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
  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 javax.annotation.Nonnull;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMDataBrokerExtension;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
  24 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
  25 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
  26 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  27 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
  28 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  29 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTreeChangePublisher;
  30 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 public abstract class AbstractDOMDataBroker extends AbstractDOMForwardedTransactionFactory<DOMStore>
  35        implements DOMDataBroker {
  36     private static final Logger LOG = LoggerFactory.getLogger(AbstractDOMDataBroker.class);
  37
  38     private final AtomicLong txNum = new AtomicLong();
  39     private final AtomicLong chainNum = new AtomicLong();
  40     private final Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> extensions;
  41     private volatile AutoCloseable closeable;
  42
  43     protected AbstractDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
  44         super(datastores);
  45
  46         boolean treeChange = true;
  47         for (DOMStore ds : datastores.values()) {
  48             if (!(ds instanceof DOMStoreTreeChangePublisher)) {
  49                 treeChange = false;
  50                 break;
  51             }
  52         }
  53
  54         if (treeChange) {
  55             extensions = ImmutableMap.<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension>of(
  56                     DOMDataTreeChangeService.class, new DOMDataTreeChangeService() {
  57                         @Nonnull
  58                         @Override
  59                         public <L extends DOMDataTreeChangeListener> ListenerRegistration<L>
  60                             registerDataTreeChangeListener(
  61                                     @Nonnull final DOMDataTreeIdentifier treeId, @Nonnull final L listener) {
  62                                 DOMStore publisher = getTxFactories().get(treeId.getDatastoreType());
  63                                 checkState(publisher != null,
  64                                            "Requested logical data store is not available.");
  65
  66                                 return ((DOMStoreTreeChangePublisher) publisher)
  67                                         .registerTreeChangeListener(treeId.getRootIdentifier(), listener);
  68                             }
  69                     });
  70         } else {
  71             extensions = Collections.emptyMap();
  72         }
  73     }
  74
  75     public void setCloseable(final AutoCloseable closeable) {
  76         this.closeable = closeable;
  77     }
  78
  79     @Override
  80     @SuppressWarnings("checkstyle:IllegalCatch")
  81     public void close() {
  82         super.close();
  83
  84         if (closeable != null) {
  85             try {
  86                 closeable.close();
  87             } catch (Exception e) {
  88                 LOG.debug("Error closing instance", e);
  89             }
  90         }
  91     }
  92
  93     @Override
  94     protected Object newTransactionIdentifier() {
  95         return "DOM-" + txNum.getAndIncrement();
  96     }
  97
  98     @Nonnull
  99     @Override
 100     public Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> getSupportedExtensions() {
 101         return extensions;
 102     }
 103
 104     @Override
 105     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
 106         checkNotClosed();
 107
 108         final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains = new EnumMap<>(
 109                 LogicalDatastoreType.class);
 110         for (Entry<LogicalDatastoreType, DOMStore> entry : getTxFactories().entrySet()) {
 111             backingChains.put(entry.getKey(), entry.getValue().createTransactionChain());
 112         }
 113
 114         final long chainId = chainNum.getAndIncrement();
 115         LOG.debug("Transactoin chain {} created with listener {}, backing store chains {}", chainId, listener,
 116                   backingChains);
 117         return new DOMDataBrokerTransactionChainImpl(chainId, backingChains, this, listener);
 118     }
 119 }