package libnetwork import ( "container/heap" "encoding/json" "fmt" "net" "strings" "sync" "github.com/Sirupsen/logrus" "github.com/docker/libnetwork/datastore" "github.com/docker/libnetwork/ipamapi" "github.com/docker/libnetwork/netlabel" "github.com/docker/libnetwork/options" "github.com/docker/libnetwork/types" ) // Endpoint represents a logical connection between a network and a sandbox. type Endpoint interface { // A system generated id for this endpoint. ID() string // Name returns the name of this endpoint. Name() string // Network returns the name of the network to which this endpoint is attached. Network() string // Join joins the sandbox to the endpoint and populates into the sandbox // the network resources allocated for the endpoint. Join(sandbox Sandbox, options ...EndpointOption) error // Leave detaches the network resources populated in the sandbox. Leave(sandbox Sandbox, options ...EndpointOption) error // Return certain operational data belonging to this endpoint Info() EndpointInfo // DriverInfo returns a collection of driver operational data related to this endpoint retrieved from the driver DriverInfo() (map[string]interface{}, error) // Delete and detaches this endpoint from the network. Delete(force bool) error } // EndpointOption is an option setter function type used to pass various options to Network // and Endpoint interfaces methods. The various setter functions of type EndpointOption are // provided by libnetwork, they look like Option[...](...) type EndpointOption func(ep *endpoint) type endpoint struct { name string id string network *network iface *endpointInterface joinInfo *endpointJoinInfo sandboxID string locator string exposedPorts []types.TransportPort anonymous bool disableResolution bool generic map[string]interface{} joinLeaveDone chan struct{} prefAddress net.IP prefAddressV6 net.IP ipamOptions map[string]string aliases map[string]string myAliases []string svcID string svcName string virtualIP net.IP svcAliases []string ingressPorts []*PortConfig dbIndex uint64 dbExists bool serviceEnabled bool sync.Mutex } func (ep *endpoint) MarshalJSON() ([]byte, error) { ep.Lock() defer ep.Unlock() epMap := make(map[string]interface{}) epMap["name"] = ep.name epMap["id"] = ep.id epMap["ep_iface"] = ep.iface epMap["joinInfo"] = ep.joinInfo epMap["exposed_ports"] = ep.exposedPorts if ep.generic != nil { epMap["generic"] = ep.generic } epMap["sandbox"] = ep.sandboxID epMap["locator"] = ep.locator epMap["anonymous"] = ep.anonymous epMap["disableResolution"] = ep.disableResolution epMap["myAliases"] = ep.myAliases epMap["svcName"] = ep.svcName epMap["svcID"] = ep.svcID epMap["virtualIP"] = ep.virtualIP.String() epMap["ingressPorts"] = ep.ingressPorts epMap["svcAliases"] = ep.svcAliases return json.Marshal(epMap) } func (ep *endpoint) UnmarshalJSON(b []byte) (err error) { ep.Lock() defer ep.Unlock() var epMap map[string]interface{} if err := json.Unmarshal(b, &epMap); err != nil { return err } ep.name = epMap["name"].(string) ep.id = epMap["id"].(string) ib, _ := json.Marshal(epMap["ep_iface"]) json.Unmarshal(ib, &ep.iface) jb, _ := json.Marshal(epMap["joinInfo"]) json.Unmarshal(jb, &ep.joinInfo) tb, _ := json.Marshal(epMap["exposed_ports"]) var tPorts []types.TransportPort json.Unmarshal(tb, &tPorts) ep.exposedPorts = tPorts cb, _ := json.Marshal(epMap["sandbox"]) json.Unmarshal(cb, &ep.sandboxID) if v, ok := epMap["generic"]; ok { ep.generic = v.(map[string]interface{}) if opt, ok := ep.generic[netlabel.PortMap]; ok { pblist := []types.PortBinding{} for i := 0; i < len(opt.([]interface{})); i++ { pb := types.PortBinding{} tmp := opt.