
-    sudo chown -R ubuntu /usr/local/go
-    cd "$SRCDIR"
-    make testrunner
-    make COVERAGE=true RM= exes all
-fi

bin/circle-dependencies-post-sources

@@ -1,36 +0,0 @@
-#!/bin/bash
-
-set -e
-
-echo "TEST_AND_PUBLISH=1" >"$STATE"
-
-# Avoid doing a full build if we can.  Note if the PR doesn't exist
-# when the build is kicked off, we can't run this check so we do a
-# full build.  Subsequent pushes to the same branch will have the desired behaviour
-if [ -n "$CI_PULL_REQUEST" -a "$CI_PULL_REQUEST" = "$CI_PULL_REQUESTS" ]; then
-    if PR=$(echo "$CI_PULL_REQUEST" | grep -oP '(?<=^https://github.com/weaveworks/weave/pull/)[0-9]+$'); then
-        echo "GH_PR=$PR" >>"$STATE"
-        if FILES=$(curl -s "https://api.github.com/repos/weaveworks/weave/pulls/$PR/files" | jq -r '.[]|.filename'); then
-            echo "PR touches [$FILES]"
-            if ! echo "$FILES" | grep -v ^site/; then
-                echo "PR contains site changes only - skipping tests"
-                echo "TEST_AND_PUBLISH=" >>"$STATE"
-            else
-                echo "PR contains non-site changes - running tests"
-            fi
-        else
-            echo "Unable to get files for PR $PR" >&2
-        fi
-    else
-        echo "Unable to extract PR number from $CI_PULL_REQUEST" >&2
-    fi
-fi
-
-source "$STATE"
-
-mkdir -p "$(dirname "$SRCDIR")" && cp -r "$(pwd)/" "$SRCDIR"
-
-if [ -n "$TEST_AND_PUBLISH" ]; then
-    cd "$SRCDIR"
-    git submodule update --init
-fi

bin/circle-deploy-master

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-
-if [ -n "$TEST_AND_PUBLISH" ] ; then
-    docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
-    cd $SRCDIR
-    make clean-bin
-    # CircleCI doesn't let us install the qemu module to do ARM docker builds
-    make publish ALL_ARCHITECTURES=amd64 UPDATE_LATEST=latest-only
-fi

bin/circle-teardown-pre

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-
-if [ -n "$TEST_AND_PUBLISH" ] ; then
-    if [ "$CIRCLE_NODE_INDEX" = "0" ] ; then
-        go get github.com/mattn/goveralls
-        goveralls -repotoken $COVERALLS_REPO_TOKEN -coverprofile=$SRCDIR/test/profile.cov -service=circleci
-        cd $SRCDIR/test; cp coverage.* $CIRCLE_ARTIFACTS
-    fi
-fi

bin/circle-test-pre

@@ -1,30 +0,0 @@
-#!/bin/bash
-
-set -e
-
-# Signal failures in lock file, in order to fail fast:
-function signal_failure() {
-    echo "KO" >"$TEST_VMS_READY_LOCK_FILE"
-    exit 1
-}
-trap signal_failure ERR
-
-source "$STATE"
-source "$(dirname "$0")/wait_for.sh"
-
-if [ -n "$TEST_AND_PUBLISH" ]; then
-    [ -n "$SECRET_KEY" ] || {
-        echo "Cannot run smoke tests: no secret key"
-        exit 1
-    }
-
-    # Provisioning from image typically take 90 seconds, 
-    # but if we are creating a GCP image, it can take more than 10 minutes:
-    wait_for 900 "$TEST_VMS_PROV_AND_CONF_LOCK_FILE"
-
-    # Upload built binaries to testing VMs:
-    cd "$SRCDIR/test" # Ensures we generate Terraform state files in the right folder, for later use by integration tests.
-    ./run-integration-tests.sh setup >>"$TEST_VMS_SETUP_OUTPUT_FILE" 2>&1
-    echo "OK" >"$TEST_VMS_READY_LOCK_FILE"
-    echo "Test VMs now ready. $(date)." >>"$TEST_VMS_SETUP_OUTPUT_FILE"
-fi

bin/circle-test-smoke

@@ -1,23 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-source "$(dirname "$0")/wait_for.sh"
-
-if [ -n "$TEST_AND_PUBLISH" ]; then
-    [ -n "$SECRET_KEY" ] || {
-        echo "Cannot run smoke tests: no secret key"
-        exit 1
-    }
-
-    # Provisioning from image typically take 90 seconds, 
-    # but if we are creating a GCP image, it can take more than 10 minutes:
-    wait_for 900 "$TEST_VMS_READY_LOCK_FILE"
-
-    # Run integration tests:
-    export COVERAGE=true
-    export WEAVE_NET_SANITY_CHECKS_FILES="$CIRCLE_ARTIFACTS/weave_net_sanity_check_*.log"
-    cd "$SRCDIR/test" # Ensures we generate code coverage files in the right folder, and use the Terraform state of previously provisionned VMs.
-    ./run-integration-tests.sh test
-fi

bin/circle-test-teardown

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-
-if [ -n "$TEST_AND_PUBLISH" ] ; then
-    cd $SRCDIR/test
-    test "$CIRCLE_NODE_INDEX" != "0" || (cd $SRCDIR/test; ./gen_coverage_reports.sh)
-fi

bin/circle-test-unit

@@ -1,11 +0,0 @@
-#!/bin/bash
-
-set -e
-
-source "$STATE"
-
-if [ -n "$TEST_AND_PUBLISH" ] ; then
-    cd $SRCDIR
-    make DEBUG=1 lint
-    COVERDIR=test/coverage make RM= tests
-fi

bin/provision_test_vms.sh

@@ -1,43 +0,0 @@
-#!/bin/bash
-
-set -e
-
-# Signal failures in lock file, in order to fail fast:
-function signal_failure() {
-    echo "KO" >"$TEST_VMS_PROV_AND_CONF_LOCK_FILE"
-    exit 1
-}
-trap signal_failure ERR
-
-source "$STATE"
-
-function install_terraform() {
-    curl -fsS https://releases.hashicorp.com/terraform/0.8.5/terraform_0.8.5_linux_amd64.zip | gunzip >terraform && chmod +x terraform && sudo mv terraform /usr/bin
-}
-
-function install_ansible() {
-    sudo apt-get update || true
-    sudo apt-get install -qq -y python-pip python-dev libffi-dev libssl-dev \
-        && pip install --user -U setuptools cffi \
-        && pip install --user ansible
-    export PATH="$PATH:$HOME/.local/bin"
-}
-
-if [ -n "$TEST_AND_PUBLISH" ]; then
-    [ -n "$SECRET_KEY" ] || {
-        echo "Cannot run smoke tests: no secret key"
-        exit 1
-    }
-
-    install_terraform >>"$TEST_VMS_SETUP_OUTPUT_FILE" 2>&1
-    install_ansible >>"$TEST_VMS_SETUP_OUTPUT_FILE" 2>&1
-
-    # Only attempt to create GCP image in first container, wait for it to be created otherwise:
-    [ "$CIRCLE_NODE_INDEX" != "0" ] && export CREATE_IMAGE=0
-
-    # Provision and configure testing VMs:
-    cd "$SRCDIR/test" # Ensures we generate Terraform state files in the right folder, for later use by integration tests.
-    ./run-integration-tests.sh configure >>"$TEST_VMS_SETUP_OUTPUT_FILE" 2>&1
-    echo "OK" >"$TEST_VMS_PROV_AND_CONF_LOCK_FILE"
-    echo "Test VMs now provisioned and configured. $(date)." >>"$TEST_VMS_SETUP_OUTPUT_FILE"
-fi

build/Dockerfile

@@ -1,90 +0,0 @@
-FROM golang:1.10.1-stretch
-
-# Support Raspberry Pi 2 and newer
-ENV GOARM 7
-
-# The names of the architectures that we're fetching cross-compilers for from the Debian packages
-ENV DEB_CROSSPLATFORMS \
-	armhf \
-	arm64 \
-	ppc64el
-
-# The go platforms we are supporting to cross-compile
-ENV GO_CROSSPLATFORMS \
-	linux/arm \
-	linux/arm64 \
-	linux/ppc64le
-
-# The names of the gcc cross-compilers we have installed
-ENV GCC_CROSSCOMPILERS \
-	arm-linux-gnueabihf \
-	aarch64-linux-gnu \
-	powerpc64le-linux-gnu
-
-# Temporarily add the Debian repositories, because we're going to install gcc cross-compilers from there
-# Install the build-essential and crossbuild-essential-ARCH packages
-RUN echo "deb http://emdebian.org/tools/debian/ jessie main" > /etc/apt/sources.list.d/cgocrosscompiling.list \
-  && curl http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add - \
-  && for platform in ${DEB_CROSSPLATFORMS}; do dpkg --add-architecture $platform; done \
-  && apt-get update \
-  && apt-get install -y build-essential \
-  && for platform in ${DEB_CROSSPLATFORMS}; do apt-get install -y crossbuild-essential-${platform}; done \
-  && apt-get clean && rm -rf /var/lib/apt/lists/*
-
-# Install some required packages
-# libpcap is required because we're linking against its C libraries from the prog/weaver binary
-# flex and bison are required packages for compiling libpcap manually later
-RUN apt-get update \
-	&& apt-get install -y \
-		libpcap-dev \
-		python-requests \
-		time \
-		file \
-		flex \
-		bison
-
-RUN curl -fsSLo shfmt https://github.com/mvdan/sh/releases/download/v1.3.0/shfmt_v1.3.0_linux_amd64 && \
-	echo "b1925c2c405458811f0c227266402cf1868b4de529f114722c2e3a5af4ac7bb2  shfmt" | sha256sum -c && \
-	chmod +x shfmt && \
-	mv shfmt /usr/bin
-
-# Install common Go tools
-RUN go get \
-	github.com/golang/lint/golint \
-	github.com/fzipp/gocyclo \
-	github.com/fatih/hclfmt \
-	github.com/client9/misspell/cmd/misspell
-
-# First clean, because we're gonna rebuild the std both with -race enabled and disabled
-# Running go install std twice is intentional and required, as content is written in two different directories
-# (/usr/local/go/pkg/linux_amd64 vs /usr/local/go/pkg/linux_amd64_race)
-# The other architectures do not have support for -race
-RUN go clean -i net \
-	&& go install -tags netgo std \
-	&& go install -race -tags netgo std
-
-# Prebuild std for the other architectures
-RUN for platform in ${GO_CROSSPLATFORMS}; do \
-		GOOS=${platform%/*} GOARCH=${platform##*/} \
-			go install -tags netgo std; done
-
-# Allow full write access to the Go folders for anyone
-RUN chmod -R a+w /usr/local/go
-
-# The libpcap version from Debian packages is 1.6.2, matching that version here although newer versions of libpcap have been released
-# We have to cross-compile the libpcap library for the new architectures, that's what we're doing here
-ENV LIBPCAP_CROSS_VERSION=1.6.2
-RUN curl -sSL http://www.tcpdump.org/release/libpcap-${LIBPCAP_CROSS_VERSION}.tar.gz | tar -xz \
-	&& cd libpcap-${LIBPCAP_CROSS_VERSION} \
-	&& for crosscompiler in ${GCC_CROSSCOMPILERS}; do \
-		CC=${crosscompiler}-gcc ac_cv_linux_vers=2 ./configure --host=${crosscompiler} --with-pcap=linux \
-		&& make \
-		&& export LIB_DIR="/usr/local/lib/${crosscompiler}-gcc" VER="$(cat ./VERSION)" MAJOR_VER="$(sed 's/\([0-9][0-9]*\)\..*/\1/' ./VERSION)" \
-		&& mkdir -p ${LIB_DIR} \
-		&& cp -f libpcap.a libpcap.so.${VER} ${LIB_DIR} \
-		&& ln -sf libpcap.so.${VER} /usr/local/lib/libpcap.so.${MAJOR_VER} \
-		&& ln -sf libpcap.so.${MAJOR_VER} /usr/local/lib/libpcap.so \
-		&& make clean; done
-
-COPY build.sh /
-ENTRYPOINT ["sh", "/build.sh"]

circle.yml

@@ -1,66 +0,0 @@
-general:
-  branches:
-    ignore:
-      - gh\-pages
-
-machine:
-  pre:
-    - curl -sSL https://s3.amazonaws.com/circle-downloads/install-circleci-docker.sh | bash -s -- 1.10.0
-  services:
-    - docker
-  environment:
-    GOPATH: /home/ubuntu:$GOPATH
-    SRCDIR: /home/ubuntu/src/github.com/weaveworks/weave
-    PATH: $PATH:$HOME/.local/bin:/opt/google-cloud-sdk/bin
-    CLOUDSDK_CORE_DISABLE_PROMPTS: 1
-    STATE: /home/ubuntu/state.env
-    # Base name of VMs for integration tests:
-    NAME: test-$CIRCLE_BUILD_NUM-$CIRCLE_NODE_INDEX
-    TEST_VMS_SETUP_OUTPUT_FILE: $CIRCLE_ARTIFACTS/test_vms_setup_output.txt
-    TEST_VMS_PROV_AND_CONF_LOCK_FILE: $CIRCLE_ARTIFACTS/test_vms_provisioned_and_configured.txt
-    TEST_VMS_READY_LOCK_FILE: $CIRCLE_ARTIFACTS/test_vms_ready.txt
-    # Google Cloud Platorm images for integration tests:
-    USE_IMAGE: 1
-    DISK_NAME_PREFIX: test-$CIRCLE_BUILD_NUM-0
-
-dependencies:
-  cache_directories:
-    - "~/docker"
-  post:
-    - bin/circle-dependencies-post-sources
-    # Provision & configure testing VMs:
-    - "while [ ! -d $SRCDIR ]; do sleep 1; done; $SRCDIR/bin/provision_test_vms.sh":
-        parallel: true
-        background: true
-    - bin/circle-dependencies-post
-
-test:
-  pre:
-    - "$SRCDIR/bin/circle-test-pre":
-        parallel: true
-        background: true
-  override:
-    - "$SRCDIR/bin/circle-test-unit":
-        parallel: true
-    - "$SRCDIR/bin/circle-test-smoke":
-        parallel: true
-        timeout: 360
-  post:
-    - "$SRCDIR/bin/circle-test-teardown":
-        parallel: true
-
-teardown:
-  pre:
-    # Destroy testing VMs:
-    - "cd $SRCDIR/test && ./run-integration-tests.sh destroy":
-        parallel: true
-        background: true
-    - "$SRCDIR/bin/circle-teardown-pre":
-        parallel: true
-
-deployment:
-  master:
-    branch: master
-    owner: weaveworks
-    commands:
-      - "$SRCDIR/bin/circle-deploy-master"

common/chains/npc.go

@@ -0,0 +1,12 @@
+package chains
+
+const (
+	MainChain    = "WEAVE-NPC"
+	DefaultChain = "WEAVE-NPC-DEFAULT"
+	IngressChain = "WEAVE-NPC-INGRESS"
+
+	EgressChain        = "WEAVE-NPC-EGRESS"
+	EgressDefaultChain = "WEAVE-NPC-EGRESS-DEFAULT"
+	EgressCustomChain  = "WEAVE-NPC-EGRESS-CUSTOM"
+	EgressMarkChain    = "WEAVE-NPC-EGRESS-ACCEPT"
+)

common/docker/client.go

@@ -8,7 +8,7 @@ import (
 
 	docker "github.com/fsouza/go-dockerclient"
 
-	"github.com/weaveworks/weave/common"
+	"github.com/rajch/weave/common"
 )
 
 const (
@@ -99,7 +99,9 @@ func (c *Client) AddObserver(ob ContainerObserver) error {
 		pending := make(pendingStarts)
 		retryInterval := InitialInterval
 		for {
-			events := make(chan *docker.APIEvents)
+			// Use a buffered chan so the client library can run ahead of the listener
+			// - Docker will drop an event if it is not collected quickly enough.
+			events := make(chan *docker.APIEvents, 1024)
 			if err := c.AddEventListener(events); err != nil {
 				c.errorf("Unable to add listener to Docker API: %s - retrying in %ds", err, retryInterval/time.Second)
 			} else {

common/logging.go

@@ -54,6 +54,12 @@ func SetLogLevel(levelname string) {
 	Log.Level = level
 }
 
+func CheckError(e error) {
+	if e != nil {
+		Log.Error(e)
+	}
+}
+
 func CheckFatal(e error) {
 	if e != nil {
 		Log.Fatal(e)

docs/entrypoints.md

@@ -35,21 +35,21 @@ weave-kube is an image with the weave binaries and a wrapper script installed. I
 
 1. Setting up the weave network
 2. Connecting to peers
-3. Copy the weave CNI-compatible binary plugin `weaveutil` to `/opt/cni/bin/weave-net` and weave config in `/etc/cni/net.d/10-weave.conf`
+3. Copy the weave CNI-compatible binary plugin `weaveutil` to `/opt/cni/bin/weave-net` and weave config in `/etc/cni/net.d/10-weave.conflist`
 4. Running the weave network policy controller (weave-npc) to implement kubernetes' `NetworkPolicy`
 
 Once installation is complete, each network-relevant change in a container leads `kubelet` to:
 
 1. Set certain environment variables to configure the CNI plugin, mostly related to the container ID
 2. Launch `/opt/cni/bin/weave-net`
-3. Pass the CNI config - the contents of `/etc/cni/net.d/10-weave.conf` to `weave-net`
+3. Pass the CNI config - the contents of `/etc/cni/net.d/10-weave.conflist` to `weave-net`
 
 Thus, when each container is changed, and `kubelet` calls weave as a CNI plugin, it really just is launching `weaveutil` as `weave-net`.
 
 The installation and setup of all of the above - and therefore the entrypoint to the weave-kube image - is the script `prog/weave-kube/launch.sh`. `launch.sh` does the following:
 
 1. Read configuration variables from the environment. When the documentation for `weave-kube` describes configuring the weave network by changing the environment variables in the daemonset in the `.yml` file, `launch.sh` reads these environment variables.
-2. Set up the config file at `/etc/cni/net.d/10-weave.conf`
+2. Set up the config file at `/etc/cni/net.d/10-weave.conflist`
 3. Run the `weave` initialization script
 4. Run `weaver` with the correct configuration passed as command-line options
 
@@ -64,7 +64,7 @@ To add new options to how weave should run with each invocation, you would do th
 5. Add a command-line option `--option` to `weaveutil` or `weaver` as appropriate.
 6. If the option can be configured for CNI:
     * have `prog/weave-kube/launch.sh` read it as an environment variable and set inside
-    * set a default for the environment variable in `prog/weave-kube/weave-daemonset-k8s-1.6.yaml` and `weave-daemonset.yaml`
+    * set a default for the environment variable in `prog/weave-kube/weave-daemonset-k8s-N.N.yaml`
     * if it should be set via `weaver` globally on its one-time initialization invocation, pass it on in `launch.sh`
-    * if it needs to be set via `weaveutil` on each invocation of `weave-net`, have `launch.sh` save it as an option in the CNI config file `/etc/cni/net.d/10-weave.conf` and then have the CNI code in `plugin/net/cni.go` in `weaveutil` read it and use where appropriate
+    * if it needs to be set via `weaveutil` on each invocation of `weave-net`, have `launch.sh` save it as an option in the CNI config file `/etc/cni/net.d/10-weave.conflist` and then have the CNI code in `plugin/net/cni.go` in `weaveutil` read it and use where appropriate
 7. Document it!

docs/k8s-src-ip.md

@@ -4,7 +4,7 @@
 
 * Weave Net: v2.2.1.
 * Kubernetes: v1.10.0.
-* kube-proxy: iptables mode (default kubeadm options).
+* kube-proxy: iptables/ipvs mode with `--masquerade-all=false` and `--cluster-cidr` unspecified(default kubeadm options).
 * Hosts: `h1` and `h2`.
 
 ## Source IP
@@ -14,7 +14,7 @@
 1  | Pod_h1      | ip(Pod_h2)        | Pod_h2 | ip(Pod_h1)       | OK
 2  | h1          | ClusterIP         | Pod_h1 | ip(weave_h1)     | **NOK**
 3  | h1          | ClusterIP         | Pod_h2 | ip(weave_h1)     | OK
-4  | Pod_h1      | ClusterIP         | Pod_h1 | ip(weave_h1)     | **NOK**
+4  | Pod_h1      | ClusterIP         | Pod_h1 | ip(Pod_h1)       | OK
 5  | Pod_h1      | ClusterIP         | Pod_h2 | ip(weave_h1)     | OK
 6  | h1          | ip(h1):NodePort   | Pod_h1 | ip(weave_h1)     | **NOK**
 7  | h1          | ip(h1):NodePort   | Pod_h2 | ip(weave_h1)     | OK

docs/release-process.md

@@ -3,6 +3,7 @@
 
 * Up-to-date versions of `git`, `go` etc
 * Install GitHub release tool `go get github.com/weaveworks/github-release`
+* Install manifest tool `go get github.com/estesp/manifest-tool`
 * Create a [github token for
   github-release](https://help.github.com/articles/creating-an-access-token-for-command-line-use/); select the `repo` OAuth scope; set and export `$GITHUB_TOKEN` with this value
 
@@ -135,7 +136,7 @@ Now, you can validate whether images were published for all platforms:
     # Published platforms per image:
     for img in $(grep '^PUBLISH=' Makefile); do
         img="weaveworks/$(echo $img | cut -d_ -f2):${TAG#v}"
-        platforms=$(vendor/github.com/estesp/manifest-tool/manifest-tool \
+        platforms=$(manifest-tool \
                 inspect --raw "$img" | \
                 jq '.[].Platform | .os + "/" +.architecture' | \
                 tr '\n' ' ')
@@ -154,6 +155,7 @@ Weave Net is [available in Docker Store](https://store.docker.com/plugins/weave-
 * Go to "_Plans & Pricing_" > "_Free Tier_".
 * Under "_Source Repositories & Tags_", click on "_Add Source_", select "_net-plugin_" under "_Repository_" and the version to release under "_Tag_".
 * Under "_Resources_" > "_Installation Instructions_", update the lines containing `export NET_VERSION=<version>`.
+* Click "_Save_"
 * Click "_Submit For Review_". You should see a message like: "_Your product has been submitted for approval. [...] We'll be in touch with next steps soon!_".
 * You should receive an email saying:
 
@@ -177,6 +179,8 @@ Weave Net is [available in Docker Store](https://store.docker.com/plugins/weave-
   https://checkpoint-api.weave.works/admin
 * File a PR to update the version of the daemonset at
   https://github.com/kubernetes/kops/tree/master/upup/models/cloudup/resources/addons/networking.weave
+  and kops/upup/pkg/fi/cloudup/bootstrapchannelbuilder.go
+  and kops/upup/pkg/fi/cloudup/tests/bootstrapchannelbuilder/weave/manifest.yaml
 
 ## Troubleshooting
 

docs/weavenpc-design.md

@@ -9,7 +9,9 @@ destroyed automatically in response to Pod, Namespace and
 NetworkPolicy object updates from the k8s API server:
 
 * A `hash:ip` set per namespace, containing the IP addresses of all
-  pods in that namespace
+  pods in that namespace for which default ingress is allowed
+* A `hash:ip` set per namespace, containing the IP addresses of all
+  pods in that namespace for which default egress is allowed  
 * A `list:set` per distinct (across all network policies in all
   namespaces) namespace selector mentioned in a network policy,
   containing the names of any of the above hash:ip sets whose
@@ -18,6 +20,9 @@ NetworkPolicy object updates from the k8s API server:
   containing network policy's namespace) pod selector mentioned in a
   network policy, containing the IP addresses of all pods in the
   namespace whose labels match that selector
+* A `hash:net` set for each distinct (within the scope of the
+  containing network policy's namespace) `except` list of CIDR's mentioned in
+  the network policies
 
 IPsets are implemented by the kernel module `xt_set`, without which
 weave-npc will not work.
@@ -38,11 +43,21 @@ hashing to avoid clashes.
 
 # iptables chains
 
-The policy controller maintains two iptables chains in response to
-changes to pods, namespaces and network policies. One chain contains
-the ingress rules that implement the network policy specifications,
-and the other is used to bypass the ingress rules for namespaces which
-have an ingress isolation policy of `DefaultAllow`.
+The policy controller maintains several iptables chains in response to
+changes to pods, namespaces and network policies. 
+
+## Static `WEAVE-NPC` chain
+
+`WEAVE-NPC` chain contains static rules to ACCEPT traffic that is `RELATED,ESTABLISHED`
+and run `NEW` traffic through `WEAVE-NPC-DEFAULT` followed by `WEAVE-NPC-INGRESS` chains 
+
+Static configuration:
+
+```
+iptables -A WEAVE-NPC -m state --state RELATED,ESTABLISHED -j ACCEPT
+iptables -A WEAVE-NPC -m state --state NEW -j WEAVE-NPC-DEFAULT
+iptables -A WEAVE-NPC -m state --state NEW -j WEAVE-NPC-INGRESS
+```
 
 ## Dynamically maintained `WEAVE-NPC-DEFAULT` chain
 
@@ -63,23 +78,58 @@ For each namespace network policy ingress rule peer/port combination:
 iptables -A WEAVE-NPC-INGRESS -p $PROTO [-m set --match-set $SRCSET] -m set --match-set $DSTSET --dport $DPORT -j ACCEPT
 ```
 
-## Static `WEAVE-NPC` chain
+## Static `WEAVE-NPC-EGRESS` chain
+
+`WEAVE-NPC-EGRESS` chain contains static rules to ACCEPT traffic that is `RELATED,ESTABLISHED`
+and run `NEW` traffic through `WEAVE-NPC-EGRESS-DEFAULT` followed by `WEAVE-NPC-EGRESS-CUSTOM` chains 
 
 Static configuration:
 
 ```
-iptables -A WEAVE-NPC -m state --state RELATED,ESTABLISHED -j ACCEPT
-iptables -A WEAVE-NPC -m state --state NEW -j WEAVE-NPC-DEFAULT
-iptables -A WEAVE-NPC -m state --state NEW -j WEAVE-NPC-INGRESS
+iptables -A WEAVE-NPC-EGRESS -m state --state RELATED,ESTABLISHED -j ACCEPT
+iptables -A WEAVE-NPC-EGRESS -m state --state NEW -j WEAVE-NPC-EGRESS-DEFAULT
+iptables -A WEAVE-NPC-EGRESS -m state --state NEW -m mark ! --mark 0x40000/0x40000 -j WEAVE-NPC-EGRESS-CUSTOM
+iptables -A WEAVE-NPC-EGRESS -m mark ! --mark 0x40000/0x40000 -j DROP
 ```
 
+## Dynamically maintained `WEAVE-NPC-EGRESS-DEFAULT` chain
+
+The policy controller maintains a rule in this chain for every
+namespace whose egress isolation policy is `DefaultAllow`. The
+purpose of this rule is simply to ACCEPT any traffic originating from such namespace before it reaches the egress chain.
+
+```
+iptables -A WEAVE-NPC-EGRESS-DEFAULT -m set --match-set $NSIPSET src -j WEAVE-NPC-EGRESS-ACCEPT
+iptables -A WEAVE-NPC-EGRESS-DEFAULT -m set --match-set $NSIPSET src -j RETURN
+```
+
+## Static `WEAVE-NPC-EGRESS-ACCEPT` chain
+
+`WEAVE-NPC-EGRESS-ACCEPTS` chain contains static rules to mark traffic
+
+Static configuration:
+
+```
+iptables -A WEAVE-NPC-EGRESS-ACCEPT -j MARK --set-xmark 0x40000/0x40000
+```
+
+## Dynamically maintained `WEAVE-NPC-EGRESS-CUSTOM` chain
+
+For each namespace network policy egress rule peer/port combination:
+
+```
+iptables -A WEAVE-NPC-EGRESS-CUSTOM -p $PROTO [-m set --match-set $SRCSET] -m set --match-set $DSTSET --dport $DPORT -j ACCEPT
+```
+
+
 # Steering traffic into the policy engine
 
 To direct traffic into the policy engine:
 
