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
9 package org.opendaylight.mdsal.dom.broker;
11 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
12 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
14 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
15 import org.opendaylight.mdsal.common.api.TransactionChainListener;
16 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
17 import org.opendaylight.mdsal.dom.api.DOMDataWriteTransaction;
18 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
19 import com.google.common.base.Preconditions;
20 import com.google.common.util.concurrent.CheckedFuture;
21 import com.google.common.util.concurrent.FutureCallback;
22 import com.google.common.util.concurrent.Futures;
23 import java.util.Collection;
25 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
26 import java.util.concurrent.atomic.AtomicLong;
27 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
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 {
39 private static enum State {
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 TransactionChainListener listener;
54 private final long chainId;
56 private volatile State state = State.RUNNING;
57 private volatile int counter = 0;
62 * ID of transaction chain
64 * Backing {@link DOMStoreTransactionChain}s.
66 * Commit Coordinator which should be used to coordinate commits
68 * produced by this chain.
70 * Listener, which listens on transaction chain events.
71 * @throws NullPointerException
72 * If any of arguments is null.
74 public DOMDataBrokerTransactionChainImpl(final long chainId,
75 final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
76 final AbstractDOMDataBroker broker, final TransactionChainListener listener) {
78 this.chainId = chainId;
79 this.broker = Preconditions.checkNotNull(broker);
80 this.listener = Preconditions.checkNotNull(listener);
83 private void checkNotFailed() {
84 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
88 protected Object newTransactionIdentifier() {
89 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
93 public CheckedFuture<Void, TransactionCommitFailedException> submit(
94 final DOMDataWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
98 final CheckedFuture<Void, TransactionCommitFailedException> ret = broker.submit(transaction, cohorts);
100 COUNTER_UPDATER.incrementAndGet(this);
101 Futures.addCallback(ret, new FutureCallback<Void>() {
103 public void onSuccess(final Void result) {
104 transactionCompleted();
108 public void onFailure(final Throwable t) {
109 transactionFailed(transaction, t);
117 public void close() {
118 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
120 LOG.debug("Chain {} is no longer running", this);
125 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
134 private void finishClose() {
135 state = State.CLOSED;
136 listener.onTransactionChainSuccessful(this);
139 private void transactionCompleted() {
140 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
145 private void transactionFailed(final DOMDataWriteTransaction tx, final Throwable cause) {
146 state = State.FAILED;
147 LOG.debug("Transaction chain {} failed.", this, cause);
148 listener.onTransactionChainFailed(this, tx, cause);