opendaylight/config/config-persister-feature-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/ConfigPusherCustomizer.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, 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 package org.opendaylight.controller.configpusherfeature.internal;
   9
  10 import org.apache.karaf.features.FeaturesService;
  11 import org.opendaylight.controller.config.persist.api.ConfigPusher;
  12 import org.osgi.framework.BundleContext;
  13 import org.osgi.framework.ServiceReference;
  14 import org.osgi.util.tracker.ServiceTracker;
  15 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 public class ConfigPusherCustomizer implements ServiceTrackerCustomizer<ConfigPusher, ConfigPusher>, AutoCloseable {
  20     private static final Logger LOG = LoggerFactory.getLogger(ConfigPusherCustomizer.class);
  21     private ConfigFeaturesListener configFeaturesListener = null;
  22     private FeatureServiceCustomizer featureServiceCustomizer = null;
  23     private ServiceTracker<FeaturesService, FeaturesService> fsst = null;
  24
  25     @Override
  26     public ConfigPusher addingService(final ServiceReference<ConfigPusher> configPusherServiceReference) {
  27         LOG.trace("Got ConfigPusherCustomizer.addingService {}", configPusherServiceReference);
  28         BundleContext bc = configPusherServiceReference.getBundle().getBundleContext();
  29         ConfigPusher cpService = bc.getService(configPusherServiceReference);
  30         featureServiceCustomizer = new FeatureServiceCustomizer(cpService);
  31         fsst = new ServiceTracker<>(bc, FeaturesService.class.getName(), featureServiceCustomizer);
  32         fsst.open();
  33         return cpService;
  34     }
  35
  36     @Override
  37     public void modifiedService(final ServiceReference<ConfigPusher> configPusherServiceReference,
  38                                 final ConfigPusher configPusher) {
  39         // we don't care if the properties change
  40     }
  41
  42     @Override
  43     public void removedService(final ServiceReference<ConfigPusher> configPusherServiceReference,
  44                                final ConfigPusher configPusher) {
  45         this.close();
  46     }
  47
  48     @Override
  49     public void close() {
  50         if (fsst != null) {
  51             fsst.close();
  52             fsst = null;
  53         }
  54         if (configFeaturesListener != null) {
  55             configFeaturesListener.close();
  56             configFeaturesListener = null;
  57         }
  58         if (featureServiceCustomizer != null) {
  59             featureServiceCustomizer.close();
  60             featureServiceCustomizer = null;
  61         }
  62     }
  63 }