 ```
-iptables -A FORWARD -o weave -m physdev ! --physdev-out vethwe-bridge -j WEAVE-NPC
-iptables -A FORWARD -o weave -m physdev ! --physdev-out vethwe-bridge -j DROP
+iptables -A INPUT -i weave -j WEAVE-NPC-EGRESS
+iptables -A FORWARD -i weave -j WEAVE-NPC-EGRESS
+iptables -A FORWARD -o weave -j WEAVE-NPC
 ```
 
 Note this only affects traffic which egresses the bridge on a physical

go.mod

@@ -0,0 +1,119 @@
+module github.com/rajch/weave
+
+go 1.23.1
+
+require (
+	github.com/andybalholm/go-bit v1.0.1
+	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
+	github.com/aws/aws-sdk-go v1.34.0
+	github.com/boltdb/bolt v1.3.1
+	github.com/containernetworking/cni v1.1.2
+	github.com/containernetworking/plugins v1.2.0
+	github.com/coreos/go-iptables v0.6.0
+	github.com/docker/docker v25.0.6+incompatible
+	github.com/docker/libnetwork v0.8.0-dev.2.0.20180212220201-119badbd737b
+	github.com/docker/machine v0.14.0
+	github.com/fsouza/go-dockerclient v1.10.0
+	github.com/google/gopacket v1.1.16
+	github.com/gorilla/mux v1.8.0
+	github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b
+	github.com/miekg/dns v1.1.52
+	github.com/pkg/errors v0.9.1
+	github.com/pkg/profile v1.2.1
+	github.com/prometheus/client_golang v1.14.0
+	github.com/sirupsen/logrus v1.9.3
+	github.com/stretchr/testify v1.8.4
+	github.com/vishvananda/netlink v1.2.1-beta.2
+	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f
+	github.com/weaveworks/common v0.0.0-20180321110636-ebab3a78900a
+	github.com/weaveworks/go-checkpoint v0.0.0-20170503165305-ebbb8b0518ab
+	github.com/weaveworks/go-odp v0.0.0-20181017121109-6b0aa22550d9
+	github.com/weaveworks/mesh v0.0.0-20191105120815-58dbcc3e8e63
+	golang.org/x/crypto v0.31.0
+	golang.org/x/sys v0.28.0
+	golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d
+	k8s.io/api v0.26.2
+	k8s.io/apimachinery v0.26.2
+	k8s.io/client-go v0.26.2
+)
+
+require github.com/spf13/cobra v1.6.1
+
+require github.com/mattn/go-isatty v0.0.18 // indirect
+
+require (
+	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
+	github.com/Microsoft/go-winio v0.6.1 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/containerd/containerd v1.7.11 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/emicklei/go-restful/v3 v3.10.1 // indirect
+	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
+	github.com/felixge/httpsnoop v1.0.3 // indirect
+	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-openapi/jsonpointer v0.19.5 // indirect
+	github.com/go-openapi/jsonreference v0.20.0 // indirect
+	github.com/go-openapi/swag v0.19.14 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/gnostic v0.5.7-v3refs // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/hashicorp/go-cleanhttp v0.0.0-20171218145408-d5fe4b57a186 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
+	github.com/jmespath/go-jmespath v0.3.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.16.0 // indirect
+	github.com/mailru/easyjson v0.7.6 // indirect
+	github.com/mattn/go-colorable v0.0.9 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/mdlayher/raw v0.0.0-20181016155347-fa5ef3332ca9 // indirect
+	github.com/moby/patternmatcher v0.6.0 // indirect
+	github.com/moby/sys/sequential v0.5.0 // indirect
+	github.com/moby/sys/user v0.3.0 // indirect
+	github.com/moby/term v0.0.0-20221205130635-1aeaba878587 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.0-rc2.0.20221005185240-3a7f492d3f1b // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/safchain/ethtool v0.2.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.45.0 // indirect
+	go.opentelemetry.io/otel v1.19.0 // indirect
+	go.opentelemetry.io/otel/metric v1.19.0 // indirect
+	go.opentelemetry.io/otel/trace v1.19.0 // indirect
+	golang.org/x/mod v0.17.0 // indirect
+	golang.org/x/net v0.33.0 // indirect
+	golang.org/x/oauth2 v0.10.0 // indirect
+	golang.org/x/sync v0.10.0 // indirect
+	golang.org/x/term v0.27.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
+	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	gotest.tools/v3 v3.4.0 // indirect
+	k8s.io/klog/v2 v2.90.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 // indirect
+	k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5 // indirect
+	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)

go.sum

@@ -0,0 +1,772 @@
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+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+k8s.io/api v0.26.2 h1:dM3cinp3PGB6asOySalOZxEG4CZ0IAdJsrYZXE/ovGQ=
+k8s.io/api v0.26.2/go.mod h1:1kjMQsFE+QHPfskEcVNgL3+Hp88B80uj0QtSOlj8itU=
+k8s.io/apimachinery v0.26.2 h1:da1u3D5wfR5u2RpLhE/ZtZS2P7QvDgLZTi9wrNZl/tQ=
+k8s.io/apimachinery v0.26.2/go.mod h1:ats7nN1LExKHvJ9TmwootT00Yz05MuYqPXEXaVeOy5I=
+k8s.io/client-go v0.26.2 h1:s1WkVujHX3kTp4Zn4yGNFK+dlDXy1bAAkIl+cFAiuYI=
+k8s.io/client-go v0.26.2/go.mod h1:u5EjOuSyBa09yqqyY7m3abZeovO/7D/WehVVlZ2qcqU=
+k8s.io/klog/v2 v2.90.1 h1:m4bYOKall2MmOiRaR1J+We67Do7vm9KiQVlT96lnHUw=
+k8s.io/klog/v2 v2.90.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
+k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 h1:+70TFaan3hfJzs+7VK2o+OGxg8HsuBr/5f6tVAjDu6E=
+k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280/go.mod h1:+Axhij7bCpeqhklhUTe3xmOn6bWxolyZEeyaFpjGtl4=
+k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5 h1:kmDqav+P+/5e1i9tFfHq1qcF3sOrDp+YEkVDAHu7Jwk=
+k8s.io/utils v0.0.0-20230220204549-a5ecb0141aa5/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 h1:iXTIw73aPyC+oRdyqqvVJuloN1p0AC/kzH07hu3NE+k=
+sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
+sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE=
+sigs.k8s.io/structured-merge-diff/v4 v4.2.3/go.mod h1:qjx8mGObPmV2aSZepjQjbmb2ihdVs8cGKBraizNC69E=
+sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
+sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=

ipam/allocate.go

@@ -3,8 +3,8 @@ package ipam
 import (
 	"fmt"
 
-	"github.com/weaveworks/weave/api"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/api"
+	"github.com/rajch/weave/net/address"
 )
 
 type allocateResult struct {

ipam/allocator.go

@@ -9,13 +9,13 @@ import (
 
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/db"
-	"github.com/weaveworks/weave/ipam/paxos"
-	"github.com/weaveworks/weave/ipam/ring"
-	"github.com/weaveworks/weave/ipam/space"
-	"github.com/weaveworks/weave/ipam/tracker"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/db"
+	"github.com/rajch/weave/ipam/paxos"
+	"github.com/rajch/weave/ipam/ring"
+	"github.com/rajch/weave/ipam/space"
+	"github.com/rajch/weave/ipam/tracker"
+	"github.com/rajch/weave/net/address"
 )
 
 // Kinds of message we can unicast to other peers
@@ -207,21 +207,6 @@ func (alloc *Allocator) doOperation(op operation, ops *[]operation) {
 	}
 }
 
-// Given an operation, remove it from the pending queue
-//  Note the op may not be on the queue; it may have
-//  already succeeded.  If it is on the queue, we call
-//  cancel on it, allowing callers waiting for the resultChans
-//  to unblock.
-func (alloc *Allocator) cancelOp(opToCancel operation, ops *[]operation) {
-	for i, op := range *ops {
-		if op == opToCancel {
-			*ops = append((*ops)[:i], (*ops)[i+1:]...)
-			op.Cancel()
-			break
-		}
-	}
-}
-
 // Cancel all operations in a queue
 func (alloc *Allocator) cancelOps(ops *[]operation) {
 	for _, op := range *ops {
@@ -275,7 +260,7 @@ func (alloc *Allocator) spaceRequestDenied(sender mesh.PeerName, r address.Range
 	for i := 0; i < len(alloc.pendingClaims); {
 		claim := alloc.pendingClaims[i].(*claim)
 		if r.Contains(claim.cidr.Addr) {
-			claim.deniedBy(alloc, sender)
+			claim.deniedBy(alloc, sender, nil)
 			alloc.pendingClaims = append(alloc.pendingClaims[:i], alloc.pendingClaims[i+1:]...)
 			continue
 		}
@@ -556,7 +541,8 @@ func (alloc *Allocator) annotatePeernames(names []mesh.PeerName) []string {
 // in the ring. Async.
 //
 // NB: the function is invoked by the gossip library routines and should be
-//     registered manually.
+//
+//	registered manually.
 func (alloc *Allocator) PeerGone(peerName mesh.PeerName) {
 	alloc.debugf("PeerGone: peer %s", peerName)
 
@@ -814,6 +800,16 @@ func (alloc *Allocator) sendRingUpdate(dest mesh.PeerName) {
 	alloc.gossip.GossipUnicast(dest, msg)
 }
 
+func (alloc *Allocator) hasAllocations(rs []address.Range) bool {
+	for _, r := range rs {
+		alloc.debugf("hasAllocations: %v %v vs %v", r, alloc.space.NumFreeAddressesInRange(r), r.Size())
+		if alloc.space.NumFreeAddressesInRange(r) != r.Size() {
+			return true
+		}
+	}
+	return false
+}
+
 func (alloc *Allocator) update(sender mesh.PeerName, msg []byte) error {
 	reader := bytes.NewReader(msg)
 	decoder := gob.NewDecoder(reader)
@@ -832,7 +828,7 @@ func (alloc *Allocator) update(sender mesh.PeerName, msg []byte) error {
 	// If someone sent us a ring, merge it into ours. Note this will move us
 	// out of the awaiting-consensus state if we didn't have a ring already.
 	case data.Ring != nil:
-		updated, err := alloc.ring.Merge(*data.Ring)
+		updated, err := alloc.ring.Merge(*data.Ring, alloc.hasAllocations)
 		switch err {
 		case nil:
 			if updated {
@@ -910,6 +906,7 @@ func (alloc *Allocator) donateSpace(r address.Range, to mesh.PeerName) {
 	alloc.debugln("Giving range", chunk, "to", to)
 	alloc.ring.GrantRangeToHost(chunk.Start, chunk.End, to)
 	alloc.persistRing()
+	alloc.gossip.GossipBroadcast(alloc.Gossip())
 }
 
 func (alloc *Allocator) assertInvariants() {
@@ -985,7 +982,7 @@ func (alloc *Allocator) loadPersistedData() bool {
 		alloc.persistOwned()
 	}
 
-	if !nameFound || !ringFound {
+	if !nameFound || !ringFound || persistedRing == nil || persistedRing.Empty() {
 		overwritePersisted("No valid persisted data")
 		return false
 	}

ipam/allocator_test.go

@@ -9,16 +9,14 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/weaveworks/weave/api"
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
-	"github.com/weaveworks/weave/testing/gossip"
+	"github.com/rajch/weave/api"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
+	"github.com/rajch/weave/testing/gossip"
 )
 
 const (
 	testStart1 = "10.0.1.0"
-	testStart2 = "10.0.2.0"
-	testStart3 = "10.0.3.0"
 )
 
 func returnFalse() bool { return false }

ipam/claim.go

@@ -5,13 +5,14 @@ import (
 
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/api"
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/api"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 type claim struct {
 	resultChan       chan<- error
+	tryCount         int
 	ident            string       // a container ID, something like "weave:expose", or api.NoContainerID
 	cidr             address.CIDR // single address being claimed
 	isContainer      bool         // true if ident is a container ID
@@ -19,6 +20,8 @@ type claim struct {
 	hasBeenCancelled func() bool
 }
 
+const maxTryCount = 5
+
 // Send an error (or nil for success) back to caller listening on resultChan
 func (c *claim) sendResult(result error) {
 	// Make sure we only send a result once, since listener stops listening after that
@@ -40,6 +43,8 @@ func (c *claim) Try(alloc *Allocator) bool {
 		return true
 	}
 
+	c.tryCount++
+
 	addOwned := func() {
 		if c.ident == api.NoContainerID {
 			alloc.addOwned(c.cidr.Addr.String(), c.cidr, c.isContainer)
@@ -90,8 +95,10 @@ func (c *claim) Try(alloc *Allocator) bool {
 			if c.noErrorOnUnknown {
 				alloc.infof("Claim %s for %s: %s; will try later.", c.cidr, c.ident, err)
 				c.sendResult(nil)
-			} else { // just tell the user they can't do this.
-				c.deniedBy(alloc, owner)
+			} else if c.tryCount > maxTryCount {
+				// give up, tell the user they can't do this
+				c.deniedBy(alloc, owner, err)
+				return true
 			}
 		}
 		return false
@@ -128,12 +135,16 @@ func (c *claim) Try(alloc *Allocator) bool {
 	return true
 }
 
-func (c *claim) deniedBy(alloc *Allocator, owner mesh.PeerName) {
+func (c *claim) deniedBy(alloc *Allocator, owner mesh.PeerName, err error) {
 	name, found := alloc.nicknames[owner]
 	if found {
 		name = " (" + name + ")"
 	}
-	c.sendResult(fmt.Errorf("address %s is owned by other peer %s%s", c.cidr.String(), owner, name))
+	reason := ""
+	if err != nil {
+		reason = fmt.Sprintf(" - %s", err)
+	}
+	c.sendResult(fmt.Errorf("address %s is owned by other peer %s%s%s", c.cidr.String(), owner, name, reason))
 }
 
 func (c *claim) Cancel() {

ipam/http.go

@@ -1,15 +1,16 @@
 package ipam
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"net/http"
 
 	"github.com/gorilla/mux"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/common/docker"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/common/docker"
+	"github.com/rajch/weave/net/address"
 )
 
 func badRequest(w http.ResponseWriter, err error) {
@@ -41,7 +42,7 @@ func writeAddresses(w http.ResponseWriter, cidrs []address.CIDR) {
 	}
 }
 
-func hasBeenCancelled(dockerCli *docker.Client, closedChan <-chan bool, ident string, checkAlive bool) func() bool {
+func hasBeenCancelled(dockerCli *docker.Client, closedChan <-chan struct{}, ident string, checkAlive bool) func() bool {
 	return func() bool {
 		select {
 		case <-closedChan:
@@ -63,9 +64,9 @@ func cancellationErr(w http.ResponseWriter, err error) bool {
 	return false
 }
 
-func (alloc *Allocator) handleHTTPAllocate(dockerCli *docker.Client, w http.ResponseWriter, ident string, checkAlive bool, subnet address.CIDR) {
+func (alloc *Allocator) handleHTTPAllocate(ctx context.Context, dockerCli *docker.Client, w http.ResponseWriter, ident string, checkAlive bool, subnet address.CIDR) {
 	addr, err := alloc.Allocate(ident, subnet, checkAlive,
-		hasBeenCancelled(dockerCli, w.(http.CloseNotifier).CloseNotify(), ident, checkAlive))
+		hasBeenCancelled(dockerCli, ctx.Done(), ident, checkAlive))
 	if err != nil {
 		if !cancellationErr(w, err) {
 			badRequest(w, err)
@@ -75,9 +76,9 @@ func (alloc *Allocator) handleHTTPAllocate(dockerCli *docker.Client, w http.Resp
 	fmt.Fprintf(w, "%s/%d", addr, subnet.PrefixLen)
 }
 
-func (alloc *Allocator) handleHTTPClaim(dockerCli *docker.Client, w http.ResponseWriter, ident string, cidr address.CIDR, checkAlive, noErrorOnUnknown bool) {
+func (alloc *Allocator) handleHTTPClaim(ctx context.Context, dockerCli *docker.Client, w http.ResponseWriter, ident string, cidr address.CIDR, checkAlive, noErrorOnUnknown bool) {
 	err := alloc.Claim(ident, cidr, checkAlive, noErrorOnUnknown,
-		hasBeenCancelled(dockerCli, w.(http.CloseNotifier).CloseNotify(), ident, checkAlive))
+		hasBeenCancelled(dockerCli, ctx.Done(), ident, checkAlive))
 	if err != nil {
 		if !cancellationErr(w, err) {
 			badRequest(w, fmt.Errorf("Unable to claim: %s", err))
@@ -99,7 +100,7 @@ func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CID
 			ident := vars["id"]
 			checkAlive := r.FormValue("check-alive") == "true"
 			noErrorOnUnknown := r.FormValue("noErrorOnUnknown") == "true"
-			alloc.handleHTTPClaim(dockerCli, w, ident, cidr, checkAlive, noErrorOnUnknown)
+			alloc.handleHTTPClaim(r.Context(), dockerCli, w, ident, cidr, checkAlive, noErrorOnUnknown)
 		}
 	})
 
@@ -164,13 +165,13 @@ func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CID
 	router.Methods("POST").Path("/ip/{id}/{ip}/{prefixlen}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		vars := mux.Vars(r)
 		if subnet, ok := parseCIDR(w, vars["ip"]+"/"+vars["prefixlen"], true); ok {
-			alloc.handleHTTPAllocate(dockerCli, w, vars["id"], r.FormValue("check-alive") == "true", subnet)
+			alloc.handleHTTPAllocate(r.Context(), dockerCli, w, vars["id"], r.FormValue("check-alive") == "true", subnet)
 		}
 	})
 
 	router.Methods("POST").Path("/ip/{id}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		vars := mux.Vars(r)
-		alloc.handleHTTPAllocate(dockerCli, w, vars["id"], r.FormValue("check-alive") == "true", defaultSubnet)
+		alloc.handleHTTPAllocate(r.Context(), dockerCli, w, vars["id"], r.FormValue("check-alive") == "true", defaultSubnet)
 	})
 
 	router.Methods("DELETE").Path("/ip/{id}/{ip}").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -199,6 +200,10 @@ func (alloc *Allocator) HandleHTTP(router *mux.Router, defaultSubnet address.CID
 	})
 
 	router.Methods("GET").Path("/ipinfo/tracker").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, alloc.tracker.String())
+		tracker := ""
+		if alloc.tracker != nil {
+			tracker = alloc.tracker.String()
+		}
+		fmt.Fprintln(w, tracker)
 	})
 }

ipam/http_test.go

@@ -1,6 +1,7 @@
 package ipam
 
 import (
+	"context"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -11,9 +12,9 @@ import (
 	"time"
 
 	"github.com/gorilla/mux"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 	"github.com/stretchr/testify/require"
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
 )
 
 func HTTPPost(t *testing.T, url string) string {
@@ -158,11 +159,13 @@ func TestHTTPCancel(t *testing.T) {
 
 	// Ask the http server for a new address
 	req, _ := http.NewRequest("POST", allocURL(port, testCIDR1, containerID), nil)
+	ctx, cancel := context.WithCancel(context.Background())
+	req = req.WithContext(ctx)
 	// On another goroutine, wait for a bit then cancel the request
 	go func() {
 		time.Sleep(100 * time.Millisecond)
 		common.Log.Debug("Cancelling allocate")
-		http.DefaultTransport.(*http.Transport).CancelRequest(req)
+		cancel()
 	}()
 
 	res, _ := http.DefaultClient.Do(req)

ipam/paxos/paxos_test.go

@@ -56,16 +56,6 @@ func (m *Model) addLink(a, b *TestNode) {
 	m.readyLinks = append(m.readyLinks, &ab, &ba)
 }
 
-func (m *Model) linkExists(a, b *TestNode) bool {
-	for _, l := range a.links {
-		if l.to == b {
-			return true
-		}
-	}
-
-	return false
-}
-
 type TestParams struct {
 	// Number of nodes
 	nodeCount uint

ipam/ring/entry.go

@@ -1,12 +1,13 @@
 package ring
 
 import (
+	"fmt"
 	"sort"
 
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 // Entry represents entries around the ring
@@ -25,6 +26,7 @@ func (e *entry) Equal(e2 *entry) bool {
 func (e *entry) update(peername mesh.PeerName, free address.Count) {
 	e.Peer = peername
 	e.Version++
+	common.Log.Debugln(fmt.Sprintf("Updating ring token=%s current peer=%s updated peer=%s new version=%s", e.Token, e.Peer, peername, fmt.Sprint(e.Version)))
 	e.Free = free
 }
 
@@ -72,8 +74,9 @@ func (es entries) get(token address.Address) (*entry, bool) {
 // Is token between entries at i and j?
 // NB i and j can overflow and will wrap
 // NBB this function does not work very well if there is only one
-//     token on the ring; luckily an accurate answer is not needed
-//     by the call sites in this case.
+//
+//	token on the ring; luckily an accurate answer is not needed
+//	by the call sites in this case.
 func (es entries) between(token address.Address, i, j int) bool {
 	common.Assert(i < j)
 

ipam/ring/ring.go

@@ -14,8 +14,8 @@ import (
 
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 type OnUpdate func(prev, curr []address.Range, local bool)
@@ -213,7 +213,7 @@ func (r *Ring) GrantRangeToHost(start, end address.Address, peer mesh.PeerName)
 
 // Merge the given ring into this ring and indicate whether this ring
 // got updated as a result.
-func (r *Ring) Merge(gossip Ring) (bool, error) {
+func (r *Ring) Merge(gossip Ring, hasAllocations func(r []address.Range) bool) (bool, error) {
 	r.assertInvariants()
 	defer r.trackUpdates()()
 
@@ -238,12 +238,22 @@ func (r *Ring) Merge(gossip Ring) (bool, error) {
 		return false, ErrDifferentRange
 	}
 
-	result, updated, err := r.Entries.merge(gossip.Entries, r.Peer)
+	result, updated, err := r.Entries.merge(gossip.Entries, r.Peer, r, hasAllocations)
 
 	if err != nil {
 		return false, err
 	}
 
+	// reset the free space for entries if there is invalid free space
+	// due to accepting an unexpected update from the peers
+	for i := 0; i < len(result); i++ {
+		distance := r.distance(result.entry(i).Token, result.entry(i+1).Token)
+		if result.entry(i).Peer == r.Peer && result.entry(i).Free > distance {
+			// case that can arise when a range that we own that got split and had no allocations
+			result.entry(i).Free = distance
+		}
+	}
+
 	if err := r.checkEntries(result); err != nil {
 		return false, fmt.Errorf("Merge of incoming data causes: %s", err)
 	}
@@ -260,7 +270,7 @@ func (r *Ring) Merge(gossip Ring) (bool, error) {
 // entries belonging to ourPeer. Returns the merged entries and an
 // indication whether the merge resulted in any changes, i.e. the
 // result differs from the original.
-func (es entries) merge(other entries, ourPeer mesh.PeerName) (result entries, updated bool, err error) {
+func (es entries) merge(other entries, ourPeer mesh.PeerName, r *Ring, hasAllocations func(r []address.Range) bool) (result entries, updated bool, err error) {
 	var mine, theirs *entry
 	var previousOwner *mesh.PeerName
 	addToResult := func(e entry) { result = append(result, &e) }
@@ -274,6 +284,7 @@ func (es entries) merge(other entries, ourPeer mesh.PeerName) (result entries, u
 	var i, j int
 	for i < len(es) && j < len(other) {
 		mine, theirs = es[i], other[j]
+		common.Log.Debugf("[ring %s]: Merge mine.Token=%s theirs.Token=%s mine.Peer=%s theirs.Peer=%s mine.Version=%v theirs.Version=%v", ourPeer, mine.Token, theirs.Token, mine.Peer, theirs.Peer, mine.Version, theirs.Version)
 		switch {
 		case mine.Token < theirs.Token:
 			addToResult(*mine)
@@ -282,8 +293,11 @@ func (es entries) merge(other entries, ourPeer mesh.PeerName) (result entries, u
 		case mine.Token > theirs.Token:
 			// insert, checking that a range owned by us hasn't been split
 			if previousOwner != nil && *previousOwner == ourPeer && theirs.Peer != ourPeer {
-				err = errEntryInMyRange(theirs)
-				return
+				// check we have no allocations in the range that got split
+				if hasAllocations(r.makeRanges(theirs.Token, mine.Token)) {
+					err = errEntryInMyRange(theirs)
+					return
+				}
 			}
 			addTheirs(*theirs)
 			j++
@@ -292,17 +306,44 @@ func (es entries) merge(other entries, ourPeer mesh.PeerName) (result entries, u
 			switch {
 			case mine.Version >= theirs.Version:
 				if mine.Version == theirs.Version && !mine.Equal(theirs) {
-					err = errInconsistentEntry(mine, theirs)
-					return
+					if mine.Peer == ourPeer {
+						// if we own the entry and has allocations
+						if hasAllocations(r.makeRanges(theirs.Token, es.entry(i+1).Token)) {
+							err = errInconsistentEntry(mine, theirs)
+							return
+						}
+					}
+					// tie-break here, pick the entry with the highest free count
+					if mine.Free >= theirs.Free {
+						addToResult(*mine)
+						previousOwner = &mine.Peer
+					} else {
+						addTheirs(*theirs)
+					}
+				} else {
+					addToResult(*mine)
+					previousOwner = &mine.Peer
 				}
-				addToResult(*mine)
-				previousOwner = &mine.Peer
 			case mine.Version < theirs.Version:
-				if mine.Peer == ourPeer { // We shouldn't receive updates to our own tokens
-					err = errNewerVersion(mine, theirs)
-					return
+				if mine.Peer == ourPeer {
+					// We received update to our own tokens accept the received entry
+					// if either it belongs to a different peer and we do not have allocations
+					// in the range effectively given away, or it belongs to our own peer, in
+					// which case we should set our version to the one received plus one,
+					// effectively imposing our existing entry.
+					if theirs.Peer != ourPeer && !hasAllocations(r.makeRanges(mine.Token, es.entry(i+1).Token)) {
+						common.Log.Infof("ring: repair inconsistent data by accepting token %v from %v - no allocations up to %v", theirs.Token, theirs.Peer, es.entry(i+1).Token)
+						addTheirs(*theirs)
+					} else if theirs.Peer == ourPeer {
+						mine.Version = theirs.Version + 1
+						addToResult(*mine)
+					} else {
+						err = errNewerVersion(mine, theirs)
+						return
+					}
+				} else {
+					addTheirs(*theirs)
 				}
-				addTheirs(*theirs)
 			}
 			i++
 			j++
@@ -334,6 +375,11 @@ func (r *Ring) Empty() bool {
 	return len(r.Entries) == 0
 }
 
+// convenience function to normalise a single range that may span zero
+func (r *Ring) makeRanges(start, end address.Address) []address.Range {
+	return r.splitRangesOverZero([]address.Range{{Start: start, End: end}})
+}
+
 // Given a slice of ranges which are all in the right order except
 // possibly the last one spans zero, fix that up and return the slice
 func (r *Ring) splitRangesOverZero(ranges []address.Range) []address.Range {
@@ -384,10 +430,7 @@ type RangeInfo struct {
 
 func (r *Ring) AllRangeInfo() (result []RangeInfo) {
 	for i, entry := range r.Entries {
-		nextEntry := r.Entries.entry(i + 1)
-		ranges := []address.Range{{Start: entry.Token, End: nextEntry.Token}}
-		ranges = r.splitRangesOverZero(ranges)
-		for _, r := range ranges {
+		for _, r := range r.makeRanges(entry.Token, r.Entries.entry(i+1).Token) {
 			result = append(result, RangeInfo{entry.Peer, r, entry.Version})
 		}
 	}
@@ -485,6 +528,7 @@ func (r *Ring) ReportFree(freespace map[address.Address]address.Count) (updated
 
 		entries[i].Free = free
 		entries[i].Version++
+		common.Log.Debugf("[ring %s]: ReportFree token=%s peer=%s version=%v", r.Peer, entries[i].Token, entries[i].Peer, entries[i].Version)
 		updated = true
 	}
 	return
@@ -516,7 +560,7 @@ func (r *Ring) ChoosePeersToAskForSpace(start, end address.Address) []mesh.PeerN
 			break
 		}
 		// Ignore ranges with no free space
-		if entry.Free <= 0 {
+		if entry.Free == 0 {
 			continue
 		}
 
@@ -565,7 +609,10 @@ func (r *Ring) Transfer(from, to mesh.PeerName) []address.Range {
 	for i, entry := range r.Entries {
 		if entry.Peer == from {
 			entry.Peer = to
-			entry.Version++
+			// bump version by large value so that transfer of range takes precedence (if there is any conflict in merging entry)
+			// over other opertaions on the entry that increments the version
+			entry.Version = entry.Version + 100
+			common.Log.Debugf("[ring %s]: Transfer token=%s from=%s to=%s version=%v", r.Peer, entry.Token, from, to, entry.Version)
 			newRanges = append(newRanges, address.Range{Start: entry.Token, End: r.Entries.entry(i + 1).Token})
 		}
 	}

ipam/ring/ring_test.go

@@ -10,8 +10,8 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 var (
@@ -32,7 +32,27 @@ func ParseIP(s string) address.Address {
 }
 
 func merge(r1, r2 *Ring) error {
-	_, err := r1.Merge(*r2)
+	distance := func(start, end address.Address) address.Count {
+		if end > start {
