| /* |
| * Copyright 2020-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.t3.api; |
| |
| import com.google.common.collect.ImmutableMap; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.net.DeviceId; |
| |
| import java.util.Map; |
| |
| /** |
| * Represents Network Information Base (NIB) for mastership |
| * and supports alternative functions to |
| * {@link org.onosproject.mastership.MastershipService} for offline data. |
| */ |
| public class MastershipNib { |
| |
| private Map<DeviceId, NodeId> deviceMasterMap; |
| |
| // use the singleton helper to create the instance |
| protected MastershipNib() { |
| } |
| |
| /** |
| * Sets a map of device id : master node id. |
| * |
| * @param deviceMasterMap device-master map |
| */ |
| public void setDeviceMasterMap(Map<DeviceId, NodeId> deviceMasterMap) { |
| this.deviceMasterMap = deviceMasterMap; |
| } |
| |
| /** |
| * Returns the device-master map. |
| * |
| * @return device-master map |
| */ |
| public Map<DeviceId, NodeId> getDeviceMasterMap() { |
| return ImmutableMap.copyOf(deviceMasterMap); |
| } |
| |
| /** |
| * Returns the current master for a given device. |
| * |
| * @param deviceId the identifier of the device |
| * @return the ID of the master controller for the device |
| */ |
| public NodeId getMasterFor(DeviceId deviceId) { |
| return deviceMasterMap.get(deviceId); |
| } |
| |
| /** |
| * Returns the singleton instance of mastership NIB. |
| * |
| * @return instance of mastership NIB |
| */ |
| public static MastershipNib getInstance() { |
| return MastershipNib.SingletonHelper.INSTANCE; |
| } |
| |
| private static class SingletonHelper { |
| private static final MastershipNib INSTANCE = new MastershipNib(); |
| } |
| |
| } |