X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FTransactionProxy.java;h=64f914b19fbebfa517afb2a7f23deb473a46a1a5;hp=d63ec8010dc714adc71c951bf7fd0a65937a4ce7;hb=3104f91c7d1b3ee5914d8778f87315f4ac64036d;hpb=a366d9bb224bc8e317dfbd74335250cf604d150b diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java index d63ec8010d..64f914b19f 100644 --- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java +++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java @@ -18,9 +18,11 @@ import com.google.common.base.Optional; import com.google.common.base.Preconditions; import com.google.common.collect.Lists; import com.google.common.util.concurrent.CheckedFuture; +import com.google.common.util.concurrent.ListenableFuture; import com.google.common.util.concurrent.SettableFuture; import java.util.ArrayList; import java.util.Collection; +import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; @@ -30,6 +32,7 @@ import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicBoolean; import java.util.concurrent.atomic.AtomicLong; import javax.annotation.concurrent.GuardedBy; +import org.opendaylight.controller.cluster.datastore.compat.PreLithiumTransactionContextImpl; import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException; import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier; import org.opendaylight.controller.cluster.datastore.messages.CloseTransaction; @@ -67,7 +70,19 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { public static enum TransactionType { READ_ONLY, WRITE_ONLY, - READ_WRITE + READ_WRITE; + + public static TransactionType fromInt(int type) { + if(type == WRITE_ONLY.ordinal()) { + return WRITE_ONLY; + } else if(type == READ_WRITE.ordinal()) { + return READ_WRITE; + } else if(type == READ_ONLY.ordinal()) { + return READ_ONLY; + } else { + throw new IllegalArgumentException("In TransactionType enum value" + type); + } + } } static final Mapper SAME_FAILURE_TRANSFORMER = @@ -162,7 +177,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { * PhantomReference. */ private List remoteTransactionActors; - private AtomicBoolean remoteTransactionActorsMB; + private volatile AtomicBoolean remoteTransactionActorsMB; /** * Stores the create transaction results per shard. @@ -175,8 +190,10 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { private final String transactionChainId; private final SchemaContext schemaContext; private boolean inReadyState; - private final Semaphore operationLimiter; - private final OperationCompleter operationCompleter; + + private volatile boolean initialized; + private Semaphore operationLimiter; + private OperationCompleter operationCompleter; public TransactionProxy(ActorContext actorContext, TransactionType transactionType) { this(actorContext, transactionType, ""); @@ -197,25 +214,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { memberName = "UNKNOWN-MEMBER"; } - this.identifier = TransactionIdentifier.builder().memberName(memberName).counter( - counter.getAndIncrement()).build(); - - if(transactionType == TransactionType.READ_ONLY) { - // Read-only Tx's aren't explicitly closed by the client so we create a PhantomReference - // to close the remote Tx's when this instance is no longer in use and is garbage - // collected. - - remoteTransactionActors = Lists.newArrayList(); - remoteTransactionActorsMB = new AtomicBoolean(); - - TransactionProxyCleanupPhantomReference cleanup = - new TransactionProxyCleanupPhantomReference(this); - phantomReferenceCache.put(cleanup, cleanup); - } - - // Note : Currently mailbox-capacity comes from akka.conf and not from the config-subsystem - this.operationLimiter = new Semaphore(actorContext.getTransactionOutstandingOperationLimit()); - this.operationCompleter = new OperationCompleter(operationLimiter); + this.identifier = new TransactionIdentifier(memberName, counter.getAndIncrement()); LOG.debug("Created txn {} of type {} on chain {}", identifier, transactionType, transactionChainId); } @@ -303,8 +302,19 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { } private void throttleOperation(int acquirePermits) { + if(!initialized) { + // Note : Currently mailbox-capacity comes from akka.conf and not from the config-subsystem + operationLimiter = new Semaphore(actorContext.getTransactionOutstandingOperationLimit()); + operationCompleter = new OperationCompleter(operationLimiter); + + // Make sure we write this last because it's volatile and will also publish the non-volatile writes + // above as well so they'll be visible to other threads. + initialized = true; + } + try { - if(!operationLimiter.tryAcquire(acquirePermits, actorContext.getDatastoreContext().getOperationTimeoutInSeconds(), TimeUnit.SECONDS)){ + if(!operationLimiter.tryAcquire(acquirePermits, + actorContext.getDatastoreContext().getOperationTimeoutInSeconds(), TimeUnit.SECONDS)){ LOG.warn("Failed to acquire operation permit for transaction {}", getIdentifier()); } } catch (InterruptedException e) { @@ -376,13 +386,18 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { checkModificationState(); - throttleOperation(txFutureCallbackMap.size()); - inReadyState = true; LOG.debug("Tx {} Readying {} transactions for commit", identifier, txFutureCallbackMap.size()); + if(txFutureCallbackMap.size() == 0) { + onTransactionReady(Collections.