2 * Copyright (c) 2014 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.mdsal.binding.dom.adapter;
10 import org.opendaylight.mdsal.common.api.AsyncTransaction;
11 import org.opendaylight.mdsal.common.api.TransactionChain;
12 import org.opendaylight.mdsal.common.api.TransactionChainListener;
13 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
15 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
16 import org.opendaylight.mdsal.dom.api.DOMDataReadOnlyTransaction;
17 import org.opendaylight.mdsal.dom.api.DOMDataReadWriteTransaction;
18 import org.opendaylight.mdsal.dom.api.DOMDataWriteTransaction;
19 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
20 import org.opendaylight.mdsal.binding.api.BindingTransactionChain;
21 import org.opendaylight.mdsal.binding.api.ReadOnlyTransaction;
22 import org.opendaylight.mdsal.binding.api.ReadWriteTransaction;
23 import org.opendaylight.mdsal.binding.api.WriteTransaction;
24 import com.google.common.base.Preconditions;
25 import com.google.common.util.concurrent.CheckedFuture;
26 import com.google.common.util.concurrent.FutureCallback;
27 import com.google.common.util.concurrent.Futures;
28 import org.opendaylight.yangtools.concepts.Delegator;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 final class BindingDOMTransactionChainAdapter implements BindingTransactionChain, Delegator<DOMTransactionChain> {
34 private static final Logger LOG = LoggerFactory.getLogger(BindingDOMTransactionChainAdapter.class);
36 private final DOMTransactionChain delegate;
37 private final BindingToNormalizedNodeCodec codec;
38 private final DelegateChainListener domListener;
39 private final TransactionChainListener bindingListener;
41 public BindingDOMTransactionChainAdapter(final DOMDataBroker chainFactory,
42 final BindingToNormalizedNodeCodec codec, final TransactionChainListener listener) {
43 Preconditions.checkNotNull(chainFactory, "DOM Transaction chain factory must not be null");
44 this.domListener = new DelegateChainListener();
45 this.bindingListener = listener;
46 this.delegate = chainFactory.createTransactionChain(domListener);
51 public DOMTransactionChain getDelegate() {
56 public ReadOnlyTransaction newReadOnlyTransaction() {
57 final DOMDataReadOnlyTransaction delegateTx = delegate.newReadOnlyTransaction();
58 return new BindingDOMReadTransactionAdapter(delegateTx, codec);
62 public ReadWriteTransaction newReadWriteTransaction() {
63 final DOMDataReadWriteTransaction delegateTx = delegate.newReadWriteTransaction();
64 return new BindingDOMReadWriteTransactionAdapter(delegateTx, codec) {
67 public CheckedFuture<Void, TransactionCommitFailedException> submit() {
68 return listenForFailure(this,super.submit());
75 public WriteTransaction newWriteOnlyTransaction() {
76 final DOMDataWriteTransaction delegateTx = delegate.newWriteOnlyTransaction();
77 return new BindingDOMWriteTransactionAdapter<DOMDataWriteTransaction>(delegateTx, codec) {
80 public CheckedFuture<Void,TransactionCommitFailedException> submit() {
81 return listenForFailure(this,super.submit());
87 private CheckedFuture<Void, TransactionCommitFailedException> listenForFailure(
88 final WriteTransaction tx, final CheckedFuture<Void, TransactionCommitFailedException> future) {
89 Futures.addCallback(future, new FutureCallback<Void>() {
91 public void onFailure(final Throwable t) {
92 failTransactionChain(tx,t);
96 public void onSuccess(final Void result) {
104 private void failTransactionChain(final WriteTransaction tx, final Throwable t) {
106 * We asume correct state change for underlaying transaction
108 * chain, so we are not changing any of our internal state
109 * to mark that we failed.
111 this.bindingListener.onTransactionChainFailed(this, tx, t);
115 public void close() {
119 private final class DelegateChainListener implements TransactionChainListener {
122 public void onTransactionChainFailed(final TransactionChain<?, ?> chain,
123 final AsyncTransaction<?, ?> transaction, final Throwable cause) {
124 Preconditions.checkState(delegate.equals(chain),
125 "Illegal state - listener for %s was invoked for incorrect chain %s.", delegate, chain);
127 * Intentionally NOOP, callback for failure, since we
128 * are also listening on each transaction future for failure,
129 * in order to have reference to Binding Transaction (which was seen by client
130 * of this transaction chain), instead of DOM transaction
131 * which is known only to this chain, binding transaction implementation
132 * and underlying transaction chain.
135 LOG.debug("Transaction chain {} failed. Failed DOM Transaction {}",this,transaction,cause);
139 public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
140 Preconditions.checkState(delegate.equals(chain),
141 "Illegal state - listener for %s was invoked for incorrect chain %s.", delegate, chain);
142 bindingListener.onTransactionChainSuccessful(BindingDOMTransactionChainAdapter.this);