opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/StatisticsManagerActivator.java

   1 /*
   2  * Copyright IBM Corporation, 2013.  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.controller.md.statistics.manager;
  10
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.statistics.manager.impl.StatisticsManagerImpl;
  13 import org.opendaylight.controller.sal.binding.api.AbstractBindingAwareProvider;
  14 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
  15 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
  16 import org.osgi.framework.BundleContext;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 import com.google.common.annotations.VisibleForTesting;
  21
  22 /**
  23  * Statistics Manager Activator
  24  *
  25  * OSGi bundle activator
  26  *
  27  */
  28 public class StatisticsManagerActivator extends AbstractBindingAwareProvider {
  29
  30     private final static Logger LOG = LoggerFactory.getLogger(StatisticsManagerActivator.class);
  31
  32     /* TODO move it to ConfigSubsystem */
  33     private static final long DEFAULT_MIN_REQUEST_NET_MONITOR_INTERVAL = 3000L;
  34     private static final int MAX_NODES_FOR_COLLECTOR = 8;
  35
  36     private StatisticsManager statsProvider;
  37
  38     @Override
  39     public void onSessionInitiated(final ProviderContext session) {
  40         LOG.info("StatisticsManagerActivator initialization.");
  41         try {
  42             final DataBroker dataBroker = session.getSALService(DataBroker.class);
  43             final NotificationProviderService notifService =
  44                     session.getSALService(NotificationProviderService.class);
  45             statsProvider = new StatisticsManagerImpl(dataBroker, MAX_NODES_FOR_COLLECTOR);
  46             statsProvider.start(notifService, session, DEFAULT_MIN_REQUEST_NET_MONITOR_INTERVAL);
  47             LOG.info("StatisticsManagerActivator started successfully.");
  48         }
  49         catch (final Exception e) {
  50             LOG.error("Unexpected error by initialization of StatisticsManagerActivator", e);
  51             stopImpl(null);
  52         }
  53     }
  54
  55     @VisibleForTesting
  56     StatisticsManager getStatisticManager() {
  57         return statsProvider;
  58     }
  59
  60     @Override
  61     protected void stopImpl(final BundleContext context) {
  62         if (statsProvider != null) {
  63             try {
  64                 statsProvider.close();
  65             }
  66             catch (final Exception e) {
  67                 LOG.error("Unexpected error by stopping StatisticsManagerActivator", e);
  68             }
  69             statsProvider = null;
  70         }
  71         LOG.info("StatisticsManagerActivator stoped.");
  72     }
  73 }