([]interface{})[i].(map[string]interface{}) bytes, err := json.Marshal(tmp) if err != nil { logrus.Error(err) break } err = json.Unmarshal(bytes, &pb) if err != nil { logrus.Error(err) break } pblist = append(pblist, pb) } ep.generic[netlabel.PortMap] = pblist } if opt, ok := ep.generic[netlabel.ExposedPorts]; ok { tplist := []types.TransportPort{} for i := 0; i < len(opt.([]interface{})); i++ { tp := types.TransportPort{} tmp := opt.([]interface{})[i].(map[string]interface{}) bytes, err := json.Marshal(tmp) if err != nil { logrus.Error(err) break } err = json.Unmarshal(bytes, &tp) if err != nil { logrus.Error(err) break } tplist = append(tplist, tp) } ep.generic[netlabel.ExposedPorts] = tplist } } if v, ok := epMap["anonymous"]; ok { ep.anonymous = v.(bool) } if v, ok := epMap["disableResolution"]; ok { ep.disableResolution = v.(bool) } if l, ok := epMap["locator"]; ok { ep.locator = l.(string) } if sn, ok := epMap["svcName"]; ok { ep.svcName = sn.(string) } if si, ok := epMap["svcID"]; ok { ep.svcID = si.(string) } if vip, ok := epMap["virtualIP"]; ok { ep.virtualIP = net.ParseIP(vip.(string)) } sal, _ := json.Marshal(epMap["svcAliases"]) var svcAliases []string json.Unmarshal(sal, &svcAliases) ep.svcAliases = svcAliases pc, _ := json.Marshal(epMap["ingressPorts"]) var ingressPorts []*PortConfig json.Unmarshal(pc, &ingressPorts) ep.ingressPorts = ingressPorts ma, _ := json.Marshal(epMap["myAliases"]) var myAliases []string json.Unmarshal(ma, &myAliases) ep.myAliases = myAliases return nil } func (ep *endpoint) New() datastore.KVObject { return &endpoint{network: ep.getNetwork()} } func (ep *endpoint) CopyTo(o datastore.KVObject) error { ep.Lock() defer ep.Unlock() dstEp := o.(*endpoint) dstEp.name = ep.name dstEp.id = ep.id dstEp.sandboxID = ep.sandboxID dstEp.locator = ep.locator dstEp.dbIndex = ep.dbIndex dstEp.dbExists = ep.dbExists dstEp.anonymous = ep.anonymous dstEp.disableResolution = ep.disableResolution dstEp.svcName = ep.svcName dstEp.svcID = ep.svcID dstEp.virtualIP = ep.virtualIP dstEp.svcAliases = make([]string, len(ep.svcAliases)) copy(dstEp.svcAliases, ep.svcAliases) dstEp.ingressPorts = make([]*PortConfig, len(ep.ingressPorts)) copy(dstEp.ingressPorts, ep.ingressPorts) if ep.iface != nil { dstEp.iface = &endpointInterface{} ep.iface.CopyTo(dstEp.iface) } if ep.joinInfo != nil { dstEp.joinInfo = &endpointJoinInfo{} ep.joinInfo.CopyTo(dstEp.joinInfo) } dstEp.exposedPorts = make([]types.TransportPort, len(ep.exposedPorts)) copy(dstEp.exposedPorts, ep.exposedPorts) dstEp.myAliases = make([]string, len(ep.myAliases)) copy(dstEp.myAliases, ep.myAliases) dstEp.generic = options.Generic{} for k, v := range ep.generic { dstEp.generic[k] = v } return nil } func (ep *endpoint) ID() string { ep.Lock() defer ep.Unlock() return ep.id } func (ep *endpoint) Name() string { ep.Lock() defer ep.Unlock() return ep.name } func (ep *endpoint) MyAliases() []string { ep.Lock() defer ep.Unlock() return ep.myAliases } func (ep *endpoint) Network() string { if ep.network == nil { return "" } return ep.network.name } func (ep *endpoint) isAnonymous() bool { ep.Lock() defer ep.Unlock() return ep.anonymous } // enableService sets ep's serviceEnabled to the passed value if it's not in the // current state and returns true; false otherwise. func (ep *endpoint) enableService(state bool) bool { ep.Lock() defer ep.Unlock() if ep.serviceEnabled != state { ep.serviceEnabled = state return true } return false } func (ep *endpoint) needResolver() bool { ep.Lock() defer ep.Unlock() return !ep.disableResolution } // endpoint Key structure : endpoint/network-id/endpoint-id func (ep *endpoint) Key() []string { if ep.network == nil { return nil } return []string{datastore.EndpointKeyPrefix, ep.network.id, ep.id} } func (ep *endpoint) KeyPrefix() []string { if ep.network == nil { return nil } return []string{datastore.EndpointKeyPrefix, ep.network.id} } func (ep *endpoint) networkIDFromKey(key string) (string, error) { // endpoint Key structure : docker/libnetwork/endpoint/${network-id}/${endpoint-id} // it's an invalid key if the key doesn't have all the 5 key elements above keyElements := strings.Split(key, "/") if !strings.HasPrefix(key, datastore.Key(datastore.EndpointKeyPrefix)) || len(keyElements) < 5 { return "", fmt.Errorf("invalid endpoint key : %v", key) } // network-id is placed at index=3. pls refer to endpoint.Key() method return strings.Split(key, "/")[3], nil } func (ep *endpoint) Value() []byte { b, err := json.Marshal(ep) if err != nil { return nil } return b } func (ep *endpoint) SetValue(value []byte) error { return json.Unmarshal(value, ep) } func (ep *endpoint) Index() uint64 { ep.Lock() defer ep.Unlock() return ep.dbIndex } func (ep *endpoint) SetIndex(index uint64) { ep.Lock() defer ep.Unlock() ep.dbIndex = index ep.dbExists = true } func (ep *endpoint) Exists() bool { ep.Lock() defer ep.Unlock() return ep.dbExists } func (ep *endpoint) Skip() bool { return ep.getNetwork().Skip() } func (ep *endpoint) processOptions(options ...EndpointOption) { ep.Lock() defer ep.Unlock() for _, opt := range options { if opt != nil { opt(ep) } } } func (ep *endpoint) getNetwork() *network { ep.Lock() defer ep.Unlock() return ep.network } func (ep *endpoint) getNetworkFromStore() (*network, error) { if ep.network == nil { return nil, fmt.Errorf("invalid network object in endpoint %s", ep.Name()) } return ep.network.getController().getNetworkFromStore(ep.network.id) } func (ep *endpoint) Join(sbox Sandbox, options ...EndpointOption) error { if sbox == nil { return types.BadRequestErrorf("endpoint cannot be joined by nil container") } sb, ok := sbox.(*sandbox) if !ok { return types.BadRequestErrorf("not a valid Sandbox interface") } sb.joinLeaveStart() defer sb.joinLeaveEnd() return ep.sbJoin(sb, options...) } func (ep *endpoint) sbJoin(sb *sandbox, options ...EndpointOption) (err error) { n, err := ep.getNetworkFromStore() if err != nil { return fmt.Errorf("failed to get network from store during join: %v", err) } ep, err = n.getEndpointFromStore(ep.ID()) if err != nil { return fmt.Errorf("failed to get endpoint from store during join: %v", err) } ep.Lock() if ep.sandboxID != "" { ep.Unlock() return types.ForbiddenErrorf("another container is attached to the same network endpoint") } ep.network = n ep.sandboxID = sb.ID() ep.joinInfo = &endpointJoinInfo{} epid := ep.id ep.Unlock() defer func() { if err != nil { ep.Lock() ep.sandboxID = "" ep.Unlock() } }() nid := n.ID() ep.processOptions(options...) d, err := n.driver(true) if err != nil { return fmt.Errorf("failed to get driver during join: %v", err) } err = d.Join(nid, epid, sb.Key(), ep, sb.Labels()) if err != nil { return err } defer func() { if err != nil { if e := d.Leave(nid, epid); e != nil { logrus.Warnf("driver leave failed while rolling back join: %v", e) } } }() // Watch for service records if !n.getController().isAgent() { n.getController().watchSvcRecord(ep) } if doUpdateHostsFile(n, sb) { address := "" if ip := ep.getFirstInterfaceAddress(); ip != nil { address = ip.String() } if err = sb.updateHostsFile(address); err != nil { return err } } if err = sb.updateDNS(n.enableIPv6); err != nil { return err } // Current endpoint providing external connectivity for the