lockmanager/lockmanager-impl/src/main/java/org/opendaylight/genius/lockmanager/LockListener.java

   1 /*
   2  * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. 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.genius.lockmanager;
   9
  10 import java.util.concurrent.CompletableFuture;
  11 import javax.annotation.PostConstruct;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.Locks;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.lockmanager.rev160413.locks.Lock;
  20 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 @Singleton
  25 public class LockListener extends AsyncClusteredDataTreeChangeListenerBase<Lock, LockListener>
  26         implements AutoCloseable {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(LockListener.class);
  29     private final DataBroker broker;
  30     private final LockManager lockManager;
  31
  32     @Inject
  33     public LockListener(DataBroker broker, LockManager lockManager) {
  34         super(Lock.class, LockListener.class);
  35         this.broker = broker;
  36         this.lockManager = lockManager;
  37     }
  38
  39     @PostConstruct
  40     public void start() throws Exception {
  41         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  42         LOG.info("LockListener listener Started");
  43     }
  44
  45     @Override
  46     protected InstanceIdentifier<Lock> getWildCardPath() {
  47         return InstanceIdentifier.create(Locks.class).child(Lock.class);
  48     }
  49
  50     @Override
  51     protected void remove(InstanceIdentifier<Lock> key, Lock remove) {
  52         String lockName = remove.getLockName();
  53         LOG.debug("Received remove for lock {} : {}", lockName, remove);
  54         CompletableFuture<Void> lock = lockManager.getSynchronizerForLock(lockName);
  55         if (lock != null) {
  56             lock.complete(null);
  57         }
  58     }
  59
  60     @Override
  61     protected void update(InstanceIdentifier<Lock> key, Lock dataObjectModificationBefore,
  62             Lock dataObjectModificationAfter) {
  63     }
  64
  65     @Override
  66     protected void add(InstanceIdentifier<Lock> key, Lock add) {
  67         LOG.debug("Received add for lock {} : {}", add.getLockName(), add);
  68     }
  69
  70     @Override
  71     protected LockListener getDataTreeChangeListener() {
  72         return this;
  73     }
  74
  75 }