| /* |
| * Copyright 2014-2015 Open Networking Laboratory |
| * |
| * 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.cordvtn; |
| |
| import org.onosproject.cluster.LeadershipService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.store.service.EventuallyConsistentMap; |
| import org.slf4j.Logger; |
| |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Node connection manager. |
| */ |
| public class NodeConnectionManager { |
| protected final Logger log = getLogger(getClass()); |
| |
| private final ApplicationId appId; |
| private final NodeId localId; |
| private final EventuallyConsistentMap<DeviceId, OvsdbNode> nodeStore; |
| private final MastershipService mastershipService; |
| private final LeadershipService leadershipService; |
| |
| private static final int DELAY_SEC = 5; |
| private ScheduledExecutorService connectionExecutor; |
| |
| /** |
| * Creates a new NodeConnectionManager. |
| * |
| * @param appId app id |
| * @param localId local id |
| * @param nodeStore node store |
| * @param mastershipService mastership service |
| * @param leadershipService leadership service |
| */ |
| public NodeConnectionManager(ApplicationId appId, NodeId localId, |
| EventuallyConsistentMap<DeviceId, OvsdbNode> nodeStore, |
| MastershipService mastershipService, |
| LeadershipService leadershipService) { |
| this.appId = appId; |
| this.localId = localId; |
| this.nodeStore = nodeStore; |
| this.mastershipService = mastershipService; |
| this.leadershipService = leadershipService; |
| } |
| |
| /** |
| * Starts the node connection manager. |
| */ |
| public void start() { |
| connectionExecutor = Executors.newSingleThreadScheduledExecutor( |
| groupedThreads("onos/cordvtn", "connection-executor")); |
| connectionExecutor.scheduleWithFixedDelay(() -> nodeStore.values() |
| .stream() |
| .filter(node -> localId.equals(getMaster(node))) |
| .forEach(this::connectNode), 0, DELAY_SEC, TimeUnit.SECONDS); |
| } |
| |
| /** |
| * Stops the node connection manager. |
| */ |
| public void stop() { |
| connectionExecutor.shutdown(); |
| } |
| |
| /** |
| * Adds a new node to the system. |
| * |
| * @param ovsdbNode ovsdb node |
| */ |
| public void connectNode(OvsdbNode ovsdbNode) { |
| switch (ovsdbNode.state()) { |
| case INIT: |
| case DISCONNECTED: |
| // TODO: set the node to passive mode |
| case READY: |
| // TODO: initiate connection |
| break; |
| case CONNECTED: |
| break; |
| default: |
| } |
| } |
| |
| /** |
| * Deletes the ovsdb node. |
| * |
| * @param ovsdbNode ovsdb node |
| */ |
| public void disconnectNode(OvsdbNode ovsdbNode) { |
| switch (ovsdbNode.state()) { |
| case CONNECTED: |
| // TODO: disconnect |
| break; |
| case INIT: |
| case READY: |
| case DISCONNECTED: |
| break; |
| default: |
| } |
| } |
| |
| private NodeId getMaster(OvsdbNode ovsdbNode) { |
| // Return the master of the bridge(switch) if it exist or |
| // return the current leader |
| if (ovsdbNode.bridgeId() == DeviceId.NONE) { |
| return leadershipService.getLeader(this.appId.name()); |
| } else { |
| return mastershipService.getMasterFor(ovsdbNode.bridgeId()); |
| } |
| } |
| |
| private void setPassiveMode(OvsdbNode ovsdbNode) { |
| // TODO: need ovsdb client implementation first |
| // TODO: set the remove ovsdb server passive mode |
| // TODO: set the node state READY if it succeed |
| } |
| |
| private void connect(OvsdbNode ovsdbNode) { |
| // TODO: need ovsdb client implementation first |
| } |
| |
| private void disconnect(OvsdbNode ovsdbNode) { |
| // TODO: need ovsdb client implementation first |
| } |
| } |