affinity/implementation/src/main/java/org/opendaylight/affinity/affinity/internal/Activator.java

   1 /*
   2  * Copyright (c) 2013 Plexxi, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.affinity.affinity.internal;
  10
  11 import java.util.Dictionary;
  12 import java.util.HashSet;
  13 import java.util.Hashtable;
  14 import java.util.Set;
  15
  16 import org.apache.felix.dm.Component;
  17 import org.opendaylight.controller.clustering.services.ICacheUpdateAware;
  18 import org.opendaylight.controller.clustering.services.IClusterContainerServices;
  19 import org.opendaylight.controller.configuration.IConfigurationContainerAware;
  20 import org.opendaylight.controller.hosttracker.IfIptoHost;
  21 import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
  22 import org.opendaylight.affinity.affinity.IAffinityManager;
  23 import org.opendaylight.affinity.affinity.IAffinityManagerAware;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * AffinityManager Bundle Activator
  29  *
  30  *
  31  */
  32 public class Activator extends ComponentActivatorAbstractBase {
  33     protected static final Logger logger = LoggerFactory
  34             .getLogger(Activator.class);
  35
  36     /**
  37      * Function called when the activator starts just after some
  38      * initializations are done by the
  39      * ComponentActivatorAbstractBase.
  40      *
  41      */
  42     public void init() {
  43
  44     }
  45
  46     /**
  47      * Function called when the activator stops just before the
  48      * cleanup done by ComponentActivatorAbstractBase
  49      *
  50      */
  51     public void destroy() {
  52
  53     }
  54
  55     /**
  56      * Function that is used to communicate to dependency manager the
  57      * list of known implementations for services inside a container
  58      *
  59      *
  60      * @return An array containing all the CLASS objects that will be
  61      * instantiated in order to get an fully working implementation
  62      * Object
  63      */
  64     public Object[] getImplementations() {
  65         Object[] res = { AffinityManagerImpl.class };
  66         return res;
  67     }
  68
  69     /**
  70      * Function that is called when configuration of the dependencies
  71      * is required.
  72      *
  73      * @param c dependency manager Component object, used for
  74      * configuring the dependencies exported and imported
  75      * @param imp Implementation class that is being configured,
  76      * needed as long as the same routine can configure multiple
  77      * implementations
  78      * @param containerName The containerName being configured, this allow
  79      * also optional per-container different behavior if needed, usually
  80      * should not be the case though.
  81      */
  82     public void configureInstance(Component c, Object imp, String containerName) {
  83         if (imp.equals(AffinityManagerImpl.class)) {
  84             Dictionary<String, Set<String>> props = new Hashtable<String, Set<String>>();
  85             Set<String> propSet = new HashSet<String>();
  86             propSet.add("affinitymanager.configSaveEvent");
  87             props.put("cachenames", propSet);
  88             // export the service
  89             c.setInterface(new String[] {
  90                     IAffinityManager.class.getName(),
  91                     ICacheUpdateAware.class.getName(),
  92                     IConfigurationContainerAware.class.getName() }, props);
  93
  94             // Now lets add a service dependency to make sure the
  95             // provider of service exists
  96             c.add(createContainerServiceDependency(containerName).setService(
  97                     IAffinityManagerAware.class).setCallbacks(
  98                     "setAffinityManagerAware", "unsetAffinityManagerAware")
  99                     .setRequired(false));
 100             c.add(createContainerServiceDependency(containerName).setService(
 101                     IClusterContainerServices.class).setCallbacks(
 102                     "setClusterContainerService",
 103                     "unsetClusterContainerService").setRequired(true));
 104             c.add(createContainerServiceDependency(containerName).setService(IfIptoHost.class)
 105                   .setCallbacks("setHostTracker", "unsetHostTracker").setRequired(true));
 106         }
 107     }
 108 }