dom/mdsal-dom-broker/src/main/java/org/opendaylight/mdsal/dom/broker/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.mdsal.dom.broker;
   9
  10 import static com.google.common.base.Preconditions.checkState;
  11
  12 import com.google.common.collect.ImmutableMap;
  13 import java.util.Collections;
  14 import java.util.EnumMap;
  15 import java.util.Map;
  16 import java.util.Map.Entry;
  17 import java.util.concurrent.atomic.AtomicLong;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.mdsal.common.api.TransactionChainListener;
  20 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  21 import org.opendaylight.mdsal.dom.api.DOMDataBrokerExtension;
  22 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
  24 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  25 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
  26 import org.opendaylight.mdsal.dom.spi.store.DOMStore;
  27 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
  28 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTreeChangePublisher;
  29 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public abstract class AbstractDOMDataBroker extends AbstractDOMForwardedTransactionFactory<DOMStore>
  34         implements DOMDataBroker, AutoCloseable {
  35     private static final Logger LOG = LoggerFactory.getLogger(AbstractDOMDataBroker.class);
  36
  37     private final AtomicLong txNum = new AtomicLong();
  38     private final AtomicLong chainNum = new AtomicLong();
  39     private final Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> extensions;
  40     private volatile AutoCloseable closeable;
  41
  42     protected AbstractDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
  43         super(datastores);
  44
  45         boolean treeChange = true;
  46         for (DOMStore ds : datastores.values()) {
  47             if (!(ds instanceof DOMStoreTreeChangePublisher)) {
  48                 treeChange = false;
  49                 break;
  50             }
  51         }
  52
  53         if (treeChange) {
  54             extensions = ImmutableMap.<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension>of(
  55                     DOMDataTreeChangeService.class, new DOMDataTreeChangeService() {
  56                         @Override
  57                         public <L extends DOMDataTreeChangeListener> ListenerRegistration<L>
  58                                 registerDataTreeChangeListener(final DOMDataTreeIdentifier treeId, final L listener) {
  59                             DOMStore publisher = getTxFactories().get(treeId.getDatastoreType());
  60                             checkState(publisher != null, "Requested logical data store is not available.");
  61
  62                             return ((DOMStoreTreeChangePublisher)publisher).registerTreeChangeListener(
  63                                     treeId.getRootIdentifier(), listener);
  64                             }
  65                         });
  66         } else {
  67             extensions = Collections.emptyMap();
  68         }
  69     }
  70
  71     public void setCloseable(final AutoCloseable closeable) {
  72         this.closeable = closeable;
  73     }
  74
  75     @SuppressWarnings("checkstyle:IllegalCatch")
  76     @Override
  77     public void close() {
  78         super.close();
  79
  80         if (closeable != null) {
  81             try {
  82                 closeable.close();
  83             } catch (Exception e) {
  84                 LOG.debug("Error closing instance", e);
  85             }
  86         }
  87     }
  88
  89     @Override
  90     protected Object newTransactionIdentifier() {
  91         return "DOM-" + txNum.getAndIncrement();
  92     }
  93
  94     @Override
  95     public Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> getSupportedExtensions() {
  96         return extensions;
  97     }
  98
  99     @Override
 100     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
 101         checkNotClosed();
 102
 103         final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains =
 104                 new EnumMap<>(LogicalDatastoreType.class);
 105         for (Entry<LogicalDatastoreType, DOMStore> entry : getTxFactories().entrySet()) {
 106             backingChains.put(entry.getKey(), entry.getValue().createTransactionChain());
 107         }
 108
 109         final long chainId = chainNum.getAndIncrement();
 110         LOG.debug("Transactoin chain {} created with listener {}, backing store chains {}", chainId, listener,
 111                 backingChains);
 112         return new DOMDataBrokerTransactionChainImpl(chainId, backingChains, this, listener);
 113     }
 114 }