OpenDaylight Controller functional modules.

[controller.git] / opendaylight / containermanager / implementation / src / main / java / org / opendaylight / controller / containermanager / internal / Activator.java

diff --git a/opendaylight/containermanager/implementation/src/main/java/org/opendaylight/controller/containermanager/internal/Activator.java b/opendaylight/containermanager/implementation/src/main/java/org/opendaylight/controller/containermanager/internal/Activator.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.containermanager.internal;
+
+import org.opendaylight.controller.clustering.services.IClusterGlobalServices;
+import org.opendaylight.controller.containermanager.IContainerManager;
+import org.opendaylight.controller.sal.core.IContainerAware;
+import org.opendaylight.controller.sal.core.IContainer;
+import org.opendaylight.controller.sal.core.IContainerListener;
+import org.apache.felix.dm.Component;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
+
+public class Activator extends ComponentActivatorAbstractBase {
+    protected static final Logger logger = LoggerFactory
+            .getLogger(Activator.class);
+
+    /**
+     * Function called when the activator starts just after some
+     * initializations are done by the
+     * ComponentActivatorAbstractBase.
+     *
+     */
+    public void init() {
+    }
+
+    /**
+     * Function called when the activator stops just before the
+     * cleanup done by ComponentActivatorAbstractBase
+     *
+     */
+    public void destroy() {
+    }
+
+    /**
+     * Function that is used to communicate to dependency manager the
+     * list of known implementations for services inside a container
+     *
+     *
+     * @return An array containing all the CLASS objects that will be
+     * instantiated in order to get an fully working implementation
+     * Object
+     */
+    public Object[] getImplementations() {
+        Object[] res = { ContainerImpl.class };
+        return res;
+    }
+
+    /**
+     * Function that is called when configuration of the dependencies
+     * is required.
+     *
+     * @param c dependency manager Component object, used for
+     * configuring the dependencies exported and imported
+     * @param imp Implementation class that is being configured,
+     * needed as long as the same routine can configure multiple
+     * implementations
+     * @param containerName The containerName being configured, this allow
+     * also optional per-container different behavior if needed, usually
+     * should not be the case though.
+     */
+    public void configureInstance(Component c, Object imp, String containerName) {
+        if (imp.equals(ContainerImpl.class)) {
+            // export the service
+            c.setInterface(new String[] { IContainer.class.getName() }, null);
+        }
+    }
+
+    /**
+     * Method which tells how many Global implementations are
+     * supported by the bundle. This way we can tune the number of
+     * components created. This components will be created ONLY at the
+     * time of bundle startup and will be destroyed only at time of
+     * bundle destruction, this is the major difference with the
+     * implementation retrieved via getImplementations where all of
+     * them are assumed to be in a container!
+     *
+     *
+     * @return The list of implementations the bundle will support,
+     * in Global version
+     */
+    protected Object[] getGlobalImplementations() {
+        Object[] res = { ContainerManager.class };
+        return res;
+    }
+
+    /**
+     * Configure the dependency for a given instance Global
+     *
+     * @param c Component assigned for this instance, this will be
+     * what will be used for configuration
+     * @param imp implementation to be configured
+     * @param containerName container on which the configuration happens
+     */
+    protected void configureGlobalInstance(Component c, Object imp) {
+        if (imp.equals(ContainerManager.class)) {
+
+            // export the service
+            c.setInterface(new String[] { IContainerManager.class.getName() },
+                    null);
+
+            c.add(createServiceDependency().setService(
+                    IClusterGlobalServices.class).setCallbacks(
+                    "setClusterServices", "unsetClusterServices").setRequired(
+                    true));
+
+            // Key kick-starter for container creation in each component
+            c.add(createServiceDependency().setService(IContainerAware.class)
+                    .setCallbacks("setIContainerAware", "unsetIContainerAware")
+                    .setRequired(false));
+
+            // Optional interface expected to be exported by the
+            // protocol plugins to setup proper filtering based on
+            // slicing events
+            c.add(createServiceDependency()
+                    .setService(IContainerListener.class).setCallbacks(
+                            "setIContainerListener", "unsetIContainerListener")
+                    .setRequired(false));
+        }
+    }
+}