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.restconf.nb.rfc8040.handlers;
10 import java.util.Objects;
11 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
12 import org.opendaylight.mdsal.dom.api.DOMDataTreeTransaction;
13 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
14 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
15 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
16 import org.slf4j.Logger;
17 import org.slf4j.LoggerFactory;
20 * Implementation of {@link TransactionChainHandler}.
23 public class TransactionChainHandler implements Handler<DOMTransactionChain>, AutoCloseable {
24 private static final Logger LOG = LoggerFactory.getLogger(TransactionChainHandler.class);
26 private final DOMTransactionChainListener transactionChainListener = new DOMTransactionChainListener() {
28 public void onTransactionChainFailed(final DOMTransactionChain chain, final DOMDataTreeTransaction transaction,
29 final Throwable cause) {
30 LOG.warn("TransactionChain({}) {} FAILED!", chain, transaction.getIdentifier(), cause);
32 throw new RestconfDocumentedException("TransactionChain(" + chain + ") not committed correctly", cause);
36 public void onTransactionChainSuccessful(final DOMTransactionChain chain) {
37 LOG.trace("TransactionChain({}) SUCCESSFUL", chain);
41 private final DOMDataBroker dataBroker;
43 private volatile DOMTransactionChain transactionChain;
46 * Prepare transaction chain service for Restconf services.
48 public TransactionChainHandler(final DOMDataBroker dataBroker) {
49 this.dataBroker = Objects.requireNonNull(dataBroker);
50 transactionChain = Objects.requireNonNull(dataBroker.createTransactionChain(transactionChainListener));
54 public DOMTransactionChain get() {
55 return this.transactionChain;
58 public synchronized void reset() {
59 LOG.trace("Resetting TransactionChain({})", transactionChain);
60 transactionChain.close();
61 transactionChain = dataBroker.createTransactionChain(transactionChainListener);
65 public synchronized void close() {
66 transactionChain.close();