package driverapi import ( "net" "github.com/docker/docker/pkg/plugingetter" "github.com/docker/libnetwork/discoverapi" ) // NetworkPluginEndpointType represents the Endpoint Type used by Plugin system const NetworkPluginEndpointType = "NetworkDriver" // Driver is an interface that every plugin driver needs to implement. type Driver interface { discoverapi.Discover // NetworkAllocate invokes the driver method to allocate network // specific resources passing network id and network specific config. // It returns a key,value pair of network specific driver allocations // to the caller. NetworkAllocate(nid string, options map[string]string, ipV4Data, ipV6Data []IPAMData) (map[string]string, error) // NetworkFree invokes the driver method to free network specific resources // associated with a given network id. NetworkFree(nid string) error // CreateNetwork invokes the driver method to create a network // passing the network id and network specific config. The // config mechanism will eventually be replaced with labels // which are yet to be introduced. The driver can return a // list of table names for which it is interested in receiving // notification when a CRUD operation is performed on any // entry in that table. This will be ignored for local scope // drivers. CreateNetwork(nid string, options map[string]interface{}, nInfo NetworkInfo, ipV4Data, ipV6Data []IPAMData) error // DeleteNetwork invokes the driver method to delete network passing // the network id. DeleteNetwork(nid string) error // CreateEndpoint invokes the driver method to create an endpoint // passing the network id, endpoint id endpoint information and driver // specific config. The endpoint information can be either consumed by // the driver or populated by the driver. The config mechanism will // eventually be replaced with labels which are yet to be introduced. CreateEndpoint(nid, eid string, ifInfo InterfaceInfo, options map[string]interface{}) error // DeleteEndpoint invokes the driver method to delete an endpoint // passing the network id and endpoint id. DeleteEndpoint(nid, eid string) error // EndpointOperInfo retrieves from the driver the operational data related to the specified endpoint EndpointOperInfo(nid, eid string) (map[string]interface{}, error) // Join method is invoked when a Sandbox is attached to an endpoint. Join(nid, eid string, sboxKey string, jinfo JoinInfo, options map[string]interface{}) error // Leave method is invoked when a Sandbox detaches from an endpoint. Leave(nid, eid string) error // ProgramExternalConnectivity invokes the driver method which does the necessary // programming to allow the external connectivity dictated by the passed options ProgramExternalConnectivity(nid, eid string, options map[string]interface{}) error // RevokeExternalConnectivity asks the driver to remove any external connectivity // programming that was done so far RevokeExternalConnectivity(nid, eid string) error // EventNotify notifies the driver when a CRUD operation has // happened on a table of its interest as soon as this node // receives such an event in the gossip layer. This method is // only invoked for the global scope driver. EventNotify(event EventType, nid string, tableName string, key string, value []byte) // DecodeTableEntry passes the driver a key, value pair from table it registered // with libnetwork. Driver should return {object ID, map[string]string} tuple. // If DecodeTableEntry is called for a table associated with NetworkObject or // EndpointObject the return object ID should be the network id or endppoint id // associated with that entry. map should have information about the object that // can be presented to the user. // For exampe: overlay driver returns the VTEP IP of the host that has the endpoint // which is shown in 'network inspect --verbose' DecodeTableEntry(tablename string, key string, value []byte) (string, map[string]string) // Type returns the type of this driver, the network type this driver manages Type() string // IsBuiltIn returns true if it is a built-in driver IsBuiltIn() bool } // NetworkInfo provides a go interface for drivers to provide network // specific information to libnetwork. type NetworkInfo interface { // TableEventRegister registers driver interest in a given // table name. TableEventRegister(tableName string, objType ObjectType) error } // InterfaceInfo provides a go interface for drivers to retrive // network information to interface resources. type InterfaceInfo interface { // SetMacAddress allows the driver to set the mac address to the endpoint interface // during the call to CreateEndpoint, if the mac address is not already set. SetMacAddress(mac net.HardwareAddr) error // SetIPAddress allows the driver to set the ip address to the endpoint interface // during the call to CreateEndpoint, if the address is not already set. // The API is to be used to assign both the IPv4 and IPv6 address types. SetIPAddress(ip *net.IPNet) error // MacAddress returns the MAC address. MacAddress() net.HardwareAddr // Address returns the IPv4 address. Address() *net.IPNet // AddressIPv6 returns the IPv6 address. AddressIPv6() *net.IPNet } // InterfaceNameInfo provides a go interface for the drivers to assign names // to interfaces. type InterfaceNameInfo interface { // SetNames method assigns the srcName and dstPrefix for the interface. SetNames(srcName, dstPrefix string) error } // JoinInfo represents a set of resources that the driver has the ability to provide during // join time. type JoinInfo interface { // InterfaceName returns an InterfaceNameInfo go interface to facilitate // setting the names for the interface. InterfaceName() InterfaceNameInfo // SetGateway sets the default IPv4 gateway when a container joins the endpoint. SetGateway(net.IP) error // SetGatewayIPv6 sets the default IPv6 gateway when a container joins the endpoint. SetGatewayIPv6(net.IP) error // AddStaticRoute adds a route to the sandbox. // It may be used in addition to or instead of a default gateway (as above). AddStaticRoute(destination *net.IPNet, routeType int, nextHop net.IP) error // DisableGatewayService tells libnetwork not to provide Default GW for the container DisableGatewayService() // AddTableEntry adds a table entry to the gossip layer // passing the table name, key and an opaque value. AddTableEntry(tableName string, key string, value []byte) error } // DriverCallback provides a Callback interface for Drivers into LibNetwork type DriverCallback interface { // GetPluginGetter returns the pluginv2 getter. GetPluginGetter() plugingetter.PluginGetter // RegisterDriver provides a way for Remote drivers to dynamically register new NetworkType and associate with a driver instance RegisterDriver(name string, driver Driver, capability Capability) error } // Capability represents the high level capabilities of the drivers which libnetwork can make use of type Capability struct { DataScope string ConnectivityScope string } // IPAMData represents the per-network ip related // operational information libnetwork will send // to the network driver during CreateNetwork() type IPAMData struct { AddressSpace string Pool *net.IPNet Gateway *net.IPNet AuxAddresses map[string]*net.IPNet } // EventType defines a type for the CRUD event type EventType uint8 const ( // Create event is generated when a table entry is created, Create EventType = 1 + iota // Update event is generated when a table entry is updated. Update // Delete event is generated when a table entry is deleted. Delete ) // ObjectType represents the type of object driver wants to store in libnetwork's networkDB type ObjectType int const ( // EndpointObject should be set for libnetwork endpoint object related data EndpointObject ObjectType = 1 + iota // NetworkObject should be set for libnetwork network object related data NetworkObject // OpaqueObject is for driver specific data with no corresponding libnetwork object OpaqueObject ) // IsValidType validates the passed in type against the valid object types func IsValidType(objType ObjectType) bool { switch objType { case EndpointObject: fallthrough case NetworkObject: fallthrough case OpaqueObject: return true } return false }