/***************************
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
}
// CreateNetwork creates a network with the given name, driver and other optional parameters
func (daemon *Daemon) CreateNetwork(name, driver string, ipam network.IPAM, netOption map[string]string, labels map[string]string, internal bool, enableIPv6 bool) (libnetwork.Network, error) {
c := daemon.netController
if driver == "" {
driver = c.Config().Daemon.DefaultDriver
}
v4Conf, v6Conf, err := getIpamConfig(ipam.Config)
if err != nil {
return nil, err
}
nwOptions := []libnetwork.NetworkOption{
libnetwork.NetworkOptionIpam(ipam.Driver, "", v4Conf, v6Conf, ipam.Options),
libnetwork.NetworkOptionEnableIPv6(enableIPv6),
libnetwork.NetworkOptionDriverOpts(netOption),
libnetwork.NetworkOptionLabels(labels),
}
if internal {
nwOptions = append(nwOptions, libnetwork.NetworkOptionInternalNetwork())
}
n, err := c.NewNetwork(driver, name, nwOptions...)
if err != nil {
return nil, err
}
daemon.LogNetworkEvent(n, "create")
return n, nil
}
// CreateNetwork creates a network with the given name, driver and other optional parameters
func (daemon *Daemon) CreateNetwork(create types.NetworkCreateRequest) (*types.NetworkCreateResponse, error) {
if runconfig.IsPreDefinedNetwork(create.Name) {
err := fmt.Errorf("%s is a pre-defined network and cannot be created", create.Name)
return nil, errors.NewErrorWithStatusCode(err, http.StatusForbidden)
}
var warning string
nw, err := daemon.GetNetworkByName(create.Name)
if err != nil {
if _, ok := err.(libnetwork.ErrNoSuchNetwork); !ok {
return nil, err
}
}
if nw != nil {
if create.CheckDuplicate {
return nil, libnetwork.NetworkNameError(create.Name)
}
warning = fmt.Sprintf("Network with name %s (id : %s) already exists", nw.Name(), nw.ID())
}
c := daemon.netController
driver := create.Driver
if driver == "" {
driver = c.Config().Daemon.DefaultDriver
}
ipam := create.IPAM
v4Conf, v6Conf, err := getIpamConfig(ipam.Config)
if err != nil {
return nil, err
}
nwOptions := []libnetwork.NetworkOption{
libnetwork.NetworkOptionIpam(ipam.Driver, "", v4Conf, v6Conf, ipam.Options),
libnetwork.NetworkOptionEnableIPv6(create.EnableIPv6),
libnetwork.NetworkOptionDriverOpts(create.Options),
libnetwork.NetworkOptionLabels(create.Labels),
}
if create.Internal {
nwOptions = append(nwOptions, libnetwork.NetworkOptionInternalNetwork())
}
n, err := c.NewNetwork(driver, create.Name, nwOptions...)
if err != nil {
return nil, err
}
daemon.LogNetworkEvent(n, "create")
return &types.NetworkCreateResponse{
ID: n.ID(),
Warning: warning,
}, nil
}
// CreateNetwork creates a network with the given name, driver and other optional parameters
func (daemon *Daemon) CreateNetwork(name, driver string, ipam network.IPAM, options map[string]string) (libnetwork.Network, error) {
c := daemon.netController
if driver == "" {
driver = c.Config().Daemon.DefaultDriver
}
nwOptions := []libnetwork.NetworkOption{}
v4Conf, v6Conf, err := getIpamConfig(ipam.Config)
if err != nil {
return nil, err
}
nwOptions = append(nwOptions, libnetwork.NetworkOptionIpam(ipam.Driver, "", v4Conf, v6Conf))
nwOptions = append(nwOptions, libnetwork.NetworkOptionDriverOpts(options))
return c.NewNetwork(driver, name, nwOptions...)
