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.ActionProviderService;
  14 import org.opendaylight.mdsal.binding.api.ActionService;
  15 import org.opendaylight.mdsal.binding.api.BindingService;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.binding.api.DataTreeService;
  18 import org.opendaylight.mdsal.binding.api.MountPointService;
  19 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
  20 import org.opendaylight.mdsal.binding.api.NotificationService;
  21 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
  22 import org.opendaylight.mdsal.binding.api.RpcProviderService;
  23 import org.opendaylight.mdsal.binding.dom.adapter.spi.AdapterFactory;
  24 import org.opendaylight.mdsal.dom.api.DOMActionProviderService;
  25 import org.opendaylight.mdsal.dom.api.DOMActionService;
  26 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  27 import org.opendaylight.mdsal.dom.api.DOMDataTreeService;
  28 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
  29 import org.opendaylight.mdsal.dom.api.DOMNotificationPublishService;
  30 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  31 import org.opendaylight.mdsal.dom.api.DOMRpcProviderService;
  32 import org.opendaylight.mdsal.dom.api.DOMRpcService;
  33 import org.opendaylight.mdsal.dom.api.DOMService;
  34 import org.osgi.framework.BundleContext;
  35 import org.osgi.util.tracker.ServiceTracker;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * A component which watches the OSGi Service Registry for known {@link DOMService}s and publishes corresponding
  41  * {@link BindingService}s backed by them.
  42  *
  43  * @author Robert Varga
  44  */
  45 public final class DynamicBindingAdapter implements AutoCloseable {
  46     private static final Logger LOG = LoggerFactory.getLogger(DynamicBindingAdapter.class);
  47
  48     @GuardedBy("this")
  49     private List<AdaptingTracker<?, ?>> trackers;
  50
  51     public DynamicBindingAdapter(final AdapterFactory factory, final BundleContext ctx) {
  52         trackers = ImmutableList.of(
  53             new AdaptingTracker<>(ctx, DOMDataBroker.class, DataBroker.class, factory::createDataBroker),
  54             new AdaptingTracker<>(ctx, DOMDataTreeService.class, DataTreeService.class, factory::createDataTreeService),
  55             new AdaptingTracker<>(ctx, DOMMountPointService.class, MountPointService.class,
  56                     factory::createMountPointService),
  57             new AdaptingTracker<>(ctx, DOMNotificationService.class, NotificationService.class,
  58                     factory::createNotificationService),
  59             new AdaptingTracker<>(ctx, DOMNotificationPublishService.class, NotificationPublishService.class,
  60                     factory::createNotificationPublishService),
  61             new AdaptingTracker<>(ctx, DOMRpcService.class, RpcConsumerRegistry.class,
  62                     factory::createRpcConsumerRegistry),
  63             new AdaptingTracker<>(ctx, DOMRpcProviderService.class, RpcProviderService.class,
  64                     factory::createRpcProviderService),
  65             new AdaptingTracker<>(ctx, DOMActionService.class, ActionService.class, factory::createActionService),
  66             new AdaptingTracker<>(ctx, DOMActionProviderService.class, ActionProviderService.class,
  67                 factory::createActionProviderService));
  68
  69         LOG.debug("Starting {} DOMService trackers", trackers.size());
  70         trackers.forEach(ServiceTracker::open);
  71         LOG.info("{} DOMService trackers started", trackers.size());
  72     }
  73
  74     @Override
  75     public void close() {
  76         final List<AdaptingTracker<?, ?>> toClose;
  77         synchronized (this) {
  78             toClose = trackers;
  79             trackers = ImmutableList.of();
  80         }
  81
  82         LOG.debug("Stopping {} DOMService trackers", toClose.size());
  83         if (!toClose.isEmpty()) {
  84             toClose.forEach(AdaptingTracker::close);
  85             LOG.info("{} DOMService trackers stopped", toClose.size());
  86         }
  87     }
  88 }