+			return address.Count(end - start)
+		}
+		return address.Count((r1.End - start) + (end - r1.Start))
+	}
+	check := func(rs []address.Range) bool {
+		for _, r := range rs {
+			size := distance(r.Start, r.End)
+			entry, found := r1.Entries.get(r.Start)
+			if !found {
+				continue
+			}
+			if entry.Free < size {
+				return true
+			}
+		}
+		return false
+	}
+
+	_, err := r1.Merge(*r2, check)
 	return err
 }
 
@@ -219,6 +239,61 @@ func TestMergeSimple(t *testing.T) {
 	require.Equal(t, ring2.Entries, ring1.Entries)
 }
 
+func TestMergeWithConflicts(t *testing.T) {
+
+	// received update to entry with a token and version identical to an entry we have
+	// but but holding different content, if there are no allocations, resolve the
+	// conflict by picking entry one with high free count
+	ring1 := NewRing(start, end, peer1name)
+	ring2 := NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name, Free: 256, Version: 1}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer2name, Free: 256, Version: 1}}
+	require.NoError(t, merge(ring1, ring2))
+
+	// received update to entry with a token and version identical to an entry we have
+	// but but holding different content, if there are allocations, then reject the received
+	// entry
+	ring1 = NewRing(start, end, peer1name)
+	ring2 = NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name, Free: 128, Version: 1}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer2name, Free: 256, Version: 1}}
+	require.Error(t, merge(ring1, ring2), "Expected error")
+
+	// received an entry with update to one of our own tokens and with new version,
+	// accept the received entry if its still going to belong to us
+	ring1 = NewRing(start, end, peer1name)
+	ring2 = NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer1name, Version: 1}}
+	require.NoError(t, merge(ring1, ring2))
+
+	// received an entry with update to one of our own tokens and with new version,
+	// but belongs to a different peer, accept the received entry if we do not
+	// have allocations in the range
+	ring1 = NewRing(start, end, peer1name)
+	ring2 = NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name, Free: 256}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer2name, Free: 256, Version: 1}}
+	require.NoError(t, merge(ring1, ring2))
+
+	// received an entry with update to one of our own tokens and with new version,
+	// reject received entry if we have allocations in the range
+	ring1 = NewRing(start, end, peer1name)
+	ring2 = NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name, Free: 128}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer2name, Version: 1}}
+	require.Error(t, merge(ring1, ring2), "Expected error")
+
+	// we receive an entry that splits one of our ranges, giving some of it
+	// away to another peer. accept the entry provided that we have no allocations
+	// in the range that got given away.
+	ring1 = NewRing(start, end, peer1name)
+	ring2 = NewRing(start, end, peer2name)
+	ring1.Entries = []*entry{{Token: start, Peer: peer1name, Free: 256, Version: 1}}
+	ring2.Entries = []*entry{{Token: start, Peer: peer1name, Free: 128, Version: 2}, {Token: middle, Peer: peer2name, Free: 128}}
+	require.NoError(t, merge(ring1, ring2))
+}
+
 func TestMergeErrors(t *testing.T) {
 	// Cannot Merge in an invalid ring
 	ring1 := NewRing(start, end, peer1name)
@@ -231,13 +306,6 @@ func TestMergeErrors(t *testing.T) {
 	ring2.Entries = []*entry{}
 	require.True(t, merge(ring1, ring2) == ErrDifferentRange, "Expected ErrDifferentRange")
 
-	// Cannot Merge newer version of entry I own
-	ring2 = NewRing(start, end, peer2name)
-	ring1.Entries = []*entry{{Token: start, Peer: peer1name}}
-	ring2.Entries = []*entry{{Token: start, Peer: peer1name, Version: 1}}
-	fmt.Println(merge(ring1, ring2))
-	require.Error(t, merge(ring1, ring2), "Expected error")
-
 	// Cannot Merge two entries with same version but different hosts
 	ring1.Entries = []*entry{{Token: start, Peer: peer1name}}
 	ring2.Entries = []*entry{{Token: start, Peer: peer2name}}

ipam/space/space.go

@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"sort"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 type Space struct {

ipam/space/space_test.go

@@ -3,9 +3,9 @@ package space
 import (
 	"testing"
 
+	"github.com/rajch/weave/net/address"
+	wt "github.com/rajch/weave/testing"
 	"github.com/stretchr/testify/require"
-	"github.com/weaveworks/weave/net/address"
-	wt "github.com/weaveworks/weave/testing"
 )
 
 func makeSpace(start address.Address, size address.Offset) *Space {
@@ -73,7 +73,7 @@ func TestLowlevel(t *testing.T) {
 
 	// test Donate when addresses are scarce
 	s = New()
-	r, ok = s.Donate(address.NewRange(0, 1000))
+	_, ok = s.Donate(address.NewRange(0, 1000))
 	require.True(t, !ok, "donate on empty space should fail")
 	s.Add(0, 3)
 	require.NoError(t, s.Claim(0))
@@ -81,7 +81,7 @@ func TestLowlevel(t *testing.T) {
 	r, ok = s.Donate(address.NewRange(0, 1000))
 	require.True(t, ok, "donate")
 	require.Equal(t, address.NewRange(1, 1), r, "donate")
-	r, ok = s.Donate(address.NewRange(0, 1000))
+	_, ok = s.Donate(address.NewRange(0, 1000))
 	require.True(t, !ok, "donate should fail")
 }
 

ipam/status.go

@@ -2,8 +2,9 @@ package ipam
 
 import (
 	"fmt"
-	"github.com/weaveworks/weave/ipam/paxos"
-	"github.com/weaveworks/weave/net/address"
+
+	"github.com/rajch/weave/ipam/paxos"
+	"github.com/rajch/weave/net/address"
 )
 
 type Status struct {

ipam/testutils_test.go

@@ -9,9 +9,9 @@ import (
 
 	"github.com/weaveworks/mesh"
 
+	"github.com/rajch/weave/net/address"
+	"github.com/rajch/weave/testing/gossip"
 	"github.com/stretchr/testify/require"
-	"github.com/weaveworks/weave/net/address"
-	"github.com/weaveworks/weave/testing/gossip"
 )
 
 type mockMessage struct {
@@ -24,14 +24,6 @@ func (m *mockMessage) String() string {
 	return fmt.Sprintf("-> %s [%x]", m.dst, m.buf)
 }
 
-func toStringArray(messages []mockMessage) []string {
-	out := make([]string, len(messages))
-	for i := range out {
-		out[i] = messages[i].String()
-	}
-	return out
-}
-
 type mockGossipComms struct {
 	sync.RWMutex
 	*testing.T
@@ -65,6 +57,9 @@ func (m *mockGossipComms) GossipBroadcast(update mesh.GossipData) {
 	}
 }
 
+func (m *mockGossipComms) GossipNeighbourSubset(update mesh.GossipData) {
+	m.GossipBroadcast(update)
+}
 func equalByteBuffer(a, b []byte) bool {
 	if len(a) != len(b) {
 		return false
@@ -97,14 +92,6 @@ func (m *mockGossipComms) GossipUnicast(dstPeerName mesh.PeerName, buf []byte) e
 	return nil
 }
 
-func ExpectMessage(alloc *Allocator, dst string, msgType byte, buf []byte) {
-	m := alloc.gossip.(*mockGossipComms)
-	dstPeerName, _ := mesh.PeerNameFromString(dst)
-	m.Lock()
-	m.messages = append(m.messages, mockMessage{dstPeerName, msgType, buf})
-	m.Unlock()
-}
-
 func ExpectBroadcastMessage(alloc *Allocator, buf []byte) {
 	m := alloc.gossip.(*mockGossipComms)
 	m.Lock()
@@ -205,15 +192,6 @@ func AssertNothingSent(t *testing.T, ch <-chan bool) {
 	}
 }
 
-func AssertNothingSentErr(t *testing.T, ch <-chan error) {
-	select {
-	case val := <-ch:
-		require.FailNow(t, fmt.Sprintf("Unexpected value on channel: %v", val))
-	default:
-		// no message received
-	}
-}
-
 func makeNetworkOfAllocators(size int, cidr string, preClaims ...[]PreClaim) ([]*Allocator, *gossip.TestRouter, address.CIDR) {
 	gossipRouter := gossip.NewTestRouter(0.0)
 	allocs := make([]*Allocator, size)

ipam/tracker/awsvpc.go

@@ -29,8 +29,8 @@ import (
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/vishvananda/netlink"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 type AWSVPCTracker struct {
@@ -84,7 +84,7 @@ func NewAWSVPCTracker(bridgeName string) (*AWSVPCTracker, error) {
 func (t *AWSVPCTracker) HandleUpdate(prevRanges, currRanges []address.Range, local bool) error {
 	t.debugf("replacing %q by %q; local(%t)", prevRanges, currRanges, local)
 
-	prev, curr := RemoveCommon(address.NewCIDRs(Merge(prevRanges)), address.NewCIDRs(Merge(currRanges)))
+	prev, curr := address.RemoveCommon(address.NewCIDRs(address.Merge(prevRanges)), address.NewCIDRs(address.Merge(currRanges)))
 
 	// It might make sense to do the removal first and then add entries
 	// because of the 50 routes limit. However, in such case a container might

ipam/tracker/helpers.go

@@ -1,46 +0,0 @@
-package tracker
-
-import (
-	"github.com/weaveworks/weave/net/address"
-)
-
-// Merge merges adjacent range entries.
-// The given slice has to be sorted in increasing order.
-func Merge(r []address.Range) []address.Range {
-	var merged []address.Range
-
-	for i := range r {
-		if prev := len(merged) - 1; prev >= 0 && merged[prev].End == r[i].Start {
-			merged[prev].End = r[i].End
-		} else {
-			merged = append(merged, r[i])
-		}
-	}
-
-	return merged
-}
-
-// RemoveCommon filters out CIDR ranges which are contained in both a and b slices.
-// Both slices have to be sorted in increasing order.
-func RemoveCommon(a, b []address.CIDR) (newA, newB []address.CIDR) {
-	i, j := 0, 0
-
-	for i < len(a) && j < len(b) {
-		switch {
-		case a[i].Start() < b[j].Start() || a[i].End() < b[j].End():
-			newA = append(newA, a[i])
-			i++
-		case a[i].Start() > b[j].Start() || a[i].End() > b[j].End():
-			newB = append(newB, b[j])
-			j++
-		default:
-			i++
-			j++
-		}
-
-	}
-	newA = append(newA, a[i:]...)
-	newB = append(newB, b[j:]...)
-
-	return
-}

ipam/tracker/helpers_test.go

@@ -1,52 +0,0 @@
-package tracker
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/weaveworks/weave/net/address"
-)
-
-var (
-	r0to127     = cidr("10.0.0.0", "10.0.0.127")
-	r128to255   = cidr("10.0.0.128", "10.0.0.255")
-	r0to255     = cidr("10.0.0.0", "10.0.0.255")
-	r1dot0to255 = cidr("10.0.1.0", "10.0.1.255")
-	r2dot0to255 = cidr("10.0.2.0", "10.0.2.255")
-)
-
-func TestRemoveCommon(t *testing.T) {
-	a := []address.CIDR{r0to127, r1dot0to255}
-	b := []address.CIDR{r1dot0to255, r2dot0to255}
-	newA, newB := RemoveCommon(a, b)
-	require.Equal(t, []address.CIDR{r0to127}, newA)
-	require.Equal(t, []address.CIDR{r2dot0to255}, newB)
-}
-
-func TestMerge(t *testing.T) {
-	ranges := []address.Range{
-		r0to127.Range(),
-		r128to255.Range(),
-		r2dot0to255.Range(),
-	}
-	require.Equal(t, []address.Range{r0to255.Range(), r2dot0to255.Range()}, Merge(ranges))
-}
-
-// Helper
-
-// TODO(mp) DRY with helpers of other tests.
-
-func ip(s string) address.Address {
-	addr, _ := address.ParseIP(s)
-	return addr
-}
-
-// [start; end]
-func cidr(start, end string) address.CIDR {
-	c := address.Range{Start: ip(start), End: ip(end) + 1}.CIDRs()
-	if len(c) != 1 {
-		panic("invalid cidr")
-	}
-	return c[0]
-}

ipam/tracker/tracker.go

@@ -1,7 +1,7 @@
 package tracker
 
 import (
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/net/address"
 )
 
 // LocalRangeTracker is an interface for tracking changes in the IPAM ring.

nameserver/dns.go

@@ -13,7 +13,7 @@ import (
 
 	"github.com/miekg/dns"
 
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/net/address"
 )
 
 const (
@@ -90,7 +90,7 @@ type DNSServer struct {
 	ns      *Nameserver
 	domain  string
 	ttl     uint32
-	address string
+	address string // listen address and port, e.g. 1.2.3.4:53
 
 	servers   []*dns.Server
 	upstream  Upstream
@@ -99,6 +99,10 @@ type DNSServer struct {
 }
 
 func NewDNSServer(ns *Nameserver, domain, address string, upstream Upstream, ttl uint32, clientTimeout time.Duration) (*DNSServer, error) {
+	if _, _, err := net.SplitHostPort(address); err != nil {
+		return nil, fmt.Errorf("invalid DNS listen address %q: %v", address, err)
+	}
+
 	s := &DNSServer{
 		ns:        ns,
 		domain:    dns.Fqdn(domain),
@@ -269,7 +273,7 @@ func (h *handler) handleRecursive(w dns.ResponseWriter, req *dns.Msg) {
 		reqCopy := req.Copy()
 		reqCopy.Id = dns.Id()
 		response, _, err := h.client.Exchange(reqCopy, fmt.Sprintf("%s:%s", server, upstreamConfig.Port))
-		if (err != nil && err != dns.ErrTruncated) || response == nil {
+		if (err != nil) || response == nil {
 			h.ns.debugf("error trying %s: %v", server, err)
 			continue
 		}

nameserver/dns_test.go

@@ -11,8 +11,8 @@ import (
 	"github.com/miekg/dns"
 	"github.com/stretchr/testify/require"
 
+	"github.com/rajch/weave/net/address"
 	"github.com/weaveworks/mesh"
-	"github.com/weaveworks/weave/net/address"
 )
 
 type mockUpstream struct {
@@ -41,23 +41,20 @@ func TestTruncation(t *testing.T) {
 	defer dnsserver.Stop()
 
 	// Add 100 mappings to nameserver
-	addrs := []address.Address{}
 	for i := address.Address(0); i < 100; i++ {
-		addrs = append(addrs, i)
 		nameserver.AddEntry("foo.weave.local.", "", mesh.UnknownPeerName, i)
 	}
 
-	doRequest := func(client *dns.Client, request *dns.Msg, port int, expectedErr error) *dns.Msg {
+	doRequest := func(client *dns.Client, request *dns.Msg, port int) *dns.Msg {
 		request.SetQuestion("foo.weave.local.", dns.TypeA)
-		response, _, err := client.Exchange(request, fmt.Sprintf("127.0.0.1:%d", port))
-		require.Equal(t, expectedErr, err)
+		response, _, _ := client.Exchange(request, fmt.Sprintf("127.0.0.1:%d", port))
 		return response
 	}
 
 	// do a udp query, ensure we get a truncated response
 	{
 		udpClient := dns.Client{Net: "udp", UDPSize: minUDPSize}
-		response := doRequest(&udpClient, &dns.Msg{}, udpPort, dns.ErrTruncated)
+		response := doRequest(&udpClient, &dns.Msg{}, udpPort)
 		require.True(t, response.MsgHdr.Truncated)
 		require.True(t, len(response.Answer) < 100)
 	}
@@ -67,7 +64,7 @@ func TestTruncation(t *testing.T) {
 		udpClient := dns.Client{Net: "udp", UDPSize: 65535}
 		request := &dns.Msg{}
 		request.SetEdns0(65535, false)
-		response := doRequest(&udpClient, request, udpPort, nil)
+		response := doRequest(&udpClient, request, udpPort)
 		require.False(t, response.MsgHdr.Truncated)
 		require.Equal(t, len(response.Answer), 100)
 	}
@@ -75,7 +72,7 @@ func TestTruncation(t *testing.T) {
 	// do a tcp query, ensure we don't get a truncated response
 	{
 		tcpClient := dns.Client{Net: "tcp"}
-		response := doRequest(&tcpClient, &dns.Msg{}, tcpPort, nil)
+		response := doRequest(&tcpClient, &dns.Msg{}, tcpPort)
 		require.False(t, response.MsgHdr.Truncated)
 		require.Equal(t, len(response.Answer), 100)
 	}

nameserver/entry.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/net/address"
 )
 
 var now = func() int64 { return time.Now().Unix() }

nameserver/entry_test.go

@@ -6,7 +6,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/net/address"
 )
 
 func l(es Entries) Entries {

nameserver/http.go

@@ -3,13 +3,14 @@ package nameserver
 import (
 	"encoding/json"
 	"fmt"
+	"net"
 	"net/http"
 
 	"github.com/gorilla/mux"
 	"github.com/miekg/dns"
 
-	"github.com/weaveworks/weave/common/docker"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common/docker"
+	"github.com/rajch/weave/net/address"
 )
 
 func (n *Nameserver) badRequest(w http.ResponseWriter, err error) {
@@ -84,3 +85,13 @@ func (n *Nameserver) HandleHTTP(router *mux.Router, dockerCli *docker.Client) {
 		}
 	})
 }
+
+func (d *DNSServer) HandleHTTP(router *mux.Router) {
+	router.Methods("GET").Path("/dns-address-port").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprint(w, d.address)
+	})
+	router.Methods("GET").Path("/dns-address").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		host, _, _ := net.SplitHostPort(d.address) // address is validated in NewDNSServer()
+		fmt.Fprint(w, host)
+	})
+}

nameserver/nameserver.go

@@ -8,8 +8,8 @@ import (
 	"github.com/miekg/dns"
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/address"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/address"
 )
 
 const (

nameserver/nameserver_test.go

@@ -12,8 +12,8 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/weaveworks/mesh"
 
-	"github.com/weaveworks/weave/net/address"
-	"github.com/weaveworks/weave/testing/gossip"
+	"github.com/rajch/weave/net/address"
+	"github.com/rajch/weave/testing/gossip"
 )
 
 func makeNameserver(name mesh.PeerName) *Nameserver {

net/address/address.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"net"
 
-	"github.com/weaveworks/weave/common"
+	"github.com/rajch/weave/common"
 )
 
 // Using 32-bit integer to represent IPv4 address

net/address/helpers.go

@@ -0,0 +1,42 @@
+package address
+
+// Merge merges adjacent range entries.
+// The given slice has to be sorted in increasing order.
+func Merge(r []Range) []Range {
+	var merged []Range
+
+	for i := range r {
+		if prev := len(merged) - 1; prev >= 0 && merged[prev].End == r[i].Start {
+			merged[prev].End = r[i].End
+		} else {
+			merged = append(merged, r[i])
+		}
+	}
+
+	return merged
+}
+
+// RemoveCommon filters out CIDR ranges which are contained in both a and b slices.
+// Both slices have to be sorted in increasing order.
+func RemoveCommon(a, b []CIDR) (newA, newB []CIDR) {
+	i, j := 0, 0
+
+	for i < len(a) && j < len(b) {
+		switch {
+		case a[i].Start() < b[j].Start() || a[i].End() < b[j].End():
+			newA = append(newA, a[i])
+			i++
+		case a[i].Start() > b[j].Start() || a[i].End() > b[j].End():
+			newB = append(newB, b[j])
+			j++
+		default:
+			i++
+			j++
+		}
+
+	}
+	newA = append(newA, a[i:]...)
+	newB = append(newB, b[j:]...)
+
+	return
+}

net/address/helpers_test.go

@@ -0,0 +1,43 @@
+package address
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	r0to127     = cidr2("10.0.0.0", "10.0.0.127")
+	r128to255   = cidr2("10.0.0.128", "10.0.0.255")
+	r0to255     = cidr2("10.0.0.0", "10.0.0.255")
+	r1dot0to255 = cidr2("10.0.1.0", "10.0.1.255")
+	r2dot0to255 = cidr2("10.0.2.0", "10.0.2.255")
+)
+
+func TestRemoveCommon(t *testing.T) {
+	a := []CIDR{r0to127, r1dot0to255}
+	b := []CIDR{r1dot0to255, r2dot0to255}
+	newA, newB := RemoveCommon(a, b)
+	require.Equal(t, []CIDR{r0to127}, newA)
+	require.Equal(t, []CIDR{r2dot0to255}, newB)
+}
+
+func TestMerge(t *testing.T) {
+	ranges := []Range{
+		r0to127.Range(),
+		r128to255.Range(),
+		r2dot0to255.Range(),
+	}
+	require.Equal(t, []Range{r0to255.Range(), r2dot0to255.Range()}, Merge(ranges))
+}
+
+// Helper
+
+// [start; end]
+func cidr2(start, end string) CIDR {
+	c := Range{Start: ip(start), End: ip(end) + 1}.CIDRs()
+	if len(c) != 1 {
+		panic("invalid cidr")
+	}
+	return c[0]
+}

net/arp.go

@@ -41,3 +41,11 @@ func sysctl(procPath, variable, value string) error {
 
 	return nil
 }
+
+func sysctlIfExists(procPath, variable, value string) error {
+	err := sysctl(procPath, variable, value)
+	if err != nil && os.IsNotExist(err) {
+		err = nil // ignore 'not found' errors
+	}
+	return err
+}

net/bridge.go

@@ -5,19 +5,18 @@ import (
 	"io/ioutil"
 	"net"
 	"path/filepath"
+	"syscall"
 
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/vishvananda/netlink"
-	"k8s.io/apimachinery/pkg/types"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/common/odp"
-	"github.com/weaveworks/weave/ipam/tracker"
-	"github.com/weaveworks/weave/net/address"
-	"github.com/weaveworks/weave/net/ipset"
-	"github.com/weaveworks/weave/npc"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/common/chains"
+	"github.com/rajch/weave/common/odp"
+	"github.com/rajch/weave/net/address"
+	"github.com/rajch/weave/net/ipset"
 )
 
 /* This code implements three possible configurations to connect
@@ -49,7 +48,7 @@ the "datapath" device, via "router/fastdp.go:fastDatapathBridge"
 
 "weave" is an Open vSwitch datapath, and capture/injection are as in
 BridgedFastdp. Not used by default due to missing conntrack support in
-datapath of old kernel versions (https://github.com/weaveworks/weave/issues/1577).
+datapath of old kernel versions (https://github.com/rajch/weave/issues/1577).
 */
 
 const (
@@ -62,10 +61,10 @@ const (
 )
 
 type Bridge interface {
-	init(config *BridgeConfig) error // create and initialise bridge device(s)
-	attach(veth *netlink.Veth) error // attach veth to bridge
-	IsFastdp() bool                  // does this bridge use fastdp?
-	String() string                  // human-readable type string
+	init(procPath string, config *BridgeConfig) error // create and initialise bridge device(s)
+	attach(veth *netlink.Veth) error                  // attach veth to bridge
+	IsFastdp() bool                                   // does this bridge use fastdp?
+	String() string                                   // human-readable type string
 }
 
 // Used to indicate a fallback to the Bridge type
@@ -220,6 +219,7 @@ type BridgeConfig struct {
 	MTU              int
 	Mac              string
 	Port             int
+	ControlPort      string
 	NoMasqLocal      bool
 }
 
@@ -249,7 +249,7 @@ func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger, ips
 	}
 
 	for {
-		if err := bridgeType.init(config); err != nil {
+		if err := bridgeType.init(procPath, config); err != nil {
 			if errors.Cause(err) == errBridgeNotSupported {
 				log.Warnf("Skipping bridge creation of %q due to: %s", bridgeType, err)
 				bridgeType = bridgeImpl{}
@@ -260,7 +260,7 @@ func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger, ips
 		break
 	}
 
-	if err := configureIPTables(config, ips); err != nil {
+	if err := ConfigureIPTables(config, ips); err != nil {
 		return bridgeType, errors.Wrap(err, "configuring iptables")
 	}
 
@@ -278,18 +278,24 @@ func EnsureBridge(procPath string, config *BridgeConfig, log *logrus.Logger, ips
 			return bridgeType, errors.Wrap(err, "setting proxy_arp")
 		}
 	}
+	// No ipv6 router advertisments please
+	if err := sysctlIfExists(procPath, "net/ipv6/conf/"+config.WeaveBridgeName+"/accept_ra", "0"); err != nil {
+		return bridgeType, errors.Wrap(err, "setting accept_ra to 0")
+	}
 
 	if err := linkSetUpByName(config.WeaveBridgeName); err != nil {
 		return bridgeType, err
 	}
 
+	if err := monitorInterface(config.WeaveBridgeName, log); err != nil {
+		return bridgeType, err
+	}
+
 	if err := configureARPCache(procPath, config.WeaveBridgeName); err != nil {
 		return bridgeType, errors.Wrapf(err, "configuring ARP cache on bridge %q", config.WeaveBridgeName)
 	}
 
-	// NB: No concurrent call to Expose is possible, as EnsureBridge is called
-	// before any service has been started.
-	if err := reexpose(config, log); err != nil {
+	if err := Reexpose(config, log); err != nil {
 		return bridgeType, err
 	}
 
@@ -304,7 +310,10 @@ func (b bridgeImpl) initPrep(config *BridgeConfig) error {
 
 	linkAttrs := netlink.NewLinkAttrs()
 	linkAttrs.Name = config.WeaveBridgeName
-	linkAttrs.HardwareAddr = mac
+	// NB: Do not set MAC addr when creating the bridge, set it manually
+	// afterwards instead. Otherwise, on an older than 3.14 kernel FDB
+	// entry won't be created which results in containers not being able to
+	// reach the bridge w/o promiscuous mode.
 	if config.MTU == 0 {
 		config.MTU = 65535
 	}
@@ -337,11 +346,11 @@ func (b bridgeImpl) initPrep(config *BridgeConfig) error {
 	return nil
 }
 
-func (b bridgeImpl) init(config *BridgeConfig) error {
+func (b bridgeImpl) init(procPath string, config *BridgeConfig) error {
 	if err := b.initPrep(config); err != nil {
 		return err
 	}
-	if _, err := CreateAndAttachVeth(BridgeIfName, PcapIfName, config.WeaveBridgeName, config.MTU, true, false, func(veth netlink.Link) error {
+	if _, err := CreateAndAttachVeth(procPath, BridgeIfName, PcapIfName, config.WeaveBridgeName, config.MTU, true, false, func(veth netlink.Link) error {
 		return netlink.LinkSetUp(veth)
 	}); err != nil {
 		return errors.Wrap(err, "creating pcap veth pair")
@@ -353,7 +362,7 @@ func (b bridgeImpl) init(config *BridgeConfig) error {
 	return nil
 }
 
-func (f fastdpImpl) init(config *BridgeConfig) error {
+func (f fastdpImpl) init(procPath string, config *BridgeConfig) error {
 	odpSupported, err := odp.CreateDatapath(f.datapathName)
 	if !odpSupported {
 		msg := ""
@@ -384,14 +393,14 @@ func (f fastdpImpl) init(config *BridgeConfig) error {
 	return nil
 }
 
-func (bf bridgedFastdpImpl) init(config *BridgeConfig) error {
-	if err := bf.fastdpImpl.init(config); err != nil {
+func (bf bridgedFastdpImpl) init(procPath string, config *BridgeConfig) error {
+	if err := bf.fastdpImpl.init(procPath, config); err != nil {
 		return err
 	}
 	if err := bf.bridgeImpl.initPrep(config); err != nil {
 		return err
 	}
-	if _, err := CreateAndAttachVeth(BridgeIfName, DatapathIfName, config.WeaveBridgeName, config.MTU, true, false, func(veth netlink.Link) error {
+	if _, err := CreateAndAttachVeth(procPath, BridgeIfName, DatapathIfName, config.WeaveBridgeName, config.MTU, true, false, func(veth netlink.Link) error {
 		if err := netlink.LinkSetUp(veth); err != nil {
 			return errors.Wrapf(err, "setting link up on %q", veth.Attrs().Name)
 		}
@@ -418,10 +427,40 @@ func (f fastdpImpl) attach(veth *netlink.Veth) error {
 	return odp.AddDatapathInterfaceIfNotExist(f.datapathName, veth.Attrs().Name)
 }
 
-func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
+// ResetIPTables resets IPTables in case they're in a strange state from a previous run.
+func ResetIPTables(config *BridgeConfig, ips ipset.Interface) error {
 	ipt, err := iptables.New()
 	if err != nil {
-		return errors.Wrap(err, "creating iptables object")
+		return errors.Wrap(err, "creating iptables object while resetting")
+	}
+
+	if !config.NPC {
+		// Create/Flush a chain for allowing ingress traffic when the bridge is exposed
+		if err := ipt.ClearChain("filter", "WEAVE-EXPOSE"); err != nil {
+			return errors.Wrap(err, "failed to clear/create filter/WEAVE-EXPOSE chain")
+		}
+	}
+
+	if err := ipt.ClearChain("nat", "WEAVE"); err != nil {
+		return errors.Wrap(err, "failed to clear/create nat/WEAVE chain")
+	}
+
+	if config.NoMasqLocal {
+		ips := ipset.New(common.LogLogger(), 0)
+		_ = ips.Destroy(NoMasqLocalIpset)
+		if err := ips.Create(NoMasqLocalIpset, ipset.HashNet); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ConfigureIPTables idempotently configures all the iptables!
+func ConfigureIPTables(config *BridgeConfig, ips ipset.Interface) error {
+	ipt, err := iptables.New()
+	if err != nil {
+		return errors.Wrap(err, "creating iptables object while configuring")
 	}
 
 	// The order among weave filter/FORWARD rules is important!
@@ -457,15 +496,27 @@ func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 		}
 	}
 
+	if config.ControlPort != "" {
+		if err = ipt.AppendUnique("filter", "INPUT", "-p", "tcp", "--dst", "127.0.0.1", "--dport", config.ControlPort,
+			"-m", "addrtype", "!", "--src-type", "LOCAL",
+			"-m", "conntrack", "!", "--ctstate", "RELATED,ESTABLISHED",
