2 * Copyright (c) 2015 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
9 package org.opendaylight.controller.cluster.databroker;
11 import com.google.common.base.Preconditions;
12 import com.google.common.util.concurrent.FluentFuture;
13 import com.google.common.util.concurrent.FutureCallback;
14 import com.google.common.util.concurrent.MoreExecutors;
15 import java.util.Collection;
17 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
18 import java.util.concurrent.atomic.AtomicLong;
19 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
20 import org.opendaylight.mdsal.common.api.CommitInfo;
21 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
22 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
23 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
24 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
25 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
26 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
30 final class DOMBrokerTransactionChain extends AbstractDOMTransactionFactory<DOMStoreTransactionChain>
31 implements DOMTransactionChain {
39 private static final AtomicIntegerFieldUpdater<DOMBrokerTransactionChain> COUNTER_UPDATER =
40 AtomicIntegerFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, "counter");
41 private static final AtomicReferenceFieldUpdater<DOMBrokerTransactionChain, State> STATE_UPDATER =
42 AtomicReferenceFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, State.class, "state");
43 private static final Logger LOG = LoggerFactory.getLogger(DOMBrokerTransactionChain.class);
44 private final AtomicLong txNum = new AtomicLong();
45 private final AbstractDOMBroker broker;
46 private final DOMTransactionChainListener listener;
47 private final long chainId;
49 private volatile State state = State.RUNNING;
50 private volatile int counter = 0;
53 * Constructs an instance.
56 * ID of transaction chain
58 * Backing {@link DOMStoreTransactionChain}s.
60 * Listener, which listens on transaction chain events.
61 * @throws NullPointerException
62 * If any of arguments is null.
64 DOMBrokerTransactionChain(final long chainId, final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
65 final AbstractDOMBroker broker, final DOMTransactionChainListener listener) {
67 this.chainId = chainId;
68 this.broker = Preconditions.checkNotNull(broker);
69 this.listener = Preconditions.checkNotNull(listener);
72 private void checkNotFailed() {
73 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
77 protected Object newTransactionIdentifier() {
78 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
82 public FluentFuture<? extends CommitInfo> commit(
83 final DOMDataTreeWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
87 final FluentFuture<? extends CommitInfo> ret = broker.commit(transaction, cohorts);
89 COUNTER_UPDATER.incrementAndGet(this);
90 ret.addCallback(new FutureCallback<CommitInfo>() {
92 public void onSuccess(final CommitInfo result) {
93 transactionCompleted();
97 public void onFailure(final Throwable failure) {
98 transactionFailed(transaction, failure);
100 }, MoreExecutors.directExecutor());
106 public void close() {
107 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
109 LOG.debug("Chain {} is no longer running", this);
114 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
123 private void finishClose() {
124 state = State.CLOSED;
125 listener.onTransactionChainSuccessful(this);
128 private void transactionCompleted() {
129 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
134 private void transactionFailed(final DOMDataTreeWriteTransaction tx, final Throwable cause) {
135 state = State.FAILED;
136 LOG.debug("Transaction chain {} failed.", this, cause);
137 listener.onTransactionChainFailed(this, tx, cause);