import akka.event.Logging;
import akka.event.LoggingAdapter;
import akka.japi.Creator;
-import akka.persistence.Persistent;
-import akka.persistence.UntypedProcessor;
+import akka.serialization.Serialization;
+import com.google.common.base.Optional;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
+import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardMBeanFactory;
+import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
import org.opendaylight.controller.cluster.datastore.messages.CommitTransactionReply;
+import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChain;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChainReply;
+import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
+import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
import org.opendaylight.controller.cluster.datastore.messages.ForwardedCommitTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolved;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply;
import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
import org.opendaylight.controller.cluster.datastore.modification.Modification;
+import org.opendaylight.controller.cluster.datastore.modification.MutableCompositeModification;
+import org.opendaylight.controller.cluster.raft.ConfigParams;
+import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl;
+import org.opendaylight.controller.cluster.raft.RaftActor;
+import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+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 scala.concurrent.duration.FiniteDuration;
+import java.util.ArrayList;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
/**
* A Shard represents a portion of the logical data tree <br/>
* Our Shard uses InMemoryDataStore as it's internal representation and delegates all requests it
* </p>
*/
-public class Shard extends UntypedProcessor {
+public class Shard extends RaftActor {
+
+ private static final ConfigParams configParams = new ShardConfigParams();
public static final String DEFAULT_NAME = "default";
private final InMemoryDOMDataStore store;
- private final Map<Modification, DOMStoreThreePhaseCommitCohort>
+ private final Map<Object, DOMStoreThreePhaseCommitCohort>
modificationToCohort = new HashMap<>();
- private final LoggingAdapter log =
+ private final LoggingAdapter LOG =
Logging.getLogger(getContext().system(), this);
- private Shard(String name) {
+ // By default persistent will be true and can be turned off using the system
+ // property persistent
+ private final boolean persistent;
+
+ private final String name;
+
+ private volatile SchemaContext schemaContext;
+
+ private final ShardStats shardMBean;
+
+ private final List<ActorSelection> dataChangeListeners = new ArrayList<>();
+
+ private Shard(String name, Map<String, String> peerAddresses) {
+ super(name, peerAddresses, Optional.of(configParams));
+
+ this.name = name;
+
+ String setting = System.getProperty("shard.persistent");
+
+ this.persistent = !"false".equals(setting);
+
+ LOG.info("Creating shard : {} persistent : {}", name, persistent);
+
store = new InMemoryDOMDataStore(name, storeExecutor);
+
+ shardMBean = ShardMBeanFactory.getShardStatsMBean(name);
+
}
- public static Props props(final String name) {
+ public static Props props(final String name,
+ final Map<String, String> peerAddresses) {
return Props.create(new Creator<Shard>() {
@Override
public Shard create() throws Exception {
- return new Shard(name);
+ return new Shard(name, peerAddresses);
}
});
}
- @Override
- public void onReceive(Object message) throws Exception {
- if (message instanceof CreateTransactionChain) {
- createTransactionChain();
+
+ @Override public void onReceiveCommand(Object message) {
+ LOG.debug("Received message {} from {}", message.getClass().toString(),
+ getSender());
+
+ if (message.getClass()
+ .equals(CreateTransactionChain.SERIALIZABLE_CLASS)) {
+ if (isLeader()) {
+ createTransactionChain();
+ } else if (getLeader() != null) {
+ getLeader().forward(message, getContext());
+ }
} else if (message instanceof RegisterChangeListener) {
registerChangeListener((RegisterChangeListener) message);
} else if (message instanceof UpdateSchemaContext) {
updateSchemaContext((UpdateSchemaContext) message);
} else if (message instanceof ForwardedCommitTransaction) {
handleForwardedCommit((ForwardedCommitTransaction) message);
- } else if (message instanceof Persistent) {
