+++ /dev/null
-/*
- * Copyright (c) 2015 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.cluster.datastore;
-
-import akka.actor.ActorSelection;
-import akka.dispatch.OnComplete;
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import java.util.Collection;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.atomic.AtomicLong;
-import javax.annotation.Nonnull;
-import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
-import org.opendaylight.controller.cluster.datastore.messages.PrimaryShardInfo;
-import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import scala.concurrent.Future;
-import scala.util.Try;
-
-/**
- * Factory for creating local and remote TransactionContext instances. Maintains a cache of known local
- * transaction factories.
- */
-abstract class AbstractTransactionContextFactory<F extends LocalTransactionFactory> implements AutoCloseable {
- private static final Logger LOG = LoggerFactory.getLogger(AbstractTransactionContextFactory.class);
-
- protected static final AtomicLong TX_COUNTER = new AtomicLong();
-
- private final ConcurrentMap<String, F> knownLocal = new ConcurrentHashMap<>();
- private final ActorContext actorContext;
-
- protected AbstractTransactionContextFactory(final ActorContext actorContext) {
- this.actorContext = Preconditions.checkNotNull(actorContext);
- }
-
- final ActorContext getActorContext() {
- return actorContext;
- }
-
- private TransactionContext maybeCreateLocalTransactionContext(final TransactionProxy parent, final String shardName) {
- final LocalTransactionFactory local = knownLocal.get(shardName);
- if (local != null) {
- if(LOG.isDebugEnabled()) {
- LOG.debug("Tx {} - Creating local component for shard {} using factory {}",
- parent.getIdentifier(), shardName, local);
- }
- return createLocalTransactionContext(local, parent);
- }
-
- return null;
- }
-
- private void onFindPrimaryShardSuccess(PrimaryShardInfo primaryShardInfo, TransactionProxy parent,
- String shardName, TransactionContextWrapper transactionContextAdapter) {
- if(LOG.isDebugEnabled()) {
- LOG.debug("Tx {}: Found primary {} for shard {}", parent.getIdentifier(),
- primaryShardInfo.getPrimaryShardActor(), shardName);
- }
-
- updateShardInfo(shardName, primaryShardInfo);
-
- TransactionContext localContext = maybeCreateLocalTransactionContext(parent, shardName);
- if(localContext != null) {
- transactionContextAdapter.executePriorTransactionOperations(localContext);
- } else {
- RemoteTransactionContextSupport remote = new RemoteTransactionContextSupport(transactionContextAdapter,
- parent, shardName);
- remote.setPrimaryShard(primaryShardInfo.getPrimaryShardActor());
- }
- }
-
- private void onFindPrimaryShardFailure(Throwable failure, TransactionProxy parent,
- String shardName, TransactionContextWrapper transactionContextAdapter) {
- LOG.debug("Tx {}: Find primary for shard {} failed", parent.getIdentifier(), shardName, failure);
-
- transactionContextAdapter.executePriorTransactionOperations(new NoOpTransactionContext(failure,
- parent.getIdentifier(), parent.getLimiter()));
- }
-
- final TransactionContextWrapper newTransactionAdapter(final TransactionProxy parent, final String shardName) {
- final TransactionContextWrapper transactionContextAdapter = new TransactionContextWrapper(parent.getIdentifier());
-
- Future<PrimaryShardInfo> findPrimaryFuture = findPrimaryShard(shardName);
- if(findPrimaryFuture.isCompleted()) {
- Try<PrimaryShardInfo> maybe = findPrimaryFuture.value().get();
- if(maybe.isSuccess()) {
- onFindPrimaryShardSuccess(maybe.get(), parent, shardName, transactionContextAdapter);
- } else {
- onFindPrimaryShardFailure(maybe.failed().get(), parent, shardName, transactionContextAdapter);
- }
- } else {
- findPrimaryFuture.onComplete(new OnComplete<PrimaryShardInfo>() {
- @Override
- public void onComplete(final Throwable failure, final PrimaryShardInfo primaryShardInfo) {
- if (failure == null) {
