Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.incubator.net.virtual; |
| 18 | |
| 19 | import org.onosproject.cluster.NodeId; |
| 20 | import org.onosproject.cluster.RoleInfo; |
| 21 | import org.onosproject.mastership.MastershipEvent; |
| 22 | import org.onosproject.mastership.MastershipStoreDelegate; |
| 23 | import org.onosproject.mastership.MastershipTerm; |
| 24 | import org.onosproject.net.DeviceId; |
| 25 | import org.onosproject.net.MastershipRole; |
| 26 | |
| 27 | import java.util.Set; |
| 28 | import java.util.concurrent.CompletableFuture; |
| 29 | |
| 30 | /** |
| 31 | * Manages inventory of mastership roles for devices, across controller |
| 32 | * instances for virtual networks; not intended for direct use. |
| 33 | */ |
| 34 | public interface VirtualNetworkMastershipStore |
| 35 | extends VirtualStore<MastershipEvent, MastershipStoreDelegate> { |
| 36 | |
| 37 | // three things to map: NodeId, DeviceId, MastershipRole |
| 38 | |
| 39 | /** |
| 40 | * Requests role of the local node for the specified device. |
| 41 | * |
| 42 | * @param networkId the virtual network identifier |
| 43 | * @param deviceId the device identifier |
| 44 | * @return established or newly negotiated mastership role |
| 45 | */ |
| 46 | CompletableFuture<MastershipRole> requestRole(NetworkId networkId, DeviceId deviceId); |
| 47 | |
| 48 | /** |
| 49 | * Returns the role of a device for a specific controller instance. |
| 50 | * |
| 51 | * @param networkId virtual network identifier |
| 52 | * @param nodeId the instance identifier |
| 53 | * @param deviceId the device identifiers |
| 54 | * @return the role |
| 55 | */ |
| 56 | MastershipRole getRole(NetworkId networkId, NodeId nodeId, DeviceId deviceId); |
| 57 | |
| 58 | /** |
| 59 | * Returns the master for a device. |
| 60 | * |
| 61 | * @param networkId virtual network identifier |
| 62 | * @param deviceId the device identifier |
| 63 | * @return the instance identifier of the master |
| 64 | */ |
| 65 | NodeId getMaster(NetworkId networkId, DeviceId deviceId); |
| 66 | |
| 67 | /** |
| 68 | * Returns the master and backup nodes for a device. |
| 69 | * |
| 70 | * @param networkId virtual network identifier |
| 71 | * @param deviceId the device identifier |
| 72 | * @return a RoleInfo containing controller IDs |
| 73 | */ |
| 74 | RoleInfo getNodes(NetworkId networkId, DeviceId deviceId); |
| 75 | |
| 76 | /** |
| 77 | * Returns the devices that a controller instance is master of. |
| 78 | * |
| 79 | * @param networkId virtual network identifier |
| 80 | * @param nodeId the instance identifier |
| 81 | * @return a set of device identifiers |
| 82 | */ |
| 83 | Set<DeviceId> getDevices(NetworkId networkId, NodeId nodeId); |
| 84 | |
| 85 | |
| 86 | /** |
| 87 | * Sets a device's role for a specified controller instance. |
| 88 | * |
| 89 | * @param networkId virtual network identifier |
| 90 | * @param nodeId controller instance identifier |
| 91 | * @param deviceId device identifier |
| 92 | * @return a mastership event |
| 93 | */ |
| 94 | CompletableFuture<MastershipEvent> setMaster(NetworkId networkId, |
| 95 | NodeId nodeId, DeviceId deviceId); |
| 96 | |
| 97 | /** |
| 98 | * Returns the current master and number of past mastership hand-offs |
| 99 | * (terms) for a device. |
| 100 | * |
| 101 | * @param networkId virtual network identifier |
| 102 | * @param deviceId the device identifier |
| 103 | * @return the current master's ID and the term value for device, or null |
| 104 | */ |
| 105 | MastershipTerm getTermFor(NetworkId networkId, DeviceId deviceId); |
| 106 | |
| 107 | /** |
| 108 | * Sets a controller instance's mastership role to STANDBY for a device. |
| 109 | * If the role is MASTER, another controller instance will be selected |
| 110 | * as a candidate master. |
| 111 | * |
| 112 | * @param networkId virtual network identifier |
| 113 | * @param nodeId the controller instance identifier |
| 114 | * @param deviceId device to revoke mastership role for |
| 115 | * @return a mastership event |
| 116 | */ |
| 117 | CompletableFuture<MastershipEvent> setStandby(NetworkId networkId, |
| 118 | NodeId nodeId, DeviceId deviceId); |
| 119 | |
| 120 | /** |
| 121 | * Allows a controller instance to give up its current role for a device. |
| 122 | * If the role is MASTER, another controller instance will be selected |
| 123 | * as a candidate master. |
| 124 | * |
| 125 | * @param networkId virtual network identifier |
| 126 | * @param nodeId the controller instance identifier |
| 127 | * @param deviceId device to revoke mastership role for |
| 128 | * @return a mastership event |
| 129 | */ |
| 130 | CompletableFuture<MastershipEvent> relinquishRole(NetworkId networkId, |
| 131 | NodeId nodeId, DeviceId deviceId); |
| 132 | |
| 133 | /** |
| 134 | * Removes all the roles for the specified controller instance. |
| 135 | * If the role was MASTER, another controller instance will be selected |
| 136 | * as a candidate master. |
| 137 | * |
| 138 | * @param networkId virtual network identifier |
| 139 | * @param nodeId the controller instance identifier |
| 140 | */ |
| 141 | void relinquishAllRole(NetworkId networkId, NodeId nodeId); |
| 142 | } |