- commit((Persistent) message);
+ } else if (message.getClass()
+ .equals(CreateTransaction.SERIALIZABLE_CLASS)) {
+ if (isLeader()) {
+ createTransaction(CreateTransaction.fromSerializable(message));
+ } else if (getLeader() != null) {
+ getLeader().forward(message, getContext());
+ }
+ } else if (message instanceof PeerAddressResolved) {
+ PeerAddressResolved resolved = (PeerAddressResolved) message;
+ setPeerAddress(resolved.getPeerId(), resolved.getPeerAddress());
+ } else {
+ super.onReceiveCommand(message);
+ }
+ }
+
+ private ActorRef createTypedTransactionActor(
+ CreateTransaction createTransaction, String transactionId) {
+ if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.READ_ONLY.ordinal()) {
+ shardMBean.incrementReadOnlyTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newReadOnlyTransaction(), getSelf(),
+ schemaContext), transactionId);
+
+ } else if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.READ_WRITE.ordinal()) {
+ shardMBean.incrementReadWriteTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newReadWriteTransaction(), getSelf(),
+ schemaContext), transactionId);
+
+
+ } else if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) {
+ shardMBean.incrementWriteOnlyTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newWriteOnlyTransaction(), getSelf(),
+ schemaContext), transactionId);
+ } else {
+ throw new IllegalArgumentException(
+ "CreateTransaction message has unidentified transaction type="
+ + createTransaction.getTransactionType());
}
}
- private void commit(Persistent message) {
- Modification modification = (Modification) message.payload();
+ private void createTransaction(CreateTransaction createTransaction) {
+
+ String transactionId = "shard-" + createTransaction.getTransactionId();
+ LOG.info("Creating transaction : {} ", transactionId);
+ ActorRef transactionActor =
+ createTypedTransactionActor(createTransaction, transactionId);
+
+ getSender()
+ .tell(new CreateTransactionReply(
+ Serialization.serializedActorPath(transactionActor),
+ createTransaction.getTransactionId()).toSerializable(),
+ getSelf()
+ );
+ }
+
+ private void commit(final ActorRef sender, Object serialized) {
+ Modification modification =
+ MutableCompositeModification.fromSerializable(
+ serialized, schemaContext);
DOMStoreThreePhaseCommitCohort cohort =
- modificationToCohort.remove(modification);
+ modificationToCohort.remove(serialized);
if (cohort == null) {
- log.error(
- "Could not find cohort for modification : " + modification);
- return;
+ LOG.error(
+ "Could not find cohort for modification : {}", modification);
+ LOG.info("Writing modification using a new transaction");
+ DOMStoreReadWriteTransaction transaction =
+ store.newReadWriteTransaction();
+ modification.apply(transaction);
+ DOMStoreThreePhaseCommitCohort commitCohort = transaction.ready();
+ ListenableFuture<Void> future =
+ commitCohort.preCommit();
+ try {
+ future.get();
+ future = commitCohort.commit();
+ future.get();
+ } catch (InterruptedException e) {
+ LOG.error("Failed to commit", e);
+ } catch (ExecutionException e) {
+ LOG.error("Failed to commit", e);
+ }
}
+
final ListenableFuture<Void> future = cohort.commit();
- final ActorRef sender = getSender();
+ shardMBean.incrementCommittedTransactionCount();
final ActorRef self = getSelf();
future.addListener(new Runnable() {
@Override
public void run() {
try {
future.get();
- sender.tell(new CommitTransactionReply(), self);
+
+ if (sender != null) {
+ sender
+ .tell(new CommitTransactionReply().toSerializable(),
+ self);
+ } else {
+ LOG.error("sender is null ???");
+ }
} catch (InterruptedException | ExecutionException e) {
- log.error(e, "An exception happened when committing");
+ // FIXME : Handle this properly
+ LOG.error(e, "An exception happened when committing");
}
}
}, getContext().dispatcher());
}
private void handleForwardedCommit(ForwardedCommitTransaction message) {
- log.info("received forwarded transaction");
+ Object serializedModification =
+ message.getModification().toSerializable();
+
modificationToCohort
- .put(message.getModification(), message.getCohort());
- getSelf().forward(Persistent.create(message.getModification()),
- getContext());
+ .put(serializedModification, message.getCohort());
+
+ if (persistent) {
+ this.persistData(getSender(), "identifier",
+ new CompositeModificationPayload(serializedModification));
