dom/mdsal-dom-spi/src/main/java/org/opendaylight/mdsal/dom/spi/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.spi;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import java.util.EnumMap;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.concurrent.atomic.AtomicLong;
  15 import org.eclipse.jdt.annotation.NonNull;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
  18 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
  19 import org.opendaylight.mdsal.dom.spi.store.DOMStore;
  20 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
  21 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTreeChangePublisher;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public abstract class AbstractDOMDataBroker extends AbstractDOMForwardedTransactionFactory<DOMStore>
  26         implements PingPongMergingDOMDataBroker {
  27     private static final Logger LOG = LoggerFactory.getLogger(AbstractDOMDataBroker.class);
  28
  29     private final AtomicLong txNum = new AtomicLong();
  30     private final AtomicLong chainNum = new AtomicLong();
  31     private final @NonNull List<Extension> supportedExtensions;
  32
  33     protected AbstractDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
  34         super(datastores);
  35
  36         final var builder = ImmutableList.<Extension>builder();
  37         if (isSupported(datastores, DOMStoreTreeChangePublisher.class)) {
  38             builder.add((DOMDataTreeChangeService) (treeId, listener) -> {
  39                 final var dsType = treeId.datastore();
  40                 if (getTxFactories().get(dsType) instanceof DOMStoreTreeChangePublisher publisher) {
  41                     return publisher.registerTreeChangeListener(treeId.path(), listener);
  42                 }
  43                 throw new IllegalStateException("Publisher for " + dsType + " data store is not available");
  44             });
  45         }
  46         if (isSupported(datastores, CommitCohortExtension.class)) {
  47             builder.add((CommitCohortExtension) (path, cohort) -> {
  48                 final var dsType = path.datastore();
  49                 if (getTxFactories().get(dsType) instanceof CommitCohortExtension extension) {
  50                     return extension.registerCommitCohort(path, cohort);
  51                 }
  52                 throw new IllegalStateException("Cohort registry for " + dsType + " data store is not available");
  53             });
  54         }
  55
  56         supportedExtensions = builder.build();
  57     }
  58
  59     @Override
  60     public final List<Extension> supportedExtensions() {
  61         return supportedExtensions;
  62     }
  63
  64     @Override
  65     public DOMTransactionChain createTransactionChain() {
  66         checkNotClosed();
  67
  68         final var delegates = new EnumMap<LogicalDatastoreType, DOMStoreTransactionChain>(LogicalDatastoreType.class);
  69         for (var entry : getTxFactories().entrySet()) {
  70             delegates.put(entry.getKey(), entry.getValue().createTransactionChain());
  71         }
  72
  73         final long chainId = chainNum.getAndIncrement();
  74         LOG.debug("Transactoin chain {} created, backing store chains {}", chainId, delegates);
  75         return new DOMDataBrokerTransactionChainImpl(chainId, delegates, this);
  76     }
  77
  78     @Override
  79     protected final Object newTransactionIdentifier() {
  80         return "DOM-" + txNum.getAndIncrement();
  81     }
  82
  83     private static boolean isSupported(final Map<LogicalDatastoreType, DOMStore> datastores,
  84             final Class<?> expDOMStoreInterface) {
  85         return datastores.values().stream().allMatch(expDOMStoreInterface::isInstance);
  86     }
  87 }