+++ /dev/null
-/*
- * Copyright (c) 2016 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.mdsal.dom.store.inmemory;
-
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkState;
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.util.concurrent.ListenableFuture;
-import com.google.common.util.concurrent.ListeningExecutorService;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.Map.Entry;
-import java.util.Optional;
-import java.util.concurrent.atomic.AtomicLong;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
-import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardWriteTransaction;
-import org.opendaylight.mdsal.dom.spi.shard.ForeignShardModificationContext;
-import org.opendaylight.mdsal.dom.spi.shard.ForeignShardThreePhaseCommitCohort;
-import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.yangtools.concepts.Identifiable;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-class InmemoryDOMDataTreeShardWriteTransaction implements DOMDataTreeShardWriteTransaction, Identifiable<String> {
-
- private static final Logger LOG = LoggerFactory.getLogger(InmemoryDOMDataTreeShardWriteTransaction.class);
-
- private enum SimpleCursorOperation {
- MERGE {
- @Override
- void applyOnLeaf(final DOMDataTreeWriteCursor cur, final PathArgument child,
- final NormalizedNode<?, ?> data) {
- cur.merge(child, data);
- }
- },
- DELETE {
- @Override
- void applyOnLeaf(final DOMDataTreeWriteCursor cur, final PathArgument child,
- final NormalizedNode<?, ?> data) {
- cur.delete(child);
- }
- },
- WRITE {
- @Override
- void applyOnLeaf(final DOMDataTreeWriteCursor cur, final PathArgument child,
- final NormalizedNode<?, ?> data) {
- cur.write(child, data);
- }
- };
-
- abstract void applyOnLeaf(DOMDataTreeWriteCursor cur, PathArgument child, NormalizedNode<?, ?> data);
-
- void apply(final DOMDataTreeWriteCursor cur, final YangInstanceIdentifier path,
- final NormalizedNode<?, ?> data) {
- int enterCount = 0;
- final Iterator<PathArgument> it = path.getPathArguments().iterator();
- if (it.hasNext()) {
- while (true) {
- final PathArgument currentArg = it.next();
- if (!it.hasNext()) {
- applyOnLeaf(cur, currentArg, data);
- break;
- }
-
- // We need to enter one level deeper, we are not at leaf (modified) node
- cur.enter(currentArg);
- enterCount++;
- }
- }
-
- cur.exit(enterCount);
- }
- }
-
- private static final AtomicLong COUNTER = new AtomicLong();
-
- private final ArrayList<DOMStoreThreePhaseCommitCohort> cohorts = new ArrayList<>();
- private final InMemoryDOMDataTreeShardChangePublisher changePublisher;
- private final InMemoryDOMDataTreeShardProducer producer;
- private final ShardDataModification modification;
- private final ListeningExecutorService executor;
- private final DataTree rootShardDataTree;
- private final String identifier;
-
- private DataTreeModification rootModification = null;
- private DOMDataTreeWriteCursor cursor;
- private boolean finished = false;
-
- InmemoryDOMDataTreeShardWriteTransaction(final InMemoryDOMDataTreeShardProducer producer,
- final ShardDataModification root,
- final DataTree rootShardDataTree,
- final InMemoryDOMDataTreeShardChangePublisher changePublisher,
- final ListeningExecutorService executor) {
- this.producer = producer;
- this.modification = requireNonNull(root);
- this.rootShardDataTree = requireNonNull(rootShardDataTree);
- this.changePublisher = requireNonNull(changePublisher);
- this.identifier = "INMEMORY-SHARD-TX-" + COUNTER.getAndIncrement();
- LOG.debug("Shard transaction{} created", identifier);
- this.executor = executor;
- }
-
- @Override
- public String getIdentifier() {
- return identifier;
- }
-
- private DOMDataTreeWriteCursor getCursor() {
- if (cursor == null) {
- cursor = new InMemoryShardDataModificationCursor(modification, this);
- }
- return cursor;
- }
-
- void delete(final YangInstanceIdentifier path) {
