Paul Bellamy
46bdd8c67d
Pass `-e WEAVE_CIDR=` to your container to use IPAM. If IPAM is not enabled on the weave router, the container will be booted without weave networking. I'm not crazy about adding *another* undocumented weave cli command (ipam-cidr), but it saves the proxy messing around finding container IPs.
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package proxy
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"os/exec"
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"regexp"
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"strings"
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"github.com/fsouza/go-dockerclient"
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. "github.com/weaveworks/weave/common"
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)
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var (
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containerIDRegexp = regexp.MustCompile("^/v[0-9\\.]*/containers/([^/]*)/.*")
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weaveWaitEntrypoint = []string{"/home/weavewait/weavewait"}
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)
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func callWeave(args ...string) ([]byte, error) {
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args = append([]string{"--local"}, args...)
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Debug.Print("Calling weave", args)
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cmd := exec.Command("./weave", args...)
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cmd.Env = []string{"PROCFS=/hostproc", "PATH=/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"}
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out, err := cmd.CombinedOutput()
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return out, err
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}
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func weaveCIDRsFromConfig(config *docker.Config) ([]string, bool) {
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for _, e := range config.Env {
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if strings.HasPrefix(e, "WEAVE_CIDR=") {
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return strings.Fields(e[11:]), true
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}
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}
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return nil, false
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}
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func marshalRequestBody(r *http.Request, body interface{}) error {
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newBody, err := json.Marshal(body)
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if err != nil {
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return err
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}
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r.Body = ioutil.NopCloser(bytes.NewReader(newBody))
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r.ContentLength = int64(len(newBody))
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return nil
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}
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func inspectContainerInPath(client *docker.Client, path string) (*docker.Container, error) {
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subs := containerIDRegexp.FindStringSubmatch(path)
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if subs == nil {
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err := fmt.Errorf("No container id found in request with path %s", path)
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Warning.Println(err)
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return nil, err
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}
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containerID := subs[1]
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container, err := client.InspectContainer(containerID)
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if err != nil {
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Warning.Printf("Error inspecting container %s: %v", containerID, err)
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}
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return container, err
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}
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