package org.opendaylight.controller.cluster.datastore;
import akka.actor.ActorPath;
+import akka.actor.ActorRef;
import akka.actor.ActorSelection;
+import akka.actor.Props;
import com.google.common.base.Optional;
-import com.google.common.util.concurrent.ListenableFuture;
-import com.google.common.util.concurrent.ListenableFutureTask;
+import com.google.common.base.Preconditions;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListeningExecutorService;
+import org.opendaylight.controller.cluster.datastore.exceptions.PrimaryNotFoundException;
+import org.opendaylight.controller.cluster.datastore.exceptions.TimeoutException;
+import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
import org.opendaylight.controller.cluster.datastore.messages.CloseTransaction;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
import org.opendaylight.controller.cluster.datastore.messages.ReadyTransaction;
import org.opendaylight.controller.cluster.datastore.messages.ReadyTransactionReply;
import org.opendaylight.controller.cluster.datastore.messages.WriteData;
+import org.opendaylight.controller.cluster.datastore.shardstrategy.ShardStrategyFactory;
import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+import org.opendaylight.yangtools.util.concurrent.MappingCheckedFuture;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
-import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicLong;
/**
* </p>
*/
public class TransactionProxy implements DOMStoreReadWriteTransaction {
-
public enum TransactionType {
READ_ONLY,
WRITE_ONLY,
private static final AtomicLong counter = new AtomicLong();
- private final TransactionType readOnly;
+ private static final Logger
+ LOG = LoggerFactory.getLogger(TransactionProxy.class);
+
+
+ private final TransactionType transactionType;
private final ActorContext actorContext;
- private final Map<String, ActorSelection> remoteTransactionPaths = new HashMap<>();
- private final String identifier;
+ private final Map<String, TransactionContext> remoteTransactionPaths = new HashMap<>();
+ private final TransactionIdentifier identifier;
+ private final ListeningExecutorService executor;
+ private final SchemaContext schemaContext;
public TransactionProxy(
ActorContext actorContext,
- TransactionType readOnly) {
-
- this.identifier = "transaction-" + counter.getAndIncrement();
- this.readOnly = readOnly;
- this.actorContext = actorContext;
+ TransactionType transactionType,
+ ListeningExecutorService executor,
+ SchemaContext schemaContext
+ ) {
+ this.actorContext = Preconditions.checkNotNull(actorContext, "actorContext should not be null");
+ this.transactionType = Preconditions.checkNotNull(transactionType, "transactionType should not be null");
+ this.executor = Preconditions.checkNotNull(executor, "executor should not be null");
+ this.schemaContext = Preconditions.checkNotNull(schemaContext, "schemaContext should not be null");
- Object response = actorContext.executeShardOperation(Shard.DEFAULT_NAME, new CreateTransaction(), ActorContext.ASK_DURATION);
- if(response instanceof CreateTransactionReply){
- CreateTransactionReply reply = (CreateTransactionReply) response;
- remoteTransactionPaths.put(Shard.DEFAULT_NAME, actorContext.actorSelection(reply.getTransactionPath()));
+ String memberName = actorContext.getCurrentMemberName();
+ if(memberName == null){
+ memberName = "UNKNOWN-MEMBER";
}
+ this.identifier = TransactionIdentifier.builder().memberName(memberName).counter(counter.getAndIncrement()).build();
+
+ LOG.debug("Created txn {}", identifier);
+
}
@Override
- public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final InstanceIdentifier path) {
- final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
-
- Callable<Optional<NormalizedNode<?,?>>> call = new Callable() {
-
- @Override public Optional<NormalizedNode<?,?>> call() throws Exception {
- Object response = actorContext
- .executeRemoteOperation(remoteTransaction, new ReadData(path),
- ActorContext.ASK_DURATION);
- if(response instanceof ReadDataReply){
- ReadDataReply reply = (ReadDataReply) response;
- //FIXME : A cast should not be required here ???
