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.raft;
10 import akka.japi.Procedure;
11 import com.google.common.base.Preconditions;
12 import org.opendaylight.controller.cluster.DataPersistenceProvider;
13 import org.opendaylight.controller.cluster.DelegatingPersistentDataProvider;
14 import org.opendaylight.controller.cluster.PersistentDataProvider;
15 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
16 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.PersistentPayload;
19 * The DelegatingPersistentDataProvider used by RaftActor to override the configured persistent provider to
20 * persist ReplicatedLogEntry's based on whether or not the payload is a PersistentPayload instance.
22 * @author Thomas Pantelis
24 class RaftActorDelegatingPersistentDataProvider extends DelegatingPersistentDataProvider {
25 private final PersistentDataProvider persistentProvider;
27 RaftActorDelegatingPersistentDataProvider(DataPersistenceProvider delegate,
28 PersistentDataProvider persistentProvider) {
30 this.persistentProvider = Preconditions.checkNotNull(persistentProvider);
34 public <T> void persist(final T o, final Procedure<T> procedure) {
35 if(getDelegate().isRecoveryApplicable()) {
36 super.persist(o, procedure);
38 if(o instanceof ReplicatedLogEntry) {
39 Payload payload = ((ReplicatedLogEntry)o).getData();
40 if(payload instanceof PersistentPayload) {
41 // We persist the Payload but not the ReplicatedLogEntry to avoid gaps in the journal indexes
42 // on recovery if data persistence is later enabled.
43 persistentProvider.persist(payload, p -> procedure.apply(o));
45 super.persist(o, procedure);
48 super.persist(o, procedure);