sandbox extEp := sb.getGatewayEndpoint() sb.Lock() heap.Push(&sb.endpoints, ep) sb.Unlock() defer func() { if err != nil { sb.removeEndpoint(ep) } }() if err = sb.populateNetworkResources(ep); err != nil { return err } if err = n.getController().updateToStore(ep); err != nil { return err } if err = ep.addDriverInfoToCluster(); err != nil { return err } defer func() { if err != nil { if e := ep.deleteDriverInfoFromCluster(); e != nil { logrus.Errorf("Could not delete endpoint state for endpoint %s from cluster on join failure: %v", ep.Name(), e) } } }() if sb.needDefaultGW() && sb.getEndpointInGWNetwork() == nil { return sb.setupDefaultGW() } moveExtConn := sb.getGatewayEndpoint() != extEp if moveExtConn { if extEp != nil { logrus.Debugf("Revoking external connectivity on endpoint %s (%s)", extEp.Name(), extEp.ID()) extN, err := extEp.getNetworkFromStore() if err != nil { return fmt.Errorf("failed to get network from store for revoking external connectivity during join: %v", err) } extD, err := extN.driver(true) if err != nil { return fmt.Errorf("failed to get driver for revoking external connectivity during join: %v", err) } if err = extD.RevokeExternalConnectivity(extEp.network.ID(), extEp.ID()); err != nil { return types.InternalErrorf( "driver failed revoking external connectivity on endpoint %s (%s): %v", extEp.Name(), extEp.ID(), err) } defer func() { if err != nil { if e := extD.ProgramExternalConnectivity(extEp.network.ID(), extEp.ID(), sb.Labels()); e != nil { logrus.Warnf("Failed to roll-back external connectivity on endpoint %s (%s): %v", extEp.Name(), extEp.ID(), e) } } }() } if !n.internal { logrus.Debugf("Programming external connectivity on endpoint %s (%s)", ep.Name(), ep.ID()) if err = d.ProgramExternalConnectivity(n.ID(), ep.ID(), sb.Labels()); err != nil { return types.InternalErrorf( "driver failed programming external connectivity on endpoint %s (%s): %v", ep.Name(), ep.ID(), err) } } } if !sb.needDefaultGW() { if e := sb.clearDefaultGW(); e != nil { logrus.Warnf("Failure while disconnecting sandbox %s (%s) from gateway network: %v", sb.ID(), sb.ContainerID(), e) } } return nil } func doUpdateHostsFile(n *network, sb *sandbox) bool { return !n.ingress && n.Name() != libnGWNetwork } func (ep *endpoint) rename(name string) error { var ( err error netWatch *netWatch ok bool ) n := ep.getNetwork() if n == nil { return fmt.Errorf("network not connected for ep %q", ep.name) } c := n.getController() sb, ok := ep.getSandbox() if !ok { logrus.Warnf("rename for %s aborted, sandbox %s is not anymore present", ep.ID(), ep.sandboxID) return nil } if c.isAgent() { if err = ep.deleteServiceInfoFromCluster(sb, "rename"); err != nil { return types.InternalErrorf("Could not delete service state for endpoint %s from cluster on rename: %v", ep.Name(), err) } } else { c.Lock() netWatch, ok = c.nmap[n.ID()] c.Unlock() if !ok { return fmt.Errorf("watch null for network %q", n.Name()) } n.updateSvcRecord(ep, c.getLocalEps(netWatch), false) } oldName := ep.name oldAnonymous := ep.anonymous ep.name = name ep.anonymous = false if c.isAgent() { if err = ep.addServiceInfoToCluster(sb); err != nil { return types.InternalErrorf("Could not add service state for endpoint %s to cluster on rename: %v", ep.Name(), err) } defer func() { if err != nil { ep.deleteServiceInfoFromCluster(sb, "rename") ep.name = oldName ep.anonymous = oldAnonymous ep.addServiceInfoToCluster(sb) } }() } else { n.updateSvcRecord(ep, c.getLocalEps(netWatch), true) defer func() { if err != nil { n.updateSvcRecord(ep, c.getLocalEps(netWatch), false) ep.name = oldName ep.anonymous = oldAnonymous