Example #1
0
func (l *LocalCluster) createNetwork(ctx context.Context) {
	l.panicOnStop()

	l.networkName = fmt.Sprintf("%s-%s", networkPrefix, l.clusterID)
	log.Infof(ctx, "creating docker network with name: %s", l.networkName)
	net, err := l.client.NetworkInspect(ctx, l.networkName)
	if err == nil {
		// We need to destroy the network and any running containers inside of it.
		for containerID := range net.Containers {
			// This call could fail if the container terminated on its own after we call
			// NetworkInspect, but the likelihood of this seems low. If this line creates
			// a lot of panics we should do more careful error checking.
			maybePanic(l.client.ContainerKill(ctx, containerID, "9"))
		}
		maybePanic(l.client.NetworkRemove(ctx, l.networkName))
	} else if !client.IsErrNotFound(err) {
		panic(err)
	}

	resp, err := l.client.NetworkCreate(ctx, l.networkName, types.NetworkCreate{
		Driver: "bridge",
		// Docker gets very confused if two networks have the same name.
		CheckDuplicate: true,
	})
	maybePanic(err)
	if resp.Warning != "" {
		log.Warningf(ctx, "creating network: %s", resp.Warning)
	}
	l.networkID = resp.ID
}
Example #2
0
func inspectAll(ctx context.Context, dockerCli *command.DockerCli, getSize bool, typeConstraint string) inspect.GetRefFunc {
	var inspectAutodetect = []struct {
		ObjectType      string
		IsSizeSupported bool
		ObjectInspector func(string) (interface{}, []byte, error)
	}{
		{"container", true, inspectContainers(ctx, dockerCli, getSize)},
		{"image", false, inspectImages(ctx, dockerCli)},
		{"network", false, inspectNetwork(ctx, dockerCli)},
		{"volume", false, inspectVolume(ctx, dockerCli)},
		{"service", false, inspectService(ctx, dockerCli)},
		{"task", false, inspectTasks(ctx, dockerCli)},
		{"node", false, inspectNode(ctx, dockerCli)},
		{"plugin", false, inspectPlugin(ctx, dockerCli)},
	}

	isErrNotSwarmManager := func(err error) bool {
		return strings.Contains(err.Error(), "This node is not a swarm manager")
	}

	return func(ref string) (interface{}, []byte, error) {
		for _, inspectData := range inspectAutodetect {
			if typeConstraint != "" && inspectData.ObjectType != typeConstraint {
				continue
			}
			v, raw, err := inspectData.ObjectInspector(ref)
			if err != nil {
				if typeConstraint == "" && (apiclient.IsErrNotFound(err) || isErrNotSwarmManager(err)) {
					continue
				}
				return v, raw, err
			}
			if getSize && !inspectData.IsSizeSupported {
				fmt.Fprintf(dockerCli.Err(), "WARNING: --size ignored for %s\n", inspectData.ObjectType)
			}
			return v, raw, err
		}
		return nil, nil, fmt.Errorf("Error: No such object: %s", ref)
	}
}
Example #3
0
func inspectAll(ctx context.Context, dockerCli *command.DockerCli, getSize bool, typeConstraint string) inspect.GetRefFunc {
	var inspectAutodetect = []struct {
		objectType      string
		isSizeSupported bool
		isSwarmObject   bool
		objectInspector func(string) (interface{}, []byte, error)
	}{
		{
			objectType:      "container",
			isSizeSupported: true,
			objectInspector: inspectContainers(ctx, dockerCli, getSize),
		},
		{
			objectType:      "image",
			objectInspector: inspectImages(ctx, dockerCli),
		},
		{
			objectType:      "network",
			objectInspector: inspectNetwork(ctx, dockerCli),
		},
		{
			objectType:      "volume",
			objectInspector: inspectVolume(ctx, dockerCli),
		},
		{
			objectType:      "service",
			isSwarmObject:   true,
			objectInspector: inspectService(ctx, dockerCli),
		},
		{
			objectType:      "task",
			isSwarmObject:   true,
			objectInspector: inspectTasks(ctx, dockerCli),
		},
		{
			objectType:      "node",
			isSwarmObject:   true,
			objectInspector: inspectNode(ctx, dockerCli),
		},
		{
			objectType:      "plugin",
			objectInspector: inspectPlugin(ctx, dockerCli),
		},
	}

	// isSwarmManager does an Info API call to verify that the daemon is
	// a swarm manager.
	isSwarmManager := func() bool {
		info, err := dockerCli.Client().Info(ctx)
		if err != nil {
			fmt.Fprintln(dockerCli.Err(), err)
			return false
		}
		return info.Swarm.ControlAvailable
	}

	isErrNotSupported := func(err error) bool {
		return strings.Contains(err.Error(), "not supported")
	}

	return func(ref string) (interface{}, []byte, error) {
		const (
			swarmSupportUnknown = iota
			swarmSupported
			swarmUnsupported
		)

		isSwarmSupported := swarmSupportUnknown

		for _, inspectData := range inspectAutodetect {
			if typeConstraint != "" && inspectData.objectType != typeConstraint {
				continue
			}
			if typeConstraint == "" && inspectData.isSwarmObject {
				if isSwarmSupported == swarmSupportUnknown {
					if isSwarmManager() {
						isSwarmSupported = swarmSupported
					} else {
						isSwarmSupported = swarmUnsupported
					}
				}
				if isSwarmSupported == swarmUnsupported {
					continue
				}
			}
			v, raw, err := inspectData.objectInspector(ref)
			if err != nil {
				if typeConstraint == "" && (apiclient.IsErrNotFound(err) || isErrNotSupported(err)) {
					continue
				}
				return v, raw, err
			}
			if getSize && !inspectData.isSizeSupported {
				fmt.Fprintf(dockerCli.Err(), "WARNING: --size ignored for %s\n", inspectData.objectType)
			}
			return v, raw, err
		}
		return nil, nil, fmt.Errorf("Error: No such object: %s", ref)
	}
}