- final YangInstanceIdentifier relativePath = toRelative(path);
- checkArgument(!relativePath.isEmpty(), "Deletion of shard root is not allowed");
- SimpleCursorOperation.DELETE.apply(getCursor(), relativePath, null);
- }
-
- void merge(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
- SimpleCursorOperation.MERGE.apply(getCursor(), toRelative(path), data);
- }
-
- void write(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
- SimpleCursorOperation.WRITE.apply(getCursor(), toRelative(path), data);
- }
-
- private YangInstanceIdentifier toRelative(final YangInstanceIdentifier path) {
- final Optional<YangInstanceIdentifier> relative =
- path.relativeTo(modification.getPrefix().getRootIdentifier());
- checkArgument(relative.isPresent());
- return relative.get();
- }
-
- @Override
- public void close() {
- checkState(!finished, "Attempting to close an already finished transaction.");
- modification.closeTransactions();
- if (cursor != null) {
- cursor.close();
- }
- producer.transactionAborted(this);
- finished = true;
- }
-
- void cursorClosed() {
- requireNonNull(cursor);
- modification.closeCursor();
- cursor = null;
- }
-
- public boolean isFinished() {
- return finished;
- }
-
- @Override
- public void ready() {
- checkState(!finished, "Attempting to ready an already finished transaction.");
- checkState(cursor == null, "Attempting to ready a transaction that has an open cursor.");
- requireNonNull(modification, "Attempting to ready an empty transaction.");
-
- LOG.debug("Readying open transaction on shard {}", modification.getPrefix());
- rootModification = modification.seal();
-
- producer.transactionReady(this, rootModification);
- cohorts.add(new InMemoryDOMDataTreeShardThreePhaseCommitCohort(
- rootShardDataTree, rootModification, changePublisher));
- for (final Entry<DOMDataTreeIdentifier, ForeignShardModificationContext> entry :
- modification.getChildShards().entrySet()) {
- cohorts.add(new ForeignShardThreePhaseCommitCohort(entry.getKey(), entry.getValue()));
- }
- finished = true;
- }
-
- @Override
- public ListenableFuture<Void> submit() {
- LOG.debug("Submitting open transaction on shard {}", modification.getPrefix());
-
- requireNonNull(cohorts);
- checkState(!cohorts.isEmpty(), "Transaction was not readied yet.");
-
- return executor.submit(new ShardSubmitCoordinationTask(modification.getPrefix(), cohorts, this));
- }
-
- @Override
- public ListenableFuture<Boolean> validate() {
- LOG.debug("CanCommit on open transaction on shard {}", modification.getPrefix());
- return executor.submit(new ShardCanCommitCoordinationTask(modification.getPrefix(), cohorts));
- }
-
- @Override
- public ListenableFuture<Void> prepare() {
- LOG.debug("PreCommit on open transaction on shard {}", modification.getPrefix());
- return executor.submit(new ShardPreCommitCoordinationTask(modification.getPrefix(), cohorts));
- }
-
- @Override
- public ListenableFuture<Void> commit() {
- LOG.debug("Commit open transaction on shard {}", modification.getPrefix());
- return executor.submit(new ShardCommitCoordinationTask(modification.getPrefix(), cohorts, this));
- }
-
- DataTreeModification getRootModification() {
- requireNonNull(rootModification, "Transaction wasn't sealed yet");
- return rootModification;
- }
-
- void transactionCommited(final InmemoryDOMDataTreeShardWriteTransaction tx) {
- producer.onTransactionCommited(tx);
- }
-
- @Override
- public DOMDataTreeWriteCursor createCursor(final DOMDataTreeIdentifier prefix) {
- checkState(!finished, "Transaction is finished/closed already.");
- checkState(cursor == null, "Previous cursor wasn't closed");
- final YangInstanceIdentifier relativePath = toRelative(prefix.getRootIdentifier());
- final DOMDataTreeWriteCursor ret = getCursor();
- ret.enter(relativePath.getPathArguments());
- return ret;
- }
-}
Code Review / mdsal.git / blobdiff