import com.google.common.util.concurrent.ListenableFuture;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
+import org.opendaylight.controller.cluster.DataPersistenceProvider;
import org.opendaylight.controller.cluster.common.actor.CommonConfig;
import org.opendaylight.controller.cluster.common.actor.MeteringBehavior;
import org.opendaylight.controller.cluster.datastore.ShardCommitCoordinator.CohortEntry;
+import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
import org.opendaylight.controller.cluster.datastore.identifiers.ShardTransactionIdentifier;
import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardMBeanFactory;
import scala.concurrent.duration.FiniteDuration;
import javax.annotation.Nonnull;
-import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
private final LoggingAdapter LOG =
Logging.getLogger(getContext().system(), this);
- // By default persistent will be true and can be turned off using the system
- // property shard.persistent
- private final boolean persistent;
-
/// The name of this shard
private final ShardIdentifier name;
private final ShardStats shardMBean;
- private final List<ActorSelection> dataChangeListeners = new ArrayList<>();
+ private final List<ActorSelection> dataChangeListeners = Lists.newArrayList();
+
+ private final List<DelayedListenerRegistration> delayedListenerRegistrations =
+ Lists.newArrayList();
private final DatastoreContext datastoreContext;
+ private final DataPersistenceProvider dataPersistenceProvider;
+
private SchemaContext schemaContext;
private ActorRef createSnapshotTransaction;
this.name = name;
this.datastoreContext = datastoreContext;
this.schemaContext = schemaContext;
+ this.dataPersistenceProvider = (datastoreContext.isPersistent()) ? new PersistentDataProvider() : new NonPersistentRaftDataProvider();
- String setting = System.getProperty("shard.persistent");
-
- this.persistent = !"false".equals(setting);
-
- LOG.info("Shard created : {} persistent : {}", name, persistent);
+ LOG.info("Shard created : {} persistent : {}", name, datastoreContext.isPersistent());
store = InMemoryDOMDataStoreFactory.create(name.toString(), null,
datastoreContext.getDataStoreProperties());
}
@Override
- public void onReceiveRecover(Object message) {
+ public void onReceiveRecover(Object message) throws Exception {
if(LOG.isDebugEnabled()) {
LOG.debug("onReceiveRecover: Received message {} from {}",
message.getClass().toString(),
if (message instanceof RecoveryFailure){
LOG.error(((RecoveryFailure) message).cause(), "Recovery failed because of this cause");
+
+ // Even though recovery failed, we still need to finish our recovery, eg send the
+ // ActorInitialized message and start the txCommitTimeoutCheckSchedule.
+ onRecoveryComplete();
} else {
super.onReceiveRecover(message);
}
}
@Override
- public void onReceiveCommand(Object message) {
+ public void onReceiveCommand(Object message) throws Exception {
if(LOG.isDebugEnabled()) {
LOG.debug("onReceiveCommand: Received message {} from {}", message, getSender());
}
// currently uses a same thread executor anyway.
cohortEntry.getCohort().preCommit().get();
- if(persistent) {
- Shard.this.persistData(getSender(), transactionID,
- new CompositeModificationPayload(cohortEntry.getModification().toSerializable()));
- } else {
- Shard.this.finishCommit(getSender(), transactionID);
- }
+ Shard.this.persistData(getSender(), transactionID,
+ new CompositeModificationPayload(cohortEntry.getModification().toSerializable()));
} catch (InterruptedException | ExecutionException e) {
LOG.error(e, "An exception occurred while preCommitting transaction {}",
cohortEntry.getTransactionID());
} else if (getLeader() != null) {
getLeader().forward(message, getContext());
} else {
- getSender().tell(new akka.actor.Status.Failure(new IllegalStateException(
+ getSender().tell(new akka.actor.Status.Failure(new NoShardLeaderException(
"Could not find shard leader so transaction cannot be created. This typically happens" +
- " when system is coming up or recovering and a leader is being elected. Try again" +
+ " when the system is coming up or recovering and a leader is being elected. Try again" +
" later.")), getSelf());
}
}
store.onGlobalContextUpdated(message.getSchemaContext());
}
- @VisibleForTesting void updateSchemaContext(SchemaContext schemaContext) {
+ @VisibleForTesting
+ void updateSchemaContext(SchemaContext schemaContext) {
store.onGlobalContextUpdated(schemaContext);
}
- private void registerChangeListener(
- RegisterChangeListener registerChangeListener) {
+ private void registerChangeListener(RegisterChangeListener registerChangeListener) {
- if(LOG.isDebugEnabled()) {
- LOG.debug("registerDataChangeListener for {}", registerChangeListener
- .getPath());
+ LOG.debug("registerDataChangeListener for {}", registerChangeListener.getPath());
+
+ ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
+ NormalizedNode<?, ?>>> registration;
+ if(isLeader()) {
+ registration = doChangeListenerRegistration(registerChangeListener);
+ } else {
+ LOG.debug("Shard is not the leader - delaying registration");
+
+ DelayedListenerRegistration delayedReg =
+ new DelayedListenerRegistration(registerChangeListener);
+ delayedListenerRegistrations.add(delayedReg);
+ registration = delayedReg;
}
+ ActorRef listenerRegistration = getContext().actorOf(
+ DataChangeListenerRegistration.props(registration));
