2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
3 * This program and the accompanying materials are made available under the
4 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
5 * and is available at http://www.eclipse.org/legal/epl-v10.html
7 package org.opendaylight.controller.md.sal.dom.broker.impl;
9 import com.google.common.base.Preconditions;
10 import com.google.common.collect.ImmutableMap;
12 import java.util.Collection;
14 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
15 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
20 * Composite DOM Transaction backed by {@link DOMStoreTransaction}.
22 * Abstract base for composite transaction, which provides access only to common
23 * functionality as retrieval of subtransaction, close method and retrieval of
27 * Subtransaction distinguisher
31 abstract class AbstractDOMForwardedCompositeTransaction<K, T extends DOMStoreTransaction> implements
32 AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>> {
34 private final ImmutableMap<K, T> backingTxs;
35 private final Object identifier;
39 * Creates new composite Transactions.
42 * Identifier of transaction.
44 * Key,value map of backing transactions.
46 protected AbstractDOMForwardedCompositeTransaction(final Object identifier, final ImmutableMap<K, T> backingTxs) {
47 this.identifier = Preconditions.checkNotNull(identifier, "Identifier should not be null");
48 this.backingTxs = Preconditions.checkNotNull(backingTxs, "Backing transactions should not be null");
52 * Returns subtransaction associated with supplied key.
56 * @throws NullPointerException
58 * @throws IllegalArgumentException
59 * if no subtransaction is associated with key.
61 protected final T getSubtransaction(final K key) {
62 Preconditions.checkNotNull(key, "key must not be null.");
63 Preconditions.checkArgument(backingTxs.containsKey(key), "No subtransaction associated with %s", key);
64 return backingTxs.get(key);
68 * Returns immutable Iterable of all subtransactions.
71 protected Collection<T> getSubtransactions() {
72 return backingTxs.values();
76 public Object getIdentifier() {
80 protected void closeSubtransactions() {
82 * We share one exception for all failures, which are added
83 * as supressedExceptions to it.
86 IllegalStateException failure = null;
87 for (T subtransaction : backingTxs.values()) {
89 subtransaction.close();
90 } catch (Exception e) {
91 // If we did not allocated failure we allocate it
93 failure = new IllegalStateException("Uncaught exception occured during closing transaction.", e);
95 // We update it with addotional exceptions, which occured during error.
96 failure.addSuppressed(e);
100 // If we have failure, we throw it at after all attempts to close.
101 if(failure != null) {