- return (Optional<NormalizedNode<?, ?>>) Optional.of(reply.getNormalizedNode());
- }
+ public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(
+ final YangInstanceIdentifier path) {
- return Optional.absent();
- }
- };
-
- ListenableFutureTask<Optional<NormalizedNode<?, ?>>>
- future = ListenableFutureTask.create(call);
+ LOG.debug("txn {} read {}", identifier, path);
- //FIXME : Use a thread pool here
- Executors.newSingleThreadExecutor().submit(future);
+ createTransactionIfMissing(actorContext, path);
- return future;
+ return transactionContext(path).readData(path);
}
@Override
- public void write(InstanceIdentifier path, NormalizedNode<?, ?> data) {
- final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
- remoteTransaction.tell(new WriteData(path, data), null);
+ public void write(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
+
+ LOG.debug("txn {} write {}", identifier, path);
+
+ createTransactionIfMissing(actorContext, path);
+
+ transactionContext(path).writeData(path, data);
}
@Override
- public void merge(InstanceIdentifier path, NormalizedNode<?, ?> data) {
- final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
- remoteTransaction.tell(new MergeData(path, data), null);
+ public void merge(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
+
+ LOG.debug("txn {} merge {}", identifier, path);
+
+ createTransactionIfMissing(actorContext, path);
+
+ transactionContext(path).mergeData(path, data);
}
@Override
- public void delete(InstanceIdentifier path) {
- final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
- remoteTransaction.tell(new DeleteData(path), null);
+ public void delete(YangInstanceIdentifier path) {
+
+ LOG.debug("txn {} delete {}", identifier, path);
+
+ createTransactionIfMissing(actorContext, path);
+
+ transactionContext(path).deleteData(path);
}
@Override
public DOMStoreThreePhaseCommitCohort ready() {
List<ActorPath> cohortPaths = new ArrayList<>();
- for(ActorSelection remoteTransaction : remoteTransactionPaths.values()) {
- Object result = actorContext.executeRemoteOperation(remoteTransaction,
- new ReadyTransaction(),
- ActorContext.ASK_DURATION
- );
+ LOG.debug("txn {} Trying to get {} transactions ready for commit", identifier, remoteTransactionPaths.size());
- if(result instanceof ReadyTransactionReply){
- ReadyTransactionReply reply = (ReadyTransactionReply) result;
- cohortPaths.add(reply.getCohortPath());
+ for(TransactionContext transactionContext : remoteTransactionPaths.values()) {
+
+ LOG.debug("txn {} Readying transaction for shard {}", identifier, transactionContext.getShardName());
+
+ Object result = transactionContext.readyTransaction();
+
+ if(result.getClass().equals(ReadyTransactionReply.SERIALIZABLE_CLASS)){
+ ReadyTransactionReply reply = ReadyTransactionReply.fromSerializable(actorContext.getActorSystem(),result);
+ String resolvedCohortPath = transactionContext
+ .getResolvedCohortPath(reply.getCohortPath().toString());
+ cohortPaths.add(actorContext.actorFor(resolvedCohortPath));
}
}
- return new ThreePhaseCommitCohortProxy(cohortPaths);
+ return new ThreePhaseCommitCohortProxy(actorContext, cohortPaths, identifier.toString(), executor);
}
@Override
@Override
public void close() {
- for(ActorSelection remoteTransaction : remoteTransactionPaths.values()) {
- remoteTransaction.tell(new CloseTransaction(), null);
+ for(TransactionContext transactionContext : remoteTransactionPaths.values()) {
+ transactionContext.closeTransaction();
}
}
- private ActorSelection remoteTransactionFromIdentifier(InstanceIdentifier path){
+ private TransactionContext transactionContext(YangInstanceIdentifier path){
String shardName = shardNameFromIdentifier(path);
return remoteTransactionPaths.get(shardName);
}
- private String shardNameFromIdentifier(InstanceIdentifier path){
- return Shard.DEFAULT_NAME;
+ private String shardNameFromIdentifier(YangInstanceIdentifier path){
+ return ShardStrategyFactory.getStrategy(path).findShard(path);
+ }
+
+ private void createTransactionIfMissing(ActorContext actorContext, YangInstanceIdentifier path) {
+ String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
+
+ TransactionContext transactionContext =
+ remoteTransactionPaths.get(shardName);
+
+ if(transactionContext != null){
+ // A transaction already exists with that shard
+ return;
+ }
+
+ try {
+ Object response = actorContext.executeShardOperation(shardName,
+ new CreateTransaction(identifier.toString(),this.transactionType.ordinal() ).toSerializable(),
+ ActorContext.ASK_DURATION);
+ if (response.getClass()
+ .equals(CreateTransactionReply.SERIALIZABLE_CLASS)) {
+ CreateTransactionReply reply =
+ CreateTransactionReply.fromSerializable(response);
+
+ String transactionPath = reply.getTransactionPath();
+
+ LOG.debug("txn {} Received transaction path = {}", identifier, transactionPath);
+
+ ActorSelection transactionActor =