}
/***************************
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 n, err := controller.NetworkByName("bridge"); err == nil {
if err = n.Delete(); err != nil {
return fmt.Errorf("could not delete the default bridge network: %v", err)
}
}
bridgeName := bridge.DefaultBridgeName
if config.bridgeConfig.Iface != "" {
bridgeName = config.bridgeConfig.Iface
}
netOption := map[string]string{
bridge.BridgeName: bridgeName,
bridge.DefaultBridge: strconv.FormatBool(true),
netlabel.DriverMTU: strconv.Itoa(config.Mtu),
bridge.EnableICC: strconv.FormatBool(config.bridgeConfig.InterContainerCommunication),
}
// --ip processing
if config.bridgeConfig.DefaultIP != nil {
netOption[bridge.DefaultBindingIP] = config.bridgeConfig.DefaultIP.String()
}
var ipamV4Conf *libnetwork.IpamConf
ipamV4Conf = &libnetwork.IpamConf{AuxAddresses: make(map[string]string)}
nwList, _, err := netutils.ElectInterfaceAddresses(bridgeName)
if err != nil {
return errors.Wrap(err, "list bridge addresses failed")
}
nw := nwList[0]
if len(nwList) > 1 && config.bridgeConfig.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.bridgeConfig.FixedCIDR)
if err != nil {
return errors.Wrap(err, "parse CIDR failed")
}
// Iterate through in case there are multiple addresses for the bridge
for _, entry := range nwList {
if fCIDR.Contains(entry.IP) {
nw = entry
break
}
}
}
ipamV4Conf.PreferredPool = lntypes.GetIPNetCanonical(nw).String()
hip, _ := lntypes.GetHostPartIP(nw.IP, nw.Mask)
if hip.IsGlobalUnicast() {
ipamV4Conf.Gateway = nw.IP.String()
}
if config.bridgeConfig.IP != "" {
ipamV4Conf.PreferredPool = config.bridgeConfig.IP
ip, _, err := net.ParseCIDR(config.bridgeConfig.IP)
if err != nil {
return err
}
ipamV4Conf.Gateway = ip.String()
} else if bridgeName == bridge.DefaultBridgeName && ipamV4Conf.PreferredPool != "" {
logrus.Infof("Default bridge (%s) is assigned with an IP address %s. Daemon option --bip can be used to set a preferred IP address", bridgeName, ipamV4Conf.PreferredPool)
}
if config.bridgeConfig.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.bridgeConfig.FixedCIDR)
if err != nil {
return err
}
ipamV4Conf.SubPool = fCIDR.String()
}
if config.bridgeConfig.DefaultGatewayIPv4 != nil {
ipamV4Conf.AuxAddresses["DefaultGatewayIPv4"] = config.bridgeConfig.DefaultGatewayIPv4.String()
}
v4Conf := []*libnetwork.IpamConf{ipamV4Conf}
v6Conf := []*libnetwork.IpamConf{}
// Initialize default network on "bridge" with the same name
_, err = controller.NewNetwork("bridge", "bridge", "",
libnetwork.NetworkOptionDriverOpts(netOption),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
libnetwork.NetworkOptionDeferIPv6Alloc(false))
if err != nil {
return fmt.Errorf("Error creating default 'bridge' network: %v", err)
}
return nil
}
func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
bridgeName := bridge.DefaultBridgeName
if config.bridgeConfig.Iface != "" {
bridgeName = config.bridgeConfig.Iface
}
netOption := map[string]string{
bridge.BridgeName: bridgeName,
bridge.DefaultBridge: strconv.FormatBool(true),
netlabel.DriverMTU: strconv.Itoa(config.Mtu),
bridge.EnableIPMasquerade: strconv.FormatBool(config.bridgeConfig.EnableIPMasq),
bridge.EnableICC: strconv.FormatBool(config.bridgeConfig.InterContainerCommunication),
}
// --ip processing
if config.bridgeConfig.DefaultIP != nil {
netOption[bridge.DefaultBindingIP] = config.bridgeConfig.DefaultIP.String()
}
var (
ipamV4Conf *libnetwork.IpamConf
ipamV6Conf *libnetwork.IpamConf
)
ipamV4Conf = &libnetwork.IpamConf{AuxAddresses: make(map[string]string)}
nwList, nw6List, err := netutils.ElectInterfaceAddresses(bridgeName)
if err != nil {
return errors.Wrap(err, "list bridge addresses failed")
}
nw := nwList[0]
if len(nwList) > 1 && config.bridgeConfig.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.bridgeConfig.FixedCIDR)
if err != nil {
return errors.Wrap(err, "parse CIDR failed")
}
// Iterate through in case there are multiple addresses for the bridge
for _, entry := range nwList {
if fCIDR.Contains(entry.IP) {
nw = entry
break
}
}
}
ipamV4Conf.PreferredPool = lntypes.GetIPNetCanonical(nw).String()
hip, _ := lntypes.GetHostPartIP(nw.IP, nw.Mask)
if hip.IsGlobalUnicast() {
ipamV4Conf.Gateway = nw.IP.String()
}
if config.bridgeConfig.IP != "" {
ipamV4Conf.PreferredPool = config.bridgeConfig.IP
ip, _, err := net.ParseCIDR(config.bridgeConfig.IP)
if err != nil {
return err
}
ipamV4Conf.Gateway = ip.String()
} else if bridgeName == bridge.DefaultBridgeName && ipamV4Conf.PreferredPool != "" {
logrus.Infof("Default bridge (%s) is assigned with an IP address %s. Daemon option --bip can be used to set a preferred IP address", bridgeName, ipamV4Conf.PreferredPool)
}
if config.bridgeConfig.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.bridgeConfig.FixedCIDR)
if err != nil {
return err
}
ipamV4Conf.SubPool = fCIDR.String()
}
if config.bridgeConfig.DefaultGatewayIPv4 != nil {
ipamV4Conf.AuxAddresses["DefaultGatewayIPv4"] = config.bridgeConfig.DefaultGatewayIPv4.String()
}
var deferIPv6Alloc bool
if config.bridgeConfig.FixedCIDRv6 != "" {
_, fCIDRv6, err := net.ParseCIDR(config.bridgeConfig.FixedCIDRv6)
if err != nil {
return err
}
// In case user has specified the daemon flag --fixed-cidr-v6 and the passed network has
// at least 48 host bits, we need to guarantee the current behavior where the containers'
// IPv6 addresses will be constructed based on the containers' interface MAC address.
