opendaylight/md-sal/messagebus-impl/src/main/java/org/opendaylight/controller/messagebus/app/impl/OSGiEventSourceRegistry.java

   1 /*
   2  * Copyright (c) 2020 PANTHEON.tech, 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.controller.messagebus.app.impl;
   9
  10 import com.google.common.annotations.Beta;
  11 import org.opendaylight.controller.messagebus.spi.EventSource;
  12 import org.opendaylight.controller.messagebus.spi.EventSourceRegistration;
  13 import org.opendaylight.controller.messagebus.spi.EventSourceRegistry;
  14 import org.opendaylight.mdsal.binding.api.DataBroker;
  15 import org.opendaylight.mdsal.binding.api.RpcConsumerRegistry;
  16 import org.opendaylight.mdsal.binding.api.RpcProviderService;
  17 import org.osgi.service.component.annotations.Activate;
  18 import org.osgi.service.component.annotations.Component;
  19 import org.osgi.service.component.annotations.Deactivate;
  20 import org.osgi.service.component.annotations.Reference;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 @Beta
  25 @Component(immediate = true)
  26 public final class OSGiEventSourceRegistry implements EventSourceRegistry {
  27     private static final Logger LOG = LoggerFactory.getLogger(OSGiEventSourceRegistry.class);
  28
  29     @Reference
  30     DataBroker dataBroker;
  31     @Reference
  32     RpcConsumerRegistry rpcConsumerRegistry;
  33     @Reference
  34     RpcProviderService rpcProviderService;
  35
  36     private EventSourceTopology delegate;
  37
  38     @Override
  39     public <T extends EventSource> EventSourceRegistration<T> registerEventSource(final T eventSource) {
  40         return delegate.registerEventSource(eventSource);
  41     }
  42
  43     @Override
  44     public void close() {
  45         // Intentiational no-op
  46     }
  47
  48     @Activate
  49     void activate() {
  50         delegate = new EventSourceTopology(dataBroker, rpcProviderService, rpcConsumerRegistry);
  51         LOG.info("Event Source Registry started");
  52     }
  53
  54     @Deactivate
  55     void deactivate() {
  56         LOG.info("Event Source Registry stopping");
  57         delegate.close();
  58         LOG.info("Event Source Registry stopped");
  59     }
  60 }