Connection Manager infrastructure supporting the Clustering Active-Active requirement.

[controller.git] / opendaylight / sal / connection / implementation / src / main / java / org / opendaylight / controller / sal / connection / implementation / internal / ConnectionService.java

diff --git a/opendaylight/sal/connection/implementation/src/main/java/org/opendaylight/controller/sal/connection/implementation/internal/ConnectionService.java b/opendaylight/sal/connection/implementation/src/main/java/org/opendaylight/controller/sal/connection/implementation/internal/ConnectionService.java
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+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.sal.connection.implementation.internal;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.Collections;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+import org.opendaylight.controller.sal.connection.ConnectionConstants;
+import org.opendaylight.controller.sal.connection.IConnectionListener;
+import org.opendaylight.controller.sal.connection.IConnectionService;
+import org.opendaylight.controller.sal.connection.IPluginInConnectionService;
+import org.opendaylight.controller.sal.connection.IPluginOutConnectionService;
+import org.opendaylight.controller.sal.core.Node;
+import org.opendaylight.controller.sal.utils.GlobalConstants;
+import org.opendaylight.controller.sal.utils.Status;
+import org.opendaylight.controller.sal.utils.StatusCode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ConnectionService implements IPluginOutConnectionService, IConnectionService {
+    protected static final Logger logger = LoggerFactory
+            .getLogger(ConnectionService.class);
+    private IConnectionListener connectionListener;
+    private ConcurrentMap<String, IPluginInConnectionService> pluginService =
+            new ConcurrentHashMap<String, IPluginInConnectionService>();
+
+    void setPluginService (Map props, IPluginInConnectionService s) {
+        String type = null;
+        Object value = props.get(GlobalConstants.PROTOCOLPLUGINTYPE.toString());
+        if (value instanceof String) {
+            type = (String) value;
+        }
+        if (type == null) {
+            logger.error("Received a PluginInConnectionService without any "
+                    + "protocolPluginType provided");
+        } else {
+            this.pluginService.put(type, s);
+        }
+    }
+
+    void unsetPluginService(Map props, IPluginInConnectionService s) {
+        String type = null;
+
+        Object value = props.get(GlobalConstants.PROTOCOLPLUGINTYPE.toString());
+        if (value instanceof String) {
+            type = (String) value;
+        }
+        if (type == null) {
+            logger.error("Received a PluginInConnectionService without any "
+                    + "protocolPluginType provided");
+        } else if (this.pluginService.get(type).equals(s)) {
+            this.pluginService.remove(type);
+        }
+    }
+
+    void setListener(IConnectionListener s) {
+        this.connectionListener = s;
+    }
+
+    void unsetListener(IConnectionListener s) {
+        if (this.connectionListener == s) {
+            this.connectionListener = null;
+        }
+    }
+
+    /**
+     * Function called by the dependency manager when all the required
+     * dependencies are satisfied
+     *
+     */
+    void init() {
+    }
+
+    /**
+     * Function called by the dependency manager when at least one dependency
+     * become unsatisfied or when the component is shutting down because for
+     * example bundle is being stopped.
+     *
+     */
+    void destroy() {
+        connectionListener = null;
+        if (this.pluginService != null) {
+            this.pluginService.clear();
+        }
+    }
+
+    /**
+     * Method to test if a node is local to a controller.
+     *
+     * @return true if node is local to this controller. false otherwise.
+     */
+    public boolean isLocal(Node node) {
+        if (this.connectionListener == null) return true;
+        return connectionListener.isLocal(node);
+    }
+
+    @Override
+    public Node connect (String type, String connectionIdentifier, Map<ConnectionConstants, String> params) {
+        IPluginInConnectionService s = pluginService.get(type);
+        if (s != null) return s.connect(connectionIdentifier, params);
+        return null;
+    }
+
+    @Override
+    public Node connect (String connectionIdentifier, Map<ConnectionConstants, String> params) {
+        synchronized (this.pluginService) {
+            for (String pluginType : this.pluginService.keySet()) {
+                IPluginInConnectionService s = pluginService.get(pluginType);
+                Node node = s.connect(connectionIdentifier, params);
+                if (node != null) return node;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public Status disconnect(Node node) {
+        IPluginInConnectionService s = pluginService.get(node.getType());
+        if (s != null) return s.disconnect(node);
+        return new Status(StatusCode.NOTFOUND);
+    }
+
+    /**
+     * View Change notification
+     */
+    @Override
+    public void notifyClusterViewChanged() {
+        for (String pluginType : this.pluginService.keySet()) {
+            IPluginInConnectionService s = pluginService.get(pluginType);
+            s.notifyClusterViewChanged();
+        }
+    }
+
+    /**
+     * Node Disconnected from the node's master controller.
+     */
+    @Override
+    public void notifyNodeDisconnectFromMaster(Node node) {
+        for (String pluginType : this.pluginService.keySet()) {
+            IPluginInConnectionService s = pluginService.get(pluginType);
+            s.notifyNodeDisconnectFromMaster(node);
+        }
+    }
+}
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