opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/AbstractDOMDataBroker.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. 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.md.sal.dom.broker.impl;
   9
  10 import static com.google.common.base.Preconditions.checkState;
  11 import java.util.EnumMap;
  12 import java.util.Map;
  13 import java.util.Map.Entry;
  14 import java.util.concurrent.atomic.AtomicLong;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMDataChangeListener;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  20 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
  21 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 public abstract class AbstractDOMDataBroker extends AbstractDOMForwardedTransactionFactory<DOMStore> implements DOMDataBroker, AutoCloseable {
  28     private static final Logger LOG = LoggerFactory.getLogger(AbstractDOMDataBroker.class);
  29
  30     private final AtomicLong txNum = new AtomicLong();
  31     private final AtomicLong chainNum = new AtomicLong();
  32     private volatile AutoCloseable closeable;
  33
  34     protected AbstractDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
  35         super(datastores);
  36     }
  37
  38     public void setCloseable(final AutoCloseable closeable) {
  39         this.closeable = closeable;
  40     }
  41
  42     @Override
  43     public void close() {
  44         super.close();
  45
  46         if(closeable != null) {
  47             try {
  48                 closeable.close();
  49             } catch(Exception e) {
  50                 LOG.debug("Error closing instance", e);
  51             }
  52         }
  53     }
  54
  55     @Override
  56     protected Object newTransactionIdentifier() {
  57         return "DOM-" + txNum.getAndIncrement();
  58     }
  59
  60     @Override
  61     public ListenerRegistration<DOMDataChangeListener> registerDataChangeListener(final LogicalDatastoreType store,
  62             final YangInstanceIdentifier path, final DOMDataChangeListener listener, final DataChangeScope triggeringScope) {
  63
  64         DOMStore potentialStore = getTxFactories().get(store);
  65         checkState(potentialStore != null, "Requested logical data store is not available.");
  66         return potentialStore.registerChangeListener(path, listener, triggeringScope);
  67     }
  68
  69     @Override
  70     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
  71         checkNotClosed();
  72
  73         final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains = new EnumMap<>(LogicalDatastoreType.class);
  74         for (Entry<LogicalDatastoreType, DOMStore> entry : getTxFactories().entrySet()) {
  75             backingChains.put(entry.getKey(), entry.getValue().createTransactionChain());
  76         }
  77
  78         final long chainId = chainNum.getAndIncrement();
  79         LOG.debug("Transactoin chain {} created with listener {}, backing store chains {}", chainId, listener,
  80                 backingChains);
  81         return new DOMDataBrokerTransactionChainImpl(chainId, backingChains, this, listener);
  82     }
  83 }