+ actorContext.actorSelection(transactionPath);
+ transactionContext =
+ new TransactionContextImpl(shardName, transactionPath,
+ transactionActor);
+
+ remoteTransactionPaths.put(shardName, transactionContext);
+ }
+ } catch(TimeoutException | PrimaryNotFoundException e){
+ LOG.error("txn {} Creating NoOpTransaction because of : {}", identifier, e.getMessage());
+ remoteTransactionPaths.put(shardName,
+ new NoOpTransactionContext(shardName));
+ }
+ }
+
+ private interface TransactionContext {
+ String getShardName();
+
+ String getResolvedCohortPath(String cohortPath);
+
+ public void closeTransaction();
+
+ public Object readyTransaction();
+
+ void deleteData(YangInstanceIdentifier path);
+
+ void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data);
+
+ CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readData(
+ final YangInstanceIdentifier path);
+
+ void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data);
}
+
+
+ private class TransactionContextImpl implements TransactionContext{
+ private final String shardName;
+ private final String actorPath;
+ private final ActorSelection actor;
+
+
+ private TransactionContextImpl(String shardName, String actorPath,
+ ActorSelection actor) {
+ this.shardName = shardName;
+ this.actorPath = actorPath;
+ this.actor = actor;
+ }
+
+ @Override public String getShardName() {
+ return shardName;
+ }
+
+ private ActorSelection getActor() {
+ return actor;
+ }
+
+ @Override public String getResolvedCohortPath(String cohortPath){
+ return actorContext.resolvePath(actorPath, cohortPath);
+ }
+
+ @Override public void closeTransaction() {
+ getActor().tell(
+ new CloseTransaction().toSerializable(), null);
+ }
+
+ @Override public Object readyTransaction() {
+ return actorContext.executeRemoteOperation(getActor(),
+ new ReadyTransaction().toSerializable(),
+ ActorContext.ASK_DURATION
+ );
+
+ }
+
+ @Override public void deleteData(YangInstanceIdentifier path) {
+ getActor().tell(new DeleteData(path).toSerializable(), null);
+ }
+
+ @Override public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data){
+ getActor().tell(new MergeData(path, data, schemaContext).toSerializable(), null);
+ }
+
+ @Override public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readData(
+ final YangInstanceIdentifier path) {
+
+ Callable<Optional<NormalizedNode<?,?>>> call = new Callable<Optional<NormalizedNode<?,?>>>() {
+
+ @Override public Optional<NormalizedNode<?,?>> call() throws Exception {
+ Object response = actorContext
+ .executeRemoteOperation(getActor(), new ReadData(path).toSerializable(),
+ ActorContext.ASK_DURATION);
+ if(response.getClass().equals(ReadDataReply.SERIALIZABLE_CLASS)){
+ ReadDataReply reply = ReadDataReply.fromSerializable(schemaContext,path, response);
+ if(reply.getNormalizedNode() == null){
+ return Optional.absent();
+ }
+ return Optional.<NormalizedNode<?,?>>of(reply.getNormalizedNode());
+ }
+
+ return Optional.absent();
+ }
+ };
+
+ return MappingCheckedFuture.create(executor.submit(call), ReadFailedException.MAPPER);
+ }
+
+ @Override public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
+ getActor().tell(new WriteData(path, data, schemaContext).toSerializable(), null);
+ }
+
+ }
+
+ private class NoOpTransactionContext implements TransactionContext {
+
+ private final Logger
+ LOG = LoggerFactory.getLogger(NoOpTransactionContext.class);
+
+ private final String shardName;
+
+ private ActorRef cohort;
+
+ public NoOpTransactionContext(String shardName){
+ this.shardName = shardName;
+ }
+ @Override public String getShardName() {
+ return shardName;
+
+ }
+
+ @Override public String getResolvedCohortPath(String cohortPath) {
+ return cohort.path().toString();
+ }
+
+ @Override public void closeTransaction() {
+ LOG.warn("txn {} closeTransaction called", identifier);
+ }
+
+ @Override public Object readyTransaction() {
+ LOG.warn("txn {} readyTransaction called", identifier);
+ cohort = actorContext.getActorSystem().actorOf(Props.create(NoOpCohort.class));
+ return new ReadyTransactionReply(cohort.path()).toSerializable();
+ }
+
+ @Override public void deleteData(YangInstanceIdentifier path) {
+ LOG.warn("txt {} deleteData called path = {}", identifier, path);
+ }
+
+ @Override public void mergeData(YangInstanceIdentifier path,
+ NormalizedNode<?, ?> data) {
+ LOG.warn("txn {} mergeData called path = {}", identifier, path);
+ }
+
+ @Override
+ public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readData(
+ YangInstanceIdentifier path) {
+ LOG.warn("txn {} readData called path = {}", identifier, path);
+ return Futures.immediateCheckedFuture(
+ Optional.<NormalizedNode<?, ?>>absent());
+ }
+
+ @Override public void writeData(YangInstanceIdentifier path,
+ NormalizedNode<?, ?> data) {
+ LOG.warn("txn {} writeData called path = {}", identifier, path);
+ }
+ }
+
+
+
}
Code Review / controller.git / blobdiff