2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
3 * This program and the accompanying materials are made available under the
4 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
5 * and is available at http://www.eclipse.org/legal/epl-v10.html
7 package org.opendaylight.controller.md.sal.dom.broker.impl;
9 import com.google.common.base.Preconditions;
10 import com.google.common.util.concurrent.CheckedFuture;
11 import com.google.common.util.concurrent.FutureCallback;
12 import com.google.common.util.concurrent.Futures;
14 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
15 import java.util.concurrent.atomic.AtomicLong;
16 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
18 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
19 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
20 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
21 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
22 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
23 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
28 * NormalizedNode implementation of {@link org.opendaylight.controller.md.sal.common.api.data.TransactionChain} which is backed
29 * by several {@link DOMStoreTransactionChain} differentiated by provided
30 * {@link org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType} type.
33 final class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTransactionFactory<DOMStoreTransactionChain>
34 implements DOMTransactionChain {
35 private static enum State {
42 private static final AtomicIntegerFieldUpdater<DOMDataBrokerTransactionChainImpl> COUNTER_UPDATER =
43 AtomicIntegerFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, "counter");
44 private static final AtomicReferenceFieldUpdater<DOMDataBrokerTransactionChainImpl, State> STATE_UPDATER =
45 AtomicReferenceFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, State.class, "state");
46 private static final Logger LOG = LoggerFactory.getLogger(DOMDataBrokerTransactionChainImpl.class);
47 private final AtomicLong txNum = new AtomicLong();
48 private final DOMDataCommitExecutor coordinator;
49 private final TransactionChainListener listener;
50 private final long chainId;
52 private volatile State state = State.RUNNING;
53 private volatile int counter = 0;
58 * ID of transaction chain
60 * Backing {@link DOMStoreTransactionChain}s.
62 * Commit Coordinator which should be used to coordinate commits
64 * produced by this chain.
66 * Listener, which listens on transaction chain events.
67 * @throws NullPointerException
68 * If any of arguments is null.
70 public DOMDataBrokerTransactionChainImpl(final long chainId,
71 final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
72 final DOMDataCommitExecutor coordinator, final TransactionChainListener listener) {
74 this.chainId = chainId;
75 this.coordinator = Preconditions.checkNotNull(coordinator);
76 this.listener = Preconditions.checkNotNull(listener);
79 private void checkNotFailed() {
80 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
84 protected Object newTransactionIdentifier() {
85 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
89 public CheckedFuture<Void, TransactionCommitFailedException> submit(
90 final DOMDataWriteTransaction transaction, final Iterable<DOMStoreThreePhaseCommitCohort> cohorts) {
94 final CheckedFuture<Void, TransactionCommitFailedException> ret = coordinator.submit(transaction, cohorts);
96 COUNTER_UPDATER.incrementAndGet(this);
97 Futures.addCallback(ret, new FutureCallback<Void>() {
99 public void onSuccess(final Void result) {
100 transactionCompleted();
104 public void onFailure(final Throwable t) {
105 transactionFailed(transaction, t);
113 public void close() {
114 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
116 LOG.debug("Chain {} is no longer running", this);
121 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
130 private void finishClose() {
131 state = State.CLOSED;
132 listener.onTransactionChainSuccessful(this);
135 private void transactionCompleted() {
136 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
141 private void transactionFailed(final DOMDataWriteTransaction tx, final Throwable cause) {
142 state = State.FAILED;
143 LOG.debug("Transaction chain {} failed.", this, cause);
144 listener.onTransactionChainFailed(this, tx, cause);