Michael Bridgen
b114735a41
* Put prefixes (including msg IDs) in front of log messages to distinguish them * Failed lookups get logged under Info as per issue #311 * More accurate messages as per issue #311
45 lines
965 B
Go
45 lines
965 B
Go
package nameserver
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import (
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"github.com/fsouza/go-dockerclient"
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. "github.com/zettio/weave/common"
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)
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func checkError(err error, apiPath string) {
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if err != nil {
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Error.Fatalf("[updater] Unable to connect to Docker API on %s: %s",
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apiPath, err)
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}
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}
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func StartUpdater(apiPath string, zone Zone) error {
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client, err := docker.NewClient(apiPath)
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checkError(err, apiPath)
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env, err := client.Version()
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checkError(err, apiPath)
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events := make(chan *docker.APIEvents)
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err = client.AddEventListener(events)
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checkError(err, apiPath)
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Info.Printf("[updater] Using Docker API on %s: %v", apiPath, env)
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go func() {
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for event := range events {
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handleEvent(zone, event, client)
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}
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}()
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return nil
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}
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func handleEvent(zone Zone, event *docker.APIEvents, client *docker.Client) error {
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switch event.Status {
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case "die":
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id := event.ID
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Info.Printf("[updater] Container %s down. Removing records", id)
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zone.DeleteRecordsFor(id)
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}
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return nil
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}
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