Golang libnetwork.NetworkController类代码示例

func procGetNetworks(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var list []*networkResource

	// Look for query filters and validate
	name, queryByName := vars[urlNwName]
	shortID, queryByPid := vars[urlNwPID]
	if queryByName && queryByPid {
		return nil, &badQueryResponse
	}

	if queryByName {
		if nw, errRsp := findNetwork(c, name, byName); errRsp.isOK() {
			list = append(list, buildNetworkResource(nw))
		}
	} else if queryByPid {
		// Return all the prefix-matching networks
		l := func(nw libnetwork.Network) bool {
			if strings.HasPrefix(nw.ID(), shortID) {
				list = append(list, buildNetworkResource(nw))
			}
			return false
		}
		c.WalkNetworks(l)
	} else {
		for _, nw := range c.Networks() {
			list = append(list, buildNetworkResource(nw))
		}
	}

	return list, &successResponse
}

/***************************
 NetworkController interface
****************************/
func procCreateNetwork(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var create networkCreate

	err := json.Unmarshal(body, &create)
	if err != nil {
		return "", &responseStatus{Status: "Invalid body: " + err.Error(), StatusCode: http.StatusBadRequest}
	}
	processCreateDefaults(c, &create)

	options := []libnetwork.NetworkOption{}
	if len(create.NetworkOpts) > 0 {
		if _, ok := create.NetworkOpts[netlabel.Internal]; ok {
			options = append(options, libnetwork.NetworkOptionInternalNetwork())
		}
	}
	if len(create.DriverOpts) > 0 {
		options = append(options, libnetwork.NetworkOptionDriverOpts(create.DriverOpts))
	}
	nw, err := c.NewNetwork(create.NetworkType, create.Name, options...)
	if err != nil {
		return "", convertNetworkError(err)
	}

	return nw.ID(), &createdResponse
}

func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
	if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
		return nil
	}

	netOption := map[string]string{
		winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
	}

	ipamV4Conf := libnetwork.IpamConf{}
	if config.bridgeConfig.FixedCIDR == "" {
		ipamV4Conf.PreferredPool = defaultNetworkSpace
	} else {
		ipamV4Conf.PreferredPool = config.bridgeConfig.FixedCIDR
	}

	v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
	v6Conf := []*libnetwork.IpamConf{}

	_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(),
		libnetwork.NetworkOptionGeneric(options.Generic{
			netlabel.GenericData: netOption,
		}),
		libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
	)

	if err != nil {
		return fmt.Errorf("Error creating default network: %v", err)
	}
	return nil
}

func procGetSandboxes(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var list []*sandboxResource

	cnd := getQueryCondition(vars)
	c.WalkSandboxes(sandboxWalker(cnd, &list))

	return list, &successResponse
}

func procGetNetworks(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var list []*networkResource
	for _, nw := range c.Networks() {
		nwr := buildNetworkResource(nw)
		list = append(list, nwr)
	}
	return list, &successResponse
}

func handleSignals(controller libnetwork.NetworkController) {
	c := make(chan os.Signal, 1)
	signals := []os.Signal{os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT}
	signal.Notify(c, signals...)
	go func() {
		for _ = range c {
			controller.Stop()
			os.Exit(0)
		}
	}()
}

func createDefaultNetwork(c libnetwork.NetworkController) {
	nw := c.Config().Daemon.DefaultNetwork
	d := c.Config().Daemon.DefaultDriver
	createOptions := []libnetwork.NetworkOption{}
	genericOption := options.Generic{}

	if nw != "" && d != "" {
		// Bridge driver is special due to legacy reasons
		if d == "bridge" {
			genericOption[netlabel.GenericData] = map[string]string{
				"BridgeName":    "docker0",
				"DefaultBridge": "true",
			}
			createOptions = append(createOptions,
				libnetwork.NetworkOptionGeneric(genericOption),
				ipamOption(nw))
		}

		if n, err := c.NetworkByName(nw); err == nil {
			logrus.Debugf("Default network %s already present. Deleting it", nw)
			if err = n.Delete(); err != nil {
				logrus.Debugf("Network could not be deleted: %v", err)
				return
			}
		}

		_, err := c.NewNetwork(d, nw, createOptions...)
		if err != nil {
			logrus.Errorf("Error creating default network : %s : %v", nw, err)
		}
	}
}

func procCreateSandbox(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var create sandboxCreate

	err := json.Unmarshal(body, &create)
	if err != nil {
		return "", &responseStatus{Status: "Invalid body: " + err.Error(), StatusCode: http.StatusBadRequest}
	}

	sb, err := c.NewSandbox(create.ContainerID, create.parseOptions()...)
	if err != nil {
		return "", convertNetworkError(err)
	}

	return sb.ID(), &createdResponse
}

/***************************
 NetworkController interface
****************************/
func procCreateNetwork(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var create networkCreate

	err := json.Unmarshal(body, &create)
	if err != nil {
		return "", &responseStatus{Status: "Invalid body: " + err.Error(), StatusCode: http.StatusBadRequest}
	}

	nw, err := c.NewNetwork(create.NetworkType, create.Name, nil)
	if err != nil {
		return "", convertNetworkError(err)
	}

	return nw.ID(), &createdResponse
}

func createNetwork(controller libnetwork.NetworkController, dnet string, driver string) (libnetwork.Network, error) {
	createOptions := []libnetwork.NetworkOption{}
	genericOption := options.Generic{}

