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 com.google.common.base.Preconditions.checkState;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.primitives.UnsignedLong;
14 import java.util.HashMap;
16 import org.eclipse.jdt.annotation.NonNull;
17 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
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.persisted.FrontendHistoryMetadata;
21 import org.opendaylight.controller.cluster.datastore.utils.MutableUnsignedLongSet;
22 import org.opendaylight.controller.cluster.datastore.utils.UnsignedLongBitmap;
23 import org.opendaylight.yangtools.concepts.Builder;
24 import org.opendaylight.yangtools.concepts.Identifiable;
26 final class FrontendHistoryMetadataBuilder implements Builder<FrontendHistoryMetadata>,
27 Identifiable<LocalHistoryIdentifier> {
29 private final @NonNull Map<UnsignedLong, Boolean> closedTransactions;
30 private final @NonNull MutableUnsignedLongSet purgedTransactions;
31 private final @NonNull LocalHistoryIdentifier identifier;
33 private boolean closed;
35 FrontendHistoryMetadataBuilder(final LocalHistoryIdentifier identifier) {
36 this.identifier = requireNonNull(identifier);
37 purgedTransactions = MutableUnsignedLongSet.of();
38 closedTransactions = new HashMap<>(2);
41 FrontendHistoryMetadataBuilder(final ClientIdentifier clientId, final FrontendHistoryMetadata meta) {
42 identifier = new LocalHistoryIdentifier(clientId, meta.getHistoryId(), meta.getCookie());
43 closedTransactions = meta.getClosedTransactions().mutableCopy();
44 purgedTransactions = meta.getPurgedTransactions().mutableCopy();
45 closed = meta.isClosed();
49 public LocalHistoryIdentifier getIdentifier() {
54 public FrontendHistoryMetadata build() {
55 return new FrontendHistoryMetadata(identifier.getHistoryId(), identifier.getCookie(), closed,
56 UnsignedLongBitmap.copyOf(closedTransactions), purgedTransactions.immutableCopy());
59 void onHistoryClosed() {
60 checkState(identifier.getHistoryId() != 0);
64 void onTransactionAborted(final TransactionIdentifier txId) {
65 closedTransactions.put(UnsignedLong.fromLongBits(txId.getTransactionId()), Boolean.FALSE);
68 void onTransactionCommitted(final TransactionIdentifier txId) {
69 closedTransactions.put(UnsignedLong.fromLongBits(txId.getTransactionId()), Boolean.TRUE);
72 void onTransactionPurged(final TransactionIdentifier txId) {
73 final long txidBits = txId.getTransactionId();
74 closedTransactions.remove(UnsignedLong.fromLongBits(txidBits));
75 purgedTransactions.add(txidBits);
79 * Transform frontend metadata for a particular client history into its {@link LocalFrontendHistory} counterpart.
81 * @param shard parent shard
82 * @return Leader history state
84 @NonNull AbstractFrontendHistory toLeaderState(final @NonNull Shard shard) {
85 if (identifier.getHistoryId() == 0) {
86 return StandaloneFrontendHistory.recreate(shard.persistenceId(), identifier.getClientId(),
87 shard.getDataStore(), closedTransactions, purgedTransactions);
90 return LocalFrontendHistory.recreate(shard.persistenceId(), shard.getDataStore(),
91 shard.getDataStore().recreateTransactionChain(identifier, closed), closedTransactions, purgedTransactions);