+			"-m", "comment", "--comment", "Block non-local access to Weave Net control port",
+			"-j", "DROP"); err != nil {
+			return err
+		}
+	}
+	// Remove the rule from Weave Net 2.6.3 which dropped too much.
+	_ = ipt.Delete("filter", "INPUT", "-p", "tcp", "--dst", "127.0.0.1", "-m", "addrtype", "!", "--src-type", "LOCAL", "-m", "conntrack", "!", "--ctstate", "RELATED,ESTABLISHED", "-j", "DROP")
+
 	if config.NPC {
 		// Steer traffic via the NPC.
 
-		if err = ensureChains(ipt, "filter", npc.MainChain, npc.EgressChain); err != nil {
+		if err = ensureChains(ipt, "filter", chains.MainChain, chains.EgressChain); err != nil {
 			return err
 		}
 
 		// Steer egress traffic destined to local node.
-		if err = ipt.AppendUnique("filter", "INPUT", "-i", config.WeaveBridgeName, "-j", npc.EgressChain); err != nil {
+		if err = ipt.AppendUnique("filter", "INPUT", "-i", config.WeaveBridgeName, "-j", chains.EgressChain); err != nil {
 			return err
 		}
 		fwdRules = append(fwdRules,
@@ -474,11 +525,11 @@ func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 				// ACCEPT in WEAVE-NPC-EGRESS chain
 				{"-i", config.WeaveBridgeName,
 					"-m", "comment", "--comment", "NOTE: this must go before '-j KUBE-FORWARD'",
-					"-j", npc.EgressChain},
+					"-j", chains.EgressChain},
 				// The following rules are for ingress NPC processing
 				{"-o", config.WeaveBridgeName,
 					"-m", "comment", "--comment", "NOTE: this must go before '-j KUBE-FORWARD'",
-					"-j", npc.MainChain},
+					"-j", chains.MainChain},
 				{"-o", config.WeaveBridgeName, "-m", "state", "--state", "NEW", "-j", "NFLOG", "--nflog-group", "86"},
 				{"-o", config.WeaveBridgeName, "-j", "DROP"},
 			}...)
@@ -490,8 +541,8 @@ func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 
 	if !config.NPC {
 		// Create/Flush a chain for allowing ingress traffic when the bridge is exposed
-		if err := ipt.ClearChain("filter", "WEAVE-EXPOSE"); err != nil {
-			return errors.Wrap(err, "failed to clear/create filter/WEAVE-EXPOSE chain")
+		if err := ensureChains(ipt, "filter", "WEAVE-EXPOSE"); err != nil {
+			return errors.Wrap(err, "failed to ensure existence of filter/WEAVE-EXPOSE chain")
 		}
 
 		fwdRules = append(fwdRules, []string{"-o", config.WeaveBridgeName, "-j", "WEAVE-EXPOSE"})
@@ -507,26 +558,22 @@ func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 	}
 
 	// Create a chain for masquerading
-	if err := ipt.ClearChain("nat", "WEAVE"); err != nil {
-		return errors.Wrap(err, "failed to clear/create nat/WEAVE chain")
+	if err := ensureChains(ipt, "nat", "WEAVE"); err != nil {
+		return errors.Wrap(err, "failed to ensure existence of nat/WEAVE chain")
 	}
 	if err := ipt.AppendUnique("nat", "POSTROUTING", "-j", "WEAVE"); err != nil {
 		return err
 	}
 
 	// For the cases where the weave bridge is the default gateway for
-	// containers (e.g. Kubernetes): create the ipset to store CIDRs allocated
-	// by IPAM for local containers. In the case of Kubernetes, external traffic
-	// sent to these CIDRs avoids SNAT'ing so that NodePort with
-	// `"externalTrafficPolicy":"Local"` would receive packets with correct
-	// src IP addr.
+	// containers (e.g. Kubernetes): In `ResetIPTables` (which we assume
+	// to have been called at this point) we create an ipset to store CIDRs
+	// allocated by IPAM for local containers.
+	// In the case of Kubernetes, external traffic sent to these CIDRs
+	// avoids SNAT'ing so that NodePort with `"externalTrafficPolicy":"Local"`
+	// would receive packets with correct src IP addr.
 	if config.NoMasqLocal {
-		ips := ipset.New(common.LogLogger(), 0)
-		_ = ips.Destroy(NoMasqLocalIpset)
-		if err := ips.Create(NoMasqLocalIpset, ipset.HashNet); err != nil {
-			return err
-		}
-		if err := ipt.Insert("nat", "WEAVE", 1,
+		if err := ipt.AppendUnique("nat", "WEAVE",
 			"-m", "set", "--match-set", string(NoMasqLocalIpset), "dst",
 			"-m", "comment", "--comment", "Prevent SNAT to locally running containers",
 			"-j", "RETURN"); err != nil {
@@ -539,13 +586,13 @@ func configureIPTables(config *BridgeConfig, ips ipset.Interface) error {
 
 type NoMasqLocalTracker struct {
 	ips   ipset.Interface
-	owner types.UID
+	owner ipset.UID
 }
 
 func NewNoMasqLocalTracker(ips ipset.Interface) *NoMasqLocalTracker {
 	return &NoMasqLocalTracker{
 		ips:   ips,
-		owner: types.UID(0), // dummy ipset owner
+		owner: ipset.UID("0"), // dummy ipset owner
 	}
 }
 
@@ -558,9 +605,9 @@ func (t *NoMasqLocalTracker) HandleUpdate(prevRanges, currRanges []address.Range
 		return nil
 	}
 
-	prev, curr := tracker.RemoveCommon(
-		address.NewCIDRs(tracker.Merge(prevRanges)),
-		address.NewCIDRs(tracker.Merge(currRanges)))
+	prev, curr := address.RemoveCommon(
+		address.NewCIDRs(address.Merge(prevRanges)),
+		address.NewCIDRs(address.Merge(currRanges)))
 
 	for _, cidr := range curr {
 		if err := t.ips.AddEntry(t.owner, NoMasqLocalIpset, cidr.String(), ""); err != nil {
@@ -584,7 +631,7 @@ func linkSetUpByName(linkName string) error {
 	return netlink.LinkSetUp(link)
 }
 
-func reexpose(config *BridgeConfig, log *logrus.Logger) error {
+func Reexpose(config *BridgeConfig, log *logrus.Logger) error {
 	// Get existing IP addrs of the weave bridge.
 	// If the bridge hasn't been exposed, then this functions does nothing.
 	//
@@ -602,10 +649,31 @@ func reexpose(config *BridgeConfig, log *logrus.Logger) error {
 
 	for _, addr := range addrs {
 		log.Infof("Re-exposing %s on bridge %q", addr.IPNet, config.WeaveBridgeName)
-		if err := Expose(config.WeaveBridgeName, addr.IPNet, config.AWSVPC, config.NPC); err != nil {
+		if err := Expose(config.WeaveBridgeName, addr.IPNet, config.AWSVPC, config.NPC, false); err != nil {
 			return errors.Wrapf(err, "unable to re-expose %s on bridge: %q", addr.IPNet, config.WeaveBridgeName)
 		}
 	}
 
 	return nil
 }
+
+func monitorInterface(ifaceName string, log *logrus.Logger) error {
+	_, err := netlink.LinkByName(ifaceName)
+	if err != nil {
+		return fmt.Errorf("Unable to find link %q: %s", ifaceName, err)
+	}
+
+	updatesChannel := make(chan netlink.LinkUpdate)
+	if err := netlink.LinkSubscribe(updatesChannel, nil); err != nil {
+		return errors.Wrapf(err, "error monitoring link %q for UP/DOWN notifications", ifaceName)
+	}
+
+	go func() {
+		for update := range updatesChannel {
+			if update.Link.Attrs().Name == ifaceName && update.IfInfomsg.Flags&syscall.IFF_UP == 0 {
+				log.Errorf("Interface %q which needs to be in UP state for Weave functioning is found to be in DOWN state", ifaceName)
+			}
+		}
+	}()
+	return nil
+}

net/expose.go

@@ -18,7 +18,8 @@ import (
 // * "ipAddr" - IP addr to be assigned to the bridge.
 // * "removeDefaultRoute" - whether to remove a default route installed by the kernel (used only in the AWSVPC mode).
 // * "npc" - whether is Weave NPC running.
-func Expose(bridgeName string, ipAddr *net.IPNet, removeDefaultRoute, npc bool) error {
+// * "skipNAT" - whether to skip adding iptables NAT rules
+func Expose(bridgeName string, ipAddr *net.IPNet, removeDefaultRoute, npc bool, skipNAT bool) error {
 	ipt, err := iptables.New()
 	if err != nil {
 		return errors.Wrap(err, "iptables.New")
@@ -29,8 +30,10 @@ func Expose(bridgeName string, ipAddr *net.IPNet, removeDefaultRoute, npc bool)
 		return errors.Wrap(err, "addBridgeIPAddr")
 	}
 
-	if err := exposeNAT(ipt, cidr); err != nil {
-		return errors.Wrap(err, "exposeNAT")
+	if !skipNAT {
+		if err := exposeNAT(ipt, cidr); err != nil {
+			return errors.Wrap(err, "exposeNAT")
+		}
 	}
 
 	if !npc {
@@ -100,13 +103,8 @@ func addNatRule(ipt *iptables.IPTables, rulespec ...string) error {
 	// Loop until we get an exit code other than "temporarily unavailable"
 	for {
 		if err := ipt.AppendUnique("nat", "WEAVE", rulespec...); err != nil {
-			if ierr, ok := err.(*iptables.Error); ok {
-				if status, ok := ierr.ExitError.Sys().(syscall.WaitStatus); ok {
-					// (magic exit code 4 found in iptables source code; undocumented)
-					if status.ExitStatus() == 4 {
-						continue
-					}
-				}
+			if isResourceError(err) {
+				continue
 			}
 			return err
 		}

net/if.go

@@ -21,7 +21,7 @@ func ensureInterface(ifaceName string) (*net.Interface, error) {
 	ch := make(chan netlink.LinkUpdate)
 	// NB: We do not supply (and eventually close) a 'done' channel
 	// here since that can cause incorrect file descriptor
-	// re-usage. See https://github.com/weaveworks/weave/issues/2120
+	// re-usage. See https://github.com/rajch/weave/issues/2120
 	if err := netlink.LinkSubscribe(ch, nil); err != nil {
 		return nil, err
 	}

net/ipsec/ipsec.go

@@ -85,7 +85,7 @@ func New(log *logrus.Logger) (*IPSec, error) {
 
 // InitSALocal initializes inbound ipsec from remotePeer and triggers
 // the initialization on remotePeer.
-func (ipsec *IPSec) InitSALocal(localPeer, remotePeer mesh.PeerName, connUID uint64, localIP, remoteIP net.IP, udpPort int, sessionKey *[32]byte, initRemote func([]byte) error) error {
+func (ipsec *IPSec) InitSALocal(localPeer, remotePeer mesh.PeerName, connUID uint64, localIP, remoteIP net.IP, udpPort int, sessionKey *[32]byte) ([]byte, error) {
 	// ID of inbound SPI
 	spiID := getSPIId(remotePeer, localPeer, connUID)
 
@@ -95,17 +95,17 @@ func (ipsec *IPSec) InitSALocal(localPeer, remotePeer mesh.PeerName, connUID uin
 	// Derive SA key
 	nonce, err := genNonce()
 	if err != nil {
-		return errors.Wrap(err, "generate nonce")
+		return nil, errors.Wrap(err, "generate nonce")
 	}
 	key, err := deriveKey(sessionKey[:], nonce, localPeer)
 	if err != nil {
-		return errors.Wrap(err, "derive key")
+		return nil, errors.Wrap(err, "derive key")
 	}
 
 	// Allocate SA
 	sa, err := netlink.XfrmStateAllocSpi(xfrmAllocSpiState(remoteIP, localIP))
 	if err != nil {
-		return errors.Wrap(err, fmt.Sprintf("ip xfrm state allocspi (in, %s, %s)", remoteIP, localIP))
+		return nil, errors.Wrap(err, fmt.Sprintf("ip xfrm state allocspi (in, %s, %s)", remoteIP, localIP))
 	}
 
 	// Use SPI generated by the kernel. The kernel ensures {dstIP, spi} to
@@ -117,28 +117,24 @@ func (ipsec *IPSec) InitSALocal(localPeer, remotePeer mesh.PeerName, connUID uin
 	// Create SA
 	if sa, err := xfrmState(remoteIP, localIP, spi, false, key); err == nil {
 		if err := netlink.XfrmStateUpdate(sa); err != nil {
-			return errors.Wrap(err, fmt.Sprintf("xfrm state update (in, %s, %s, 0x%x)", sa.Src, sa.Dst, sa.Spi))
+			return nil, errors.Wrap(err, fmt.Sprintf("xfrm state update (in, %s, %s, 0x%x)", sa.Src, sa.Dst, sa.Spi))
 		}
 	} else {
-		return errors.Wrap(err, "new xfrm state (in)")
+		return nil, errors.Wrap(err, "new xfrm state (in)")
 	}
 
 	// Install iptables rules
 	if err := ipsec.installDropNonEncrypted(localIP, remoteIP, udpPort, spi); err != nil {
-		return errors.Wrap(err, fmt.Sprintf("install protecting rules (%s, %s, %d, 0x%x)", localIP, remoteIP, udpPort, spi))
+		return nil, errors.Wrap(err, fmt.Sprintf("install protecting rules (%s, %s, %d, 0x%x)", localIP, remoteIP, udpPort, spi))
 	}
 
 	si := spiInfo{spi: spi, isDirOut: false}
 	ipsec.spiInfo[spiID] = si
 	ipsec.spis[spi] = &si
 
-	// Trigger the initialization on the remote peer
+	// Generate the message to trigger initialization on the remote peer
 	msg := &msgInitSARemote{nonce, spi}
-	if err := initRemote(msg.serialize()); err != nil {
-		return errors.Wrap(err, "send InitSARemote")
-	}
-
-	return nil
+	return msg.serialize(), nil
 }
 
 // InitSARemote initializes outbound ipsec to remotePeer.
@@ -223,9 +219,19 @@ func (ipsec *IPSec) Destroy(localPeer, remotePeer mesh.PeerName, connUID uint64,
 
 	if outSPIInfo, ok := ipsec.spiInfo[outSPIID]; ok {
 		ipsec.log.Infof("ipsec: destroy: out %s -> %s 0x%x", localIP, remoteIP, outSPIInfo.spi)
-
-		if err := netlink.XfrmPolicyDel(xfrmPolicy(localIP, remoteIP, outSPIInfo.spi)); err != nil {
-			ipsec.log.Warnf("ipsec: xfrm policy del (%s, %s, 0x%x) failed: %s", localIP, remoteIP, outSPIInfo.spi, err)
+		policy, err := netlink.XfrmPolicyGet(xfrmPolicy(localIP, remoteIP, outSPIInfo.spi))
+		if err != nil {
+			ipsec.log.Warnf("ipsec: xfrm policy get (%s, %s, 0x%x) failed: %s", localIP, remoteIP, outSPIInfo.spi, err)
+		} else {
+			if len(policy.Tmpls) == 1 {
+				if policy.Tmpls[0].Spi == int(outSPIInfo.spi) {
+					if err := netlink.XfrmPolicyDel(xfrmPolicy(localIP, remoteIP, outSPIInfo.spi)); err != nil {
+						ipsec.log.Warnf("ipsec: xfrm policy del (%s, %s, 0x%x) failed: %s", localIP, remoteIP, outSPIInfo.spi, err)
+					}
+				} else {
+					ipsec.log.Debugf("ipsec: xfrm not my policy (%s, %s, 0x%x) got 0x%x ", localIP, remoteIP, outSPIInfo.spi, policy.Tmpls[0].Spi)
+				}
+			}
 		}
 
 		outSA := &netlink.XfrmState{
@@ -424,14 +430,6 @@ func (ipsec *IPSec) removeDropNonEncrypted(srcIP, dstIP net.IP, udpPort int, inS
 	return ipsec.resetRules(rules, true)
 }
 
-func (ipsec *IPSec) removeDropNonEncryptedInbound(srcIP, dstIP net.IP, inSPI SPI) error {
-	r := ruleMarkInboundESP(srcIP, dstIP, inSPI)
-	if err := ipsec.ipt.Delete(r.table, r.chain, r.rulespec...); err != nil {
-		return errors.Wrap(err, fmt.Sprintf("iptables delete unique (%s, %s, %s)", r.table, r.chain, r.rulespec))
-	}
-	return nil
-}
-
 // xfrm
 
 func xfrmAllocSpiState(srcIP, dstIP net.IP) *netlink.XfrmState {

net/ipset/ipset.go

@@ -7,26 +7,31 @@ import (
 	"log"
 	"os/exec"
 	"strings"
+	"time"
 
 	"github.com/pkg/errors"
-	"k8s.io/apimachinery/pkg/types"
 )
 
 type Name string
 
 type Type string
 
+type UID string
+
 const (
 	ListSet = Type("list:set")
 	HashIP  = Type("hash:ip")
 	HashNet = Type("hash:net")
+
+	DestroyRetrySleepMs = 100
 )
 
 type Interface interface {
 	Create(ipsetName Name, ipsetType Type) error
-	AddEntry(user types.UID, ipsetName Name, entry string, comment string) error
-	DelEntry(user types.UID, ipsetName Name, entry string) error
-	Exist(user types.UID, ipsetName Name, entry string) bool
+	AddEntry(user UID, ipsetName Name, entry string, comment string) error
+	DelEntry(user UID, ipsetName Name, entry string) error
+	EntryExists(user UID, ipsetName Name, entry string) bool
+	Exists(ipsetName Name) (bool, error)
 	Flush(ipsetName Name) error
 	Destroy(ipsetName Name) error
 
@@ -48,8 +53,8 @@ type ipset struct {
 	// List of users per ipset entry. User is either a namespace or a pod.
 	// There might be multiple users for the same ipset & entry pair because
 	// events from k8s API server might be out of order causing duplicate IPs:
-	// https://github.com/weaveworks/weave/issues/2792.
-	users map[entryKey]map[types.UID]struct{}
+	// https://github.com/rajch/weave/issues/2792.
+	users map[entryKey]map[UID]struct{}
 }
 
 func New(logger *log.Logger, maxListSize int) Interface {
@@ -57,7 +62,7 @@ func New(logger *log.Logger, maxListSize int) Interface {
 		Logger:         logger,
 		enableComments: true,
 		maxListSize:    maxListSize,
-		users:          make(map[entryKey]map[types.UID]struct{}),
+		users:          make(map[entryKey]map[UID]struct{}),
 	}
 
 	// Check for comment support
@@ -93,7 +98,7 @@ func (i *ipset) Create(ipsetName Name, ipsetType Type) error {
 	return doExec(args...)
 }
 
-func (i *ipset) AddEntry(user types.UID, ipsetName Name, entry string, comment string) error {
+func (i *ipset) AddEntry(user UID, ipsetName Name, entry string, comment string) error {
 	i.Logger.Printf("adding entry %s to %s of %s", entry, ipsetName, user)
 
 	if !i.addUser(user, ipsetName, entry) { // already in the set
@@ -109,7 +114,7 @@ func (i *ipset) AddEntry(user types.UID, ipsetName Name, entry string, comment s
 	return doExec(args...)
 }
 
-func (i *ipset) DelEntry(user types.UID, ipsetName Name, entry string) error {
+func (i *ipset) DelEntry(user UID, ipsetName Name, entry string) error {
 	i.Logger.Printf("deleting entry %s from %s of %s", entry, ipsetName, user)
 
 	if !i.delUser(user, ipsetName, entry) { // still needed
@@ -121,28 +126,52 @@ func (i *ipset) DelEntry(user types.UID, ipsetName Name, entry string) error {
 	return doExec("del", string(ipsetName), entry)
 }
 
-func (i *ipset) Exist(user types.UID, ipsetName Name, entry string) bool {
+func (i *ipset) EntryExists(user UID, ipsetName Name, entry string) bool {
 	return i.existUser(user, ipsetName, entry)
 }
 
+// Dummy way to check whether a given ipset exists.
+func (i *ipset) Exists(name Name) (bool, error) {
+	sets, err := i.List(string(name))
+	if err != nil {
+		return false, err
+	}
+	for _, s := range sets {
+		if s == name {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func (i *ipset) Flush(ipsetName Name) error {
 	i.removeSetFromUsers(ipsetName)
 	return doExec("flush", string(ipsetName))
 }
 
 func (i *ipset) FlushAll() error {
-	i.users = make(map[entryKey]map[types.UID]struct{})
+	i.users = make(map[entryKey]map[UID]struct{})
 	return doExec("flush")
 }
 
 func (i *ipset) Destroy(ipsetName Name) error {
 	i.removeSetFromUsers(ipsetName)
-	return doExec("destroy", string(ipsetName))
+	err := doExec("destroy", string(ipsetName))
+	if err != nil {
+		time.Sleep(DestroyRetrySleepMs * time.Millisecond)
+		return doExec("destroy", string(ipsetName))
+	}
+	return err
 }
 
 func (i *ipset) DestroyAll() error {
-	i.users = make(map[entryKey]map[types.UID]struct{})
-	return doExec("destroy")
+	i.users = make(map[entryKey]map[UID]struct{})
+	err := doExec("destroy")
+	if err != nil {
+		time.Sleep(DestroyRetrySleepMs * time.Millisecond)
+		return doExec("destroy")
+	}
+	return err
 }
 
 // Fetch a list of all existing sets with a given prefix
@@ -164,12 +193,12 @@ func (i *ipset) List(prefix string) ([]Name, error) {
 }
 
 // Returns true if entry does not exist in ipset (entry has to be inserted into ipset).
-func (i *ipset) addUser(user types.UID, ipsetName Name, entry string) bool {
+func (i *ipset) addUser(user UID, ipsetName Name, entry string) bool {
 	k := entryKey{ipsetName, entry}
 	add := false
 
 	if i.users[k] == nil {
-		i.users[k] = make(map[types.UID]struct{})
+		i.users[k] = make(map[UID]struct{})
 	}
 	if len(i.users[k]) == 0 {
 		add = true
@@ -180,7 +209,7 @@ func (i *ipset) addUser(user types.UID, ipsetName Name, entry string) bool {
 }
 
 // Returns true if user is the last owner of entry (entry has to be removed from ipset).
-func (i *ipset) delUser(user types.UID, ipsetName Name, entry string) bool {
+func (i *ipset) delUser(user UID, ipsetName Name, entry string) bool {
 	k := entryKey{ipsetName, entry}
 
 	oneLeft := len(i.users[k]) == 1
@@ -193,7 +222,7 @@ func (i *ipset) delUser(user types.UID, ipsetName Name, entry string) bool {
 	return oneLeft && (len(i.users[k]) == 0)
 }
 
-func (i *ipset) existUser(user types.UID, ipsetName Name, entry string) bool {
+func (i *ipset) existUser(user UID, ipsetName Name, entry string) bool {
 	_, ok := i.users[entryKey{ipsetName, entry}][user]
 	return ok
 }

net/iptables.go

@@ -2,9 +2,13 @@ package net
 
 import (
 	"strings"
+	"syscall"
+	"time"
 
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	utilwait "k8s.io/apimachinery/pkg/util/wait"
 )
 
 // AddChainWithRules creates a chain and appends given rules to it.
@@ -104,3 +108,119 @@ func ensureRulesAtTop(table, chain string, rulespecs [][]string, ipt *iptables.I
 
 	return nil
 }
+
+func chainExists(ipt *iptables.IPTables, table string, chain string) (bool, error) {
+	existingChains, err := ipt.ListChains(table)
+	if err != nil {
+		return false, errors.Wrapf(err, "ipt.ListChains(%s)", table)
+	}
+	chainMap := make(map[string]struct{})
+	for _, c := range existingChains {
+		chainMap[c] = struct{}{}
+	}
+
+	_, found := chainMap[chain]
+	return found, nil
+}
+
+const (
+	// Max time we wait for an iptables flush to complete after we notice it has started
+	iptablesFlushTimeout = 5 * time.Second
+	// How often we poll while waiting for an iptables flush to complete
+	iptablesFlushPollTime = 100 * time.Millisecond
+)
+
+// MonitorForIptablesFlush periodically checks for a canary chain in iptables. If this canary chain goes missing it calls the reloadFunc.
+// This is a more efficient way of detecting whether firewalld or another process has been removing rules that we rely on.
+// The reloadFunc can then check whether other chains that should exist are still there, fix things and restore the canary.
+func MonitorForIptablesFlush(log *logrus.Logger, canary string, tables []string, reloadFunc func(), interval time.Duration, stopCh <-chan struct{}) {
+	ipt, err := iptables.New()
+	if err != nil {
+		log.Errorf("creating iptables object while initializing iptable Monitoring %s", err)
+		return
+	}
+
+	for {
+		_ = PollImmediateUntil(interval, func() (bool, error) {
+			for _, table := range tables {
+				if err := ensureChains(ipt, table, canary); err != nil {
+					log.Warningf("Could not set up iptables canary %s/%s: %v", table, canary, err)
+					return false, nil
+				}
+			}
+			return true, nil
+		}, stopCh)
+
+		// Poll until stopCh is closed or iptables is flushed
+		err = utilwait.PollUntil(interval, func() (bool, error) {
+			if exists, err := chainExists(ipt, tables[0], canary); exists {
+				return false, nil
+			} else if isResourceError(err) {
+				log.Warningf("Could not check for iptables canary %s/%s: %v", tables[0], canary, err)
+				return false, nil
+			}
+			log.Infof("iptables canary %s/%s deleted", tables[0], canary)
+
+			// Wait for the other canaries to be deleted too before returning
+			// so we don't start reloading too soon.
+			err := utilwait.PollImmediate(iptablesFlushPollTime, iptablesFlushTimeout, func() (bool, error) {
+				for i := 1; i < len(tables); i++ {
+					if exists, err := chainExists(ipt, tables[i], canary); exists || isResourceError(err) {
+						return false, nil
+					}
+				}
+				return true, nil
+			})
+			if err != nil {
+				log.Warning("Inconsistent iptables state detected.")
+			}
+			return true, nil
+		}, stopCh)
+
+		if err != nil {
+			// stopCh was closed
+			for _, table := range tables {
+				_ = ipt.DeleteChain(table, canary)
+			}
+			return
+		}
+
+		log.Infof("Reloading after iptables flush")
+		reloadFunc()
+	}
+}
+
+const iptablesStatusResourceProblem = 4
+
+// isResourceError returns true if the error indicates that iptables ran into a "resource
+// problem" and was unable to attempt the request. In particular, this will be true if it
+// times out trying to get the iptables lock.
+func isResourceError(err error) bool {
+	if ierr, ok := err.(*iptables.Error); ok {
+		if status, ok := ierr.ExitError.Sys().(syscall.WaitStatus); ok {
+			return status.ExitStatus() == iptablesStatusResourceProblem
+		}
+	}
+
+	return false
+}
+
+// PollImmediateUntil tries a condition func until it returns true, an error or stopCh is closed.
+//
+// PollImmediateUntil runs the 'condition' before waiting for the interval.
+// 'condition' will always be invoked at least once.
+func PollImmediateUntil(interval time.Duration, condition utilwait.ConditionFunc, stopCh <-chan struct{}) error {
+	done, err := condition()
+	if err != nil {
+		return err
+	}
+	if done {
+		return nil
+	}
+	select {
+	case <-stopCh:
+		return utilwait.ErrWaitTimeout
+	default:
+		return utilwait.PollUntil(interval, condition, stopCh)
+	}
+}

net/netns.go

@@ -55,9 +55,9 @@ func WithNetNSByPath(path string, work func() error) error {
 }
 
 func NSPathByPid(pid int) string {
-	return NSPathByPidWithRoot("/", pid)
+	return NSPathByPidWithProc("/proc", pid)
 }
 
-func NSPathByPidWithRoot(root string, pid int) string {
-	return filepath.Join(root, fmt.Sprintf("/proc/%d/ns/net", pid))
+func NSPathByPidWithProc(procPath string, pid int) string {
+	return filepath.Join(procPath, fmt.Sprint(pid), "/ns/net")
 }

net/uuid.go

@@ -6,8 +6,8 @@ import (
 	"net"
 	"os"
 
+	"github.com/rajch/weave/db"
 	"github.com/weaveworks/mesh"
-	"github.com/weaveworks/weave/db"
 )
 
 func getOldStyleSystemUUID() ([]byte, error) {

net/veth.go

@@ -13,7 +13,7 @@ import (
 )
 
 // create and attach a veth to the Weave bridge
-func CreateAndAttachVeth(name, peerName, bridgeName string, mtu int, keepTXOn bool, errIfLinkExist bool, init func(peer netlink.Link) error) (*netlink.Veth, error) {
+func CreateAndAttachVeth(procPath, name, peerName, bridgeName string, mtu int, keepTXOn bool, errIfLinkExist bool, init func(peer netlink.Link) error) (*netlink.Veth, error) {
 	bridge, err := netlink.LinkByName(bridgeName)
 	if err != nil {
 		return nil, fmt.Errorf(`bridge "%s" not present; did you launch weave?`, bridgeName)
@@ -49,6 +49,13 @@ func CreateAndAttachVeth(name, peerName, bridgeName string, mtu int, keepTXOn bo
 	if err := bridgeType.attach(veth); err != nil {
 		return cleanup("attaching veth %q to %q: %s", name, bridgeName, err)
 	}
+	// No ipv6 router advertisments please
+	if err := sysctlIfExists(procPath, "net/ipv6/conf/"+name+"/accept_ra", "0"); err != nil {
+		return cleanup("setting accept_ra to 0: %s", err)
+	}
+	if err := sysctlIfExists(procPath, "net/ipv6/conf/"+peerName+"/accept_ra", "0"); err != nil {
+		return cleanup("setting accept_ra to 0: %s", err)
+	}
 	if !bridgeType.IsFastdp() && !keepTXOn {
 		if err := EthtoolTXOff(veth.PeerName); err != nil {
 			return cleanup(`unable to set tx off on %q: %s`, peerName, err)
@@ -112,6 +119,9 @@ func interfaceExistsInNamespace(netNSPath string, ifName string) bool {
 }
 
 func AttachContainer(netNSPath, id, ifName, bridgeName string, mtu int, withMulticastRoute bool, cidrs []*net.IPNet, keepTXOn bool, hairpinMode bool) error {
+	// AttachContainer expects to be called in host pid namespace
+	const procPath = "/proc"
+
 	ns, err := netns.GetFromPath(netNSPath)
 	if err != nil {
 		return err
@@ -124,12 +134,12 @@ func AttachContainer(netNSPath, id, ifName, bridgeName string, mtu int, withMult
 			id = id[:maxIDLen] // trim passed ID if too long
 		}
 		name, peerName := vethPrefix+"pl"+id, vethPrefix+"pg"+id
-		veth, err := CreateAndAttachVeth(name, peerName, bridgeName, mtu, keepTXOn, true, func(veth netlink.Link) error {
+		veth, err := CreateAndAttachVeth(procPath, name, peerName, bridgeName, mtu, keepTXOn, true, func(veth netlink.Link) error {
 			if err := netlink.LinkSetNsFd(veth, int(ns)); err != nil {
 				return fmt.Errorf("failed to move veth to container netns: %s", err)
 			}
 			if err := WithNetNS(ns, func() error {
-				return setupIface(peerName, ifName)
+				return setupIface(procPath, peerName, ifName)
 			}); err != nil {
 				return fmt.Errorf("error setting up interface: %s", err)
 			}
