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.access.commands;
10 import akka.actor.ActorRef;
11 import com.google.common.annotations.Beta;
12 import com.google.common.base.Preconditions;
13 import java.util.ArrayList;
14 import java.util.List;
15 import javax.annotation.concurrent.NotThreadSafe;
16 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
17 import org.opendaylight.yangtools.concepts.Builder;
18 import org.opendaylight.yangtools.concepts.Identifiable;
21 * A reusable {@link Builder} for creating {@link ModifyTransactionRequest} message instances. Its internal state is
22 * reset when {@link #build()} is invoked, hence it can be used to create a sequence of messages.
24 * @author Robert Varga
28 public final class ModifyTransactionRequestBuilder implements Builder<ModifyTransactionRequest>,
29 Identifiable<TransactionIdentifier> {
30 private final List<TransactionModification> modifications = new ArrayList<>(1);
31 private final TransactionIdentifier identifier;
32 private final ActorRef replyTo;
33 private PersistenceProtocol protocol = null;
34 private long sequence;
36 public ModifyTransactionRequestBuilder(final TransactionIdentifier identifier, final ActorRef replyTo) {
37 this.identifier = Preconditions.checkNotNull(identifier);
38 this.replyTo = Preconditions.checkNotNull(replyTo);
42 public TransactionIdentifier getIdentifier() {
46 private void checkFinished() {
47 Preconditions.checkState(protocol != null, "Batch has already been finished");
50 public void setSequence(final long sequence) {
52 Preconditions.checkState(modifications.isEmpty(), "Sequence must be set first");
53 this.sequence = sequence;
56 public void addModification(final TransactionModification modification) {
58 modifications.add(Preconditions.checkNotNull(modification));
61 public void setAbort() {
63 // Transaction is being aborted, no need to transmit operations
64 modifications.clear();
65 protocol = PersistenceProtocol.ABORT;
68 public void setCommit(final boolean coordinated) {
70 protocol = coordinated ? PersistenceProtocol.THREE_PHASE : PersistenceProtocol.SIMPLE;
74 return modifications.size();
78 public ModifyTransactionRequest build() {
79 final ModifyTransactionRequest ret = new ModifyTransactionRequest(identifier, sequence, 0, replyTo,
80 modifications, protocol);
81 modifications.clear();