// We do so by telling libnetwork to defer the IPv6 address allocation for the endpoints
// on this network until after the driver has created the endpoint and returned the
// constructed address. Libnetwork will then reserve this address with the ipam driver.
ones, _ := fCIDRv6.Mask.Size()
deferIPv6Alloc = ones <= 80
if ipamV6Conf == nil {
ipamV6Conf = &libnetwork.IpamConf{AuxAddresses: make(map[string]string)}
}
ipamV6Conf.PreferredPool = fCIDRv6.String()
// In case the --fixed-cidr-v6 is specified and the current docker0 bridge IPv6
// address belongs to the same network, we need to inform libnetwork about it, so
// that it can be reserved with IPAM and it will not be given away to somebody else
for _, nw6 := range nw6List {
if fCIDRv6.Contains(nw6.IP) {
ipamV6Conf.Gateway = nw6.IP.String()
break
}
}
}
if config.bridgeConfig.DefaultGatewayIPv6 != nil {
if ipamV6Conf == nil {
ipamV6Conf = &libnetwork.IpamConf{AuxAddresses: make(map[string]string)}
}
ipamV6Conf.AuxAddresses["DefaultGatewayIPv6"] = config.bridgeConfig.DefaultGatewayIPv6.String()
}
v4Conf := []*libnetwork.IpamConf{ipamV4Conf}
v6Conf := []*libnetwork.IpamConf{}
if ipamV6Conf != nil {
v6Conf = append(v6Conf, ipamV6Conf)
}
// Initialize default network on "bridge" with the same name
_, err = controller.NewNetwork("bridge", "bridge", "",
libnetwork.NetworkOptionEnableIPv6(config.bridgeConfig.EnableIPv6),
libnetwork.NetworkOptionDriverOpts(netOption),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
libnetwork.NetworkOptionDeferIPv6Alloc(deferIPv6Alloc))
if err != nil {
return fmt.Errorf("Error creating default \"bridge\" network: %v", err)
}
return nil
}
func (daemon *Daemon) createNetwork(create types.NetworkCreateRequest, id string, agent bool) (*types.NetworkCreateResponse, error) {
// If there is a pending ingress network creation wait here
// since ingress network creation can happen via node download
// from manager or task download.
if isIngressNetwork(create.Name) {
defer ingressWait()()
}
if runconfig.IsPreDefinedNetwork(create.Name) && !agent {
err := fmt.Errorf("%s is a pre-defined network and cannot be created", create.Name)
return nil, errors.NewRequestForbiddenError(err)
}
var warning string
nw, err := daemon.GetNetworkByName(create.Name)
if err != nil {
if _, ok := err.(libnetwork.ErrNoSuchNetwork); !ok {
return nil, err
}
}
if nw != nil {
if create.CheckDuplicate {
return nil, libnetwork.NetworkNameError(create.Name)
}
warning = fmt.Sprintf("Network with name %s (id : %s) already exists", nw.Name(), nw.ID())
}
c := daemon.netController
driver := create.Driver
if driver == "" {
driver = c.Config().Daemon.DefaultDriver
}
nwOptions := []libnetwork.NetworkOption{
libnetwork.NetworkOptionEnableIPv6(create.EnableIPv6),
libnetwork.NetworkOptionDriverOpts(create.Options),
libnetwork.NetworkOptionLabels(create.Labels),
}
if create.IPAM != nil {
ipam := create.IPAM
v4Conf, v6Conf, err := getIpamConfig(ipam.Config)
if err != nil {
return nil, err
}
nwOptions = append(nwOptions, libnetwork.NetworkOptionIpam(ipam.Driver, "", v4Conf, v6Conf, ipam.Options))
}
if create.Internal {
nwOptions = append(nwOptions, libnetwork.NetworkOptionInternalNetwork())
}
if agent {
nwOptions = append(nwOptions, libnetwork.NetworkOptionDynamic())
nwOptions = append(nwOptions, libnetwork.NetworkOptionPersist(false))
}
if isIngressNetwork(create.Name) {
nwOptions = append(nwOptions, libnetwork.NetworkOptionIngress())
}
n, err := c.NewNetwork(driver, create.Name, id, nwOptions...)
if err != nil {
return nil, err
}
daemon.LogNetworkEvent(n, "create")
return &types.NetworkCreateResponse{
ID: n.ID(),
Warning: warning,
}, nil
}