	// Bridge driver is special due to legacy reasons
	if runconfig.NetworkMode(driver).IsBridge() {
		genericOption[netlabel.GenericData] = map[string]string{
			bridge.BridgeName: dnet,
		}
		networkOption := libnetwork.NetworkOptionGeneric(genericOption)
		createOptions = append(createOptions, networkOption)
	}

	return controller.NewNetwork(driver, dnet, createOptions...)
}

/***************************
 NetworkController interface
****************************/
func procCreateNetwork(c libnetwork.NetworkController, vars map[string]string, body []byte) (interface{}, *responseStatus) {
	var create networkCreate

	err := json.Unmarshal(body, &create)
	if err != nil {
		return nil, &responseStatus{Status: "Invalid body: " + err.Error(), StatusCode: http.StatusBadRequest}
	}
	processCreateDefaults(c, &create)

	options := []libnetwork.NetworkOption{}
	if val, ok := create.NetworkOpts[netlabel.Internal]; ok {
		internal, err := strconv.ParseBool(val)
		if err != nil {
			return nil, &responseStatus{Status: err.Error(), StatusCode: http.StatusBadRequest}
		}
		if internal {
			options = append(options, libnetwork.NetworkOptionInternalNetwork())
		}
	}
	if val, ok := create.NetworkOpts[netlabel.EnableIPv6]; ok {
		enableIPv6, err := strconv.ParseBool(val)
		if err != nil {
			return nil, &responseStatus{Status: err.Error(), StatusCode: http.StatusBadRequest}
		}
		options = append(options, libnetwork.NetworkOptionEnableIPv6(enableIPv6))
	}
	if len(create.DriverOpts) > 0 {
		options = append(options, libnetwork.NetworkOptionDriverOpts(create.DriverOpts))
	}

	if len(create.IPv4Conf) > 0 {
		ipamV4Conf := &libnetwork.IpamConf{
			PreferredPool: create.IPv4Conf[0].PreferredPool,
			SubPool:       create.IPv4Conf[0].SubPool,
		}

		options = append(options, libnetwork.NetworkOptionIpam("default", "", []*libnetwork.IpamConf{ipamV4Conf}, nil, nil))
	}

	nw, err := c.NewNetwork(create.NetworkType, create.Name, create.ID, options...)
	if err != nil {
		return nil, convertNetworkError(err)
	}

	return nw.ID(), &createdResponse
}

func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
	if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
		return nil
	}

	netOption := map[string]string{
		winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
	}

	var ipamOption libnetwork.NetworkOption
	var subnetPrefix string

	if config.bridgeConfig.FixedCIDR != "" {
		subnetPrefix = config.bridgeConfig.FixedCIDR
	} else {
		// TP5 doesn't support properly detecting subnet
		osv := system.GetOSVersion()
		if osv.Build < 14360 {
			subnetPrefix = defaultNetworkSpace
		}
	}

	if subnetPrefix != "" {
		ipamV4Conf := libnetwork.IpamConf{}
		ipamV4Conf.PreferredPool = subnetPrefix
		v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
		v6Conf := []*libnetwork.IpamConf{}
		ipamOption = libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil)
	}

	_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(), "",
		libnetwork.NetworkOptionGeneric(options.Generic{
			netlabel.GenericData: netOption,
		}),
		ipamOption,
	)

	if err != nil {
		return fmt.Errorf("Error creating default network: %v", err)
	}

	return nil
}

func findSandbox(c libnetwork.NetworkController, s string, by int) (libnetwork.Sandbox, *responseStatus) {
	var (
		sb  libnetwork.Sandbox
		err error
	)

	switch by {
	case byID:
		sb, err = c.SandboxByID(s)
	default:
		panic(fmt.Sprintf("unexpected selector for sandbox search: %d", by))
	}
	if err != nil {
		if _, ok := err.(types.NotFoundError); ok {
			return nil, &responseStatus{Status: "Resource not found: Sandbox", StatusCode: http.StatusNotFound}
		}
		return nil, &responseStatus{Status: err.Error(), StatusCode: http.StatusBadRequest}
	}
	return sb, &successResponse
}

func findNetwork(c libnetwork.NetworkController, s string, by int) (libnetwork.Network, *responseStatus) {
	var (
		nw  libnetwork.Network
		err error
	)
	switch by {
	case byID:
		nw, err = c.NetworkByID(s)
	case byName:
		nw, err = c.NetworkByName(s)
	default:
		panic(fmt.Sprintf("unexpected selector for network search: %d", by))
	}
	if err != nil {
		if _, ok := err.(libnetwork.ErrNoSuchNetwork); ok {
			return nil, &responseStatus{Status: "Resource not found: Network", StatusCode: http.StatusNotFound}
		}
		return nil, &responseStatus{Status: err.Error(), StatusCode: http.StatusBadRequest}
	}
	return nw, &successResponse
}

func findService(c libnetwork.NetworkController, svs string, svBy int) (libnetwork.Endpoint, *responseStatus) {
	for _, nw := range c.Networks() {
		var (
			ep  libnetwork.Endpoint
			err error
		)
		switch svBy {
		case byID:
			ep, err = nw.EndpointByID(svs)
		case byName:
			ep, err = nw.EndpointByName(svs)
		default:
			panic(fmt.Sprintf("unexpected selector for service search: %d", svBy))
		}
		if err == nil {
			return ep, &successResponse
		} else if _, ok := err.(types.NotFoundError); !ok {
			return nil, convertNetworkError(err)
		}
	}
	return nil, &responseStatus{Status: "Service not found", StatusCode: http.StatusNotFound}
}