- ActorSelection dataChangeListenerPath = getContext()
- .system().actorSelection(
- registerChangeListener.getDataChangeListenerPath());
+ LOG.debug("registerDataChangeListener sending reply, listenerRegistrationPath = {} ",
+ listenerRegistration.path());
+ getSender().tell(new RegisterChangeListenerReply(listenerRegistration.path()),getSelf());
+ }
+
+ private ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
+ NormalizedNode<?, ?>>> doChangeListenerRegistration(
+ RegisterChangeListener registerChangeListener) {
+
+ ActorSelection dataChangeListenerPath = getContext().system().actorSelection(
+ registerChangeListener.getDataChangeListenerPath());
// 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());
+ dataChangeListenerPath.tell(new EnableNotification(true), 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);
+ AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
+ new DataChangeListenerProxy(schemaContext, dataChangeListenerPath);
- ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
- registration = store.registerChangeListener(registerChangeListener.getPath(),
- listener, registerChangeListener.getScope());
- ActorRef listenerRegistration =
- getContext().actorOf(
- DataChangeListenerRegistration.props(registration));
-
- if(LOG.isDebugEnabled()) {
- LOG.debug(
- "registerDataChangeListener sending reply, listenerRegistrationPath = {} "
- , listenerRegistration.path().toString());
- }
+ LOG.debug("Registering for path {}", registerChangeListener.getPath());
- getSender()
- .tell(new RegisterChangeListenerReply(listenerRegistration.path()),
- getSelf());
+ return store.registerChangeListener(registerChangeListener.getPath(), listener,
+ registerChangeListener.getScope());
}
private boolean isMetricsCaptureEnabled(){
//notify shard manager
getContext().parent().tell(new ActorInitialized(), getSelf());
- // Schedule a message to be periodically sent to check if the current in-progress
- // transaction should be expired and aborted.
- FiniteDuration period = Duration.create(transactionCommitTimeout / 3, TimeUnit.MILLISECONDS);
- txCommitTimeoutCheckSchedule = getContext().system().scheduler().schedule(
- period, period, getSelf(),
- TX_COMMIT_TIMEOUT_CHECK_MESSAGE, getContext().dispatcher(), ActorRef.noSender());
+ // Being paranoid here - this method should only be called once but just in case...
+ if(txCommitTimeoutCheckSchedule == null) {
+ // Schedule a message to be periodically sent to check if the current in-progress
+ // transaction should be expired and aborted.
+ FiniteDuration period = Duration.create(transactionCommitTimeout / 3, TimeUnit.MILLISECONDS);
+ txCommitTimeoutCheckSchedule = getContext().system().scheduler().schedule(
+ period, period, getSelf(),
+ TX_COMMIT_TIMEOUT_CHECK_MESSAGE, getContext().dispatcher(), ActorRef.noSender());
+ }
}
@Override
}
}
- @Override protected void onStateChanged() {
+ @Override
+ protected void onStateChanged() {
+ boolean isLeader = isLeader();
for (ActorSelection dataChangeListener : dataChangeListeners) {
- dataChangeListener
- .tell(new EnableNotification(isLeader()), getSelf());
+ dataChangeListener.tell(new EnableNotification(isLeader), getSelf());
+ }
+
+ if(isLeader) {
+ for(DelayedListenerRegistration reg: delayedListenerRegistrations) {
+ if(!reg.isClosed()) {
+ reg.setDelegate(doChangeListenerRegistration(reg.getRegisterChangeListener()));
+ }
+ }
+
+ delayedListenerRegistrations.clear();
}
shardMBean.setRaftState(getRaftState().name());
shardMBean.setCurrentTerm(getCurrentTerm());
// If this actor is no longer the leader close all the transaction chains
- if(!isLeader()){
+ if(!isLeader){
for(Map.Entry<String, DOMStoreTransactionChain> entry : transactionChains.entrySet()){
if(LOG.isDebugEnabled()) {
LOG.debug(
}
}
+ @Override
+ protected DataPersistenceProvider persistence() {
+ return dataPersistenceProvider;
+ }
+
@Override protected void onLeaderChanged(String oldLeader, String newLeader) {
shardMBean.setLeader(newLeader);
}
return this.name.toString();
}
+ @VisibleForTesting
+ DataPersistenceProvider getDataPersistenceProvider() {
+ return dataPersistenceProvider;
+ }
+
private static class ShardCreator implements Creator<Shard> {
private static final long serialVersionUID = 1L;
ShardStats getShardMBean() {
return shardMBean;
}
+
+ private static class DelayedListenerRegistration implements
+ ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> {
+
+ private volatile boolean closed;
+
+ private final RegisterChangeListener registerChangeListener;
+
+ private volatile ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
+ NormalizedNode<?, ?>>> delegate;
+
+ DelayedListenerRegistration(RegisterChangeListener registerChangeListener) {
+ this.registerChangeListener = registerChangeListener;
+ }
+
+ void setDelegate( ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
+ NormalizedNode<?, ?>>> registration) {
+ this.delegate = registration;
+ }
+
+ boolean isClosed() {
+ return closed;
+ }
+
+ RegisterChangeListener getRegisterChangeListener() {
+ return registerChangeListener;
+ }
+
+ @Override
+ public AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> getInstance() {
+ return delegate != null ? delegate.getInstance() : null;
+ }
+
+ @Override
+ public void close() {
+ closed = true;
+ if(delegate != null) {
+ delegate.close();
+ }
+ }
+ }
}
Code Review / controller.git / blobdiff