n.updateSvcRecord(ep, c.getLocalEps(netWatch), true) } }() } // Update the store with the updated name if err = c.updateToStore(ep); err != nil { return err } // After the name change do a dummy endpoint count update to // trigger the service record update in the peer nodes // Ignore the error because updateStore fail for EpCnt is a // benign error. Besides there is no meaningful recovery that // we can do. When the cluster recovers subsequent EpCnt update // will force the peers to get the correct EP name. n.getEpCnt().updateStore() return err } func (ep *endpoint) hasInterface(iName string) bool { ep.Lock() defer ep.Unlock() return ep.iface != nil && ep.iface.srcName == iName } func (ep *endpoint) Leave(sbox Sandbox, options ...EndpointOption) error { if sbox == nil || sbox.ID() == "" || sbox.Key() == "" { return types.BadRequestErrorf("invalid Sandbox passed to endpoint leave: %v", sbox) } sb, ok := sbox.(*sandbox) if !ok { return types.BadRequestErrorf("not a valid Sandbox interface") } sb.joinLeaveStart() defer sb.joinLeaveEnd() return ep.sbLeave(sb, false, options...) } func (ep *endpoint) sbLeave(sb *sandbox, force bool, options ...EndpointOption) error { n, err := ep.getNetworkFromStore() if err != nil { return fmt.Errorf("failed to get network from store during leave: %v", err) } ep, err = n.getEndpointFromStore(ep.ID()) if err != nil { return fmt.Errorf("failed to get endpoint from store during leave: %v", err) } ep.Lock() sid := ep.sandboxID ep.Unlock() if sid == "" { return types.ForbiddenErrorf("cannot leave endpoint with no attached sandbox") } if sid != sb.ID() { return types.ForbiddenErrorf("unexpected sandbox ID in leave request. Expected %s. Got %s", ep.sandboxID, sb.ID()) } ep.processOptions(options...) d, err := n.driver(!force) if err != nil { return fmt.Errorf("failed to get driver during endpoint leave: %v", err) } ep.Lock() ep.sandboxID = "" ep.network = n ep.Unlock() // Current endpoint providing external connectivity to the sandbox extEp := sb.getGatewayEndpoint() moveExtConn := extEp != nil && (extEp.ID() == ep.ID()) if d != nil { if moveExtConn { logrus.Debugf("Revoking external connectivity on endpoint %s (%s)", ep.Name(), ep.ID()) if err := d.RevokeExternalConnectivity(n.id, ep.id); err != nil { logrus.Warnf("driver failed revoking external connectivity on endpoint %s (%s): %v", ep.Name(), ep.ID(), err) } } if err := d.Leave(n.id, ep.id); err != nil { if _, ok := err.(types.MaskableError); !ok { logrus.Warnf("driver error disconnecting container %s : %v", ep.name, err) } } } if err := sb.clearNetworkResources(ep); err != nil { logrus.Warnf("Could not cleanup network resources on container %s disconnect: %v", ep.name, err) } // Update the store about the sandbox detach only after we // have completed sb.clearNetworkresources above to avoid // spurious logs when cleaning up the sandbox when the daemon // ungracefully exits and restarts before completing sandbox // detach but after store has been updated. if err := n.getController().updateToStore(ep); err != nil { return err } if e := ep.deleteServiceInfoFromCluster(sb, "sbLeave"); e != nil { logrus.Errorf("Could not delete service state for endpoint %s from cluster: %v", ep.Name(), e) } if e := ep.deleteDriverInfoFromCluster(); e != nil { logrus.Errorf("Could not delete endpoint state for endpoint %s from cluster: %v", ep.Name(), e) } sb.deleteHostsEntries(n.getSvcRecords(ep)) if !sb.inDelete && sb.needDefaultGW() && sb.getEndpointInGWNetwork() == nil { return sb.setupDefaultGW() } // New endpoint providing external connectivity for the sandbox extEp = sb.getGatewayEndpoint() if