--- /dev/null
+/*
+ * Copyright IBM Corporation, 2013. 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.samples.loadbalancer.internal;
+
+import java.util.Dictionary;
+import java.util.Hashtable;
+
+import org.apache.felix.dm.Component;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.opendaylight.controller.forwardingrulesmanager.IForwardingRulesManager;
+import org.opendaylight.controller.hosttracker.IfIptoHost;
+import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
+import org.opendaylight.controller.sal.packet.IDataPacketService;
+import org.opendaylight.controller.sal.packet.IListenDataPacket;
+import org.opendaylight.controller.sal.routing.IRouting;
+import org.opendaylight.controller.samples.loadbalancer.IConfigManager;
+
+/**
+ * Main application activator class for registering the dependencies and
+ * initialising the load balancer application.
+ *
+ */
+
+public class Activator extends ComponentActivatorAbstractBase {
+
+ /*
+ * Logger instance
+ */
+ 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 = { LoadBalancerService.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(LoadBalancerService.class)) {
+ // export the service
+ Dictionary<String, String> props = new Hashtable<String, String>();
+ props.put("salListenerName", "loadbalancer");
+
+ c.setInterface(new String[] { IListenDataPacket.class.getName(),
+ IConfigManager.class.getName()}, props);
+
+ c.add(createContainerServiceDependency(containerName).setService(
+ IDataPacketService.class).setCallbacks(
+ "setDataPacketService", "unsetDataPacketService")
+ .setRequired(true));
+
+ c.add(createContainerServiceDependency(containerName).setService(
+ IRouting.class).setCallbacks("setRouting", "unsetRouting")
+ .setRequired(false));
+
+ c.add(createContainerServiceDependency(containerName).setService(
+ IfIptoHost.class).setCallbacks("setHostTracker",
+ "unsetHostTracker").setRequired(true));
+
+ c.add(createContainerServiceDependency(containerName).setService(
+ IForwardingRulesManager.class).setCallbacks(
+ "setForwardingRulesManager", "unsetForwardingRulesManager")
+ .setRequired(true));
+ }
+ }
+
+ /**
+ * 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() {
+ return null;
+ }
+
+ /**
+ * 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) {
+ }
+}