opendaylight/md-sal/sal-dom-api/src/main/java/org/opendaylight/controller/sal/core/api/AbstractConsumer.java

   1 package org.opendaylight.controller.sal.core.api;
   2
   3 import java.util.Collection;
   4 import java.util.Collections;
   5
   6 import org.osgi.framework.BundleActivator;
   7 import org.osgi.framework.BundleContext;
   8 import org.osgi.framework.ServiceReference;
   9
  10 public abstract class AbstractConsumer implements Consumer, BundleActivator {
  11
  12     Broker broker;
  13     ServiceReference<Broker> brokerRef;
  14     @Override
  15     public final void start(BundleContext context) throws Exception {
  16         brokerRef = context.getServiceReference(Broker.class);
  17         broker = context.getService(brokerRef);
  18
  19         this.startImpl(context);
  20
  21         broker.registerConsumer(this,context);
  22     }
  23
  24     public abstract void startImpl(BundleContext context);
  25
  26     @Override
  27     public final void stop(BundleContext context) throws Exception {
  28         broker = null;
  29         if(brokerRef != null) {
  30             context.ungetService(brokerRef);
  31         }
  32     }
  33
  34
  35     @Override
  36     public Collection<ConsumerFunctionality> getConsumerFunctionality() {
  37         return Collections.emptySet();
  38     }
  39
  40 }