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 com.google.common.base.Preconditions;
12 import com.google.common.util.concurrent.CheckedFuture;
13 import com.google.common.util.concurrent.FutureCallback;
14 import com.google.common.util.concurrent.Futures;
15 import com.google.common.util.concurrent.MoreExecutors;
16 import java.util.Collection;
18 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
19 import java.util.concurrent.atomic.AtomicLong;
20 import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
21 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
22 import org.opendaylight.mdsal.common.api.TransactionChainListener;
23 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
24 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
25 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
26 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
27 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
31 final class DOMBrokerTransactionChain extends AbstractDOMTransactionFactory<DOMStoreTransactionChain>
32 implements DOMTransactionChain {
40 private static final AtomicIntegerFieldUpdater<DOMBrokerTransactionChain> COUNTER_UPDATER =
41 AtomicIntegerFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, "counter");
42 private static final AtomicReferenceFieldUpdater<DOMBrokerTransactionChain, State> STATE_UPDATER =
43 AtomicReferenceFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, State.class, "state");
44 private static final Logger LOG = LoggerFactory.getLogger(DOMBrokerTransactionChain.class);
45 private final AtomicLong txNum = new AtomicLong();
46 private final AbstractDOMBroker broker;
47 private final TransactionChainListener listener;
48 private final long chainId;
50 private volatile State state = State.RUNNING;
51 private volatile int counter = 0;
54 * Constructs an instance.
57 * ID of transaction chain
59 * Backing {@link DOMStoreTransactionChain}s.
61 * Listener, which listens on transaction chain events.
62 * @throws NullPointerException
63 * If any of arguments is null.
65 DOMBrokerTransactionChain(final long chainId, final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
66 final AbstractDOMBroker broker, final TransactionChainListener listener) {
68 this.chainId = chainId;
69 this.broker = Preconditions.checkNotNull(broker);
70 this.listener = Preconditions.checkNotNull(listener);
73 private void checkNotFailed() {
74 Preconditions.checkState(state != State.FAILED, "Transaction chain has failed");
78 protected Object newTransactionIdentifier() {
79 return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
83 public CheckedFuture<Void, TransactionCommitFailedException> submit(
84 final DOMDataTreeWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
88 final CheckedFuture<Void, TransactionCommitFailedException> ret = broker.submit(transaction, cohorts);
90 COUNTER_UPDATER.incrementAndGet(this);
91 Futures.addCallback(ret, new FutureCallback<Void>() {
93 public void onSuccess(final Void result) {
94 transactionCompleted();
98 public void onFailure(final Throwable failure) {
99 transactionFailed(transaction, failure);
101 }, MoreExecutors.directExecutor());
107 public void close() {
108 final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
110 LOG.debug("Chain {} is no longer running", this);
115 for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
124 private void finishClose() {
125 state = State.CLOSED;
126 listener.onTransactionChainSuccessful(this);
129 private void transactionCompleted() {
130 if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
135 private void transactionFailed(final DOMDataTreeWriteTransaction tx, final Throwable cause) {
136 state = State.FAILED;
137 LOG.debug("Transaction chain {} failed.", this, cause);
138 listener.onTransactionChainFailed(this, tx, cause);