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.
49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
package proxy
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import (
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"net/http"
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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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type startContainerInterceptor struct {
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client *docker.Client
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withDNS bool
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}
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func (i *startContainerInterceptor) InterceptRequest(r *http.Request) error {
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return nil
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}
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func (i *startContainerInterceptor) InterceptResponse(r *http.Response) error {
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container, err := inspectContainerInPath(i.client, r.Request.URL.Path)
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if err != nil {
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return err
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}
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cidrs, ok := weaveCIDRsFromConfig(container.Config)
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if !ok {
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Debug.Print("No Weave CIDR, ignoring")
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return nil
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}
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if len(cidrs) == 0 {
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ipamCIDR, err := callWeave("ipam-cidr", container.ID)
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if err != nil {
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Warning.Printf("Determining container %s IP via IPAM failed: %v, %v", container.ID, err, string(ipamCIDR))
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return nil
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}
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cidrs = strings.Fields(string(ipamCIDR))
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}
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Info.Printf("Attaching container %s with WEAVE_CIDR \"%s\" to weave network", container.ID, strings.Join(cidrs, " "))
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args := []string{"attach"}
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args = append(args, cidrs...)
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args = append(args, container.ID)
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if _, err := callWeave(args...); err != nil {
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Warning.Printf("Attaching container %s to weave network failed: %v", container.ID, err)
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return nil
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}
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return nil
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}
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