Martynas Pumputis
01bfa602ad
- "noDNS" controls whether upon ContainerStarted event a container should be registered within the Weave DNS. - "isPluginV2" will be used to determine a path to host's /proc.
63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
package plugin
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import (
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"fmt"
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weaveapi "github.com/weaveworks/weave/api"
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"github.com/weaveworks/weave/common/docker"
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weavenet "github.com/weaveworks/weave/net"
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)
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const (
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WeaveDomain = "weave.local"
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)
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type watcher struct {
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client *docker.Client
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weave *weaveapi.Client
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driver *driver
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}
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type Watcher interface {
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}
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func NewWatcher(client *docker.Client, weave *weaveapi.Client, driver *driver) (Watcher, error) {
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w := &watcher{client: client, weave: weave, driver: driver}
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return w, client.AddObserver(w)
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}
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func (w *watcher) ContainerStarted(id string) {
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w.driver.debug("ContainerStarted", "%s", id)
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info, err := w.client.InspectContainer(id)
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if err != nil {
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w.driver.warn("ContainerStarted", "error inspecting container %s: %s", id, err)
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return
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}
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// check that it's on our network
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for _, net := range info.NetworkSettings.Networks {
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network, err := w.driver.findNetworkInfo(net.NetworkID)
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if err != nil {
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w.driver.warn("ContainerStarted", "unable to find network %s info: %s", net.NetworkID, err)
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continue
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}
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if network.isOurs {
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if !w.driver.noDNS {
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fqdn := fmt.Sprintf("%s.%s", info.Config.Hostname, info.Config.Domainname)
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if err := w.weave.RegisterWithDNS(id, fqdn, net.IPAddress); err != nil {
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w.driver.warn("ContainerStarted", "unable to register %s with weaveDNS: %s", id, err)
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}
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}
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if _, err := weavenet.WithNetNSByPid(info.State.Pid, "configure-arp", weavenet.VethName); err != nil {
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w.driver.warn("ContainerStarted", "unable to configure interfaces: %s", err)
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}
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}
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}
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}
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func (w *watcher) ContainerDied(id string) {
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// don't need to do this as WeaveDNS removes names on container died anyway
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// (note by the time we get this event we can't see the EndpointID)
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}
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func (w *watcher) ContainerDestroyed(id string) {}
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