+++ /dev/null
-/*
- * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.databroker;
-
-import static com.google.common.base.Preconditions.checkState;
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.util.concurrent.FluentFuture;
-import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.MoreExecutors;
-import java.util.Collection;
-import java.util.Map;
-import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
-import java.util.concurrent.atomic.AtomicLong;
-import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
-import org.opendaylight.mdsal.common.api.CommitInfo;
-import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
-import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
-import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
-import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-final class DOMBrokerTransactionChain extends AbstractDOMTransactionFactory<DOMStoreTransactionChain>
- implements DOMTransactionChain {
- private enum State {
- RUNNING,
- CLOSING,
- CLOSED,
- FAILED,
- }
-
- private static final AtomicIntegerFieldUpdater<DOMBrokerTransactionChain> COUNTER_UPDATER =
- AtomicIntegerFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, "counter");
- private static final AtomicReferenceFieldUpdater<DOMBrokerTransactionChain, State> STATE_UPDATER =
- AtomicReferenceFieldUpdater.newUpdater(DOMBrokerTransactionChain.class, State.class, "state");
- private static final Logger LOG = LoggerFactory.getLogger(DOMBrokerTransactionChain.class);
- private final AtomicLong txNum = new AtomicLong();
- private final AbstractDOMBroker broker;
- private final DOMTransactionChainListener listener;
- private final long chainId;
-
- private volatile State state = State.RUNNING;
- private volatile int counter = 0;
-
- /**
- * Constructs an instance.
- *
- * @param chainId
- * ID of transaction chain
- * @param chains
- * Backing {@link DOMStoreTransactionChain}s.
- * @param listener
- * Listener, which listens on transaction chain events.
- * @throws NullPointerException
- * If any of arguments is null.
- */
- DOMBrokerTransactionChain(final long chainId, final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
- final AbstractDOMBroker broker, final DOMTransactionChainListener listener) {
- super(chains);
- this.chainId = chainId;
- this.broker = requireNonNull(broker);
- this.listener = requireNonNull(listener);
- }
-
- private void checkNotFailed() {
- checkState(state != State.FAILED, "Transaction chain has failed");
- }
-
- @Override
- protected Object newTransactionIdentifier() {
- return "DOM-CHAIN-" + chainId + "-" + txNum.getAndIncrement();
- }
-
- @Override
- public FluentFuture<? extends CommitInfo> commit(
- final DOMDataTreeWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
- checkNotFailed();
- checkNotClosed();
-
- final FluentFuture<? extends CommitInfo> ret = broker.commit(transaction, cohorts);
-
- COUNTER_UPDATER.incrementAndGet(this);
- ret.addCallback(new FutureCallback<CommitInfo>() {
- @Override
- public void onSuccess(final CommitInfo result) {
- transactionCompleted();
- }
-
- @Override
- public void onFailure(final Throwable failure) {
- transactionFailed(transaction, failure);
- }
- }, MoreExecutors.directExecutor());
-
- return ret;
- }
-
- @Override
- public void close() {
- final boolean success = STATE_UPDATER.compareAndSet(this, State.RUNNING, State.CLOSING);
- if (!success) {
- LOG.debug("Chain {} is no longer running", this);
- return;
- }
-
- super.close();
- for (DOMStoreTransactionChain subChain : getTxFactories().values()) {
- subChain.close();
- }
-
- if (counter == 0) {
- finishClose();
- }
- }
-
- private void finishClose() {
- state = State.CLOSED;
- listener.onTransactionChainSuccessful(this);
- }
-
- private void transactionCompleted() {
- if (COUNTER_UPDATER.decrementAndGet(this) == 0 && state == State.CLOSING) {
- finishClose();
- }
- }
-
- private void transactionFailed(final DOMDataTreeWriteTransaction tx, final Throwable cause) {
- state = State.FAILED;
- LOG.debug("Transaction chain {} failed.", this, cause);
- listener.onTransactionChainFailed(this, tx, cause);
- }
-}