- onFindPrimaryShardSuccess(primaryShardInfo, parent, shardName, transactionContextAdapter);
- } else {
- onFindPrimaryShardFailure(failure, parent, shardName, transactionContextAdapter);
- }
- }
- }, actorContext.getClientDispatcher());
- }
-
- return transactionContextAdapter;
- }
-
- private void updateShardInfo(final String shardName, final PrimaryShardInfo primaryShardInfo) {
- final Optional<DataTree> maybeDataTree = primaryShardInfo.getLocalShardDataTree();
- if (maybeDataTree.isPresent()) {
- if(!knownLocal.containsKey(shardName)) {
- LOG.debug("Shard {} resolved to local data tree - adding local factory", shardName);
-
- F factory = factoryForShard(shardName, primaryShardInfo.getPrimaryShardActor(), maybeDataTree.get());
- knownLocal.putIfAbsent(shardName, factory);
- }
- } else if(knownLocal.containsKey(shardName)) {
- LOG.debug("Shard {} invalidating local data tree", shardName);
-
- knownLocal.remove(shardName);
- }
- }
-
- protected String getMemberName() {
- String memberName = getActorContext().getCurrentMemberName();
- if (memberName == null) {
- memberName = "UNKNOWN-MEMBER";
- }
-
- return memberName;
- }
-
- /**
- * Create an identifier for the next TransactionProxy attached to this component
- * factory.
- * @return Transaction identifier, may not be null.
- */
- protected abstract TransactionIdentifier nextIdentifier();
-
- /**
- * Find the primary shard actor.
- *
- * @param shardName Shard name
- * @return Future containing shard information.
- */
- protected abstract Future<PrimaryShardInfo> findPrimaryShard(String shardName);
-
- /**
- * Create local transaction factory for specified shard, backed by specified shard leader
- * and data tree instance.
- *
- * @param shardName
- * @param shardLeader
- * @param dataTree Backing data tree instance. The data tree may only be accessed in
- * read-only manner.
- * @return Transaction factory for local use.
- */
- protected abstract F factoryForShard(String shardName, ActorSelection shardLeader, DataTree dataTree);
-
- /**
- * Callback invoked from child transactions to push any futures, which need to
- * be waited for before the next transaction is allocated.
- * @param cohortFutures Collection of futures
- */
- protected abstract <T> void onTransactionReady(@Nonnull TransactionIdentifier transaction, @Nonnull Collection<Future<T>> cohortFutures);
-
- private static TransactionContext createLocalTransactionContext(final LocalTransactionFactory factory, final TransactionProxy parent) {
- switch(parent.getType()) {
- case READ_ONLY:
- final DOMStoreReadTransaction readOnly = factory.newReadOnlyTransaction(parent.getIdentifier());
- return new LocalTransactionContext(parent.getIdentifier(), readOnly, parent.getLimiter()) {
- @Override
- protected DOMStoreWriteTransaction getWriteDelegate() {
- throw new UnsupportedOperationException();
- }
-
- @Override
- protected DOMStoreReadTransaction getReadDelegate() {
- return readOnly;
- }
- };
- case READ_WRITE:
- final DOMStoreReadWriteTransaction readWrite = factory.newReadWriteTransaction(parent.getIdentifier());
- return new LocalTransactionContext(parent.getIdentifier(), readWrite, parent.getLimiter()) {
- @Override
- protected DOMStoreWriteTransaction getWriteDelegate() {
- return readWrite;
- }
-
- @Override
- protected DOMStoreReadTransaction getReadDelegate() {
- return readWrite;
- }
- };
- case WRITE_ONLY:
- final DOMStoreWriteTransaction writeOnly = factory.newWriteOnlyTransaction(parent.getIdentifier());
- return new LocalTransactionContext(parent.getIdentifier(), writeOnly, parent.getLimiter()) {
- @Override
- protected DOMStoreWriteTransaction getWriteDelegate() {
- return writeOnly;
- }
-
- @Override
- protected DOMStoreReadTransaction getReadDelegate() {
- throw new UnsupportedOperationException();
- }
- };
- default:
- throw new IllegalArgumentException("Invalid transaction type: " + parent.getType());
- }
- }
-}
Code Review / controller.git / blobdiff