@@ -206,7 +216,7 @@ func setupIfaceAddrs(veth netlink.Link, withMulticastRoute bool, cidrs []*net.IP
 }
 
 // setupIface expects to be called in the container's netns
-func setupIface(ifaceName, newIfName string) error {
+func setupIface(procPath, ifaceName, newIfName string) error {
 	ipt, err := iptables.New()
 	if err != nil {
 		return err
@@ -219,15 +229,14 @@ func setupIface(ifaceName, newIfName string) error {
 	if err := netlink.LinkSetName(link, newIfName); err != nil {
 		return err
 	}
-	// This is only called by AttachContainer which is only called in host pid namespace
-	if err := configureARPCache("/proc", newIfName); err != nil {
+	if err := configureARPCache(procPath, newIfName); err != nil {
 		return err
 	}
 	return ipt.Append("filter", "INPUT", "-i", newIfName, "-d", "224.0.0.0/4", "-j", "DROP")
 }
 
 // configureARP is a helper for the Docker plugin which doesn't set the addresses itself
-func ConfigureARP(prefix, rootPath string) error {
+func ConfigureARP(prefix, procPath string) error {
 	links, err := netlink.LinkList()
 	if err != nil {
 		return err
@@ -235,7 +244,7 @@ func ConfigureARP(prefix, rootPath string) error {
 	for _, link := range links {
 		ifName := link.Attrs().Name
 		if strings.HasPrefix(ifName, prefix) {
-			configureARPCache(rootPath+"/proc", ifName)
+			configureARPCache(procPath, ifName)
 			if addrs, err := netlink.AddrList(link, netlink.FAMILY_V4); err == nil {
 				for _, addr := range addrs {
 					arping.GratuitousArpOverIfaceByName(addr.IPNet.IP, ifName)

npc/analyser.go

@@ -7,17 +7,19 @@ import (
 	networkingv1 "k8s.io/api/networking/v1"
 	"k8s.io/apimachinery/pkg/util/intstr"
 
-	"github.com/weaveworks/weave/net/ipset"
+	"github.com/rajch/weave/net/ipset"
 )
 
 func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 	rules map[string]*ruleSpec,
-	nsSelectors, podSelectors map[string]*selectorSpec,
+	nsSelectors, podSelectors, namespacedPodSelectors map[string]*selectorSpec,
 	ipBlocks map[string]*ipBlockSpec,
 	err error) {
 
 	nsSelectors = make(map[string]*selectorSpec)
 	podSelectors = make(map[string]*selectorSpec)
+	namespacedPodSelectors = make(map[string]*selectorSpec)
+
 	ipBlocks = make(map[string]*ipBlockSpec)
 	rules = make(map[string]*ruleSpec)
 	policyTypes := make([]policyType, 0)
@@ -31,9 +33,9 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 		}
 	}
 	// If empty, matches all pods in a namespace
-	targetSelector, err := newSelectorSpec(&policy.Spec.PodSelector, policyTypes, ns.name, ipset.HashIP)
+	targetSelector, err := newSelectorSpec(&policy.Spec.PodSelector, nil, policyTypes, ns.name, ipset.HashIP)
 	if err != nil {
-		return nil, nil, nil, nil, err
+		return nil, nil, nil, nil, nil, err
 	}
 
 	// To prevent targetSelector being overwritten by a subsequent selector with
@@ -50,6 +52,12 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 			// If From is empty or missing, this rule matches all sources
 			allSources := ingressRule.From == nil || len(ingressRule.From) == 0
 
+			if !allPorts {
+				if err = checkForNamedPorts(ingressRule.Ports); err != nil {
+					return nil, nil, nil, nil, nil, fmt.Errorf("named ports in network policies is not supported yet. "+
+						"Rejecting network policy: %s from further processing. "+err.Error(), policy.Name)
+				}
+			}
 			if allSources {
 				if allPorts {
 					rule := newRuleSpec(policyTypeIngress, nil, nil, targetSelector, nil)
@@ -63,30 +71,42 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 			} else {
 				for _, peer := range ingressRule.From {
 					var srcSelector *selectorSpec
+					var srcRuleHost ruleHost
 
 					// NetworkPolicyPeer describes a peer to allow traffic from.
-					// Exactly one of its fields must be specified.
-					if peer.PodSelector != nil {
-						srcSelector, err = newSelectorSpec(peer.PodSelector, nil, ns.name, ipset.HashIP)
+					if peer.PodSelector != nil && peer.NamespaceSelector != nil {
+						srcSelector, err = newSelectorSpec(peer.PodSelector, peer.NamespaceSelector, nil, "", ipset.HashIP)
 						if err != nil {
-							return nil, nil, nil, nil, err
+							return nil, nil, nil, nil, nil, err
+						}
+						addIfNotExist(srcSelector, namespacedPodSelectors)
+						srcRuleHost = srcSelector
+					} else if peer.PodSelector != nil {
+						srcSelector, err = newSelectorSpec(peer.PodSelector, nil, nil, ns.name, ipset.HashIP)
+						if err != nil {
+							return nil, nil, nil, nil, nil, err
 						}
 						addIfNotExist(srcSelector, podSelectors)
-
+						srcRuleHost = srcSelector
 					} else if peer.NamespaceSelector != nil {
-						srcSelector, err = newSelectorSpec(peer.NamespaceSelector, nil, "", ipset.ListSet)
+						srcSelector, err = newSelectorSpec(nil, peer.NamespaceSelector, nil, "", ipset.ListSet)
 						if err != nil {
-							return nil, nil, nil, nil, err
+							return nil, nil, nil, nil, nil, err
 						}
 						nsSelectors[srcSelector.key] = srcSelector
+						srcRuleHost = srcSelector
+					} else if peer.IPBlock != nil {
+						ipBlock := newIPBlockSpec(peer.IPBlock, ns.name)
+						ipBlocks[ipBlock.key] = ipBlock
+						srcRuleHost = ipBlock
 					}
 
 					if allPorts {
-						rule := newRuleSpec(policyTypeIngress, nil, srcSelector, targetSelector, nil)
+						rule := newRuleSpec(policyTypeIngress, nil, srcRuleHost, targetSelector, nil)
 						rules[rule.key] = rule
 					} else {
 						withNormalisedProtoAndPort(ingressRule.Ports, func(proto, port string) {
-							rule := newRuleSpec(policyTypeIngress, &proto, srcSelector, targetSelector, &port)
+							rule := newRuleSpec(policyTypeIngress, &proto, srcRuleHost, targetSelector, &port)
 							rules[rule.key] = rule
 						})
 					}
@@ -103,6 +123,12 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 			// If To is empty or missing, this rule matches all destinations
 			allDestinations := egressRule.To == nil || len(egressRule.To) == 0
 
+			if !allPorts {
+				if err = checkForNamedPorts(egressRule.Ports); err != nil {
+					return nil, nil, nil, nil, nil, fmt.Errorf("named ports in network policies is not supported yet. "+
+						"Rejecting network policy: %s from further processing. "+err.Error(), policy.Name)
+				}
+			}
 			if allDestinations {
 				if allPorts {
 					rule := newRuleSpec(policyTypeEgress, nil, targetSelector, nil, nil)
@@ -119,19 +145,25 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 					var dstRuleHost ruleHost
 
 					// NetworkPolicyPeer describes a peer to allow traffic to.
-					// Exactly one of its fields must be specified.
-					if peer.PodSelector != nil {
-						dstSelector, err = newSelectorSpec(peer.PodSelector, nil, ns.name, ipset.HashIP)
+					if peer.PodSelector != nil && peer.NamespaceSelector != nil {
+						dstSelector, err = newSelectorSpec(peer.PodSelector, peer.NamespaceSelector, nil, "", ipset.HashIP)
 						if err != nil {
-							return nil, nil, nil, nil, err
+							return nil, nil, nil, nil, nil, err
+						}
+						addIfNotExist(dstSelector, namespacedPodSelectors)
+						dstRuleHost = dstSelector
+					} else if peer.PodSelector != nil {
+						dstSelector, err = newSelectorSpec(peer.PodSelector, nil, nil, ns.name, ipset.HashIP)
+						if err != nil {
+							return nil, nil, nil, nil, nil, err
 						}
 						addIfNotExist(dstSelector, podSelectors)
 						dstRuleHost = dstSelector
 
 					} else if peer.NamespaceSelector != nil {
-						dstSelector, err = newSelectorSpec(peer.NamespaceSelector, nil, "", ipset.ListSet)
+						dstSelector, err = newSelectorSpec(nil, peer.NamespaceSelector, nil, "", ipset.ListSet)
 						if err != nil {
-							return nil, nil, nil, nil, err
+							return nil, nil, nil, nil, nil, err
 						}
 						nsSelectors[dstSelector.key] = dstSelector
 						dstRuleHost = dstSelector
@@ -155,7 +187,7 @@ func (ns *ns) analysePolicy(policy *networkingv1.NetworkPolicy) (
 		}
 	}
 
-	return rules, nsSelectors, podSelectors, ipBlocks, nil
+	return rules, nsSelectors, podSelectors, namespacedPodSelectors, ipBlocks, nil
 }
 
 func addIfNotExist(s *selectorSpec, ss map[string]*selectorSpec) {
@@ -195,3 +227,12 @@ func port(p *intstr.IntOrString) string {
 
 	return port
 }
+
+func checkForNamedPorts(ports []networkingv1.NetworkPolicyPort) error {
+	for _, npProtocolPort := range ports {
+		if npProtocolPort.Port != nil && npProtocolPort.Port.Type == intstr.String {
+			return fmt.Errorf("named port %s in network policy", port(npProtocolPort.Port))
+		}
+	}
+	return nil
+}

npc/constants.go

@@ -2,16 +2,7 @@ package npc
 
 const (
 	TableFilter = "filter"
-
-	MainChain    = "WEAVE-NPC"
-	DefaultChain = "WEAVE-NPC-DEFAULT"
-	IngressChain = "WEAVE-NPC-INGRESS"
-
-	EgressChain        = "WEAVE-NPC-EGRESS"
-	EgressDefaultChain = "WEAVE-NPC-EGRESS-DEFAULT"
-	EgressCustomChain  = "WEAVE-NPC-EGRESS-CUSTOM"
-	EgressMarkChain    = "WEAVE-NPC-EGRESS-ACCEPT"
-	EgressMark         = "0x40000/0x40000"
+	EgressMark  = "0x40000/0x40000"
 
 	IpsetNamePrefix = "weave-"
 

npc/controller.go

@@ -1,30 +1,35 @@
 package npc
 
 import (
+	"context"
+	"fmt"
 	"sync"
 
 	"github.com/pkg/errors"
 	coreapi "k8s.io/api/core/v1"
 	extnapi "k8s.io/api/extensions/v1beta1"
 	networkingv1 "k8s.io/api/networking/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/ipset"
-	"github.com/weaveworks/weave/npc/iptables"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/common/chains"
+	"github.com/rajch/weave/net/ipset"
+	"github.com/rajch/weave/npc/iptables"
 )
 
 type NetworkPolicyController interface {
-	AddNamespace(ns *coreapi.Namespace) error
-	UpdateNamespace(oldObj, newObj *coreapi.Namespace) error
-	DeleteNamespace(ns *coreapi.Namespace) error
+	AddNamespace(ctx context.Context, ns *coreapi.Namespace) error
+	UpdateNamespace(ctx context.Context, oldObj, newObj *coreapi.Namespace) error
+	DeleteNamespace(ctx context.Context, ns *coreapi.Namespace) error
 
-	AddPod(obj *coreapi.Pod) error
-	UpdatePod(oldObj, newObj *coreapi.Pod) error
-	DeletePod(obj *coreapi.Pod) error
+	AddPod(ctx context.Context, obj *coreapi.Pod) error
+	UpdatePod(ctx context.Context, oldObj, newObj *coreapi.Pod) error
+	DeletePod(ctx context.Context, obj *coreapi.Pod) error
 
-	AddNetworkPolicy(obj interface{}) error
-	UpdateNetworkPolicy(oldObj, newObj interface{}) error
-	DeleteNetworkPolicy(obj interface{}) error
+	AddNetworkPolicy(ctx context.Context, obj interface{}) error
+	UpdateNetworkPolicy(ctx context.Context, oldObj, newObj interface{}) error
+	DeleteNetworkPolicy(ctx context.Context, obj interface{}) error
 }
 
 type controller struct {
@@ -32,31 +37,34 @@ type controller struct {
 
 	nodeName string // my node name
 
-	ipt iptables.Interface
-	ips ipset.Interface
-
-	nss         map[string]*ns // ns name -> ns struct
-	nsSelectors *selectorSet   // selector string -> nsSelector
+	ipt                    iptables.Interface
+	ips                    ipset.Interface
+	clientset              kubernetes.Interface
+	nss                    map[string]*ns // ns name -> ns struct
+	nsSelectors            *selectorSet   // selector string -> nsSelector
+	namespacedPodSelectors *selectorSet
+	defaultEgressDrop      bool // flag to track if base iptable rule to drop egress traffic is added or not
 }
 
-func New(nodeName string, ipt iptables.Interface, ips ipset.Interface) NetworkPolicyController {
+func New(nodeName string, ipt iptables.Interface, ips ipset.Interface, clientset kubernetes.Interface) NetworkPolicyController {
 	c := &controller{
-		nodeName: nodeName,
-		ipt:      ipt,
-		ips:      ips,
-		nss:      make(map[string]*ns)}
+		nodeName:  nodeName,
+		ipt:       ipt,
+		ips:       ips,
+		clientset: clientset,
+		nss:       make(map[string]*ns)}
 
 	doNothing := func(*selector, policyType) error { return nil }
 	c.nsSelectors = newSelectorSet(ips, c.onNewNsSelector, doNothing, doNothing)
-
+	c.namespacedPodSelectors = newSelectorSet(ips, c.onNewNamespacePodsSelector, doNothing, doNothing)
 	return c
 }
 
 func (npc *controller) onNewNsSelector(selector *selector) error {
 	for _, ns := range npc.nss {
-		if ns.namespace != nil {
-			if selector.matches(ns.namespace.ObjectMeta.Labels) {
-				if err := selector.addEntry(ns.namespace.ObjectMeta.UID, string(ns.allPods.ipsetName), namespaceComment(ns)); err != nil {
+		if ns.namespaceUID != "" {
+			if selector.matchesNamespaceSelector(ns.namespaceLabels) {
+				if err := selector.addEntry(ns.namespaceUID, string(ns.allPods.ipsetName), namespaceComment(ns)); err != nil {
 					return err
 				}
 			}
@@ -65,10 +73,32 @@ func (npc *controller) onNewNsSelector(selector *selector) error {
 	return nil
 }
 
-func (npc *controller) withNS(name string, f func(ns *ns) error) error {
+func (npc *controller) onNewNamespacePodsSelector(selector *selector) error {
+	for _, ns := range npc.nss {
+		if ns.namespaceUID != "" && len(ns.pods) > 0 {
+			for _, pod := range ns.pods {
+				if hasIP(pod) {
+					if selector.matchesNamespacedPodSelector(pod.ObjectMeta.Labels, ns.namespaceLabels) {
+						if err := selector.addEntry(uid(pod), pod.Status.PodIP, podComment(pod)); err != nil {
+							return err
+						}
+
+					}
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (npc *controller) withNS(ctx context.Context, name string, f func(ns *ns) error) error {
 	ns, found := npc.nss[name]
 	if !found {
-		newNs, err := newNS(name, npc.nodeName, npc.ipt, npc.ips, npc.nsSelectors)
+		namespace, err := npc.clientset.CoreV1().Namespaces().Get(ctx, name, metav1.GetOptions{})
+		if err != nil {
+			return err
+		}
+		newNs, err := newNS(name, npc.nodeName, npc.ipt, npc.ips, npc.nsSelectors, npc.namespacedPodSelectors, namespace)
 		if err != nil {
 			return err
 		}
@@ -87,52 +117,70 @@ func (npc *controller) withNS(name string, f func(ns *ns) error) error {
 	return nil
 }
 
-func (npc *controller) AddPod(obj *coreapi.Pod) error {
+func (npc *controller) AddPod(ctx context.Context, obj *coreapi.Pod) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Debugf("EVENT AddPod %s", js(obj))
-	return npc.withNS(obj.ObjectMeta.Namespace, func(ns *ns) error {
+	return npc.withNS(ctx, obj.ObjectMeta.Namespace, func(ns *ns) error {
 		return errors.Wrap(ns.addPod(obj), "add pod")
 	})
 }
 
-func (npc *controller) UpdatePod(oldObj, newObj *coreapi.Pod) error {
+func (npc *controller) UpdatePod(ctx context.Context, oldObj, newObj *coreapi.Pod) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Debugf("EVENT UpdatePod %s %s", js(oldObj), js(newObj))
-	return npc.withNS(oldObj.ObjectMeta.Namespace, func(ns *ns) error {
+	return npc.withNS(ctx, oldObj.ObjectMeta.Namespace, func(ns *ns) error {
 		return errors.Wrap(ns.updatePod(oldObj, newObj), "update pod")
 	})
 }
 
-func (npc *controller) DeletePod(obj *coreapi.Pod) error {
+func (npc *controller) DeletePod(ctx context.Context, obj *coreapi.Pod) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Debugf("EVENT DeletePod %s", js(obj))
-	return npc.withNS(obj.ObjectMeta.Namespace, func(ns *ns) error {
+	return npc.withNS(ctx, obj.ObjectMeta.Namespace, func(ns *ns) error {
 		return errors.Wrap(ns.deletePod(obj), "delete pod")
 	})
 }
 
-func (npc *controller) AddNetworkPolicy(obj interface{}) error {
+func (npc *controller) AddNetworkPolicy(ctx context.Context, obj interface{}) error {
 	npc.Lock()
 	defer npc.Unlock()
 
+	// lazily add default rule to drop egress traffic only when network policies are applied
+	if !npc.defaultEgressDrop {
+		egressNetworkPolicy, err := isEgressNetworkPolicy(obj)
+		if err != nil {
+			return err
+		}
+		if egressNetworkPolicy {
+			if err := npc.ipt.Append(TableFilter, chains.EgressChain,
+				"-m", "state", "--state", "NEW", "-m", "mark", "!", "--mark", EgressMark, "-j", "NFLOG", "--nflog-group", "86"); err != nil {
+				return fmt.Errorf("Failed to add iptable egress log rule: %w", err)
+			}
+			if err := npc.ipt.Append(TableFilter, chains.EgressChain,
+				"-m", "mark", "!", "--mark", EgressMark, "-j", "DROP"); err != nil {
+				return fmt.Errorf("Failed to add iptable rule to drop egress traffic from the pods by default due to %s", err.Error())
+			}
+			npc.defaultEgressDrop = true
+		}
+	}
+
 	nsName, err := nsName(obj)
 	if err != nil {
 		return err
 	}
-
 	common.Log.Infof("EVENT AddNetworkPolicy %s", js(obj))
-	return npc.withNS(nsName, func(ns *ns) error {
+	return npc.withNS(ctx, nsName, func(ns *ns) error {
 		return errors.Wrap(ns.addNetworkPolicy(obj), "add network policy")
 	})
 }
 
-func (npc *controller) UpdateNetworkPolicy(oldObj, newObj interface{}) error {
+func (npc *controller) UpdateNetworkPolicy(ctx context.Context, oldObj, newObj interface{}) error {
 	npc.Lock()
 	defer npc.Unlock()
 
@@ -142,12 +190,12 @@ func (npc *controller) UpdateNetworkPolicy(oldObj, newObj interface{}) error {
 	}
 
 	common.Log.Infof("EVENT UpdateNetworkPolicy %s %s", js(oldObj), js(newObj))
-	return npc.withNS(nsName, func(ns *ns) error {
+	return npc.withNS(ctx, nsName, func(ns *ns) error {
 		return errors.Wrap(ns.updateNetworkPolicy(oldObj, newObj), "update network policy")
 	})
 }
 
-func (npc *controller) DeleteNetworkPolicy(obj interface{}) error {
+func (npc *controller) DeleteNetworkPolicy(ctx context.Context, obj interface{}) error {
 	npc.Lock()
 	defer npc.Unlock()
 
@@ -157,37 +205,37 @@ func (npc *controller) DeleteNetworkPolicy(obj interface{}) error {
 	}
 
 	common.Log.Infof("EVENT DeleteNetworkPolicy %s", js(obj))
-	return npc.withNS(nsName, func(ns *ns) error {
+	return npc.withNS(ctx, nsName, func(ns *ns) error {
 		return errors.Wrap(ns.deleteNetworkPolicy(obj), "delete network policy")
 	})
 }
 
-func (npc *controller) AddNamespace(obj *coreapi.Namespace) error {
+func (npc *controller) AddNamespace(ctx context.Context, obj *coreapi.Namespace) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Infof("EVENT AddNamespace %s", js(obj))
-	return npc.withNS(obj.ObjectMeta.Name, func(ns *ns) error {
+	return npc.withNS(ctx, obj.ObjectMeta.Name, func(ns *ns) error {
 		return errors.Wrap(ns.addNamespace(obj), "add namespace")
 	})
 }
 
-func (npc *controller) UpdateNamespace(oldObj, newObj *coreapi.Namespace) error {
+func (npc *controller) UpdateNamespace(ctx context.Context, oldObj, newObj *coreapi.Namespace) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Infof("EVENT UpdateNamespace %s %s", js(oldObj), js(newObj))
-	return npc.withNS(oldObj.ObjectMeta.Name, func(ns *ns) error {
+	return npc.withNS(ctx, oldObj.ObjectMeta.Name, func(ns *ns) error {
 		return errors.Wrap(ns.updateNamespace(oldObj, newObj), "update namespace")
 	})
 }
 
-func (npc *controller) DeleteNamespace(obj *coreapi.Namespace) error {
+func (npc *controller) DeleteNamespace(ctx context.Context, obj *coreapi.Namespace) error {
 	npc.Lock()
 	defer npc.Unlock()
 
 	common.Log.Infof("EVENT DeleteNamespace %s", js(obj))
-	return npc.withNS(obj.ObjectMeta.Name, func(ns *ns) error {
+	return npc.withNS(ctx, obj.ObjectMeta.Name, func(ns *ns) error {
 		return errors.Wrap(ns.deleteNamespace(obj), "delete namespace")
 	})
 }
@@ -202,3 +250,28 @@ func nsName(obj interface{}) (string, error) {
 
 	return "", errInvalidNetworkPolicyObjType
 }
+
+func isEgressNetworkPolicy(obj interface{}) (bool, error) {
+	if policy, ok := obj.(*networkingv1.NetworkPolicy); ok {
+		if len(policy.Spec.PolicyTypes) > 0 {
+			for _, policyType := range policy.Spec.PolicyTypes {
+				if policyType == networkingv1.PolicyTypeEgress {
+					return true, nil
+				}
+			}
+		}
+		if policy.Spec.Egress != nil {
+			return true, nil
+		}
+		return false, nil
+	}
+	return false, errInvalidNetworkPolicyObjType
+}
+
+func uid(pod *coreapi.Pod) ipset.UID {
+	return ipset.UID(pod.UID)
+}
+
+func nsuid(ns *coreapi.Namespace) ipset.UID {
+	return ipset.UID(ns.UID)
+}

npc/controller_test.go

@@ -1,25 +1,27 @@
 package npc
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"strings"
 	"testing"
 
 	"github.com/pkg/errors"
+	"github.com/rajch/weave/common/chains"
+	"github.com/rajch/weave/net/ipset"
 	"github.com/stretchr/testify/require"
-	"github.com/weaveworks/weave/net/ipset"
 	coreapi "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/intstr"
+	"k8s.io/client-go/kubernetes/fake"
 )
 
 type mockSet struct {
 	name    ipset.Name
 	setType ipset.Type
-	subSets map[string]map[types.UID]bool
+	subSets map[string]map[ipset.UID]bool
 }
 
 type mockIPSet struct {
@@ -34,17 +36,17 @@ func (i *mockIPSet) Create(ipsetName ipset.Name, ipsetType ipset.Type) error {
 	if _, ok := i.sets[string(ipsetName)]; ok {
 		return errors.Errorf("ipset %s already exists", ipsetName)
 	}
-	i.sets[string(ipsetName)] = mockSet{name: ipsetName, setType: ipsetType, subSets: make(map[string]map[types.UID]bool)}
+	i.sets[string(ipsetName)] = mockSet{name: ipsetName, setType: ipsetType, subSets: make(map[string]map[ipset.UID]bool)}
 	return nil
 }
 
-func (i *mockIPSet) AddEntry(user types.UID, ipsetName ipset.Name, entry string, comment string) error {
+func (i *mockIPSet) AddEntry(user ipset.UID, ipsetName ipset.Name, entry string, comment string) error {
 	log.Printf("adding entry %s to %s for %s", entry, ipsetName, user)
 	if _, ok := i.sets[string(ipsetName)]; !ok {
 		return errors.Errorf("%s does not exist", entry)
 	}
 	if i.sets[string(ipsetName)].subSets[entry] == nil {
-		i.sets[string(ipsetName)].subSets[entry] = make(map[types.UID]bool)
+		i.sets[string(ipsetName)].subSets[entry] = make(map[ipset.UID]bool)
 	}
 	if _, ok := i.sets[string(ipsetName)].subSets[entry][user]; ok {
 		return errors.Errorf("user %s already owns entry %s", user, entry)
@@ -54,7 +56,7 @@ func (i *mockIPSet) AddEntry(user types.UID, ipsetName ipset.Name, entry string,
 	return nil
 }
 
-func (i *mockIPSet) DelEntry(user types.UID, ipsetName ipset.Name, entry string) error {
+func (i *mockIPSet) DelEntry(user ipset.UID, ipsetName ipset.Name, entry string) error {
 	log.Printf("deleting entry %s from %s for %s", entry, ipsetName, user)
 	if _, ok := i.sets[string(ipsetName)]; !ok {
 		return errors.Errorf("ipset %s does not exist", ipsetName)
@@ -71,12 +73,17 @@ func (i *mockIPSet) DelEntry(user types.UID, ipsetName ipset.Name, entry string)
 	return nil
 }
 
-func (i *mockIPSet) Exist(user types.UID, ipsetName ipset.Name, entry string) bool {
+func (i *mockIPSet) EntryExists(user ipset.UID, ipsetName ipset.Name, entry string) bool {
 	_, ok := i.sets[string(ipsetName)].subSets[entry][user]
 	return ok
 }
 
-func (i *mockIPSet) entryExists(ipsetName ipset.Name, entry string) bool {
+func (i *mockIPSet) Exists(ipsetName ipset.Name) (bool, error) {
+	_, ok := i.sets[string(ipsetName)]
+	return ok, nil
+}
+
+func (i *mockIPSet) entriesExist(ipsetName ipset.Name, entry string) bool {
 	return len(i.sets[string(ipsetName)].subSets[entry]) > 0
 }
 
@@ -149,11 +156,12 @@ func (ipt *mockIPTables) Insert(table, chain string, pos int, rulespec ...string
 
 func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
 	// Test for race condition between namespace and networkpolicy events
-	// https://github.com/weaveworks/weave/issues/3059
+	// https://github.com/rajch/weave/issues/3059
 
 	sourceNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "source",
+			UID:  "source",
 			Labels: map[string]string{
 				"app": "source",
 			},
@@ -163,6 +171,7 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
 	destinationNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "destination",
+			UID:  "destination",
 		},
 	}
 
@@ -198,28 +207,32 @@ func TestRegressionPolicyNamespaceOrdering3059(t *testing.T) {
 
 	// Namespaces first
 	m := newMockIPSet()
-	controller := New("foo", newMockIPTables(), &m)
+	client := fake.NewSimpleClientset()
+	ctx := context.Background()
+	controller := New("foo", newMockIPTables(), &m, client)
+	client.CoreV1().Namespaces().Create(ctx, sourceNamespace, metav1.CreateOptions{})
+	client.CoreV1().Namespaces().Create(ctx, destinationNamespace, metav1.CreateOptions{})
 
 	const (
 		selectorIPSetName = "weave-I239Zp%sCvoVt*D6u=A!2]YEk"
 		sourceIPSetName   = "weave-HboJG1fGgG]/SR%k9H#hv5e96"
 	)
 
-	controller.AddNamespace(sourceNamespace)
-	controller.AddNamespace(destinationNamespace)
+	controller.AddNamespace(ctx, sourceNamespace)
+	controller.AddNamespace(ctx, destinationNamespace)
 
-	controller.AddNetworkPolicy(networkPolicy)
+	controller.AddNetworkPolicy(ctx, networkPolicy)
 
 	require.Equal(t, true, len(m.sets[selectorIPSetName].subSets[sourceIPSetName]) > 0)
 
 	// NetworkPolicy first
 	m = newMockIPSet()
-	controller = New("foo", newMockIPTables(), &m)
+	controller = New("foo", newMockIPTables(), &m, &fake.Clientset{})
 
-	controller.AddNetworkPolicy(networkPolicy)
+	controller.AddNetworkPolicy(ctx, networkPolicy)
 
-	controller.AddNamespace(sourceNamespace)
-	controller.AddNamespace(destinationNamespace)
+	controller.AddNamespace(ctx, sourceNamespace)
+	controller.AddNamespace(ctx, destinationNamespace)
 
 	require.Equal(t, true, len(m.sets[selectorIPSetName].subSets[sourceIPSetName]) > 0)
 }
@@ -235,14 +248,16 @@ func TestDefaultAllow(t *testing.T) {
 	)
 
 	m := newMockIPSet()
-	controller := New("bar", newMockIPTables(), &m)
+	controller := New("bar", newMockIPTables(), &m, &fake.Clientset{})
 
+	ctx := context.Background()
 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "default",
+			UID:  "default",
 		},
 	}
-	controller.AddNamespace(defaultNamespace)
+	controller.AddNamespace(ctx, defaultNamespace)
 
 	// Should create an ipset for default-allow
 	require.Contains(t, m.sets, ingressDefaultAllowIPSetName)
@@ -255,11 +270,11 @@ func TestDefaultAllow(t *testing.T) {
 			Name:      "foo",
 			Labels:    map[string]string{"run": "foo"}},
 		Status: coreapi.PodStatus{PodIP: fooPodIP}}
-	controller.AddPod(podFoo)
+	controller.AddPod(ctx, podFoo)
 
 	// Should add the foo pod to default-allow
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
 
 	podBar := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -269,13 +284,13 @@ func TestDefaultAllow(t *testing.T) {
 			Labels:    map[string]string{"run": "bar"}},
 		Status: coreapi.PodStatus{PodIP: barPodIP}}
 	podBarNoIP := &coreapi.Pod{ObjectMeta: podBar.ObjectMeta}
-	controller.AddPod(podBarNoIP)
+	controller.AddPod(ctx, podBarNoIP)
 
-	controller.UpdatePod(podBarNoIP, podBar)
+	controller.UpdatePod(ctx, podBarNoIP, podBar)
 
 	// Should add the bar pod to default-allow
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, barPodIP))
 
 	// Allow access from the bar pod to the foo pod
