+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.md.sal.dom.broker.impl;
-
-import static com.google.common.base.Preconditions.checkState;
-
-import javax.annotation.concurrent.GuardedBy;
-
-import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
-import org.opendaylight.yangtools.yang.common.RpcResult;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.util.concurrent.ListenableFuture;
-
-/**
- *
- *
- * Read-Write Transaction, which is composed of several
- * {@link DOMStoreWriteTransaction} transactions. Subtransaction is selected by
- * {@link LogicalDatastoreType} type parameter in:
- *
- * <ul>
- * <li>{@link #put(LogicalDatastoreType, InstanceIdentifier, NormalizedNode)}
- * <li>{@link #delete(LogicalDatastoreType, InstanceIdentifier)}
- * <li>{@link #merge(LogicalDatastoreType, InstanceIdentifier, NormalizedNode)}
- * </ul>
- * <p>
- * {@link #commit()} will result in invocation of
- * {@link DOMDataCommitImplementation#commit(org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction, Iterable)}
- * invocation with all {@link org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort} for underlying
- * transactions.
- *
- * @param <T>
- * Subtype of {@link DOMStoreWriteTransaction} which is used as
- * subtransaction.
- */
-class DOMForwardedWriteTransaction<T extends DOMStoreWriteTransaction> extends
- AbstractDOMForwardedCompositeTransaction<LogicalDatastoreType, T> implements DOMDataWriteTransaction {
-
- /**
- * Implementation of real commit.
- *
- * Transaction can not be commited if commitImpl is null,
- * so this seting this property to null is also used to
- * prevent write to
- * already commited / canceled transaction {@link #checkNotCanceled()
- *
- *
- */
- @GuardedBy("this")
- private volatile DOMDataCommitImplementation commitImpl;
-
- /**
- *
- * Future task of transaction commit.
- *
- * This value is initially null, and is once updated if transaction
- * is commited {@link #commit()}.
- * If this future exists, transaction MUST not be commited again
- * and all modifications should fail. See {@link #checkNotCommited()}.
- *
- */
- @GuardedBy("this")
- private volatile ListenableFuture<RpcResult<TransactionStatus>> commitFuture;
-
- protected DOMForwardedWriteTransaction(final Object identifier,
- final ImmutableMap<LogicalDatastoreType, T> backingTxs, final DOMDataCommitImplementation commitImpl) {
- super(identifier, backingTxs);
- this.commitImpl = Preconditions.checkNotNull(commitImpl, "commitImpl must not be null.");
- }
-
- @Override
- public void put(final LogicalDatastoreType store, final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
- checkNotReady();
- getSubtransaction(store).write(path, data);
- }
-
- @Override
- public void delete(final LogicalDatastoreType store, final InstanceIdentifier path) {
- checkNotReady();
- getSubtransaction(store).delete(path);
- }
-
- @Override
- public void merge(final LogicalDatastoreType store, final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
- checkNotReady();
- getSubtransaction(store).merge(path, data);
- }
-
- @Override
- public synchronized boolean cancel() {
- // Transaction is already canceled, we are safe to return true
- final boolean cancelationResult;
- if (commitImpl == null && commitFuture != null) {
- // Transaction is submitted, we try to cancel future.
- cancelationResult = commitFuture.cancel(false);
- } else if(commitImpl == null) {
- return true;
- } else {
- cancelationResult = true;
- commitImpl = null;
- }
- return cancelationResult;
-
- }
-
- @Override
- public synchronized ListenableFuture<RpcResult<TransactionStatus>> commit() {
- checkNotReady();
-
- ImmutableList.Builder<DOMStoreThreePhaseCommitCohort> cohortsBuilder = ImmutableList.builder();
- for (DOMStoreWriteTransaction subTx : getSubtransactions()) {
- cohortsBuilder.add(subTx.ready());
- }
- ImmutableList<DOMStoreThreePhaseCommitCohort> cohorts = cohortsBuilder.build();
- commitFuture = commitImpl.commit(this, cohorts);
-
- /*
- *We remove reference to Commit Implementation in order
- *to prevent memory leak
- */
- commitImpl = null;
- return commitFuture;
- }
-
- private void checkNotReady() {
- checkNotCommited();
- checkNotCanceled();
- }
-
- private void checkNotCanceled() {
- Preconditions.checkState(commitImpl != null, "Transaction was canceled.");
- }
-
- private void checkNotCommited() {
- checkState(commitFuture == null, "Transaction was already submited.");
- }
-
-}
\ No newline at end of file
Code Review / controller.git / blobdiff