CORD-151 add initial skeleton for cord-vtn application
Change-Id: I57bf17445f1e571b51bca2fe7c2631e65cd43145
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/NodeConnectionManager.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/NodeConnectionManager.java
new file mode 100644
index 0000000..0b7029e
--- /dev/null
+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/NodeConnectionManager.java
@@ -0,0 +1,145 @@
+/*
+ * 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 localId local id
+ * @param nodeStore node store
+ * @param mastershipService mastership 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(node -> connectNode(node)), 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
+ }
+}