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.DOMDataTreeCommitCohortRegistry;
  19 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
  20 import org.opendaylight.mdsal.dom.spi.store.DOMStore;
  21 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
  22 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTreeChangePublisher;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public abstract class AbstractDOMDataBroker extends AbstractDOMForwardedTransactionFactory<DOMStore>
  27         implements PingPongMergingDOMDataBroker {
  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 final @NonNull List<Extension> supportedExtensions;
  33
  34     protected AbstractDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
  35         super(datastores);
  36
  37         final var builder = ImmutableList.<Extension>builder();
  38         if (isSupported(datastores, DOMStoreTreeChangePublisher.class)) {
  39             builder.add((DOMDataTreeChangeService) (treeId, listener) -> {
  40                 final var dsType = treeId.datastore();
  41                 if (getTxFactories().get(dsType) instanceof DOMStoreTreeChangePublisher publisher) {
  42                     return publisher.registerTreeChangeListener(treeId.path(), listener);
  43                 }
  44                 throw new IllegalStateException("Publisher for " + dsType + " data store is not available");
  45             });
  46         }
  47         if (isSupported(datastores, DOMDataTreeCommitCohortRegistry.class)) {
  48             builder.add((DOMDataTreeCommitCohortRegistry) (path, cohort) -> {
  49                 final var dsType = path.datastore();
  50                 if (getTxFactories().get(dsType) instanceof DOMDataTreeCommitCohortRegistry registry) {
  51                     return registry.registerCommitCohort(path, cohort);
  52                 }
  53                 throw new IllegalStateException("Cohort registry for " + dsType + " data store is not available");
  54             });
  55         }
  56
  57         supportedExtensions = builder.build();
  58     }
  59
  60     @Override
  61     public final List<Extension> supportedExtensions() {
  62         return supportedExtensions;
  63     }
  64
  65     @Override
  66     public DOMTransactionChain createTransactionChain() {
  67         checkNotClosed();
  68
  69         final var delegates = new EnumMap<LogicalDatastoreType, DOMStoreTransactionChain>(LogicalDatastoreType.class);
  70         for (var entry : getTxFactories().entrySet()) {
  71             delegates.put(entry.getKey(), entry.getValue().createTransactionChain());
  72         }
  73
  74         final long chainId = chainNum.getAndIncrement();
  75         LOG.debug("Transactoin chain {} created, backing store chains {}", chainId, delegates);
  76         return new DOMDataBrokerTransactionChainImpl(chainId, delegates, this);
  77     }
  78
  79     @Override
  80     protected final Object newTransactionIdentifier() {
  81         return "DOM-" + txNum.getAndIncrement();
  82     }
  83
  84     private static boolean isSupported(final Map<LogicalDatastoreType, DOMStore> datastores,
  85             final Class<?> expDOMStoreInterface) {
  86         return datastores.values().stream().allMatch(expDOMStoreInterface::isInstance);
  87     }
  88 }