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.datastore;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.collect.ImmutableMap;
13 import com.google.common.primitives.UnsignedLong;
14 import java.util.HashMap;
16 import java.util.Optional;
17 import java.util.SortedSet;
18 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
19 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
20 import org.opendaylight.controller.cluster.datastore.utils.MutableUnsignedLongSet;
21 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeModification;
24 * Chained transaction specialization of {@link AbstractFrontendHistory}. It prevents concurrent open transactions.
26 * @author Robert Varga
28 final class LocalFrontendHistory extends AbstractFrontendHistory {
29 private final ShardDataTreeTransactionChain chain;
31 private LocalFrontendHistory(final String persistenceId, final ShardDataTree tree,
32 final ShardDataTreeTransactionChain chain, final Map<UnsignedLong, Boolean> closedTransactions,
33 final MutableUnsignedLongSet purgedTransactions) {
34 super(persistenceId, tree, closedTransactions, purgedTransactions);
35 this.chain = requireNonNull(chain);
38 static LocalFrontendHistory create(final String persistenceId, final ShardDataTree tree,
39 final ShardDataTreeTransactionChain chain) {
40 return new LocalFrontendHistory(persistenceId, tree, chain, ImmutableMap.of(), MutableUnsignedLongSet.of());
43 static LocalFrontendHistory recreate(final String persistenceId, final ShardDataTree tree,
44 final ShardDataTreeTransactionChain chain, final Map<UnsignedLong, Boolean> closedTransactions,
45 final MutableUnsignedLongSet purgedTransactions) {
46 return new LocalFrontendHistory(persistenceId, tree, chain, new HashMap<>(closedTransactions),
47 purgedTransactions.mutableCopy());
51 public LocalHistoryIdentifier getIdentifier() {
52 return chain.getIdentifier();
56 FrontendTransaction createOpenSnapshot(final TransactionIdentifier id) {
57 return FrontendReadOnlyTransaction.create(this, chain.newReadOnlyTransaction(id));
61 FrontendTransaction createOpenTransaction(final TransactionIdentifier id) {
62 return FrontendReadWriteTransaction.createOpen(this, chain.newReadWriteTransaction(id));
66 FrontendTransaction createReadyTransaction(final TransactionIdentifier id, final DataTreeModification mod) {
67 return FrontendReadWriteTransaction.createReady(this, id, mod);
71 ShardDataTreeCohort createFailedCohort(final TransactionIdentifier id, final DataTreeModification mod,
72 final Exception failure) {
73 return chain.createFailedCohort(id, mod, failure);
77 ShardDataTreeCohort createReadyCohort(final TransactionIdentifier id, final DataTreeModification mod,
78 final Optional<SortedSet<String>> participatingShardNames) {
79 return chain.createReadyCohort(id, mod, participatingShardNames);