+ } else {
+ this.commit(getSender(), serializedModification);
+ }
}
private void updateSchemaContext(UpdateSchemaContext message) {
+ this.schemaContext = message.getSchemaContext();
store.onGlobalContextUpdated(message.getSchemaContext());
}
private void registerChangeListener(
RegisterChangeListener registerChangeListener) {
- ActorSelection listenerRegistrationActor = getContext()
- .system().actorSelection(registerChangeListener.getDataChangeListenerPath());
+ LOG.debug("registerDataChangeListener for " + registerChangeListener
+ .getPath());
+
+
+ ActorSelection dataChangeListenerPath = getContext()
+ .system().actorSelection(
+ registerChangeListener.getDataChangeListenerPath());
- AsyncDataChangeListener<InstanceIdentifier, NormalizedNode<?, ?>>
- listener = new ListenerProxy(listenerRegistrationActor);
- org.opendaylight.yangtools.concepts.ListenerRegistration<AsyncDataChangeListener<InstanceIdentifier, NormalizedNode<?, ?>>>
+ // Notify the listener if notifications should be enabled or not
+ // If this shard is the leader then it will enable notifications else
+ // it will not
+ dataChangeListenerPath
+ .tell(new EnableNotification(isLeader()), getSelf());
+
+ // Now store a reference to the data change listener so it can be notified
+ // at a later point if notifications should be enabled or disabled
+ dataChangeListeners.add(dataChangeListenerPath);
+
+ AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>
+ listener =
+ new DataChangeListenerProxy(schemaContext, dataChangeListenerPath);
+
+ org.opendaylight.yangtools.concepts.ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
registration =
store.registerChangeListener(registerChangeListener.getPath(),
listener, registerChangeListener.getScope());
ActorRef listenerRegistration =
- getContext().actorOf(ListenerRegistration.props(registration));
+ getContext().actorOf(
+ DataChangeListenerRegistration.props(registration));
+
+ LOG.debug(
+ "registerDataChangeListener sending reply, listenerRegistrationPath = "
+ + listenerRegistration.path().toString());
+
getSender()
.tell(new RegisterChangeListenerReply(listenerRegistration.path()),
getSelf());
private void createTransactionChain() {
DOMStoreTransactionChain chain = store.createTransactionChain();
ActorRef transactionChain =
- getContext().actorOf(ShardTransactionChain.props(chain));
+ getContext().actorOf(
+ ShardTransactionChain.props(chain, schemaContext));
getSender()
- .tell(new CreateTransactionChainReply(transactionChain.path()),
- getSelf());
+ .tell(new CreateTransactionChainReply(transactionChain.path())
+ .toSerializable(),
+ getSelf()
+ );
+ }
+
+ @Override protected void applyState(ActorRef clientActor, String identifier,
+ Object data) {
+
+ if (data instanceof CompositeModificationPayload) {
+ Object modification =
+ ((CompositeModificationPayload) data).getModification();
+
+ if (modification != null) {
+ commit(clientActor, modification);
+ } else {
+ LOG.error("modification is null - this is very unexpected");
+ }
+
+
+ } else {
+ LOG.error("Unknown state received {}", data);
+ }
+
+ ReplicatedLogEntry lastLogEntry = getLastLogEntry();
+
+ if(lastLogEntry != null){
+ shardMBean.setLastLogIndex(lastLogEntry.getIndex());
+ shardMBean.setLastLogTerm(lastLogEntry.getTerm());
+ }
+
+ shardMBean.setCommitIndex(getCommitIndex());
+ shardMBean.setLastApplied(getLastApplied());
+
+ }
+
+ @Override protected Object createSnapshot() {
+ throw new UnsupportedOperationException("createSnapshot");
+ }
+
+ @Override protected void applySnapshot(Object snapshot) {
+ throw new UnsupportedOperationException("applySnapshot");
+ }
+
+ @Override protected void onStateChanged() {
+ for (ActorSelection dataChangeListener : dataChangeListeners) {
+ dataChangeListener
+ .tell(new EnableNotification(isLeader()), getSelf());
+ }
+
+ if (getLeaderId() != null) {
+ shardMBean.setLeader(getLeaderId());
+ }
+
+ shardMBean.setRaftState(getRaftState().name());
+ shardMBean.setCurrentTerm(getCurrentTerm());
+ }
+
+ @Override public String persistenceId() {
+ return this.name;
+ }
+
+
+ private static class ShardConfigParams extends DefaultConfigParamsImpl {
+ public static final FiniteDuration HEART_BEAT_INTERVAL =
+ new FiniteDuration(500, TimeUnit.MILLISECONDS);
+
+ @Override public FiniteDuration getHeartBeatInterval() {
+ return HEART_BEAT_INTERVAL;
+ }
}
}
Code Review / controller.git / blobdiff