opendaylight/topologymanager/src/main/java/org/opendaylight/controller/topologymanager/internal/Activator.java

   1
   2 /*
   3  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   4  *
   5  * This program and the accompanying materials are made available under the
   6  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   7  * and is available at http://www.eclipse.org/legal/epl-v10.html
   8  */
   9
  10 package org.opendaylight.controller.topologymanager.internal;
  11
  12 import org.apache.felix.dm.Component;
  13
  14 import org.opendaylight.controller.clustering.services.IClusterContainerServices;
  15 import org.opendaylight.controller.configuration.IConfigurationContainerAware;
  16 import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
  17 import org.opendaylight.controller.sal.topology.IListenTopoUpdates;
  18 import org.opendaylight.controller.sal.topology.ITopologyService;
  19 import org.opendaylight.controller.topologymanager.ITopologyManager;
  20 import org.opendaylight.controller.topologymanager.ITopologyManagerAware;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class Activator extends ComponentActivatorAbstractBase {
  25     protected static final Logger logger = LoggerFactory
  26             .getLogger(Activator.class);
  27
  28     /**
  29      * Function called when the activator starts just after some
  30      * initializations are done by the
  31      * ComponentActivatorAbstractBase.
  32      *
  33      */
  34     public void init() {
  35
  36     }
  37
  38     /**
  39      * Function called when the activator stops just before the
  40      * cleanup done by ComponentActivatorAbstractBase
  41      *
  42      */
  43     public void destroy() {
  44
  45     }
  46
  47     /**
  48      * Function that is used to communicate to dependency manager the
  49      * list of known implementations for services inside a container
  50      *
  51      *
  52      * @return An array containing all the CLASS objects that will be
  53      * instantiated in order to get an fully working implementation
  54      * Object
  55      */
  56     public Object[] getImplementations() {
  57         Object[] res = { TopologyManagerImpl.class };
  58         return res;
  59     }
  60
  61     /**
  62      * Function that is called when configuration of the dependencies
  63      * is required.
  64      *
  65      * @param c dependency manager Component object, used for
  66      * configuring the dependencies exported and imported
  67      * @param imp Implementation class that is being configured,
  68      * needed as long as the same routine can configure multiple
  69      * implementations
  70      * @param containerName The containerName being configured, this allow
  71      * also optional per-container different behavior if needed, usually
  72      * should not be the case though.
  73      */
  74     public void configureInstance(Component c, Object imp, String containerName) {
  75         if (imp.equals(TopologyManagerImpl.class)) {
  76             // export the service needed to listen to topology updates
  77             c.setInterface(new String[] { IListenTopoUpdates.class.getName(),
  78                     ITopologyManager.class.getName(),
  79                     IConfigurationContainerAware.class.getName() }, null);
  80
  81             c.add(createContainerServiceDependency(containerName).setService(
  82                     ITopologyService.class).setCallbacks("setTopoService",
  83                     "unsetTopoService").setRequired(true));
  84
  85             // These are all the listeners for a topology manager
  86             // updates, there could be many or none
  87             c.add(createContainerServiceDependency(containerName).setService(
  88                     ITopologyManagerAware.class).setCallbacks(
  89                     "setTopologyManagerAware", "unsetTopologyManagerAware")
  90                     .setRequired(false));
  91
  92             c.add(createContainerServiceDependency(containerName).setService(
  93                     IClusterContainerServices.class).setCallbacks(
  94                     "setClusterContainerService",
  95                     "unsetClusterContainerService").setRequired(true));
  96         }
  97     }
  98 }