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 static com.google.common.base.Preconditions.checkState;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.util.concurrent.FluentFuture;
15 import com.google.common.util.concurrent.FutureCallback;
16 import com.google.common.util.concurrent.MoreExecutors;
17 import java.util.Collection;
19 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
20 import java.util.concurrent.atomic.AtomicLong;
21 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
22 import org.opendaylight.mdsal.common.api.CommitInfo;
23 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
24 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
25 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
26 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
27 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
28 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 final class DOMBrokerTransactionChain extends AbstractDOMTransactionFactory<DOMStoreTransactionChain>
33 implements DOMTransactionChain {
41 private static final AtomicIntegerFieldUpdater<DOMBrokerTransactionChain> COUNTER_UPDATER =
42 AtomicIntegerFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, "counter");
43 private static final AtomicReferenceFieldUpdater<DOMBrokerTransactionChain, State> STATE_UPDATER =
44 AtomicReferenceFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, State.class, "state");
45 private static final Logger LOG = LoggerFactory.getLogger(DOMBrokerTransactionChain.class);
46 private final AtomicLong txNum = new AtomicLong();
47 private final AbstractDOMBroker broker;
48 private final DOMTransactionChainListener listener;
49 private final long chainId;
51 private volatile State state = State.RUNNING;
52 private volatile int counter = 0;
55 * Constructs an instance.
58 * ID of transaction chain
60 * Backing {@link DOMStoreTransactionChain}s.
62 * Listener, which listens on transaction chain events.
63 * @throws NullPointerException
64 * If any of arguments is null.
66 DOMBrokerTransactionChain(final long chainId, final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
67 final AbstractDOMBroker broker, final DOMTransactionChainListener listener) {
69 this.chainId = chainId;
70 this.broker = requireNonNull(broker);
71 this.listener = requireNonNull(listener);
74 private void checkNotFailed() {
75 checkState(state != State.FAILED, "Transaction chain has failed");
79 protected Object newTransactionIdentifier() {
80 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
84 public FluentFuture<? extends CommitInfo> commit(
85 final DOMDataTreeWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
89 final FluentFuture<? extends CommitInfo> ret = broker.commit(transaction, cohorts);
91 COUNTER_UPDATER.incrementAndGet(this);
92 ret.addCallback(new FutureCallback<CommitInfo>() {
94 public void onSuccess(final CommitInfo result) {
95 transactionCompleted();
99 public void onFailure(final Throwable failure) {
100 transactionFailed(transaction, failure);
102 }, MoreExecutors.directExecutor());
108 public void close() {
109 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
111 LOG.debug("Chain {} is no longer running", this);
116 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
125 private void finishClose() {
126 state = State.CLOSED;
127 listener.onTransactionChainSuccessful(this);
130 private void transactionCompleted() {
131 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
136 private void transactionFailed(final DOMDataTreeWriteTransaction tx, final Throwable cause) {
137 state = State.FAILED;
138 LOG.debug("Transaction chain {} failed.", this, cause);
139 listener.onTransactionChainFailed(this, tx, cause);