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.controller.md.sal.dom.broker.impl;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Supplier;
13 import com.google.common.util.concurrent.FutureCallback;
14 import com.google.common.util.concurrent.Futures;
15 import com.google.common.util.concurrent.ListenableFuture;
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.controller.md.sal.common.api.data.LogicalDatastoreType;
23 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
24 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
25 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
26 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
27 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
32 * NormalizedNode implementation of {@link org.opendaylight.controller.md.sal.common.api.data.TransactionChain} which
34 * by several {@link DOMStoreTransactionChain} differentiated by provided
35 * {@link org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType} type.
38 final class DOMDataBrokerTransactionChainImpl extends
39 AbstractDOMForwardedTransactionFactory<DOMStoreTransactionChain> implements DOMTransactionChain {
41 RUNNING, CLOSING, CLOSED, FAILED,
44 private static final AtomicIntegerFieldUpdater<DOMDataBrokerTransactionChainImpl> COUNTER_UPDATER
45 = AtomicIntegerFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, "counter");
46 private static final AtomicReferenceFieldUpdater<DOMDataBrokerTransactionChainImpl, State> STATE_UPDATER
47 = AtomicReferenceFieldUpdater.newUpdater(DOMDataBrokerTransactionChainImpl.class, State.class, "state");
48 private static final Logger LOG = LoggerFactory.getLogger(DOMDataBrokerTransactionChainImpl.class);
49 private final AtomicLong txNum = new AtomicLong();
50 private final AbstractDOMDataBroker broker;
51 private final TransactionChainListener listener;
52 private final long chainId;
54 private volatile State state = State.RUNNING;
55 private volatile int counter = 0;
58 * DOMDataBrokerTransactionChainImpl constructor.
60 * @param chainId ID of transaction chain
61 * @param chains Backing {@link DOMStoreTransactionChain}s.
62 * @param broker Commit Coordinator which should be used to coordinate commits
64 * produced by this chain.
65 * @param listener Listener, which listens on transaction chain events.
66 * @throws NullPointerException If any of arguments is null.
68 DOMDataBrokerTransactionChainImpl(final long chainId,
69 final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
70 final AbstractDOMDataBroker broker,
71 final TransactionChainListener listener) {
73 this.chainId = chainId;
74 this.broker = Preconditions.checkNotNull(broker);
75 this.listener = Preconditions.checkNotNull(listener);
78 private void checkNotFailed() {
79 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
83 protected Object newTransactionIdentifier() {
84 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
88 public <T> ListenableFuture<T> commit(final DOMDataWriteTransaction transaction,
89 final Collection<DOMStoreThreePhaseCommitCohort> cohorts, final Supplier<T> futureValueSupplier) {
93 final ListenableFuture<T> ret = broker.commit(transaction, cohorts, futureValueSupplier);
95 COUNTER_UPDATER.incrementAndGet(this);
96 Futures.addCallback(ret, new FutureCallback<T>() {
98 public void onSuccess(final T result) {
99 transactionCompleted();
103 public void onFailure(final Throwable throwable) {
104 transactionFailed(transaction, throwable);
106 }, MoreExecutors.directExecutor());
112 public void close() {
113 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
115 LOG.debug("Chain {} is no longer running", this);
120 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
129 private void finishClose() {
130 state = State.CLOSED;
131 listener.onTransactionChainSuccessful(this);
134 private void transactionCompleted() {
135 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
140 private void transactionFailed(final DOMDataWriteTransaction tx, final Throwable cause) {
141 state = State.FAILED;
142 LOG.debug("Transaction chain {} failed.", this, cause);
143 listener.onTransactionChainFailed(this, tx, cause);