moveExtConn && extEp != nil { logrus.Debugf("Programming external connectivity on endpoint %s (%s)", extEp.Name(), extEp.ID()) extN, err := extEp.getNetworkFromStore() if err != nil { return fmt.Errorf("failed to get network from store for programming external connectivity during leave: %v", err) } extD, err := extN.driver(true) if err != nil { return fmt.Errorf("failed to get driver for programming external connectivity during leave: %v", err) } if err := extD.ProgramExternalConnectivity(extEp.network.ID(), extEp.ID(), sb.Labels()); err != nil { logrus.Warnf("driver failed programming external connectivity on endpoint %s: (%s) %v", extEp.Name(), extEp.ID(), err) } } if !sb.needDefaultGW() { if err := sb.clearDefaultGW(); err != nil { logrus.Warnf("Failure while disconnecting sandbox %s (%s) from gateway network: %v", sb.ID(), sb.ContainerID(), err) } } return nil } func (ep *endpoint) Delete(force bool) error { var err error n, err := ep.getNetworkFromStore() if err != nil { return fmt.Errorf("failed to get network during Delete: %v", err) } ep, err = n.getEndpointFromStore(ep.ID()) if err != nil { return fmt.Errorf("failed to get endpoint from store during Delete: %v", err) } ep.Lock() epid := ep.id name := ep.name sbid := ep.sandboxID ep.Unlock() sb, _ := n.getController().SandboxByID(sbid) if sb != nil && !force { return &ActiveContainerError{name: name, id: epid} } if sb != nil { if e := ep.sbLeave(sb.(*sandbox), force); e != nil { logrus.Warnf("failed to leave sandbox for endpoint %s : %v", name, e) } } if err = n.getController().deleteFromStore(ep); err != nil { return err } defer func() { if err != nil && !force { ep.dbExists = false if e := n.getController().updateToStore(ep); e != nil { logrus.Warnf("failed to recreate endpoint in store %s : %v", name, e) } } }() // unwatch for service records n.getController().unWatchSvcRecord(ep) if err = ep.deleteEndpoint(force); err != nil && !force { return err } ep.releaseAddress() if err := n.getEpCnt().DecEndpointCnt(); err != nil { logrus.Warnf("failed to decrement endpoint count for ep %s: %v", ep.ID(), err) } return nil } func (ep *endpoint) deleteEndpoint(force bool) error { ep.Lock() n := ep.network name := ep.name epid := ep.id ep.Unlock() driver, err := n.driver(!force) if err != nil { return fmt.Errorf("failed to delete endpoint: %v", err) } if driver == nil { return nil } if err := driver.DeleteEndpoint(n.id, epid); err != nil { if _, ok := err.(types.ForbiddenError); ok { return err } if _, ok := err.(types.MaskableError); !ok { logrus.Warnf("driver error deleting endpoint %s : %v", name, err) } } return nil } func (ep *endpoint) getSandbox() (*sandbox, bool) { c := ep.network.getController() ep.Lock() sid := ep.sandboxID ep.Unlock() c.Lock() ps, ok := c.sandboxes[sid] c.Unlock() return ps, ok } func (ep *endpoint) getFirstInterfaceAddress() net.IP { ep.Lock() defer ep.Unlock() if ep.iface.addr != nil { return ep.iface.addr.IP } return nil } // EndpointOptionGeneric function returns an option setter for a Generic option defined // in a Dictionary of Key-Value pair func EndpointOptionGeneric(generic map[string]interface{}) EndpointOption { return func(ep *endpoint) { for k, v := range generic { ep.generic[k] = v } } } var ( linkLocalMask = net.CIDRMask(16, 32) linkLocalMaskIPv6 = net.CIDRMask(64, 128) ) // CreateOptionIpam function returns an option setter for the ipam configuration for this endpoint func CreateOptionIpam(ipV4, ipV6 net.IP, llIPs []net.IP, ipamOptions map[string]string) EndpointOption { return func(ep *endpoint) { ep.prefAddress = ipV4 ep.prefAddressV6 = ipV6 if len(llIPs) != 0 { for _, ip := range llIPs { nw := &net.IPNet{IP: ip, Mask: linkLocalMask} if ip.To4() == nil { nw.Mask = linkLocalMaskIPv6 } ep.iface.llAddrs = append(ep.iface.llAddrs, nw) } } ep.ipamOptions = ipamOptions } } // CreateOptionExposedPorts function returns an option setter for the container exposed // ports option to be passed to network.CreateEndpoint() method. func CreateOptionExposedPorts(exposedPorts []types.TransportPort) EndpointOption { return func(ep *endpoint) { // Defensive copy eps := make([]types.TransportPort, len(exposedPorts)) copy(eps, exposedPorts) // Store endpoint label and in generic because driver needs it ep.exposedPorts = eps ep.generic[netlabel.ExposedPorts] = eps } } // CreateOptionPortMapping function returns an option setter for the mapping // ports option to be passed to network.CreateEndpoint() method. func CreateOptionPortMapping(portBindings []types.PortBinding) EndpointOption { return func(ep *endpoint) { // Store a copy of the bindings as generic data to pass to the driver pbs := make([]types.PortBinding, len(portBindings)) copy(pbs, portBindings) ep.generic[netlabel.PortMap] = pbs } } // CreateOptionDNS function returns an option setter for dns entry option to // be passed to container Create method. func CreateOptionDNS(dns []string) EndpointOption { return func(ep *endpoint) { ep.generic[netlabel.DNSServers] = dns } } // CreateOptionAnonymous function returns an option setter for setting // this endpoint as anonymous func CreateOptionAnonymous() EndpointOption { return func(ep *endpoint) { ep.anonymous = true } } // CreateOptionDisableResolution function returns an option setter to indicate // this endpoint doesn't want embedded DNS server functionality func CreateOptionDisableResolution() EndpointOption { return func(ep *endpoint) { ep.disableResolution = true } } //CreateOptionAlias function returns an option setter for setting endpoint alias func CreateOptionAlias(name string, alias string) EndpointOption { return func(ep *endpoint) { if ep.aliases == nil { ep.aliases = make(map[string]string) } ep.aliases[alias] = name } } // CreateOptionService function returns an option setter for setting service binding configuration func CreateOptionService(name, id string, vip net.IP, ingressPorts []*PortConfig, aliases []string) EndpointOption { return func(ep *endpoint) { ep.svcName = name ep.svcID = id ep.virtualIP = vip ep.ingressPorts = ingressPorts ep.svcAliases = aliases } } //CreateOptionMyAlias function returns an option setter for setting endpoint's self alias func CreateOptionMyAlias(alias string) EndpointOption { return func(ep *endpoint) { ep.myAliases = append(ep.myAliases, alias) } } // JoinOptionPriority function returns an option setter for priority option to // be passed to the endpoint.Join() method. func JoinOptionPriority(ep Endpoint, prio int) EndpointOption { return func(ep *endpoint) { // ep lock already acquired c := ep.network.getController() c.Lock() sb, ok := c.sandboxes[ep.sandboxID] c.Unlock() if !ok { logrus.Errorf("Could not set endpoint priority value during Join to endpoint %s: No sandbox id present in endpoint", ep.id) return } sb.epPriority[ep.id] = prio } } func (ep *endpoint) DataScope() string { return ep.getNetwork().DataScope() } func (ep *endpoint) assignAddress(ipam ipamapi.Ipam, assignIPv4, assignIPv6 bool) error { var err error n := ep.getNetwork() if n.hasSpecialDriver() { return nil } logrus.Debugf("Assigning addresses for endpoint %s's interface on network %s", ep.Name(), n.Name()) if assignIPv4 { if err = ep.assignAddressVersion(4, ipam); err != nil { return err } } if assignIPv6 { err = ep.assignAddressVersion(6, ipam) } return err } func (ep *endpoint) assignAddressVersion(ipVer int, ipam ipamapi.Ipam) error { var ( poolID *string address **net.IPNet prefAdd net.IP progAdd net.IP ) n := ep.getNetwork() switch ipVer { case 4: poolID = &ep.iface.v4PoolID address = &ep.iface.addr prefAdd = ep.prefAddress case 6: poolID = &ep.iface.v6PoolID address = &ep.iface.addrv6 prefAdd = ep.prefAddressV6 default: return types.InternalErrorf("incorrect ip version number passed: %d", ipVer) } ipInfo := n.getIPInfo(ipVer) // ipv6 address is not mandatory if len(ipInfo) == 0 && ipVer == 6 { return nil } // The address to program may be chosen by the user or by the network driver in one specific // case to support backward compatibility with `docker daemon --fixed-cidrv6` use case if prefAdd != nil { progAdd = prefAdd } else if *address != nil { progAdd = (*address).IP } for _, d := range ipInfo { if progAdd != nil && !d.Pool.Contains(progAdd) { continue } addr, _, err := ipam.RequestAddress(d.PoolID, progAdd, ep.ipamOptions) if err == nil { ep.Lock() *address = addr *poolID = d.PoolID ep.Unlock() return nil } if err != ipamapi.ErrNoAvailableIPs || progAdd != nil { return err } } if progAdd != nil { return types.BadRequestErrorf("Invalid address %s: It does not belong to any of this network's subnets", prefAdd) } return fmt.Errorf("no available IPv%d addresses on this network's address pools: %s (%s)", ipVer, n.Name(), n.ID()) } func (ep *endpoint) releaseAddress() { n := ep.getNetwork() if n.hasSpecialDriver() { return } logrus.Debugf("Releasing addresses for endpoint %s's interface on network %s", ep.Name(), n.Name()) ipam, _, err := n.getController().getIPAMDriver(n.ipamType) if err != nil { logrus.Warnf("Failed to retrieve ipam driver to release interface address on delete of endpoint %s (%s): %v", ep.Name(), ep.ID(), err) return } if ep.iface.addr != nil { if err := ipam.ReleaseAddress(ep.iface.v4PoolID, ep.iface.addr.IP); err != nil { logrus.Warnf("Failed to release ip address %s on delete of endpoint %s (%s): %v", ep.iface.addr.IP, ep.Name(), ep.ID(), err) } } if ep.iface.addrv6 != nil && ep.iface.addrv6.IP.IsGlobalUnicast() { if err := ipam.ReleaseAddress(ep.iface.v6PoolID, ep.iface.addrv6.IP); err != nil { logrus.Warnf("Failed to release ip address %s on delete of endpoint %s (%s): %v", ep.iface.addrv6.IP, ep.Name(), ep.ID(), err) } } } func (c *controller) cleanupLocalEndpoints() { // Get used endpoints eps := make(map[string]interface{}) for _, sb := range c.sandboxes { for _, ep := range sb.endpoints { eps[ep.id] = true } } nl, err := c.getNetworksForScope(datastore.LocalScope) if err != nil { logrus.Warnf("Could not get list of networks during endpoint cleanup: %v", err) return } for _, n := range nl { if n.ConfigOnly() { continue } epl, err := n.getEndpointsFromStore() if err != nil { logrus.Warnf("Could not get list of endpoints in network %s during endpoint cleanup: %v", n.name, err) continue } for _, ep := range epl { if _, ok := eps[ep.id]; ok { continue } logrus.Infof("Removing stale endpoint %s (%s)", ep.name, ep.id) if err := ep.Delete(true); err != nil { logrus.Warnf("Could not delete local endpoint %s during endpoint cleanup: %v", ep.name, err) } } epl, err = n.getEndpointsFromStore() if err != nil { logrus.Warnf("Could not get list of endpoints in network %s for count update: %v", n.name, err) continue } epCnt := n.getEpCnt().EndpointCnt() if epCnt != uint64(len(epl)) { logrus.Infof("Fixing inconsistent endpoint_cnt for network %s. Expected=%d, Actual=%d", n.name, len(epl), epCnt) n.getEpCnt().setCnt(uint64(len(epl))) } } }