2 * Copyright (c) 2016 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
8 package org.opendaylight.controller.cluster.databroker;
10 import com.google.common.base.Preconditions;
12 import java.util.WeakHashMap;
13 import javax.annotation.concurrent.GuardedBy;
14 import org.opendaylight.controller.cluster.databroker.actors.dds.AbstractClientHandle;
15 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientLocalHistory;
16 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientSnapshot;
17 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientTransaction;
18 import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction;
19 import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadWriteTransaction;
20 import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
21 import org.opendaylight.mdsal.dom.spi.store.DOMStoreWriteTransaction;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * An implementation of {@link DOMStoreTransactionChain} backed by a {@link ClientLocalHistory}.
28 * @author Robert Varga
30 final class ClientBackedTransactionChain implements DOMStoreTransactionChain {
31 private static final Logger LOG = LoggerFactory.getLogger(ClientBackedTransactionChain.class);
34 private final Map<AbstractClientHandle<?>, Boolean> openSnapshots = new WeakHashMap<>();
36 private final ClientLocalHistory history;
37 private final boolean debugAllocation;
39 ClientBackedTransactionChain(final ClientLocalHistory history, final boolean debugAllocation) {
40 this.history = Preconditions.checkNotNull(history);
41 this.debugAllocation = debugAllocation;
45 public DOMStoreReadTransaction newReadOnlyTransaction() {
46 return new ClientBackedReadTransaction(createSnapshot(), this, allocationContext());
50 public DOMStoreReadWriteTransaction newReadWriteTransaction() {
51 return new ClientBackedReadWriteTransaction(createTransaction(), allocationContext());
55 public DOMStoreWriteTransaction newWriteOnlyTransaction() {
56 return new ClientBackedWriteTransaction(createTransaction(), allocationContext());
60 public synchronized void close() {
61 for (AbstractClientHandle<?> snap : openSnapshots.keySet()) {
62 LOG.warn("Aborting unclosed transaction {}", snap.getIdentifier());
65 openSnapshots.clear();
70 synchronized void snapshotClosed(final ClientSnapshot clientTransaction) {
71 openSnapshots.remove(clientTransaction);
74 private ClientSnapshot createSnapshot() {
75 return recordSnapshot(history.takeSnapshot());
78 private ClientTransaction createTransaction() {
79 return recordSnapshot(history.createTransaction());
82 private Throwable allocationContext() {
83 return debugAllocation ? new Throwable("allocated at") : null;
86 private synchronized <T extends AbstractClientHandle<?>> T recordSnapshot(final T snapshot) {
87 openSnapshots.put(snapshot, Boolean.TRUE);