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.controller.md.sal.common.api.data.TransactionChainClosedException;
19 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
20 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
21 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
22 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
27 * An implementation of {@link DOMStoreTransactionChain} backed by a {@link ClientLocalHistory}.
29 * @author Robert Varga
31 final class ClientBackedTransactionChain implements DOMStoreTransactionChain {
32 private static final Logger LOG = LoggerFactory.getLogger(ClientBackedTransactionChain.class);
35 private final Map<AbstractClientHandle<?>, Boolean> openSnapshots = new WeakHashMap<>();
37 private final ClientLocalHistory history;
39 ClientBackedTransactionChain(final ClientLocalHistory history) {
40 this.history = Preconditions.checkNotNull(history);
44 public DOMStoreReadTransaction newReadOnlyTransaction() {
45 return new ClientBackedReadTransaction(createSnapshot(), this);
49 public DOMStoreReadWriteTransaction newReadWriteTransaction() {
50 return new ClientBackedReadWriteTransaction(createTransaction());
54 public DOMStoreWriteTransaction newWriteOnlyTransaction() {
55 return new ClientBackedWriteTransaction(createTransaction());
59 public synchronized void close() {
60 for (AbstractClientHandle<?> snap : openSnapshots.keySet()) {
61 LOG.warn("Aborting unclosed transaction {}", snap.getIdentifier());
64 openSnapshots.clear();
69 synchronized void snapshotClosed(final ClientSnapshot clientTransaction) {
70 openSnapshots.remove(clientTransaction);
73 private ClientSnapshot createSnapshot() {
75 return recordSnapshot(history.takeSnapshot());
76 } catch (org.opendaylight.mdsal.common.api.TransactionChainClosedException e) {
77 throw new TransactionChainClosedException("Transaction chain has been closed", e);
81 private ClientTransaction createTransaction() {
83 return recordSnapshot(history.createTransaction());
84 } catch (org.opendaylight.mdsal.common.api.TransactionChainClosedException e) {
85 throw new TransactionChainClosedException("Transaction chain has been closed", e);
89 private synchronized <T extends AbstractClientHandle<?>> T recordSnapshot(final T snapshot) {
90 openSnapshots.put(snapshot, Boolean.TRUE);