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
9 package org.opendaylight.controller.cluster.sharding;
11 import com.google.common.base.Preconditions;
13 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
14 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
15 import org.opendaylight.mdsal.dom.spi.shard.ForeignShardModificationContext;
16 import org.opendaylight.mdsal.dom.spi.shard.WritableNodeOperation;
17 import org.opendaylight.mdsal.dom.spi.shard.WriteCursorStrategy;
18 import org.opendaylight.mdsal.dom.spi.shard.WriteableModificationNode;
19 import org.opendaylight.mdsal.dom.spi.shard.WriteableNodeWithSubshard;
20 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
24 * Shard modification that consists of the whole shard context, provides cursors which correctly delegate to subshards
27 public class DistributedShardModification extends WriteableNodeWithSubshard {
29 private final DistributedShardModificationContext context;
30 private final Map<DOMDataTreeIdentifier, ForeignShardModificationContext> childShards;
32 public DistributedShardModification(final DistributedShardModificationContext context,
33 final Map<PathArgument, WriteableModificationNode> subshards,
34 final Map<DOMDataTreeIdentifier, ForeignShardModificationContext> childShards) {
36 this.context = Preconditions.checkNotNull(context);
37 this.childShards = Preconditions.checkNotNull(childShards);
41 public PathArgument getIdentifier() {
42 return context.getIdentifier().getRootIdentifier().getLastPathArgument();
46 public WriteCursorStrategy createOperation(final DOMDataTreeWriteCursor parentCursor) {
47 return new WritableNodeOperation(this, context.cursor()) {
50 throw new IllegalStateException("Can not exit data tree root");
56 context.closeCursor();
59 DOMStoreThreePhaseCommitCohort seal() {
60 childShards.values().stream().filter(ForeignShardModificationContext::isModified)
61 .forEach(ForeignShardModificationContext::ready);
63 return context.ready();
66 DOMDataTreeIdentifier getPrefix() {
67 return context.getIdentifier();
70 Map<DOMDataTreeIdentifier, ForeignShardModificationContext> getChildShards() {