 	netpol := &networkingv1.NetworkPolicy{
@@ -303,53 +318,53 @@ func TestDefaultAllow(t *testing.T) {
 			}},
 		},
 	}
-	controller.AddNetworkPolicy(netpol)
+	controller.AddNetworkPolicy(ctx, netpol)
 
 	// Should remove the foo pod from default-allow as the netpol selects it
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, barPodIP))
 
 	podBarWithNewIP := *podBar
 	podBarWithNewIP.Status.PodIP = barPodNewIP
-	controller.UpdatePod(podBar, &podBarWithNewIP)
+	controller.UpdatePod(ctx, podBar, &podBarWithNewIP)
 
 	// Should update IP addr of the bar pod in default-allow
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, barPodIP))
-	require.False(t, m.entryExists(egressDefaultAllowIPSetName, barPodIP))
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, barPodNewIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, barPodIP))
+	require.False(t, m.entriesExist(egressDefaultAllowIPSetName, barPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, barPodNewIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, barPodNewIP))
 
-	controller.UpdatePod(&podBarWithNewIP, podBarNoIP)
+	controller.UpdatePod(ctx, &podBarWithNewIP, podBarNoIP)
 	// Should remove the bar pod from default-allow as it does not have any IP addr
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, barPodNewIP))
-	require.False(t, m.entryExists(egressDefaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, barPodNewIP))
+	require.False(t, m.entriesExist(egressDefaultAllowIPSetName, barPodNewIP))
 
 	podFooWithNewLabel := *podFoo
 	podFooWithNewLabel.ObjectMeta.Labels = map[string]string{"run": "new-foo"}
-	controller.UpdatePod(podFoo, &podFooWithNewLabel)
+	controller.UpdatePod(ctx, podFoo, &podFooWithNewLabel)
 
 	// Should bring back the foo pod to default-allow as it does not match dst of any netpol
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
 
-	controller.UpdatePod(&podFooWithNewLabel, podFoo)
+	controller.UpdatePod(ctx, &podFooWithNewLabel, podFoo)
 	// Should remove from default-allow as it matches the netpol after the update
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
 
-	controller.DeleteNetworkPolicy(netpol)
+	controller.DeleteNetworkPolicy(ctx, netpol)
 	// Should bring back the foo pod to default-allow as no netpol selects it
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.True(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.True(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
 
-	controller.DeletePod(podFoo)
+	controller.DeletePod(ctx, podFoo)
 	// Should remove foo pod from default-allow
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, fooPodIP))
-	require.False(t, m.entryExists(egressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, fooPodIP))
+	require.False(t, m.entriesExist(egressDefaultAllowIPSetName, fooPodIP))
 
-	controller.DeleteNamespace(defaultNamespace)
+	controller.DeleteNamespace(ctx, defaultNamespace)
 	// Should remove default ipset
 	require.NotContains(t, m.sets, ingressDefaultAllowIPSetName)
 	require.NotContains(t, m.sets, egressDefaultAllowIPSetName)
@@ -363,14 +378,18 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 	)
 
 	m := newMockIPSet()
-	controller := New("qux", newMockIPTables(), &m)
+	client := fake.NewSimpleClientset()
+	controller := New("qux", newMockIPTables(), &m, client)
+	ctx := context.Background()
 
 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "default",
+			UID:  "default",
 		},
 	}
-	controller.AddNamespace(defaultNamespace)
+	client.CoreV1().Namespaces().Create(ctx, defaultNamespace, metav1.CreateOptions{})
+	controller.AddNamespace(ctx, defaultNamespace)
 
 	podFoo := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -379,10 +398,10 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 			Name:      "foo",
 			Labels:    map[string]string{"run": "foo"}},
 		Status: coreapi.PodStatus{PodIP: podIP}}
-	controller.AddPod(podFoo)
+	controller.AddPod(ctx, podFoo)
 
 	// Should be in default-allow as no netpol selects podFoo
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 
 	netpol := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -401,10 +420,10 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 			}},
 		},
 	}
-	controller.AddNetworkPolicy(netpol)
+	controller.AddNetworkPolicy(ctx, netpol)
 
 	// Shouldn't be in default-allow as netpol above selects podFoo
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 
 	podBar := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -413,31 +432,31 @@ func TestOutOfOrderPodEvents(t *testing.T) {
 			Name:      "bar",
 			Labels:    map[string]string{"run": "bar"}},
 		Status: coreapi.PodStatus{PodIP: podIP}}
-	controller.AddPod(podBar)
+	controller.AddPod(ctx, podBar)
 
 	// Should be in default-allow as no netpol selects podBar
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
-	require.True(t, m.Exist(podBar.ObjectMeta.UID, ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.EntryExists(uid(podBar), ingressDefaultAllowIPSetName, podIP))
 	// Should be in run=bar ipset
-	require.True(t, m.entryExists(runBarIPSetName, podIP))
+	require.True(t, m.entriesExist(runBarIPSetName, podIP))
 
-	controller.DeletePod(podFoo)
+	controller.DeletePod(ctx, podFoo)
 	// Multiple duplicate events should not affect npc state
-	controller.DeletePod(podFoo)
-	controller.DeletePod(podFoo)
+	controller.DeletePod(ctx, podFoo)
+	controller.DeletePod(ctx, podFoo)
 
 	// Should be in default-allow as no netpol selects podBar and podFoo removal
 	// should not affect podBar in default-allow
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 
-	controller.DeletePod(podBar)
+	controller.DeletePod(ctx, podBar)
 
 	// Should remove from default-allow and run=bar ipsets
 	require.Equal(t, 0, len(m.sets[ingressDefaultAllowIPSetName].subSets))
-	require.False(t, m.entryExists(runBarIPSetName, podIP))
+	require.False(t, m.entriesExist(runBarIPSetName, podIP))
 }
 
-// Test case for https://github.com/weaveworks/weave/issues/3222
+// Test case for https://github.com/rajch/weave/issues/3222
 func TestNewTargetSelector(t *testing.T) {
 	const (
 		ingressDefaultAllowIPSetName = "weave-;rGqyMIl1HN^cfDki~Z$3]6!N"
@@ -445,14 +464,18 @@ func TestNewTargetSelector(t *testing.T) {
 	)
 
 	m := newMockIPSet()
-	controller := New("baz", newMockIPTables(), &m)
+	client := fake.NewSimpleClientset()
+	controller := New("baz", newMockIPTables(), &m, client)
+	ctx := context.Background()
 
 	defaultNamespace := &coreapi.Namespace{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "default",
+			UID:  "default",
 		},
 	}
-	controller.AddNamespace(defaultNamespace)
+	client.CoreV1().Namespaces().Create(ctx, defaultNamespace, metav1.CreateOptions{})
+	controller.AddNamespace(ctx, defaultNamespace)
 
 	podFoo := &coreapi.Pod{
 		ObjectMeta: metav1.ObjectMeta{
@@ -461,9 +484,9 @@ func TestNewTargetSelector(t *testing.T) {
 			Name:      "foo",
 			Labels:    map[string]string{"run": "foo"}},
 		Status: coreapi.PodStatus{PodIP: podIP}}
-	controller.AddPod(podFoo)
+	controller.AddPod(ctx, podFoo)
 
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 
 	netpolBar := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -481,10 +504,10 @@ func TestNewTargetSelector(t *testing.T) {
 			}},
 		},
 	}
-	controller.AddNetworkPolicy(netpolBar)
+	controller.AddNetworkPolicy(ctx, netpolBar)
 
 	// netpolBar target selector selects podFoo
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 
 	netpolFoo := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -502,14 +525,14 @@ func TestNewTargetSelector(t *testing.T) {
 			}},
 		},
 	}
-	controller.AddNetworkPolicy(netpolFoo)
+	controller.AddNetworkPolicy(ctx, netpolFoo)
 
-	controller.DeleteNetworkPolicy(netpolBar)
+	controller.DeleteNetworkPolicy(ctx, netpolBar)
 	// netpolFoo target-selects podFoo
-	require.False(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
-	controller.DeleteNetworkPolicy(netpolFoo)
+	require.False(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
+	controller.DeleteNetworkPolicy(ctx, netpolFoo)
 	// No netpol target-selects podFoo
-	require.True(t, m.entryExists(ingressDefaultAllowIPSetName, podIP))
+	require.True(t, m.entriesExist(ingressDefaultAllowIPSetName, podIP))
 }
 
 func TestEgressPolicyWithIPBlock(t *testing.T) {
@@ -521,7 +544,24 @@ func TestEgressPolicyWithIPBlock(t *testing.T) {
 
 	m := newMockIPSet()
 	ipt := newMockIPTables()
-	controller := New("foo", ipt, &m)
+	client := fake.NewSimpleClientset()
+	controller := New("foo", ipt, &m, client)
+	ctx := context.Background()
+
+	defaultNamespace := &coreapi.Namespace{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "default",
+			UID:  "default",
+		},
+	}
+	nonDefaultNamespace := &coreapi.Namespace{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "non-default",
+			UID:  "non-default",
+		},
+	}
+	client.CoreV1().Namespaces().Create(ctx, defaultNamespace, metav1.CreateOptions{})
+	client.CoreV1().Namespaces().Create(ctx, nonDefaultNamespace, metav1.CreateOptions{})
 
 	netpolFoo := &networkingv1.NetworkPolicy{
 		ObjectMeta: metav1.ObjectMeta{
@@ -547,16 +587,16 @@ func TestEgressPolicyWithIPBlock(t *testing.T) {
 			}},
 		},
 	}
-	err := controller.AddNetworkPolicy(netpolFoo)
+	err := controller.AddNetworkPolicy(ctx, netpolFoo)
 	require.NoError(t, err)
 
 	require.Equal(t, 2, len(m.sets[exceptIPSetName].subSets))
-	require.True(t, m.entryExists(exceptIPSetName, "192.168.48.1/32"))
-	require.True(t, m.entryExists(exceptIPSetName, "192.168.48.2/32"))
+	require.True(t, m.entriesExist(exceptIPSetName, "192.168.48.1/32"))
+	require.True(t, m.entriesExist(exceptIPSetName, "192.168.48.2/32"))
 
 	// Each egress rule is represented as two iptables rules (-J MARK and -J RETURN).
-	require.Equal(t, 2, len(ipt.rules[EgressCustomChain]))
-	for rule := range ipt.rules[EgressCustomChain] {
+	require.Equal(t, 2, len(ipt.rules[chains.EgressCustomChain]))
+	for rule := range ipt.rules[chains.EgressCustomChain] {
 		require.Contains(t, rule, "-d 192.168.48.0/24 -m set ! --match-set "+exceptIPSetName+" dst")
 	}
 
@@ -588,7 +628,85 @@ func TestEgressPolicyWithIPBlock(t *testing.T) {
 			}},
 		},
 	}
-	err = controller.AddNetworkPolicy(netpolBar)
+	err = controller.AddNetworkPolicy(ctx, netpolBar)
 	require.NoError(t, err)
 	require.Equal(t, 2, len(m.sets[exceptIPSetNameInNonDefault].subSets))
 }
+
+// Test case for https://github.com/rajch/weave/issues/3653
+func TestIngressPolicyWithIPBlockAndPortSpecified(t *testing.T) {
+	const (
+		barPodIP        = "10.32.0.11"
+		runBarIPSetName = "weave-bZ~x=yBgzH)Ht()K*Uv3z{M]Y"
+	)
+
+	m := newMockIPSet()
+	ipt := newMockIPTables()
+	client := fake.NewSimpleClientset()
+	controller := New("any", ipt, &m, client)
+	ctx := context.Background()
+
+	defaultNamespace := &coreapi.Namespace{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "default",
+			UID:  "default",
+		},
+	}
+
+	client.CoreV1().Namespaces().Create(ctx, defaultNamespace, metav1.CreateOptions{})
+
+	podBar := &coreapi.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			UID:       "bar",
+			Namespace: "default",
+			Name:      "bar",
+			Labels:    map[string]string{"run": "bar"}},
+		Status: coreapi.PodStatus{PodIP: barPodIP}}
+	controller.AddPod(ctx, podBar)
+	defer controller.DeletePod(ctx, podBar)
+
+	portProtocol := coreapi.ProtocolTCP
+	port := intstr.FromInt(80)
+	netpolicty := &networkingv1.NetworkPolicy{
+		ObjectMeta: metav1.ObjectMeta{
+			UID:       "ipblock-bar",
+			Name:      "allow-ipblock-to-bar",
+			Namespace: "default",
+		},
+		Spec: networkingv1.NetworkPolicySpec{
+			PolicyTypes: []networkingv1.PolicyType{
+				networkingv1.PolicyTypeIngress,
+			},
+			PodSelector: metav1.LabelSelector{MatchLabels: podBar.Labels},
+			Ingress: []networkingv1.NetworkPolicyIngressRule{
+				{
+					Ports: []networkingv1.NetworkPolicyPort{
+						{
+							Protocol: &portProtocol,
+							Port:     &port,
+						},
+					},
+					From: []networkingv1.NetworkPolicyPeer{
+						{
+							IPBlock: &networkingv1.IPBlock{
+								CIDR: "192.168.48.4/32",
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	err := controller.AddNetworkPolicy(ctx, netpolicty)
+	require.NoError(t, err)
+	defer controller.DeleteNetworkPolicy(ctx, netpolicty)
+
+	require.Equal(t, 1, len(m.sets[runBarIPSetName].subSets))
+	require.True(t, m.entriesExist(runBarIPSetName, barPodIP))
+
+	require.Equal(t, 1, len(ipt.rules[chains.IngressChain]))
+	for rule := range ipt.rules[chains.IngressChain] {
+		require.Contains(t, rule, "-s 192.168.48.4/32 -m set --match-set "+runBarIPSetName+" dst --dport 80")
+	}
+}

npc/ipblock.go

@@ -6,10 +6,9 @@ import (
 	"strings"
 
 	networkingv1 "k8s.io/api/networking/v1"
-	"k8s.io/apimachinery/pkg/types"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/ipset"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/ipset"
 )
 
 type ipBlockSpec struct {
@@ -51,17 +50,17 @@ func (spec *ipBlockSpec) getRuleSpec(src bool) ([]string, string) {
 
 type ipBlockSet struct {
 	ips   ipset.Interface
-	users map[string]map[types.UID]struct{}
+	users map[string]map[ipset.UID]struct{}
 }
 
 func newIPBlockSet(ips ipset.Interface) *ipBlockSet {
 	return &ipBlockSet{
 		ips:   ips,
-		users: make(map[string]map[types.UID]struct{}),
+		users: make(map[string]map[ipset.UID]struct{}),
 	}
 }
 
-func (s *ipBlockSet) deprovision(user types.UID, current, desired map[string]*ipBlockSpec) error {
+func (s *ipBlockSet) deprovision(user ipset.UID, current, desired map[string]*ipBlockSpec) error {
 	for key, spec := range current {
 		if key == "" {
 			continue
@@ -83,7 +82,7 @@ func (s *ipBlockSet) deprovision(user types.UID, current, desired map[string]*ip
 	return nil
 }
 
-func (s *ipBlockSet) provision(user types.UID, current, desired map[string]*ipBlockSpec) (err error) {
+func (s *ipBlockSet) provision(user ipset.UID, current, desired map[string]*ipBlockSpec) (err error) {
 	for key, spec := range desired {
 		if key == "" {
 			// No need to provision an ipBlock with empty list of excepted CIDRs
@@ -106,7 +105,7 @@ func (s *ipBlockSet) provision(user types.UID, current, desired map[string]*ipBl
 					}
 				}
 
-				s.users[key] = make(map[types.UID]struct{})
+				s.users[key] = make(map[ipset.UID]struct{})
 			}
 			s.users[key][user] = struct{}{}
 		}

npc/metrics/metrics.go

@@ -11,7 +11,7 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 
-	"github.com/weaveworks/weave/common"
+	"github.com/rajch/weave/common"
 )
 
 var (
@@ -22,6 +22,12 @@ var (
 		},
 		[]string{"protocol", "dport"},
 	)
+	PolicyEnforcementErrors = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "weavenpc_policy_enforcement_errors",
+			Help: "Errors occured in enforcing the network policies.",
+		},
+	)
 )
 
 func gatherMetrics() {
@@ -95,6 +101,9 @@ func Start(addr string) error {
 	if err := prometheus.Register(blockedConnections); err != nil {
 		return err
 	}
+	if err := prometheus.Register(PolicyEnforcementErrors); err != nil {
+		return err
+	}
 
 	http.Handle("/metrics", promhttp.Handler())
 

npc/namespace.go

@@ -8,12 +8,12 @@ import (
 	extnapi "k8s.io/api/extensions/v1beta1"
 	networkingv1 "k8s.io/api/networking/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/uuid"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/ipset"
-	"github.com/weaveworks/weave/npc/iptables"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/common/chains"
+	"github.com/rajch/weave/net/ipset"
+	"github.com/rajch/weave/npc/iptables"
 )
 
 var errInvalidNetworkPolicyObjType = errors.New("invalid NetworkPolicy object type")
@@ -22,13 +22,14 @@ type ns struct {
 	ipt iptables.Interface // interface to iptables
 	ips ipset.Interface    // interface to ipset
 
-	name      string                     // k8s Namespace name
-	nodeName  string                     // my node name
-	namespace *coreapi.Namespace         // k8s Namespace object
-	pods      map[types.UID]*coreapi.Pod // k8s Pod objects by UID
-	policies  map[types.UID]interface{}  // k8s NetworkPolicy objects by UID
+	name            string                     // k8s Namespace name
+	nodeName        string                     // my node name
+	namespaceUID    ipset.UID                  // k8s Namespace UID
+	namespaceLabels map[string]string          // k8s Namespace labels
+	pods            map[ipset.UID]*coreapi.Pod // k8s Pod objects by UID
+	policies        map[ipset.UID]interface{}  // k8s NetworkPolicy objects by UID
 
-	uid     types.UID     // surrogate UID to own allPods selector
+	uid     ipset.UID     // surrogate UID to own allPods selector
 	allPods *selectorSpec // hash:ip ipset of all pod IPs in this namespace
 
 	// stores IP addrs of pods which are not selected by any target podSelector of
@@ -37,30 +38,34 @@ type ns struct {
 	ingressDefaultAllowIPSet ipset.Name
 	egressDefaultAllowIPSet  ipset.Name
 
-	nsSelectors  *selectorSet
-	podSelectors *selectorSet
-	ipBlocks     *ipBlockSet
-	rules        *ruleSet
+	nsSelectors             *selectorSet // reference to global selectorSet that is shared across the `ns`. Used to represent all pods in the matching namespaces
+	podSelectors            *selectorSet // used to represent the matching pods in namespace respresented by this `ns`
+	namespacedPodsSelectors *selectorSet // reference to global selectorSet that is shared across the `ns`. Used to represent matching pods in matching namespace
+	ipBlocks                *ipBlockSet
+	rules                   *ruleSet
 }
 
-func newNS(name, nodeName string, ipt iptables.Interface, ips ipset.Interface, nsSelectors *selectorSet) (*ns, error) {
-	allPods, err := newSelectorSpec(&metav1.LabelSelector{}, nil, name, ipset.HashIP)
+func newNS(name, nodeName string, ipt iptables.Interface, ips ipset.Interface, nsSelectors *selectorSet, namespacedPodsSelectors *selectorSet, namespaceObj *coreapi.Namespace) (*ns, error) {
+	allPods, err := newSelectorSpec(&metav1.LabelSelector{}, nil, nil, name, ipset.HashIP)
 	if err != nil {
 		return nil, err
 	}
 
 	ns := &ns{
-		ipt:         ipt,
-		ips:         ips,
-		name:        name,
-		nodeName:    nodeName,
-		pods:        make(map[types.UID]*coreapi.Pod),
-		policies:    make(map[types.UID]interface{}),
-		uid:         uuid.NewUUID(),
-		allPods:     allPods,
-		nsSelectors: nsSelectors,
-		ipBlocks:    newIPBlockSet(ips),
-		rules:       newRuleSet(ipt),
+		ipt:                     ipt,
+		ips:                     ips,
+		name:                    name,
+		namespaceUID:            nsuid(namespaceObj),
+		namespaceLabels:         namespaceObj.ObjectMeta.Labels,
+		nodeName:                nodeName,
+		pods:                    make(map[ipset.UID]*coreapi.Pod),
+		policies:                make(map[ipset.UID]interface{}),
+		uid:                     ipset.UID(uuid.NewUUID()),
+		allPods:                 allPods,
+		nsSelectors:             nsSelectors,
+		namespacedPodsSelectors: namespacedPodsSelectors,
+		ipBlocks:                newIPBlockSet(ips),
+		rules:                   newRuleSet(ipt),
 	}
 
 	ns.podSelectors = newSelectorSet(ips, ns.onNewPodSelector, ns.onNewTargetPodSelector, ns.onDestroyTargetPodSelector)
@@ -85,7 +90,7 @@ func newNS(name, nodeName string, ipt iptables.Interface, ips ipset.Interface, n
 }
 
 func (ns *ns) empty() bool {
-	return len(ns.pods) == 0 && len(ns.policies) == 0 && ns.namespace == nil
+	return len(ns.pods) == 0 && len(ns.policies) == 0 && ns.namespaceUID == ""
 }
 
 func (ns *ns) destroy() error {
@@ -95,8 +100,8 @@ func (ns *ns) destroy() error {
 func (ns *ns) onNewPodSelector(selector *selector) error {
 	for _, pod := range ns.pods {
 		if hasIP(pod) {
-			if selector.matches(pod.ObjectMeta.Labels) {
-				if err := selector.addEntry(pod.ObjectMeta.UID, pod.Status.PodIP, podComment(pod)); err != nil {
+			if selector.matchesPodSelector(pod.ObjectMeta.Labels) {
+				if err := selector.addEntry(uid(pod), pod.Status.PodIP, podComment(pod)); err != nil {
 					return err
 				}
 
@@ -111,8 +116,8 @@ func (ns *ns) onNewTargetPodSelector(selector *selector, policyType policyType)
 		if hasIP(pod) {
 			// Remove the pod from default-allow if dst podselector matches the pod
 			ipset := ns.defaultAllowIPSetName(policyType)
-			if selector.matches(pod.ObjectMeta.Labels) {
-				if err := ns.ips.DelEntry(pod.ObjectMeta.UID, ipset, pod.Status.PodIP); err != nil {
+			if selector.matchesPodSelector(pod.ObjectMeta.Labels) {
+				if err := ns.ips.DelEntry(uid(pod), ipset, pod.Status.PodIP); err != nil {
 					return err
 				}
 			}
@@ -125,7 +130,7 @@ func (ns *ns) onNewTargetPodSelector(selector *selector, policyType policyType)
 func (ns *ns) onDestroyTargetPodSelector(selector *selector, policyType policyType) error {
 	for _, pod := range ns.pods {
 		if hasIP(pod) {
-			if selector.matches(pod.ObjectMeta.Labels) {
+			if selector.matchesPodSelector(pod.ObjectMeta.Labels) {
 				if err := ns.addToDefaultAllowIfNoMatching(pod, policyType); err != nil {
 					return err
 				}
@@ -141,99 +146,93 @@ func (ns *ns) addToDefaultAllowIfNoMatching(pod *coreapi.Pod, policyType policyT
 	found := false
 	// TODO(mp) optimize (avoid iterating over selectors) by ref counting IP addrs.
 	for _, s := range ns.podSelectors.entries {
-		if ns.podSelectors.targetSelectorExist(s, policyType) && s.matches(pod.ObjectMeta.Labels) {
+		if ns.podSelectors.targetSelectorExist(s, policyType) && s.matchesPodSelector(pod.ObjectMeta.Labels) {
 			found = true
 			break
 		}
 	}
 	if !found {
 		ipset := ns.defaultAllowIPSetName(policyType)
-		if err := ns.ips.AddEntry(pod.ObjectMeta.UID, ipset, pod.Status.PodIP, podComment(pod)); err != nil {
+		if err := ns.ips.AddEntry(uid(pod), ipset, pod.Status.PodIP, podComment(pod)); err != nil {
 			return err
 		}
 	}
 	return nil
 }
 
-func (ns *ns) checkLocalPod(obj *coreapi.Pod) bool {
-	if obj.Spec.NodeName != ns.nodeName {
-		return false
-	}
-	return true
-}
-
 func (ns *ns) addPod(obj *coreapi.Pod) error {
-	ns.pods[obj.ObjectMeta.UID] = obj
+	ns.pods[uid(obj)] = obj
 
 	if !hasIP(obj) {
 		return nil
 	}
 
-	if ns.checkLocalPod(obj) {
-		ns.ips.AddEntry(obj.ObjectMeta.UID, LocalIpset, obj.Status.PodIP, podComment(obj))
-	}
-
-	foundIngress, foundEgress, err := ns.podSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, obj.Status.PodIP, podComment(obj))
+	foundIngress, foundEgress, err := ns.podSelectors.addToMatchingPodSelector(uid(obj), obj.ObjectMeta.Labels, obj.Status.PodIP, podComment(obj))
 	if err != nil {
 		return err
 	}
 	// If there are no matching target selectors, add the pod to default-allow
 	if !foundIngress {
-		if err := ns.ips.AddEntry(obj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
+		if err := ns.ips.AddEntry(uid(obj), ns.ingressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
 			return err
 		}
 	}
 	if !foundEgress {
-		if err := ns.ips.AddEntry(obj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
+		if err := ns.ips.AddEntry(uid(obj), ns.egressDefaultAllowIPSet, obj.Status.PodIP, podComment(obj)); err != nil {
 			return err
 		}
 	}
 
+	err = ns.namespacedPodsSelectors.addToMatchingNamespacedPodSelector(uid(obj), obj.ObjectMeta.Labels, ns.namespaceLabels, obj.Status.PodIP, podComment(obj))
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
 
 func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
-	delete(ns.pods, oldObj.ObjectMeta.UID)
-	ns.pods[newObj.ObjectMeta.UID] = newObj
+	delete(ns.pods, uid(oldObj))
+	ns.pods[uid(newObj)] = newObj
 
 	if !hasIP(oldObj) && !hasIP(newObj) {
 		return nil
 	}
 
 	if hasIP(oldObj) && !hasIP(newObj) {
-		if ns.checkLocalPod(oldObj) {
-			ns.ips.DelEntry(oldObj.ObjectMeta.UID, LocalIpset, oldObj.Status.PodIP)
-		}
-
-		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+		if err := ns.ips.DelEntry(uid(oldObj), ns.ingressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
 			return err
 		}
-		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+		if err := ns.ips.DelEntry(uid(oldObj), ns.egressDefaultAllowIPSet, oldObj.Status.PodIP); err != nil {
+			return err
+		}
+		if err := ns.namespacedPodsSelectors.delFromMatchingNamespacedPodSelector(uid(oldObj), oldObj.ObjectMeta.Labels, ns.namespaceLabels, oldObj.Status.PodIP); err != nil {
 			return err
 		}
 
-		return ns.podSelectors.delFromMatching(oldObj.ObjectMeta.UID, oldObj.ObjectMeta.Labels, oldObj.Status.PodIP)
+		return ns.podSelectors.delFromMatchingPodSelector(uid(oldObj), oldObj.ObjectMeta.Labels, oldObj.Status.PodIP)
 	}
 
 	if !hasIP(oldObj) && hasIP(newObj) {
-		if ns.checkLocalPod(newObj) {
-			ns.ips.AddEntry(newObj.ObjectMeta.UID, LocalIpset, newObj.Status.PodIP, podComment(newObj))
-		}
-		foundIngress, foundEgress, err := ns.podSelectors.addToMatching(newObj.ObjectMeta.UID, newObj.ObjectMeta.Labels, newObj.Status.PodIP, podComment(newObj))
+		foundIngress, foundEgress, err := ns.podSelectors.addToMatchingPodSelector(uid(newObj), newObj.ObjectMeta.Labels, newObj.Status.PodIP, podComment(newObj))
 		if err != nil {
 			return err
 		}
 
 		if !foundIngress {
-			if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
+			if err := ns.ips.AddEntry(uid(newObj), ns.ingressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
 				return err
 			}
 		}
 		if !foundEgress {
-			if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
+			if err := ns.ips.AddEntry(uid(newObj), ns.egressDefaultAllowIPSet, newObj.Status.PodIP, podComment(newObj)); err != nil {
 				return err
 			}
 		}
+		err = ns.namespacedPodsSelectors.addToMatchingNamespacedPodSelector(uid(newObj), newObj.ObjectMeta.Labels, ns.namespaceLabels, newObj.Status.PodIP, podComment(newObj))
+		if err != nil {
+			return err
+		}
 
 		return nil
 	}
@@ -251,18 +250,18 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 		oldObj.Status.PodIP != newObj.Status.PodIP {
 
 		for _, ps := range ns.podSelectors.entries {
-			oldMatch := ps.matches(oldObj.ObjectMeta.Labels)
-			newMatch := ps.matches(newObj.ObjectMeta.Labels)
+			oldMatch := ps.matchesPodSelector(oldObj.ObjectMeta.Labels)
+			newMatch := ps.matchesPodSelector(newObj.ObjectMeta.Labels)
 			if oldMatch == newMatch && oldObj.Status.PodIP == newObj.Status.PodIP {
 				continue
 			}
 			if oldMatch {
-				if err := ps.delEntry(oldObj.ObjectMeta.UID, oldObj.Status.PodIP); err != nil {
+				if err := ps.delEntry(uid(oldObj), oldObj.Status.PodIP); err != nil {