>emptyList()); + return NoOpDOMStoreThreePhaseCommitCohort.INSTANCE; + } + + throttleOperation(txFutureCallbackMap.size()); + List> cohortFutures = Lists.newArrayList(); for(TransactionFutureCallback txFutureCallback : txFutureCallbackMap.values()) { @@ -423,18 +438,6 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { protected void onTransactionReady(List> cohortFutures) { } - /** - * Method called to send a CreateTransaction message to a shard. - * - * @param shard the shard actor to send to - * @param serializedCreateMessage the serialized message to send - * @return the response Future - */ - protected Future sendCreateTransaction(ActorSelection shard, - Object serializedCreateMessage) { - return actorContext.executeOperationAsync(shard, serializedCreateMessage); - } - @Override public Object getIdentifier() { return this.identifier; @@ -453,7 +456,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { txFutureCallbackMap.clear(); - if(transactionType == TransactionType.READ_ONLY) { + if(remoteTransactionActorsMB != null) { remoteTransactionActors.clear(); remoteTransactionActorsMB.set(true); } @@ -463,14 +466,17 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { return ShardStrategyFactory.getStrategy(path).findShard(path); } + protected Future sendFindPrimaryShardAsync(String shardName) { + return actorContext.findPrimaryShardAsync(shardName); + } + private TransactionFutureCallback getOrCreateTxFutureCallback(YangInstanceIdentifier path) { String shardName = shardNameFromIdentifier(path); TransactionFutureCallback txFutureCallback = txFutureCallbackMap.get(shardName); if(txFutureCallback == null) { - Future findPrimaryFuture = actorContext.findPrimaryShardAsync(shardName); + Future findPrimaryFuture = sendFindPrimaryShardAsync(shardName); - final TransactionFutureCallback newTxFutureCallback = - new TransactionFutureCallback(shardName); + final TransactionFutureCallback newTxFutureCallback = new TransactionFutureCallback(shardName); txFutureCallback = newTxFutureCallback; txFutureCallbackMap.put(shardName, txFutureCallback); @@ -479,7 +485,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { @Override public void onComplete(Throwable failure, ActorSelection primaryShard) { if(failure != null) { - newTxFutureCallback.onComplete(failure, null); + newTxFutureCallback.createTransactionContext(failure, null); } else { newTxFutureCallback.setPrimaryShard(primaryShard); } @@ -556,10 +562,21 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { * Sets the target primary shard and initiates a CreateTransaction try. */ void setPrimaryShard(ActorSelection primaryShard) { - LOG.debug("Tx {} Primary shard found - trying create transaction", identifier); - this.primaryShard = primaryShard; - tryCreateTransaction(); + + if(transactionType == TransactionType.WRITE_ONLY && + actorContext.getDatastoreContext().isWriteOnlyTransactionOptimizationsEnabled()) { + LOG.debug("Tx {} Primary shard {} found - creating WRITE_ONLY transaction context", + identifier, primaryShard); + + // For write-only Tx's we prepare the transaction modifications directly on the shard actor + // to avoid the overhead of creating a separate transaction actor. + // FIXME: can't assume the shard version is LITHIUM_VERSION - need to obtain it somehow. + executeTxOperatonsOnComplete(createValidTransactionContext(this.primaryShard, + this.primaryShard.path().toString(), DataStoreVersions.LITHIUM_VERSION)); + } else { + tryCreateTransaction(); + } } /** @@ -569,7 +586,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { boolean invokeOperation = true; synchronized(txOperationsOnComplete) { if(transactionContext == null) { - LOG.debug("Tx {} Adding operation on complete {}", identifier); + LOG.debug("Tx {} Adding operation on complete", identifier); invokeOperation = false; txOperationsOnComplete.add(operation); @@ -596,10 +613,15 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { * Performs a CreateTransaction try async. */ private void tryCreateTransaction() { - Future createTxFuture = sendCreateTransaction(primaryShard, - new CreateTransaction(identifier.toString(), - TransactionProxy.this.transactionType.ordinal(), - getTransactionChainId()).toSerializable()); + if(LOG.isDebugEnabled()) { + LOG.debug("Tx {} Primary shard {} found - trying create transaction", identifier, primaryShard); + } + + Object serializedCreateMessage = new CreateTransaction(identifier.toString(), + TransactionProxy.this.transactionType.ordinal(), + getTransactionChainId()).toSerializable(); + + Future createTxFuture = actorContext.executeOperationAsync(primaryShard, serializedCreateMessage); createTxFuture.onComplete(this, actorContext.getClientDispatcher()); } @@ -626,6 +648,15 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { } } + createTransactionContext(failure, response); + } + + private void createTransactionContext(Throwable failure, Object response) { + // Mainly checking for state violation here to perform a volatile read of "initialized" to + // ensure updates to operationLimter et al are visible to this thread (ie we're doing + // "piggy-back" synchronization here). + Preconditions.checkState(initialized, "Tx was not propertly initialized."); + // Create the TransactionContext from the response or failure. Store the new // TransactionContext locally until we've completed invoking the // TransactionOperations. This avoids thread timing issues which could cause @@ -636,8 +667,7 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { // TransactionContext until after we've executed all cached TransactionOperations. TransactionContext localTransactionContext; if(failure != null) { - LOG.debug("Tx {} Creating NoOpTransaction because of error: {}", identifier, - failure.getMessage()); + LOG.debug("Tx {} Creating NoOpTransaction because of error", identifier, failure); localTransactionContext = new NoOpTransactionContext(failure, identifier, operationLimiter); } else if (response.getClass().equals(CreateTransactionReply.SERIALIZABLE_CLASS)) { @@ -687,13 +717,29 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { } private TransactionContext createValidTransactionContext(CreateTransactionReply reply) { - String transactionPath = reply.getTransactionPath(); + LOG.debug("Tx {} Received {}", identifier, reply); - LOG.debug("Tx {} Received transaction actor path {}", identifier, transactionPath); + return createValidTransactionContext(actorContext.actorSelection(reply.getTransactionPath()), + reply.getTransactionPath(), reply.getVersion()); + } - ActorSelection transactionActor = actorContext.actorSelection(transactionPath); + private TransactionContext createValidTransactionContext(ActorSelection transactionActor, + String transactionPath, short remoteTransactionVersion) { if (transactionType == TransactionType.READ_ONLY) { + // Read-only Tx's aren't explicitly closed by the client so we create a PhantomReference + // to close the remote Tx's when this instance is no longer in use and is garbage + // collected. + + if(remoteTransactionActorsMB == null) { + remoteTransactionActors = Lists.newArrayList(); + remoteTransactionActorsMB = new AtomicBoolean(); + + TransactionProxyCleanupPhantomReference cleanup = + new TransactionProxyCleanupPhantomReference(TransactionProxy.this); + phantomReferenceCache.put(cleanup, cleanup); + } + // Add the actor to the remoteTransactionActors list for access by the // cleanup PhantonReference. remoteTransactionActors.add(transactionActor); @@ -707,8 +753,50 @@ public class TransactionProxy implements DOMStoreReadWriteTransaction { // Check if TxActor is created in the same node boolean isTxActorLocal = actorContext.isPathLocal(transactionPath); - return new TransactionContextImpl(transactionPath, transactionActor, identifier, - actorContext, schemaContext, isTxActorLocal, reply.getVersion(), operationCompleter); + if(remoteTransactionVersion < DataStoreVersions.LITHIUM_VERSION) { + return new PreLithiumTransactionContextImpl(transactionPath, transactionActor, identifier, + transactionChainId, actorContext, schemaContext, isTxActorLocal, remoteTransactionVersion, + operationCompleter); + } else if (transactionType == TransactionType.WRITE_ONLY && + actorContext.getDatastoreContext().isWriteOnlyTransactionOptimizationsEnabled()) { + return new WriteOnlyTransactionContextImpl(transactionActor, identifier, transactionChainId, + actorContext, schemaContext, isTxActorLocal, remoteTransactionVersion, operationCompleter); + } else { + return new TransactionContextImpl(transactionActor, identifier, transactionChainId, + actorContext, schemaContext, isTxActorLocal, remoteTransactionVersion, operationCompleter); + } + } + } + + private static class NoOpDOMStoreThreePhaseCommitCohort implements DOMStoreThreePhaseCommitCohort { + static NoOpDOMStoreThreePhaseCommitCohort INSTANCE = new NoOpDOMStoreThreePhaseCommitCohort(); + + private static final ListenableFuture IMMEDIATE_VOID_SUCCESS = + com.google.common.util.concurrent.Futures.immediateFuture(null); + private static final ListenableFuture IMMEDIATE_BOOLEAN_SUCCESS = + com.google.common.util.concurrent.Futures.immediateFuture(Boolean.TRUE); + + private NoOpDOMStoreThreePhaseCommitCohort() { + } + + @Override + public ListenableFuture canCommit() { + return IMMEDIATE_BOOLEAN_SUCCESS; + } + + @Override + public ListenableFuture preCommit() { + return IMMEDIATE_VOID_SUCCESS; + } + + @Override + public ListenableFuture abort() { + return IMMEDIATE_VOID_SUCCESS; + } + + @Override + public ListenableFuture commit() { + return IMMEDIATE_VOID_SUCCESS; } } }