binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/osgi/DynamicBindingAdapter.java

   1 /*
   2  * Copyright (c) 2018 Pantheon Technologies, s.r.o. 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.mdsal.binding.dom.adapter.osgi;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import java.util.List;
  12 import javax.annotation.concurrent.GuardedBy;
  13 import org.opendaylight.mdsal.binding.api.BindingService;
  14 import org.opendaylight.mdsal.binding.api.DataBroker;
  15 import org.opendaylight.mdsal.binding.api.DataTreeService;
  16 import org.opendaylight.mdsal.binding.api.MountPointService;
  17 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
  18 import org.opendaylight.mdsal.binding.api.NotificationService;
  19 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
  20 import org.opendaylight.mdsal.binding.api.RpcProviderService;
  21 import org.opendaylight.mdsal.binding.dom.adapter.spi.AdapterFactory;
  22 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeService;
  24 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
  25 import org.opendaylight.mdsal.dom.api.DOMNotificationPublishService;
  26 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  27 import org.opendaylight.mdsal.dom.api.DOMRpcProviderService;
  28 import org.opendaylight.mdsal.dom.api.DOMRpcService;
  29 import org.opendaylight.mdsal.dom.api.DOMService;
  30 import org.osgi.framework.BundleContext;
  31 import org.osgi.util.tracker.ServiceTracker;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * A component which watches the OSGi Service Registry for known {@link DOMService}s and publishes corresponding
  37  * {@link BindingService}s backed by them.
  38  *
  39  * @author Robert Varga
  40  */
  41 public final class DynamicBindingAdapter implements AutoCloseable {
  42     private static final Logger LOG = LoggerFactory.getLogger(DynamicBindingAdapter.class);
  43
  44     @GuardedBy("this")
  45     private List<AdaptingTracker<?, ?>> trackers;
  46
  47     public DynamicBindingAdapter(final AdapterFactory factory, final BundleContext ctx) {
  48         trackers = ImmutableList.of(
  49             new AdaptingTracker<>(ctx, DOMDataBroker.class, DataBroker.class, factory::createDataBroker),
  50             new AdaptingTracker<>(ctx, DOMDataTreeService.class, DataTreeService.class, factory::createDataTreeService),
  51             new AdaptingTracker<>(ctx, DOMMountPointService.class, MountPointService.class,
  52                     factory::createMountPointService),
  53             new AdaptingTracker<>(ctx, DOMNotificationService.class, NotificationService.class,
  54                     factory::createNotificationService),
  55             new AdaptingTracker<>(ctx, DOMNotificationPublishService.class, NotificationPublishService.class,
  56                     factory::createNotificationPublishService),
  57             new AdaptingTracker<>(ctx, DOMRpcService.class, RpcConsumerRegistry.class,
  58                     factory::createRpcConsumerRegistry),
  59             new AdaptingTracker<>(ctx, DOMRpcProviderService.class, RpcProviderService.class,
  60                     factory::createRpcProviderService));
  61
  62         LOG.debug("Starting {} DOMService trackers", trackers.size());
  63         trackers.forEach(ServiceTracker::open);
  64         LOG.info("{} DOMService trackers started", trackers.size());
  65     }
  66
  67     @Override
  68     public void close() {
  69         final List<AdaptingTracker<?, ?>> toClose;
  70         synchronized (this) {
  71             toClose = trackers;
  72             trackers = ImmutableList.of();
  73         }
  74
  75         LOG.debug("Stopping {} DOMService trackers", toClose.size());
  76         if (!toClose.isEmpty()) {
  77             toClose.forEach(AdaptingTracker::close);
  78             LOG.info("{} DOMService trackers stopped", toClose.size());
  79         }
  80     }
  81 }