 					return err
 				}
 			}
 			if newMatch {
-				if err := ps.addEntry(newObj.ObjectMeta.UID, newObj.Status.PodIP, podComment(newObj)); err != nil {
+				if err := ps.addEntry(uid(newObj), newObj.Status.PodIP, podComment(newObj)); err != nil {
 					return err
 				}
 			}
@@ -274,6 +273,23 @@ func (ns *ns) updatePod(oldObj, newObj *coreapi.Pod) error {
 				return err
 			}
 		}
+		for _, ps := range ns.namespacedPodsSelectors.entries {
+			oldMatch := ps.matchesNamespacedPodSelector(oldObj.ObjectMeta.Labels, ns.namespaceLabels)
+			newMatch := ps.matchesNamespacedPodSelector(newObj.ObjectMeta.Labels, ns.namespaceLabels)
+			if oldMatch == newMatch && oldObj.Status.PodIP == newObj.Status.PodIP {
+				continue
+			}
+			if oldMatch {
+				if err := ps.delEntry(uid(oldObj), oldObj.Status.PodIP); err != nil {
+					return err
+				}
+			}
+			if newMatch {
+				if err := ps.addEntry(uid(newObj), newObj.Status.PodIP, podComment(newObj)); err != nil {
+					return err
+				}
+			}
+		}
 	}
 
 	return nil
@@ -284,7 +300,7 @@ func (ns *ns) addOrRemoveToDefaultAllowIPSet(ps *selector, oldObj, newObj *corea
 	if ns.podSelectors.targetSelectorExist(ps, policyType) {
 		switch {
 		case !oldMatch && newMatch:
-			if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ipset, oldObj.Status.PodIP); err != nil {
+			if err := ns.ips.DelEntry(uid(oldObj), ipset, oldObj.Status.PodIP); err != nil {
 				return err
 			}
 		case oldMatch && !newMatch:
@@ -297,30 +313,31 @@ func (ns *ns) addOrRemoveToDefaultAllowIPSet(ps *selector, oldObj, newObj *corea
 }
 
 func (ns *ns) deletePod(obj *coreapi.Pod) error {
-	delete(ns.pods, obj.ObjectMeta.UID)
+	delete(ns.pods, uid(obj))
 
 	if !hasIP(obj) {
 		return nil
 	}
 
-	if ns.checkLocalPod(obj) {
-		ns.ips.DelEntry(obj.ObjectMeta.UID, LocalIpset, obj.Status.PodIP)
-	}
-
-	if err := ns.ips.DelEntry(obj.ObjectMeta.UID, ns.ingressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
+	if err := ns.ips.DelEntry(uid(obj), ns.ingressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
 		return err
 	}
-	if err := ns.ips.DelEntry(obj.ObjectMeta.UID, ns.egressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
+	if err := ns.ips.DelEntry(uid(obj), ns.egressDefaultAllowIPSet, obj.Status.PodIP); err != nil {
 		return err
 	}
-
-	return ns.podSelectors.delFromMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, obj.Status.PodIP)
+	if err := ns.podSelectors.delFromMatchingPodSelector(uid(obj), obj.ObjectMeta.Labels, obj.Status.PodIP); err != nil {
+		return err
+	}
+	if err := ns.namespacedPodsSelectors.delFromMatchingNamespacedPodSelector(uid(obj), obj.ObjectMeta.Labels, ns.namespaceLabels, obj.Status.PodIP); err != nil {
+		return err
+	}
+	return nil
 }
 
 func (ns *ns) addNetworkPolicy(obj interface{}) error {
 	// Analyse policy, determine which rules and ipsets are required
 
-	uid, rules, nsSelectors, podSelectors, ipBlocks, err := ns.analyse(obj)
+	uid, rules, nsSelectors, podSelectors, namespacedPodsSelectors, ipBlocks, err := ns.analyse(obj)
 	if err != nil {
 		return err
 	}
@@ -332,6 +349,9 @@ func (ns *ns) addNetworkPolicy(obj interface{}) error {
 	if err := ns.podSelectors.provision(uid, nil, podSelectors); err != nil {
 		return err
 	}
+	if err := ns.namespacedPodsSelectors.provision(uid, nil, namespacedPodsSelectors); err != nil {
+		return err
+	}
 	if err := ns.ipBlocks.provision(uid, nil, ipBlocks); err != nil {
 		return err
 	}
@@ -340,11 +360,11 @@ func (ns *ns) addNetworkPolicy(obj interface{}) error {
 
 func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 	// Analyse the old and the new policy so we can determine differences
-	oldUID, oldRules, oldNsSelectors, oldPodSelectors, oldIPBlocks, err := ns.analyse(oldObj)
+	oldUID, oldRules, oldNsSelectors, oldPodSelectors, oldNamespacedPodsSelectors, oldIPBlocks, err := ns.analyse(oldObj)
 	if err != nil {
 		return err
 	}
-	newUID, newRules, newNsSelectors, newPodSelectors, newIPBlocks, err := ns.analyse(newObj)
+	newUID, newRules, newNsSelectors, newPodSelectors, newNamespacedPodsSelectors, newIPBlocks, err := ns.analyse(newObj)
 	if err != nil {
 		return err
 	}
@@ -362,6 +382,9 @@ func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 	if err := ns.podSelectors.deprovision(oldUID, oldPodSelectors, newPodSelectors); err != nil {
 		return err
 	}
+	if err := ns.namespacedPodsSelectors.deprovision(oldUID, oldNamespacedPodsSelectors, newNamespacedPodsSelectors); err != nil {
+		return err
+	}
 	if err := ns.ipBlocks.deprovision(oldUID, oldIPBlocks, newIPBlocks); err != nil {
 		return err
 	}
@@ -371,6 +394,9 @@ func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 	if err := ns.podSelectors.provision(oldUID, oldPodSelectors, newPodSelectors); err != nil {
 		return err
 	}
+	if err := ns.namespacedPodsSelectors.provision(oldUID, oldNamespacedPodsSelectors, newNamespacedPodsSelectors); err != nil {
+		return err
+	}
 	if err := ns.ipBlocks.provision(oldUID, oldIPBlocks, newIPBlocks); err != nil {
 		return err
 	}
@@ -379,7 +405,7 @@ func (ns *ns) updateNetworkPolicy(oldObj, newObj interface{}) error {
 
 func (ns *ns) deleteNetworkPolicy(obj interface{}) error {
 	// Analyse network policy to free resources
-	uid, rules, nsSelectors, podSelectors, ipBlocks, err := ns.analyse(obj)
+	uid, rules, nsSelectors, podSelectors, namespacedPodsSelectors, ipBlocks, err := ns.analyse(obj)
 	if err != nil {
 		return err
 	}
@@ -396,6 +422,9 @@ func (ns *ns) deleteNetworkPolicy(obj interface{}) error {
 	if err := ns.podSelectors.deprovision(uid, podSelectors, nil); err != nil {
 		return err
 	}
+	if err := ns.namespacedPodsSelectors.deprovision(uid, namespacedPodsSelectors, nil); err != nil {
+		return err
+	}
 	if err := ns.ipBlocks.deprovision(uid, ipBlocks, nil); err != nil {
 		return err
 	}
@@ -407,12 +436,12 @@ func (ns *ns) updateDefaultAllowIPSetEntry(oldObj, newObj *coreapi.Pod, ipsetNam
 	// Instead of iterating over all selectors we check whether old pod IP
 	// has been inserted into default-allow ipset to decide whether the IP
 	// in the ipset has to be updated.
-	if ns.ips.Exist(oldObj.ObjectMeta.UID, ipsetName, oldObj.Status.PodIP) {
+	if ns.ips.EntryExists(uid(oldObj), ipsetName, oldObj.Status.PodIP) {
 
-		if err := ns.ips.DelEntry(oldObj.ObjectMeta.UID, ipsetName, oldObj.Status.PodIP); err != nil {
+		if err := ns.ips.DelEntry(uid(oldObj), ipsetName, oldObj.Status.PodIP); err != nil {
 			return err
 		}
-		if err := ns.ips.AddEntry(newObj.ObjectMeta.UID, ipsetName, newObj.Status.PodIP, podComment(newObj)); err != nil {
+		if err := ns.ips.AddEntry(uid(newObj), ipsetName, newObj.Status.PodIP, podComment(newObj)); err != nil {
 			return err
 		}
 	}
@@ -421,12 +450,12 @@ func (ns *ns) updateDefaultAllowIPSetEntry(oldObj, newObj *coreapi.Pod, ipsetNam
 
 func bypassRules(namespace string, ingress, egress ipset.Name) map[string][][]string {
 	return map[string][][]string{
-		DefaultChain: {
+		chains.DefaultChain: {
 			{"-m", "set", "--match-set", string(ingress), "dst", "-j", "ACCEPT",
 				"-m", "comment", "--comment", "DefaultAllow ingress isolation for namespace: " + namespace},
 		},
-		EgressDefaultChain: {
-			{"-m", "set", "--match-set", string(egress), "src", "-j", EgressMarkChain,
+		chains.EgressDefaultChain: {
+			{"-m", "set", "--match-set", string(egress), "src", "-j", chains.EgressMarkChain,
 				"-m", "comment", "--comment", "DefaultAllow egress isolation for namespace: " + namespace},
 			{"-m", "set", "--match-set", string(egress), "src", "-j", "RETURN",
 				"-m", "comment", "--comment", "DefaultAllow egress isolation for namespace: " + namespace},
@@ -461,7 +490,8 @@ func (ns *ns) deleteBypassRules() error {
 }
 
 func (ns *ns) addNamespace(obj *coreapi.Namespace) error {
-	ns.namespace = obj
+	ns.namespaceUID = ipset.UID(obj.ObjectMeta.UID)
+	ns.namespaceLabels = obj.ObjectMeta.Labels
 
 	// Insert a rule to bypass policies
 	if err := ns.ensureBypassRules(); err != nil {
@@ -469,28 +499,28 @@ func (ns *ns) addNamespace(obj *coreapi.Namespace) error {
 	}
 
 	// Add namespace ipset to matching namespace selectors
-	_, _, err := ns.nsSelectors.addToMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, string(ns.allPods.ipsetName), namespaceComment(ns))
+	err := ns.nsSelectors.addToMatchingNamespaceSelector(nsuid(obj), obj.ObjectMeta.Labels, string(ns.allPods.ipsetName), namespaceComment(ns))
 	return err
 }
 
 func (ns *ns) updateNamespace(oldObj, newObj *coreapi.Namespace) error {
-	ns.namespace = newObj
-
 	// Re-evaluate namespace selector membership if labels have changed
 	if !equals(oldObj.ObjectMeta.Labels, newObj.ObjectMeta.Labels) {
+		ns.namespaceLabels = newObj.ObjectMeta.Labels
+
 		for _, selector := range ns.nsSelectors.entries {
-			oldMatch := selector.matches(oldObj.ObjectMeta.Labels)
-			newMatch := selector.matches(newObj.ObjectMeta.Labels)
+			oldMatch := selector.matchesNamespaceSelector(oldObj.ObjectMeta.Labels)
+			newMatch := selector.matchesNamespaceSelector(newObj.ObjectMeta.Labels)
 			if oldMatch == newMatch {
 				continue
 			}
 			if oldMatch {
-				if err := selector.delEntry(ns.namespace.ObjectMeta.UID, string(ns.allPods.ipsetName)); err != nil {
+				if err := selector.delEntry(ns.namespaceUID, string(ns.allPods.ipsetName)); err != nil {
 					return err
 				}
 			}
 			if newMatch {
-				if err := selector.addEntry(ns.namespace.ObjectMeta.UID, string(ns.allPods.ipsetName), namespaceComment(ns)); err != nil {
+				if err := selector.addEntry(ns.namespaceUID, string(ns.allPods.ipsetName), namespaceComment(ns)); err != nil {
 					return err
 				}
 			}
@@ -501,7 +531,7 @@ func (ns *ns) updateNamespace(oldObj, newObj *coreapi.Namespace) error {
 }
 
 func (ns *ns) deleteNamespace(obj *coreapi.Namespace) error {
-	ns.namespace = nil
+	ns.namespaceUID = ""
 
 	// Remove bypass rule
 	if err := ns.deleteBypassRules(); err != nil {
@@ -509,7 +539,7 @@ func (ns *ns) deleteNamespace(obj *coreapi.Namespace) error {
 	}
 
 	// Remove namespace ipset from any matching namespace selectors
-	err := ns.nsSelectors.delFromMatching(obj.ObjectMeta.UID, obj.ObjectMeta.Labels, string(ns.allPods.ipsetName))
+	err := ns.nsSelectors.delFromMatchingNamespaceSelector(nsuid(obj), obj.ObjectMeta.Labels, string(ns.allPods.ipsetName))
 	if err != nil {
 		return err
 	}
@@ -559,17 +589,17 @@ func (ns *ns) defaultAllowIPSetName(pt policyType) ipset.Name {
 }
 
 func (ns *ns) analyse(obj interface{}) (
-	uid types.UID,
+	uid ipset.UID,
 	rules map[string]*ruleSpec,
-	nsSelectors, podSelectors map[string]*selectorSpec,
+	nsSelectors, podSelectors, namespacedPodsSelectors map[string]*selectorSpec,
 	ipBlocks map[string]*ipBlockSpec,
 	err error) {
 
 	switch p := obj.(type) {
 	case *extnapi.NetworkPolicy:
-		uid = p.ObjectMeta.UID
+		uid = ipset.UID(p.ObjectMeta.UID)
 	case *networkingv1.NetworkPolicy:
-		uid = p.ObjectMeta.UID
+		uid = ipset.UID(p.ObjectMeta.UID)
 	default:
 		err = errInvalidNetworkPolicyObjType
 		return
@@ -577,7 +607,7 @@ func (ns *ns) analyse(obj interface{}) (
 	ns.policies[uid] = obj
 
 	// Analyse policy, determine which rules and ipsets are required
-	rules, nsSelectors, podSelectors, ipBlocks, err = ns.analysePolicy(obj.(*networkingv1.NetworkPolicy))
+	rules, nsSelectors, podSelectors, namespacedPodsSelectors, ipBlocks, err = ns.analysePolicy(obj.(*networkingv1.NetworkPolicy))
 	if err != nil {
 		return
 	}

npc/rule.go

@@ -5,10 +5,10 @@ import (
 	"reflect"
 	"strings"
 
-	"k8s.io/apimachinery/pkg/types"
-
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/npc/iptables"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/common/chains"
+	"github.com/rajch/weave/net/ipset"
+	"github.com/rajch/weave/npc/iptables"
 )
 
 type ruleHost interface {
@@ -55,9 +55,9 @@ func newRuleSpec(policyType policyType, proto *string, srcHost, dstHost ruleHost
 
 func (spec *ruleSpec) iptChain() string {
 	if spec.policyType == policyTypeEgress {
-		return EgressCustomChain
+		return chains.EgressCustomChain
 	}
-	return IngressChain
+	return chains.IngressChain
 }
 
 func (spec *ruleSpec) iptRuleSpecs() [][]string {
@@ -71,7 +71,7 @@ func (spec *ruleSpec) iptRuleSpecs() [][]string {
 	// policyTypeEgress
 	ruleMark := make([]string, len(spec.args))
 	copy(ruleMark, spec.args)
-	ruleMark = append(ruleMark, "-j", EgressMarkChain)
+	ruleMark = append(ruleMark, "-j", chains.EgressMarkChain)
 	ruleReturn := make([]string, len(spec.args))
 	copy(ruleReturn, spec.args)
 	ruleReturn = append(ruleReturn, "-j", "RETURN")
@@ -80,14 +80,14 @@ func (spec *ruleSpec) iptRuleSpecs() [][]string {
 
 type ruleSet struct {
 	ipt   iptables.Interface
-	users map[string]map[types.UID]struct{}
+	users map[string]map[ipset.UID]struct{}
 }
 
 func newRuleSet(ipt iptables.Interface) *ruleSet {
-	return &ruleSet{ipt, make(map[string]map[types.UID]struct{})}
+	return &ruleSet{ipt, make(map[string]map[ipset.UID]struct{})}
 }
 
-func (rs *ruleSet) deprovision(user types.UID, current, desired map[string]*ruleSpec) error {
+func (rs *ruleSet) deprovision(user ipset.UID, current, desired map[string]*ruleSpec) error {
 	for key, spec := range current {
 		if _, found := desired[key]; !found {
 			delete(rs.users[key], user)
@@ -108,7 +108,7 @@ func (rs *ruleSet) deprovision(user types.UID, current, desired map[string]*rule
 	return nil
 }
 
-func (rs *ruleSet) provision(user types.UID, current, desired map[string]*ruleSpec) error {
+func (rs *ruleSet) provision(user ipset.UID, current, desired map[string]*ruleSpec) error {
 	for key, spec := range desired {
 		if _, found := current[key]; !found {
 			if _, found := rs.users[key]; !found {
@@ -119,7 +119,7 @@ func (rs *ruleSet) provision(user types.UID, current, desired map[string]*ruleSp
 						return err
 					}
 				}
-				rs.users[key] = make(map[types.UID]struct{})
+				rs.users[key] = make(map[ipset.UID]struct{})
 			}
 			rs.users[key][user] = struct{}{}
 		}

npc/rule_test.go

@@ -1,13 +1,14 @@
 package npc
 
 import (
-	"github.com/stretchr/testify/require"
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 func TestRegressionHandleNil3095(t *testing.T) {
 	// Test for handling nil values
-	// https://github.com/weaveworks/weave/issues/3095
+	// https://github.com/rajch/weave/issues/3095
 
 	rs := newRuleSpec(policyTypeIngress, nil, nil, nil, nil)
 

npc/selector.go

@@ -5,32 +5,45 @@ import (
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
-	"k8s.io/apimachinery/pkg/types"
 
-	"github.com/weaveworks/weave/common"
-	"github.com/weaveworks/weave/net/ipset"
+	"github.com/rajch/weave/common"
+	"github.com/rajch/weave/net/ipset"
 )
 
 type selectorSpec struct {
-	key         string          // string representation (for hash keying/equality comparison)
-	selector    labels.Selector // k8s Selector object (for matching)
-	policyTypes []policyType    // If non-empty, then selectorSpec is a target selector for given policyTypes.
+	key               string          // string representation (for hash keying/equality comparison)
+	podSelector       labels.Selector // k8s Selector object (for matching pods)
+	namespaceSelector labels.Selector // k8s Selector object (for matching namespaces)
+	policyTypes       []policyType    // If non-empty, then selectorSpec is a target selector for given policyTypes.
 
 	ipsetType ipset.Type // type of ipset to provision
 	ipsetName ipset.Name // generated ipset name
 	nsName    string     // Namespace name
 }
 
-func newSelectorSpec(json *metav1.LabelSelector, policyType []policyType, nsName string, ipsetType ipset.Type) (*selectorSpec, error) {
-	selector, err := metav1.LabelSelectorAsSelector(json)
-	if err != nil {
-		return nil, err
+func newSelectorSpec(podJSON *metav1.LabelSelector, namespaceJSON *metav1.LabelSelector, policyType []policyType, nsName string, ipsetType ipset.Type) (*selectorSpec, error) {
+	var podSelector, namespaceSelector labels.Selector
+	var err error
+	var key string
+	if namespaceJSON != nil {
+		namespaceSelector, err = metav1.LabelSelectorAsSelector(namespaceJSON)
+		if err != nil {
+			return nil, err
+		}
+		key = namespaceSelector.String()
+	}
+	if podJSON != nil {
+		podSelector, err = metav1.LabelSelectorAsSelector(podJSON)
+		if err != nil {
+			return nil, err
+		}
+		key = key + podSelector.String()
 	}
-	key := selector.String()
 	return &selectorSpec{
-		key:         key,
-		selector:    selector,
-		policyTypes: policyType,
+		key:               key,
+		podSelector:       podSelector,
+		namespaceSelector: namespaceSelector,
+		policyTypes:       policyType,
 		// We prefix the selector string with the namespace name when generating
 		// the shortname because you can specify the same selector in multiple
 		// namespaces - we need those to map to distinct ipsets
@@ -46,7 +59,7 @@ func (spec *selectorSpec) getRuleSpec(src bool) ([]string, string) {
 	}
 	rule := []string{"-m", "set", "--match-set", string(spec.ipsetName), dir}
 
-	comment := "anywhere"
+	var comment string
 	if spec.nsName != "" {
 		comment = fmt.Sprintf("pods: namespace: %s, selector: %s", spec.nsName, spec.key)
 	} else {
@@ -61,15 +74,23 @@ type selector struct {
 	spec *selectorSpec
 }
 
-func (s *selector) matches(labelMap map[string]string) bool {
-	return s.spec.selector.Matches(labels.Set(labelMap))
+func (s *selector) matchesPodSelector(podsLabelMap map[string]string) bool {
+	return s.spec.podSelector.Matches(labels.Set(podsLabelMap))
 }
 
-func (s *selector) addEntry(user types.UID, entry string, comment string) error {
+func (s *selector) matchesNamespaceSelector(namespaceLabelMap map[string]string) bool {
+	return s.spec.namespaceSelector.Matches(labels.Set(namespaceLabelMap))
+}
+
+func (s *selector) matchesNamespacedPodSelector(podsLabelMap, namespaceLabelMap map[string]string) bool {
+	return s.spec.podSelector.Matches(labels.Set(podsLabelMap)) && s.spec.namespaceSelector.Matches(labels.Set(namespaceLabelMap))
+}
+
+func (s *selector) addEntry(user ipset.UID, entry string, comment string) error {
 	return s.ips.AddEntry(user, s.spec.ipsetName, entry, comment)
 }
 
-func (s *selector) delEntry(user types.UID, entry string) error {
+func (s *selector) delEntry(user ipset.UID, entry string) error {
 	return s.ips.DelEntry(user, s.spec.ipsetName, entry)
 }
 
@@ -85,7 +106,7 @@ type selectorSet struct {
 	// invoked after the last instance of target selector has been deprovisioned
 	onDestroyTargetSelector selectorWithPolicyTypeFn
 
-	users   map[string]map[types.UID]struct{} // list of users per selector
+	users   map[string]map[ipset.UID]struct{} // list of users per selector
 	entries map[string]*selector
 
 	// We need to keep track of target selector instances to be able to invoke
@@ -100,16 +121,16 @@ func newSelectorSet(ips ipset.Interface, onNewSelector selectorFn, onNewTargetSe
 		onNewSelector:           onNewSelector,
 		onNewTargetSelector:     onNewTargetSelector,
 		onDestroyTargetSelector: onDestroyTargetSelector,
-		users:                make(map[string]map[types.UID]struct{}),
-		entries:              make(map[string]*selector),
-		targetSelectorsCount: make(map[string]map[policyType]int)}
+		users:                   make(map[string]map[ipset.UID]struct{}),
+		entries:                 make(map[string]*selector),
+		targetSelectorsCount:    make(map[string]map[policyType]int)}
 }
 
-func (ss *selectorSet) addToMatching(user types.UID, labelMap map[string]string, entry string, comment string) (bool, bool, error) {
+func (ss *selectorSet) addToMatchingPodSelector(user ipset.UID, podLabelsMap map[string]string, entry string, comment string) (bool, bool, error) {
 	foundIngress := false
 	foundEgress := false
 	for _, s := range ss.entries {
-		if s.matches(labelMap) {
+		if s.matchesPodSelector(podLabelsMap) {
 			if ss.targetSelectorExist(s, policyTypeIngress) {
 				foundIngress = true
 			}
@@ -124,9 +145,53 @@ func (ss *selectorSet) addToMatching(user types.UID, labelMap map[string]string,
 	return foundIngress, foundEgress, nil
 }
 
-func (ss *selectorSet) delFromMatching(user types.UID, labelMap map[string]string, entry string) error {
+func (ss *selectorSet) addToMatchingNamespaceSelector(user ipset.UID, namespaceLabelsMap map[string]string, entry string, comment string) error {
 	for _, s := range ss.entries {
-		if s.matches(labelMap) {
+		if s.matchesNamespaceSelector(namespaceLabelsMap) {
+			if err := s.addEntry(user, entry, comment); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (ss *selectorSet) addToMatchingNamespacedPodSelector(user ipset.UID, podLabelsMap map[string]string, namespaceLabelsMap map[string]string, entry string, comment string) error {
+	for _, s := range ss.entries {
+		if s.matchesNamespacedPodSelector(podLabelsMap, namespaceLabelsMap) {
+			if err := s.addEntry(user, entry, comment); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (ss *selectorSet) delFromMatchingPodSelector(user ipset.UID, podLabelsMap map[string]string, entry string) error {
+	for _, s := range ss.entries {
+		if s.matchesPodSelector(podLabelsMap) {
+			if err := s.delEntry(user, entry); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (ss *selectorSet) delFromMatchingNamespaceSelector(user ipset.UID, namespaceLabelsMap map[string]string, entry string) error {
+	for _, s := range ss.entries {
+		if s.matchesNamespaceSelector(namespaceLabelsMap) {
+			if err := s.delEntry(user, entry); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (ss *selectorSet) delFromMatchingNamespacedPodSelector(user ipset.UID, podLabelsMap map[string]string, namespaceLabelsMap map[string]string, entry string) error {
+	for _, s := range ss.entries {
+		if s.matchesNamespacedPodSelector(podLabelsMap, namespaceLabelsMap) {
 			if err := s.delEntry(user, entry); err != nil {
 				return err
 			}
@@ -139,7 +204,7 @@ func (ss *selectorSet) targetSelectorExist(s *selector, policyType policyType) b
 	return ss.targetSelectorsCount[s.spec.key][policyType] > 0
 }
 
-func (ss *selectorSet) deprovision(user types.UID, current, desired map[string]*selectorSpec) error {
+func (ss *selectorSet) deprovision(user ipset.UID, current, desired map[string]*selectorSpec) error {
 	for key, spec := range current {
 		if _, found := desired[key]; !found {
 			delete(ss.users[key], user)
@@ -167,7 +232,7 @@ func (ss *selectorSet) deprovision(user types.UID, current, desired map[string]*
 	return nil
 }
 
-func (ss *selectorSet) provision(user types.UID, current, desired map[string]*selectorSpec) error {
+func (ss *selectorSet) provision(user ipset.UID, current, desired map[string]*selectorSpec) error {
 	for key, spec := range desired {
 		if _, found := current[key]; !found {
 			selector := &selector{ss.ips, spec}
@@ -180,7 +245,7 @@ func (ss *selectorSet) provision(user types.UID, current, desired map[string]*se
 				if err := ss.onNewSelector(selector); err != nil {
 					return err
 				}
-				ss.users[key] = make(map[types.UID]struct{})
+				ss.users[key] = make(map[ipset.UID]struct{})
 				ss.entries[key] = selector
 			}
 			ss.users[key][user] = struct{}{}

npc/ulogd/ulogd.go

@@ -6,7 +6,7 @@ import (
 	"os/exec"
 	"syscall"
 
-	"github.com/weaveworks/weave/common"
+	"github.com/rajch/weave/common"
 )
 
 func waitForExit(cmd *exec.Cmd) {

original/.circleci/config.yml

@@ -0,0 +1,123 @@
+version: 2
+defaults: &defaults
+  docker:
+    - image: weaveworks/weavebuild:master-1dfe1f3b
+  working_directory: /go/src/github.com/weaveworks/weave
+
+jobs:
+  lint:
+    <<: *defaults
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - run: make DEBUG=1 BUILD_IN_CONTAINER=false lint
+
+  unit-test:
+    <<: *defaults
+    parallelism: 2
+    steps:
+      - checkout
+      - run: COVERDIR=test/coverage make BUILD_IN_CONTAINER=false tests
+      - persist_to_workspace:
+          root: .
+          paths:
+          - test/coverage
+
+  build:
+    <<: *defaults
+    steps:
+      - checkout
+      - setup_remote_docker
+      - run: git submodule update --init
+      - run: make COVERAGE=true BUILD_IN_CONTAINER=false SUDO= exes all
+      - persist_to_workspace:
+          root: .
+          paths:
+          - weave.tar.gz
+          - tools/runner/runner
+          - test/tls/tls
+
+  smoke-tests:
+    machine:
+      image: circleci/classic:201709-01
+    working_directory: /home/circleci/src/github.com/weaveworks/weave
+    environment:
+      SRCDIR: /home/circleci/src/github.com/weaveworks/weave
+      CIRCLE_ARTIFACTS: /tmp/artifacts
+    parallelism: 2
+    steps:
+      - checkout
+      - run: mkdir $CIRCLE_ARTIFACTS
+      - run: git submodule update --init
+      - attach_workspace:
+          at: .
+      # kick off creation of test VMs
+      - run: bin/provision_test_vms.sh
+      # when VMs are ready, copy built software to them
+      - run: bin/circle-test-pre
+      - run:
+          command: bin/circle-test-smoke
+          no_output_timeout: 360s
+      # Destroy testing VMs:
+      - run:
+          command: bin/circle-destroy-vms
+          background: true
+      - persist_to_workspace:
+          root: .
+          paths:
+          - test/coverage
+      - store_artifacts:
+          path: /tmp/artifacts
+
+  gen-coverage:
+    <<: *defaults
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/artifacts
+    steps:
+      - checkout
+      - run: mkdir $CIRCLE_ARTIFACTS
+      - attach_workspace:
+          at: .
+      - run: cd test; ./gen_coverage_reports.sh
+      - run: goveralls -repotoken $COVERALLS_REPO_TOKEN -coverprofile=test/profile.cov -service=circleci
+      - run: cp test/coverage.* $CIRCLE_ARTIFACTS
+      - store_artifacts:
+          path: /tmp/artifacts
+
+  deploy:
+    <<: *defaults
+    steps:
+      - checkout
+      - setup_remote_docker
+      # Register qemu hooks, rebuild without coverage and push to dockerhub
+      - deploy:
+          command: |
+            docker login -u $DOCKER_USER -p $DOCKER_PASS
+            docker run --rm --privileged multiarch/qemu-user-static:register --reset
+            wget https://github.com/estesp/manifest-tool/releases/download/v0.8.0/manifest-tool-linux-amd64
+            chmod +x manifest-tool-linux-amd64
+            make clean-bin
+            make publish MANIFEST_TOOL_CMD=./manifest-tool-linux-amd64 UPDATE_LATEST=latest-only SUDO= BUILD_IN_CONTAINER=false
+
+workflows:
+  version: 2
+  build_test:
+    jobs:
+      - lint
+      - unit-test
+      - build
+      - smoke-tests:
+          requires:
+            - lint
+            - unit-test
+            - build
+      - gen-coverage:
+          requires:
+            - unit-test
+            - smoke-tests
+      - deploy:
+          requires:
+            - smoke-tests
+          filters:
+            branches:
+              only: master

original/Gopkg.toml

@@ -0,0 +1,34 @@
+# Pin to version before sctp was added, because latest libnetwork is
+# incompatible with latest sctp
+[[constraint]]
+  name = "github.com/docker/libnetwork"
+  revision = "119badbd"
+
+# Encourage dep not to use the docker-1.9 version
+[[constraint]]
+  name = "github.com/fsouza/go-dockerclient"
+  version = "1"
+
+# Use recent version: last tagged version is years old
+[[constraint]]
+  branch = "master"
+  name = "github.com/prometheus/client_golang"
+
+# For compatibility with fsouza/go-dockerclient
+[[constraint]]
+  branch = "master"
+  name = "github.com/docker/docker"
+
+# Most recent release tag is incompatible with docker/docker; see https://github.com/docker/distribution/issues/2503
+[[override]]
+  branch = "master"
+  name = "github.com/docker/distribution"
+
+# v8.0.0 removes juju/ratelimit licensed under LGPL3
+[[constraint]]
+  name = "k8s.io/client-go"
+  revision = "v8.0.0"
+
+[prune]
+  go-tests = true
+  unused-packages = true

original/Makefile

@@ -0,0 +1,430 @@
+.DEFAULT: all
+.PHONY: all exes testrunner update tests lint publish-one-arch $(PUBLISH) clean clean-bin clean-work-dir prerequisites build run-smoketests
+
+# If you can use docker without being root, you can do "make SUDO="
+SUDO=$(shell docker info >/dev/null 2>&1 || echo "sudo -E")
+BUILD_IN_CONTAINER=true
+RM=--rm
+RUN_FLAGS=-ti
+COVERAGE=
+
+# This specifies the architecture we're building for
+ARCH?=amd64
+
+# We're using QEMU to be able to build Docker images for other architectures
+# from amd64 machines.
+QEMU_VERSION=v2.7.0
+
+# A list of all supported architectures here. Should be named as Go is naming platforms
+# All supported architectures must have an "ifeq" block below that customizes the parameters
+ALL_ARCHITECTURES=amd64 arm arm64 ppc64le s390x
+ML_PLATFORMS=linux/amd64,linux/arm,linux/arm64,linux/ppc64le,linux/s390x
+
+ifeq ($(ARCH),amd64)
+# The architecture to use when downloading the docker binary
+	WEAVEEXEC_DOCKER_ARCH?=x86_64
+
+# The name of the alpine baseimage to use as the base for weave images
+	ALPINE_BASEIMAGE?=alpine:3.10
+
+# The extension for the made images
+# Specifying none means for example weaveworks/weave:latest
+	ARCH_EXT?=
+
+# The name of the gcc we're using for compiling C code
+	CC=gcc
+
+# Optional parameters that can be passed when linking C code into the Go binary
+	CGO_LDFLAGS=
+endif
+ifeq ($(ARCH),arm)
+# The architecture to use when downloading the docker binary
+	WEAVEEXEC_DOCKER_ARCH?=armel
+
+# Using the (semi-)official alpine image
+	ALPINE_BASEIMAGE?=arm32v6/alpine:3.8
+
+# arm images have the -arm suffix, for instance weaveworks/weave-arm:latest
+	ARCH_EXT?=-arm
+
+# The name of the gcc binary
+	CC=arm-linux-gnueabihf-gcc
+
+# The architecture name to use when downloading a prebuilt QEMU binary
+	QEMUARCH=arm
+
+# In the weaveworks/build image; libpcap libraries for arm are placed here
+# Tell the gcc linker to search for libpcap here
+	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
+endif
+ifeq ($(ARCH),arm64)
+# Use the arm 32-bit docker client variant
+	WEAVEEXEC_DOCKER_ARCH?=armel
+
+# Using the (semi-)official alpine image
+	ALPINE_BASEIMAGE?=arm64v8/alpine:3.8
+
+# arm64 images have the -arm64 suffix, for instance weaveworks/weave-arm64:latest
+	ARCH_EXT?=-arm64
+
+# The name of the gcc binary
+	CC=aarch64-linux-gnu-gcc
+
+# The architecture name to use when downloading a prebuilt QEMU binary
+	QEMUARCH=aarch64
+
+# In the weaveworks/build image; libpcap libraries for arm64 are placed here
+# Tell the gcc linker to search for libpcap here
+	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
+endif
+ifeq ($(ARCH),ppc64le)
+# The architecture to use when downloading the docker binary
+	WEAVEEXEC_DOCKER_ARCH?=ppc64le
+
+# Using the (semi-)official alpine image
+	ALPINE_BASEIMAGE?=ppc64le/alpine:3.8
+
+# ppc64le images have the -ppc64le suffix, for instance weaveworks/weave-ppc64le:latest
+	ARCH_EXT?=-ppc64le
+
+# The name of the gcc binary
+	CC=powerpc64le-linux-gnu-gcc
+
+# The architecture name to use when downloading a prebuilt QEMU binary
+	QEMUARCH=ppc64le
+
+# In the weaveworks/build image; libpcap libraries for ppc64le are placed here
+# Tell the gcc linker to search for libpcap here
+	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
+endif
+ifeq ($(ARCH),s390x)
+# The architecture to use when downloading the docker binary
+	WEAVEEXEC_DOCKER_ARCH?=s390x
+
+# Using the (semi-)official alpine image
+	ALPINE_BASEIMAGE?=s390x/alpine:3.6
+
+# s390x images have the -s390x suffix, for instance weaveworks/weave-s390x:latest
+	ARCH_EXT?=-s390x
+
+# The name of the gcc binary
+	CC=s390x-linux-gnu-gcc
+
+# The architecture name to use when downloading a prebuilt QEMU binary
+	QEMUARCH=s390x
+
+# In the weaveworks/build image; libpcap libraries for s390x are placed here
+# Tell the gcc linker to search for libpcap here
+	CGO_LDFLAGS="-L/usr/local/lib/$(CC)"
+endif
+
+# The name of the user that this Makefile should produce image artifacts for. Can/should be overridden
+DOCKERHUB_USER?=weaveworks
+# The default version that's chosen when pushing the images. Can/should be overridden
+GIT_REVISION=$(shell git rev-parse HEAD)
+WEAVE_VERSION?=git-$(shell git rev-parse --short=12 HEAD)
+# Docker Store does not allow the "latest" tag.
+NET_PLUGIN_LATEST=latest_release
+
+# Paths to all relevant binaries that should be compiled
+WEAVER_EXE=prog/weaver/weaver
+SIGPROXY_EXE=prog/sigproxy/sigproxy
+KUBEUTILS_EXE=prog/kube-utils/kube-utils
+WEAVENPC_EXE=prog/weave-npc/weave-npc
+WEAVEWAIT_EXE=prog/weavewait/weavewait
+WEAVEWAIT_NOOP_EXE=prog/weavewait/weavewait_noop
+WEAVEWAIT_NOMCAST_EXE=prog/weavewait/weavewait_nomcast
+WEAVEUTIL_EXE=prog/weaveutil/weaveutil
+RUNNER_EXE=tools/runner/runner
+# Get this from https://github.com/estesp/manifest-tool/releases
+MANIFEST_TOOL_CMD=manifest-tool
+TEST_TLS_EXE=test/tls/tls
+NETWORKTESTER_EXE=test/images/network-tester/webserver
+
+# All binaries together in a list
+EXES=$(WEAVER_EXE) $(SIGPROXY_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVEUTIL_EXE) $(RUNNER_EXE) $(TEST_TLS_EXE) $(NETWORKTESTER_EXE)
+
+# These stamp files are used to mark the current state of the build; whether an image has been built or not
+BUILD_UPTODATE=.build.uptodate
+WEAVER_UPTODATE=.weaver$(ARCH_EXT).uptodate
+WEAVEEXEC_UPTODATE=.weaveexec$(ARCH_EXT).uptodate
+PLUGIN_UPTODATE=.net-plugin$(ARCH_EXT).uptodate
+WEAVEKUBE_UPTODATE=.weavekube$(ARCH_EXT).uptodate
+WEAVENPC_UPTODATE=.weavenpc$(ARCH_EXT).uptodate
+WEAVEDB_UPTODATE=.weavedb.uptodate
+NETWORKTESTER_UPTODATE=.networktester$(ARCH_EXT).uptodate
+
+IMAGES_UPTODATE=$(WEAVER_UPTODATE) $(WEAVEEXEC_UPTODATE) $(WEAVEKUBE_UPTODATE) $(WEAVENPC_UPTODATE) $(NETWORKTESTER_UPTODATE)
+
+# The names of the images. Note that the images for other architectures than amd64 have a suffix in the image name.
+WEAVER_IMAGE=$(DOCKERHUB_USER)/weave$(ARCH_EXT)
+WEAVEEXEC_IMAGE=$(DOCKERHUB_USER)/weaveexec$(ARCH_EXT)
+WEAVEKUBE_IMAGE=$(DOCKERHUB_USER)/weave-kube$(ARCH_EXT)
+WEAVENPC_IMAGE=$(DOCKERHUB_USER)/weave-npc$(ARCH_EXT)
+BUILD_IMAGE=weaveworks/weavebuild
+WEAVEDB_IMAGE=$(DOCKERHUB_USER)/weavedb
+PLUGIN_IMAGE=$(DOCKERHUB_USER)/net-plugin
+NETWORKTESTER_IMAGE=$(DOCKERHUB_USER)/network-tester
+
+IMAGES=$(WEAVER_IMAGE) $(WEAVEEXEC_IMAGE) $(WEAVEKUBE_IMAGE) $(WEAVENPC_IMAGE) $(WEAVEDB_IMAGE) $(NETWORKTESTER_IMAGE)
+
+PLUGIN_WORK_DIR="prog/net-plugin/rootfs"
+PLUGIN_BUILD_IMG="plugin-builder"
+
+PUBLISH=publish_weave publish_weaveexec publish_weave-kube publish_weave-npc
+PUSH_ML=push_ml_weave push_ml_weaveexec push_ml_weave-kube push_ml_weave-npc
+
+WEAVE_EXPORT=weave$(ARCH_EXT).tar.gz
+
+# The flags we are passing to go build. -extldflags -static for making a static binary, 
+# -X main.version for telling the Go binary which version it is,
+# -s -w drop symbol tables used by debuggers (not Go's internal symbol info)
+# -tags "osusergo netgo" to use native Go UID and DNS implementations
+BUILD_FLAGS=-ldflags "-extldflags -static -X main.version=$(WEAVE_VERSION) -s -w" -tags "osusergo netgo"
+
+PACKAGE_BASE=$(shell go list -e ./)
+
+all: $(WEAVE_EXPORT)
+testrunner: $(RUNNER_EXE) $(TEST_TLS_EXE)
+
+$(WEAVER_EXE) $(WEAVEUTIL_EXE): common/*.go common/*/*.go net/*.go net/*/*.go
+$(WEAVER_EXE): router/*.go ipam/*.go ipam/*/*.go db/*.go nameserver/*.go prog/weaver/*.go
+$(WEAVER_EXE): api/*.go plugin/*.go plugin/*/*
+$(WEAVER_EXE):  proxy/*.go
+$(WEAVEUTIL_EXE): prog/weaveutil/*.go net/*.go plugin/net/*.go plugin/ipam/*.go db/*.go
+$(SIGPROXY_EXE): prog/sigproxy/*.go
+$(KUBEUTILS_EXE): prog/kube-utils/*.go
+$(WEAVENPC_EXE): prog/weave-npc/*.go npc/*.go npc/*/*.go
+$(TEST_TLS_EXE): test/tls/*.go
+$(RUNNER_EXE): tools/runner/*.go
+$(WEAVEWAIT_NOOP_EXE): prog/weavewait/*.go
+$(WEAVEWAIT_EXE): prog/weavewait/*.go net/*.go
+$(WEAVEWAIT_NOMCAST_EXE): prog/weavewait/*.go net/*.go
+$(NETWORKTESTER_EXE): test/images/network-tester/*.go
+tests: tools/.git
+lint: tools/.git
+
+ifeq ($(BUILD_IN_CONTAINER),true)
+
+# This make target compiles all binaries inside of the weaveworks/build container
+# It bind-mounts the source into the container and passes all important variables
+exes $(EXES) tests lint: $(BUILD_UPTODATE)
+	$(SUDO) docker run $(RM) $(RUN_FLAGS) \
+	    -v $(shell pwd):/go/src/github.com/weaveworks/weave \
+		-e GOARCH=$(ARCH) -e CGO_ENABLED=1 -e GOOS=linux -e CIRCLECI -e CIRCLE_BUILD_NUM -e CIRCLE_NODE_TOTAL -e CIRCLE_NODE_INDEX -e COVERDIR -e SLOW -e DEBUG \
+		$(BUILD_IMAGE) COVERAGE=$(COVERAGE) WEAVE_VERSION=$(WEAVE_VERSION) CC=$(CC) QEMUARCH=$(QEMUARCH) CGO_LDFLAGS=$(CGO_LDFLAGS) $@
+	touch $@
+
+else
+
+exes: $(EXES)
+
+$(WEAVER_EXE):
+ifeq ($(COVERAGE),true)
+	$(eval COVERAGE_MODULES := $(shell (go list ./$(@D); go list -f '{{join .Deps "\n"}}' ./$(@D) | grep "^$(PACKAGE_BASE)/") | grep -v "^$(PACKAGE_BASE)/vendor/" | paste -s -d,))
+	go test -c -o ./$@ $(BUILD_FLAGS) -v -covermode=atomic -coverpkg $(COVERAGE_MODULES) ./$(@D)/
+else
+	go build $(BUILD_FLAGS) -o $@ ./$(@D)
+endif
+
+$(WEAVEUTIL_EXE) $(KUBEUTILS_EXE) $(WEAVENPC_EXE) $(NETWORKTESTER_EXE):
+	go build $(BUILD_FLAGS) -o $@ ./$(@D)
+
+$(WEAVEWAIT_EXE):
+	go build $(BUILD_FLAGS) -tags "osusergo netgo iface mcast" -o $@ ./$(@D)
+
+$(WEAVEWAIT_NOMCAST_EXE):
+	go build $(BUILD_FLAGS) -tags "osusergo netgo iface" -o $@ ./$(@D)
+
+# These programs need a separate rule as they fail the netgo check in
+# the main build stanza due to not importing net package
+$(SIGPROXY_EXE) $(TEST_TLS_EXE) $(WEAVEWAIT_NOOP_EXE) $(RUNNER_EXE):
+	go build $(BUILD_FLAGS) -o $@ ./$(@D)
+
+tests:
+	./tools/test -no-go-get -netgo -timeout 8m
+
+lint:
+	./tools/lint -nocomment -notestpackage
+
+endif
+
+# This rule makes sure the build image is up-to-date.
+# It also makes sure the multiarch hooks are reqistered in the kernel so the QEMU emulation works
+$(BUILD_UPTODATE): build/* tools/.git
+	$(SUDO) docker build -t $(BUILD_IMAGE) build/
+	$(SUDO) docker tag $(BUILD_IMAGE) $(BUILD_IMAGE):$(shell tools/image-tag)
+	$(SUDO) docker run --rm --privileged multiarch/qemu-user-static:register --reset
+	touch $@
+
+# Creates the Dockerfile.your-user-here file from the template
+# Also replaces all placeholders with real values
+# If the architecture is amd64, it deletes all CROSS_BUILD lines
+# but otherwise, it only removes the "CROSS_BUILD_" placeholder and downloads QEMU
+%/Dockerfile.$(DOCKERHUB_USER): %/Dockerfile.template
+	echo "DOCKERHUB_USER|$(DOCKERHUB_USER)|g;s|ARCH_EXT|$(ARCH_EXT)|g;s|ALPINE_BASEIMAGE|$(ALPINE_BASEIMAGE)|g;s|QEMUARCH|$(QEMUARCH)"
+	sed -e "s|DOCKERHUB_USER|$(DOCKERHUB_USER)|g;s|ARCH_EXT|$(ARCH_EXT)|g;s|ALPINE_BASEIMAGE|$(ALPINE_BASEIMAGE)|g;s|QEMUARCH|$(QEMUARCH)|g" $^ > $@
+ifeq ($(ARCH),amd64)
+# When building "normally" for amd64, remove the whole line, it has no part in the amd64 image
+	sed -i.bak "/CROSS_BUILD_/d" $@
+else
+# When cross-building, only the placeholder "CROSS_BUILD_" should be removed
+# Register /usr/bin/qemu-ARCH-static as the handler for ARM and ppc64le binaries in the kernel
+	curl -sSL https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/x86_64_qemu-$(QEMUARCH)-static.tar.gz | tar -xz -C $(shell dirname $@)
+	cd $(shell dirname $@) && sha256sum -c $(shell pwd)/build/shasums/qemu-$(QEMUARCH)-static.sha256sum
+	sed -i.bak "s/CROSS_BUILD_//g" $@
+endif
+
+# The targets below builds the weave images
+$(WEAVER_UPTODATE): prog/weaver/Dockerfile.$(DOCKERHUB_USER) $(WEAVER_EXE) weave $(WEAVEUTIL_EXE)
+	cp $(WEAVEUTIL_EXE) prog/weaver/weaveutil
+	cp weave prog/weaver/weave
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaver/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVER_IMAGE) prog/weaver
+	touch $@
+
+$(WEAVEEXEC_UPTODATE): prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) prog/weaveexec/symlink $(SIGPROXY_EXE) $(WEAVEWAIT_EXE) $(WEAVEWAIT_NOOP_EXE) $(WEAVEWAIT_NOMCAST_EXE) $(WEAVER_UPTODATE)
+	cp $(SIGPROXY_EXE) prog/weaveexec/sigproxy
+	cp $(WEAVEWAIT_EXE) prog/weaveexec/weavewait
+	cp $(WEAVEWAIT_NOOP_EXE) prog/weaveexec/weavewait_noop
+	cp $(WEAVEWAIT_NOMCAST_EXE) prog/weaveexec/weavewait_nomcast
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weaveexec/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEEXEC_IMAGE) prog/weaveexec
+	touch $@
+
+# Builds Docker plugin.
+$(PLUGIN_UPTODATE): prog/net-plugin/launch.sh prog/net-plugin/config.json $(WEAVER_UPTODATE)
+	-$(SUDO) docker rm -f $(PLUGIN_BUILD_IMG) 2>/dev/null
+	$(SUDO) docker create --name=$(PLUGIN_BUILD_IMG) $(WEAVER_IMAGE) true
+	rm -rf $(PLUGIN_WORK_DIR)
+	mkdir $(PLUGIN_WORK_DIR)
+	$(SUDO) docker export $(PLUGIN_BUILD_IMG) | tar -x -C $(PLUGIN_WORK_DIR)
+	$(SUDO) docker rm -f $(PLUGIN_BUILD_IMG)
+	cp prog/net-plugin/launch.sh $(PLUGIN_WORK_DIR)/home/weave/launch.sh
+	-$(SUDO) docker plugin disable $(PLUGIN_IMAGE):$(WEAVE_VERSION) 2>/dev/null
+	-$(SUDO) docker plugin rm $(PLUGIN_IMAGE):$(WEAVE_VERSION) 2>/dev/null
+	$(SUDO) docker plugin create $(PLUGIN_IMAGE):$(WEAVE_VERSION) prog/net-plugin
+	-$(SUDO) docker plugin disable $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) 2>/dev/null
+	-$(SUDO) docker plugin rm $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) 2>/dev/null
+	$(SUDO) docker plugin create $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST) prog/net-plugin
+	touch $@
+
+$(WEAVEKUBE_UPTODATE): prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) prog/weave-kube/launch.sh $(KUBEUTILS_EXE) $(WEAVER_UPTODATE)
+	cp $(KUBEUTILS_EXE) prog/weave-kube/
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-kube/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVEKUBE_IMAGE) prog/weave-kube
+	touch $@
+
+$(WEAVENPC_UPTODATE): prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) $(WEAVENPC_EXE) prog/weave-npc/ulogd.conf
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -f prog/weave-npc/Dockerfile.$(DOCKERHUB_USER) -t $(WEAVENPC_IMAGE) prog/weave-npc
+	touch $@
+
+$(WEAVEDB_UPTODATE): prog/weavedb/Dockerfile
+	$(SUDO) docker build --build-arg=revision=$(GIT_REVISION) -t $(WEAVEDB_IMAGE) prog/weavedb
+	touch $@
+
+$(NETWORKTESTER_UPTODATE): test/images/network-tester/Dockerfile $(NETWORKTESTER_EXE)
+	$(SUDO) docker build -t $(NETWORKTESTER_IMAGE) test/images/network-tester
+	touch $@
+
+$(WEAVE_EXPORT): $(IMAGES_UPTODATE) $(WEAVEDB_UPTODATE)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker save $(addsuffix :latest,$(IMAGES)) | gzip > $@
+
+tools/.git:
+	git submodule update --init
+
+# CODE FOR PUBLISHING THE IMAGES
+
+# Push plugin
+plugin_publish: $(PLUGIN_UPTODATE)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker plugin push $(PLUGIN_IMAGE):$(WEAVE_VERSION)
+# "$(NET_PLUGIN_LATEST)" means "stable release" here, so only push that if explicitly told to
+ifeq ($(UPDATE_LATEST),true)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker plugin push $(PLUGIN_IMAGE):$(NET_PLUGIN_LATEST)
+endif
+
+# This target first runs "make publish" for each architecture
+# Then it pushes the manifest lists
+publish: $(addprefix sub-publish-,$(ALL_ARCHITECTURES)) $(WEAVEDB_UPTODATE)
+	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) $(PUSH_ML)
+ifeq ($(PUBLISH_WEAVEDB),true)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/weavedb:latest
+endif
+
+sub-publish-%:
+	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) clean-bin
+	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) $(IMAGES_UPTODATE)
+	$(MAKE) ARCH=$* DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) publish-one-arch
+
+publish-one-arch: $(PUBLISH)
+
+# This rule handles the pushing of the built images
+$(PUBLISH): publish_%: $(IMAGES_UPTODATE)
+# Tag :latest with the real version
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*$(ARCH_EXT) $(DOCKERHUB_USER)/$*$(ARCH_EXT):$(WEAVE_VERSION)
+# Push the image with the arch suffix for arm, arm64 and ppc64le, and without suffix for amd64
+	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) push_$*$(ARCH_EXT)
+
+ifeq ($(ARCH),amd64)
+# If the architecture is amd64, add the -amd64 suffix.
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION) $(DOCKERHUB_USER)/$*-amd64:$(WEAVE_VERSION)
+# If the version is latest, tag the -amd64 with latest as well
+ifneq ($(UPDATE_LATEST),false)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker tag  $(DOCKERHUB_USER)/$*-amd64:$(WEAVE_VERSION) $(DOCKERHUB_USER)/$*-amd64:latest
+endif
+# Push the image with the -amd64-suffix so BINARY-ARCH-named images exist for all arches, so manifest lists may be made and ARCH is replaceable in scripts
+	$(MAKE) DOCKER_HOST=$(DOCKER_HOST) DOCKERHUB_USER=$(DOCKERHUB_USER) WEAVE_VERSION=$(WEAVE_VERSION) UPDATE_LATEST=$(UPDATE_LATEST) push_$*-amd64
+endif
+
+# This target pushes an image, and if UPDATE_LATEST is anything but false, also updates the latest tag
+# It takes one parameter, the image name
+push_%:
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
+ifneq ($(UPDATE_LATEST),false)
+	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker push $(DOCKERHUB_USER)/$*:latest
+endif
+
+# This target pushes a manifest list; it takes one parameter, the image name.
+# The variable UPDATE_LATEST controls whether it updates the versioned tag and/or the latest tag
+$(PUSH_ML): push_ml_%:
+ifneq ($(UPDATE_LATEST),latest-only)
+	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:$(WEAVE_VERSION) --target $(DOCKERHUB_USER)/$*:$(WEAVE_VERSION)
+endif
+ifneq ($(UPDATE_LATEST),false)
+# Push the manifest list to :latest as well
+	$(MANIFEST_TOOL_CMD) push from-args --platforms $(ML_PLATFORMS) --template $(DOCKERHUB_USER)/$*-ARCH:latest --target $(DOCKERHUB_USER)/$*:latest
+endif
+
+clean-work-dir:
+	rm -rf $(PLUGIN_WORK_DIR)
+
+clean-bin:
+	-$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker rmi $(IMAGES)
+	find prog -type f -name "Dockerfile.*" -not -name "Dockerfile.template" -print | xargs rm -f
+	find prog -type f -name "*qemu-*" -print | xargs rm -f
+	go clean ./...
+	rm -rf $(EXES) $(IMAGES_UPTODATE) $(WEAVEDB_UPTODATE) weave*.tar.gz .cache
+
+clean: clean-bin clean-work-dir
+	-$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker rmi $(BUILD_IMAGE)
+	rm -rf test/tls/*.pem test/coverage.* test/coverage $(BUILD_UPTODATE)
+
+build:
+	$(MAKE)
+
+run-smoketests: all testrunner
+	cd test && ./setup.sh && ./run_all.sh
+
+integration-tests: all testrunner
+# Usage:
+#   $ make \
+#     NAME="<prefix used to name VMs and other resources>" \
+#     PROVIDER="<provider among {vagrant|gcp|aws|do}>" \
+#     NUM_HOSTS="<# test machines>" \
+#     PLAYBOOK="<filename>" \
+#     RUNNER_ARGS="<...>" \
+#     TESTS="<...>" \  # Can be set to only run one or a few tests instead of the full test suite.
+#     DOCKER_VERSION=<...> \
+#     KUBERNETES_VERSION=<...> \
+#     KUBERNETES_CNI_VERSION=<...> \
+#     <...> # See also run-integration-test.sh for all variables and individual functions.
+#     integration-tests
+#
+	RUNNER_ARGS="-parallel" ./test/run-integration-tests.sh

original/README.md

@@ -0,0 +1,37 @@
+# Weave Net - Weaving Containers into Applications
+
+[![Integration Tests](https://circleci.com/gh/weaveworks/weave/tree/master.svg?style=shield)](https://circleci.com/gh/weaveworks/weave)
+[![Coverage Status](https://coveralls.io/repos/weaveworks/weave/badge.svg)](https://coveralls.io/r/weaveworks/weave)
+[![Go Report Card](https://goreportcard.com/badge/github.com/weaveworks/weave)](https://goreportcard.com/report/github.com/weaveworks/weave)
+[![Docker Pulls](https://img.shields.io/docker/pulls/weaveworks/weave.svg?maxAge=604800)](https://hub.docker.com/r/weaveworks/weave/)
+
+# About Weaveworks
+
+[Weaveworks](https://www.weave.works) is the company that delivers the most productive way for developers to connect, observe and control Docker containers.
+
+This repository contains [Weave Net](https://www.weave.works/products/weave-net/), the first product developed by Weaveworks, with over 8 million downloads to date. Weave Net enables you to get started with Docker clusters and portable apps in a fraction of the time required by other solutions.
+
+# Weave Net
+
+Weave Net creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery. With Weave Net, portable microservices-based applications consisting of multiple containers can run anywhere: on one host, multiple hosts or even across cloud providers and data centers. Applications use the network just as if the containers were all plugged into the same network switch, without having to configure port mappings, ambassadors or links.
+
+Services provided by application containers on the Weave network can be exposed to the outside world, regardless of where they are running. Similarly, existing internal systems can be opened to accept connections from application containers irrespective of their location.
+
+## <a name="help"></a>Getting help
+
+If you have any questions about, feedback for or a problem with Weave Net:
+
+- Read [the Weave Net docs](https://www.weave.works/docs/net/latest/overview).
+- Invite yourself to the <a href="https://slack.weave.works/" target="_blank">Weave Users Slack</a>.
+  - The channel for contributors and developers of Weave Net is [#net-dev](https://weave-community.slack.com/messages/net-dev/).
+- Join the <a href="https://www.meetup.com/pro/Weave/"> Weave User Group </a> and get invited to online talks, hands-on training and meetups in your area.
+- [File an issue](https://github.com/weaveworks/weave/issues/new).
+
+We follow the [CNCF Code of Conduct](code-of-conduct.md).
+
+Your feedback is always welcome!
+
+## Further Information
+
+* [Installing Weave Net](https://www.weave.works/docs/net/latest/install/installing-weave)
+* [Weave Net Product Overview](https://www.weave.works/products/weave-net)

original/SECURITY.md

@@ -0,0 +1,12 @@
+# Security Policy
+
+At Weaveworks we take security very seriously, and value our close relationship with members of the security community.
+
+## Supported Versions
+
+As an Open Source project, only the latest code has all fixes and security patches.
+If you require a higher level of commitment, please [contact Weaveworks](https://www.weave.works/contact/) to discuss.
+
+## Reporting a Vulnerability
+
+To submit a security bug report please e-mail us at security@weave.works.

original/bin/circle-deploy-master

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+docker login -u $DOCKER_USER -p $DOCKER_PASS
+make clean-bin
+# CircleCI doesn't let us install the qemu module to do ARM docker builds
+make publish ALL_ARCHITECTURES=amd64 UPDATE_LATEST=latest-only SUDO= BUILD_IN_CONTAINER=false

original/bin/circle-destroy-vms

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+
+source "$SRCDIR/bin/circle-env"
+cd "$SRCDIR/test"
+./run-integration-tests.sh destroy

original/bin/circle-env

@@ -0,0 +1,11 @@
+# Set environment variables here because CircleCI can't expand $FOO in 'env' section
+
+export PATH="$PATH:$HOME/.local/bin:/opt/google-cloud-sdk/bin"
+export CLOUDSDK_CORE_DISABLE_PROMPTS=1
+# Base name of VMs for integration tests:
+export NAME=test-$CIRCLE_BUILD_NUM-$CIRCLE_NODE_INDEX
+export TEST_VMS_PROV_AND_CONF_LOCK_FILE=$CIRCLE_ARTIFACTS/test_vms_provisioned_and_configured.txt
+export TEST_VMS_READY_LOCK_FILE=$CIRCLE_ARTIFACTS/test_vms_ready.txt
+# Google Cloud Platorm images for integration tests:
+export USE_IMAGE=1
+export DISK_NAME_PREFIX=test-$CIRCLE_BUILD_NUM-0

original/bin/circle-test-pre

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+
+# Signal failures in lock file, in order to fail fast:
+function signal_failure() {
+    echo "KO" >"$TEST_VMS_READY_LOCK_FILE"
+    exit 1
+}
+trap signal_failure ERR
+
+source "$(dirname "$0")/wait_for.sh"
+
+[ -n "$SECRET_KEY" ] || {
+    echo "Cannot run smoke tests: no secret key"
+    exit 1
+}
+
+source "$SRCDIR/bin/circle-env"
+
+# Provisioning from image typically take 90 seconds, 
+# but if we are creating a GCP image, it can take more than 10 minutes:
+wait_for 900 "$TEST_VMS_PROV_AND_CONF_LOCK_FILE"
+
+# Upload built binaries to testing VMs:
+cd "$SRCDIR/test" # Ensures we generate Terraform state files in the right folder, for later use by integration tests.
+./run-integration-tests.sh setup
+echo "OK" >"$TEST_VMS_READY_LOCK_FILE"
+echo "Test VMs now ready. $(date)."

original/bin/circle-test-smoke

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+source "$(dirname "$0")/wait_for.sh"
+
+[ -n "$SECRET_KEY" ] || {
+    echo "Cannot run smoke tests: no secret key"
+    exit 1
+}
+
+source "$SRCDIR/bin/circle-env"
+
+# Provisioning from image typically take 90 seconds, 
+# but if we are creating a GCP image, it can take more than 10 minutes:
+wait_for 900 "$TEST_VMS_READY_LOCK_FILE"
+
+# Run integration tests:
+export COVERAGE=true
+export WEAVE_NET_SANITY_CHECKS_FILES="$CIRCLE_ARTIFACTS/weave_net_sanity_check_*.log"
+cd "$SRCDIR/test" # Ensures we generate code coverage files in the right folder, and use the Terraform state of previously provisionned VMs.
+./run-integration-tests.sh test