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;
13 import java.util.Collection;
15 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
16 import java.util.concurrent.atomic.AtomicLong;
17 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
19 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
20 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
21 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
22 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
23 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
24 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
29 * NormalizedNode implementation of {@link org.opendaylight.controller.md.sal.common.api.data.TransactionChain} which is backed
30 * by several {@link DOMStoreTransactionChain} differentiated by provided
31 * {@link org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType} type.
34 final class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTransactionFactory<DOMStoreTransactionChain>
35 implements DOMTransactionChain {
36 private static enum State {
43 private static final AtomicIntegerFieldUpdater<DOMDataBrokerTransactionChainImpl> COUNTER_UPDATER =
44 AtomicIntegerFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, "counter");
45 private static final AtomicReferenceFieldUpdater<DOMDataBrokerTransactionChainImpl, State> STATE_UPDATER =
46 AtomicReferenceFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, State.class, "state");
47 private static final Logger LOG = LoggerFactory.getLogger(DOMDataBrokerTransactionChainImpl.class);
48 private final AtomicLong txNum = new AtomicLong();
49 private final AbstractDOMDataBroker broker;
50 private final TransactionChainListener listener;
51 private final long chainId;
53 private volatile State state = State.RUNNING;
54 private volatile int counter = 0;
59 * ID of transaction chain
61 * Backing {@link DOMStoreTransactionChain}s.
63 * Commit Coordinator which should be used to coordinate commits
65 * produced by this chain.
67 * Listener, which listens on transaction chain events.
68 * @throws NullPointerException
69 * If any of arguments is null.
71 public DOMDataBrokerTransactionChainImpl(final long chainId,
72 final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
73 final AbstractDOMDataBroker broker, final TransactionChainListener listener) {
75 this.chainId = chainId;
76 this.broker = Preconditions.checkNotNull(broker);
77 this.listener = Preconditions.checkNotNull(listener);
80 private void checkNotFailed() {
81 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
85 protected Object newTransactionIdentifier() {
86 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
90 public CheckedFuture<Void, TransactionCommitFailedException> submit(
91 final DOMDataWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
95 final CheckedFuture<Void, TransactionCommitFailedException> ret = broker.submit(transaction, cohorts);
97 COUNTER_UPDATER.incrementAndGet(this);
98 Futures.addCallback(ret, new FutureCallback<Void>() {
100 public void onSuccess(final Void result) {
101 transactionCompleted();
105 public void onFailure(final Throwable t) {
106 transactionFailed(transaction, t);
114 public void close() {
115 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
117 LOG.debug("Chain {} is no longer running", this);
122 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
131 private void finishClose() {
132 state = State.CLOSED;
133 listener.onTransactionChainSuccessful(this);
136 private void transactionCompleted() {
137 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
142 private void transactionFailed(final DOMDataWriteTransaction tx, final Throwable cause) {
143 state = State.FAILED;
144 LOG.debug("Transaction chain {} failed.", this, cause);
145 listener.onTransactionChainFailed(this, tx, cause);