2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.mdsal.dom.broker;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.base.Preconditions;
13 import com.google.common.util.concurrent.FluentFuture;
14 import com.google.common.util.concurrent.FutureCallback;
15 import com.google.common.util.concurrent.MoreExecutors;
16 import java.util.Collection;
18 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
19 import java.util.concurrent.atomic.AtomicLong;
20 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
21 import org.opendaylight.mdsal.common.api.CommitInfo;
22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
23 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
24 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
25 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
26 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
27 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
32 * NormalizedNode implementation of {@link org.opendaylight.mdsal.common.api.TransactionChain} which is backed
33 * by several {@link DOMStoreTransactionChain} differentiated by provided
34 * {@link org.opendaylight.mdsal.common.api.LogicalDatastoreType} type.
37 final class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTransactionFactory<DOMStoreTransactionChain>
38 implements DOMTransactionChain {
46 private static final AtomicIntegerFieldUpdater<DOMDataBrokerTransactionChainImpl> COUNTER_UPDATER =
47 AtomicIntegerFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, "counter");
48 private static final AtomicReferenceFieldUpdater<DOMDataBrokerTransactionChainImpl, State> STATE_UPDATER =
49 AtomicReferenceFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, State.class, "state");
50 private static final Logger LOG = LoggerFactory.getLogger(DOMDataBrokerTransactionChainImpl.class);
51 private final AtomicLong txNum = new AtomicLong();
52 private final AbstractDOMDataBroker broker;
53 private final DOMTransactionChainListener listener;
54 private final long chainId;
56 private volatile State state = State.RUNNING;
57 private volatile int counter = 0;
60 *Constructor with args.
63 * ID of transaction chain
65 * Backing {@link DOMStoreTransactionChain}s.
67 * Commit Coordinator which should be used to coordinate commits
69 * produced by this chain.
71 * Listener, which listens on transaction chain events.
72 * @throws NullPointerException
73 * If any of arguments is null.
75 DOMDataBrokerTransactionChainImpl(final long chainId,
76 final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
77 final AbstractDOMDataBroker broker, final DOMTransactionChainListener listener) {
79 this.chainId = chainId;
80 this.broker = requireNonNull(broker);
81 this.listener = requireNonNull(listener);
84 private void checkNotFailed() {
85 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
89 protected Object newTransactionIdentifier() {
90 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
94 protected FluentFuture<? extends CommitInfo> commit(final DOMDataTreeWriteTransaction transaction,
95 final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
99 final FluentFuture<? extends CommitInfo> ret = broker.commit(transaction, cohorts);
101 COUNTER_UPDATER.incrementAndGet(this);
102 ret.addCallback(new FutureCallback<CommitInfo>() {
104 public void onSuccess(final CommitInfo result) {
105 transactionCompleted();
109 public void onFailure(final Throwable throwable) {
110 transactionFailed(transaction, throwable);
112 }, MoreExecutors.directExecutor());
118 public void close() {
119 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
121 LOG.debug("Chain {} is no longer running", this);
126 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
135 private void finishClose() {
136 state = State.CLOSED;
137 listener.onTransactionChainSuccessful(this);
140 private void transactionCompleted() {
141 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
146 private void transactionFailed(final DOMDataTreeWriteTransaction tx, final Throwable cause) {
147 state = State.FAILED;
148 LOG.debug("Transaction chain {} failed.", this, cause);
149 listener.onTransactionChainFailed(this, tx, cause);