2 * Copyright (c) 2015 Brocade Communications 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.datastore;
10 import akka.actor.ActorSelection;
11 import com.google.common.base.Optional;
12 import com.google.common.base.Preconditions;
13 import com.google.common.util.concurrent.FutureCallback;
14 import com.google.common.util.concurrent.Futures;
15 import com.google.common.util.concurrent.SettableFuture;
16 import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
17 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
18 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
19 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
22 import scala.concurrent.Future;
25 * Processes front-end transaction operations locally before being committed to the destination shard.
26 * Instances of this class are used when the destination shard is local to the caller.
28 * @author Thomas Pantelis
30 abstract class LocalTransactionContext extends AbstractTransactionContext {
31 private final DOMStoreTransaction txDelegate;
33 LocalTransactionContext(DOMStoreTransaction txDelegate, TransactionIdentifier identifier) {
35 this.txDelegate = Preconditions.checkNotNull(txDelegate);
38 protected abstract DOMStoreWriteTransaction getWriteDelegate();
40 protected abstract DOMStoreReadTransaction getReadDelegate();
43 public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
44 incrementModificationCount();
45 getWriteDelegate().write(path, data);
49 public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
50 incrementModificationCount();
51 getWriteDelegate().merge(path, data);
55 public void deleteData(YangInstanceIdentifier path) {
56 incrementModificationCount();
57 getWriteDelegate().delete(path);
61 public void readData(YangInstanceIdentifier path, final SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture) {
62 Futures.addCallback(getReadDelegate().read(path), new FutureCallback<Optional<NormalizedNode<?, ?>>>() {
64 public void onSuccess(final Optional<NormalizedNode<?, ?>> result) {
65 proxyFuture.set(result);
69 public void onFailure(final Throwable t) {
70 proxyFuture.setException(t);
76 public void dataExists(YangInstanceIdentifier path, final SettableFuture<Boolean> proxyFuture) {
77 Futures.addCallback(getReadDelegate().exists(path), new FutureCallback<Boolean>() {
79 public void onSuccess(final Boolean result) {
80 proxyFuture.set(result);
84 public void onFailure(final Throwable t) {
85 proxyFuture.setException(t);
90 private LocalThreePhaseCommitCohort ready() {
91 logModificationCount();
92 return (LocalThreePhaseCommitCohort) getWriteDelegate().ready();
96 public Future<ActorSelection> readyTransaction() {
97 final LocalThreePhaseCommitCohort cohort = ready();
98 return cohort.initiateCoordinatedCommit();
102 public Future<Object> directCommit() {
103 final LocalThreePhaseCommitCohort cohort = ready();
104 return cohort.initiateDirectCommit();
108 public boolean supportsDirectCommit() {
113 public void closeTransaction() {