package org.opendaylight.controller.cluster.datastore;
+import static akka.pattern.Patterns.ask;
import akka.actor.ActorPath;
import akka.actor.ActorRef;
import akka.actor.Address;
import akka.actor.Cancellable;
import akka.actor.OneForOneStrategy;
+import akka.actor.PoisonPill;
import akka.actor.Props;
import akka.actor.SupervisorStrategy;
import akka.cluster.ClusterEvent;
+import akka.dispatch.OnComplete;
import akka.japi.Creator;
import akka.japi.Function;
import akka.persistence.RecoveryCompleted;
import akka.serialization.Serialization;
+import akka.util.Timeout;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shardmanager.ShardManagerInfo;
import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shardmanager.ShardManagerInfoMBean;
import org.opendaylight.controller.cluster.datastore.messages.ActorInitialized;
+import org.opendaylight.controller.cluster.datastore.messages.AddShardReplica;
import org.opendaylight.controller.cluster.datastore.messages.CreateShard;
import org.opendaylight.controller.cluster.datastore.messages.CreateShardReply;
import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard;
import org.opendaylight.controller.cluster.datastore.messages.PeerUp;
import org.opendaylight.controller.cluster.datastore.messages.RemoteFindPrimary;
import org.opendaylight.controller.cluster.datastore.messages.RemotePrimaryShardFound;
+import org.opendaylight.controller.cluster.datastore.messages.RemoveShardReplica;
import org.opendaylight.controller.cluster.datastore.messages.ShardLeaderStateChanged;
import org.opendaylight.controller.cluster.datastore.messages.SwitchShardBehavior;
import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
-import org.opendaylight.controller.cluster.datastore.messages.AddShardReplica;
-import org.opendaylight.controller.cluster.datastore.messages.RemoveShardReplica;
import org.opendaylight.controller.cluster.datastore.utils.Dispatchers;
import org.opendaylight.controller.cluster.datastore.utils.PrimaryShardInfoFutureCache;
import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListener;
import org.opendaylight.controller.cluster.raft.RaftState;
import org.opendaylight.controller.cluster.raft.base.messages.FollowerInitialSyncUpStatus;
import org.opendaylight.controller.cluster.raft.base.messages.SwitchBehavior;
+import org.opendaylight.controller.cluster.raft.messages.AddServer;
+import org.opendaylight.controller.cluster.raft.messages.AddServerReply;
+import org.opendaylight.controller.cluster.raft.messages.ServerChangeStatus;
+import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import scala.concurrent.Future;
import scala.concurrent.duration.Duration;
import scala.concurrent.duration.FiniteDuration;
getSender().tell(messageSupplier.get(), getSelf());
}
- private NoShardLeaderException createNoShardLeaderException(ShardIdentifier shardId) {
+ private static NoShardLeaderException createNoShardLeaderException(ShardIdentifier shardId) {
return new NoShardLeaderException(null, shardId.toString());
}
- private NotInitializedException createNotInitializedException(ShardIdentifier shardId) {
+ private static NotInitializedException createNotInitializedException(ShardIdentifier shardId) {
return new NotInitializedException(String.format(
"Found primary shard %s but it's not initialized yet. Please try again later", shardId));
}
return mBean;
}
- private void onAddShardReplica (AddShardReplica shardReplicaMsg) {
- String shardName = shardReplicaMsg.getShardName();
+ private DatastoreContext getInitShardDataStoreContext() {
+ return (DatastoreContext.newBuilderFrom(datastoreContext)
+ .customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName())
+ .build());
+ }
- // verify the local shard replica is already available in the controller node
+ private void checkLocalShardExists(final String shardName, final ActorRef sender) {
if (localShards.containsKey(shardName)) {
- LOG.debug ("Local shard {} already available in the controller node", shardName);
- getSender().tell(new akka.actor.Status.Failure(
- new IllegalArgumentException(String.format("Local shard %s already exists",
- shardName))), getSelf());
- return;
+ String msg = String.format("Local shard %s already exists", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ sender.tell(new akka.actor.Status.Failure(new IllegalArgumentException(msg)), getSelf());
}
+ }
+
+ private void onAddShardReplica (AddShardReplica shardReplicaMsg) {
+ final String shardName = shardReplicaMsg.getShardName();
+
+ // verify the local shard replica is already available in the controller node
+ LOG.debug ("onAddShardReplica: {}", shardReplicaMsg);
+
+ checkLocalShardExists(shardName, getSender());
+
// verify the shard with the specified name is present in the cluster configuration
if (!(this.configuration.isShardConfigured(shardName))) {
- LOG.debug ("No module configuration exists for shard {}", shardName);
- getSender().tell(new akka.actor.Status.Failure(new IllegalArgumentException(
- String.format("No module configuration exists for shard %s",
- shardName))), getSelf());
+ String msg = String.format("No module configuration exists for shard %s", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ getSender().tell(new akka.actor.Status.Failure(new IllegalArgumentException(msg)), getSelf());
return;
}
// Create the localShard
- getSender().tell(new akka.actor.Status.Success(true), getSelf());
+ if (schemaContext == null) {
+ String msg = String.format(
+ "No SchemaContext is available in order to create a local shard instance for %s", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ getSender().tell(new akka.actor.Status.Failure(new IllegalStateException(msg)), getSelf());
+ return;
+ }
+
+ Map<String, String> peerAddresses = getPeerAddresses(shardName);
+ if (peerAddresses.isEmpty()) {
+ String msg = String.format("Cannot add replica for shard %s because no peer is available", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ getSender().tell(new akka.actor.Status.Failure(new IllegalStateException(msg)), getSelf());
+ return;
+ }
+
+ Timeout findPrimaryTimeout = new Timeout(datastoreContext.getShardInitializationTimeout().duration().$times(2));
+
+ final ActorRef sender = getSender();
+ Future<Object> futureObj = ask(getSelf(), new RemoteFindPrimary(shardName, true), findPrimaryTimeout);
+ futureObj.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object response) {
+ if (failure != null) {
+ LOG.debug ("{}: Received failure from FindPrimary for shard {}", persistenceId(), shardName, failure);
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(
+ String.format("Failed to find leader for shard %s", shardName), failure)),
+ getSelf());
+ } else {
+ if (!(response instanceof RemotePrimaryShardFound)) {
+ String msg = String.format("Failed to find leader for shard %s: received response: %s",
+ shardName, response);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(msg)), getSelf());
+ return;
+ }
+
+ RemotePrimaryShardFound message = (RemotePrimaryShardFound)response;
+ addShard (shardName, message, sender);
+ }
+ }
+ }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
+ }
+
+ private void addShard(final String shardName, final RemotePrimaryShardFound response, final ActorRef sender) {
+ checkLocalShardExists(shardName, sender);
+
+ ShardIdentifier shardId = getShardIdentifier(cluster.getCurrentMemberName(), shardName);
+ String localShardAddress = peerAddressResolver.getShardActorAddress(shardName, cluster.getCurrentMemberName());
+ final ShardInformation shardInfo = new ShardInformation(shardName, shardId,
+ getPeerAddresses(shardName), getInitShardDataStoreContext(),
+ new DefaultShardPropsCreator(), peerAddressResolver);
+ localShards.put(shardName, shardInfo);
+ shardInfo.setActor(newShardActor(schemaContext, shardInfo));
+
+ //inform ShardLeader to add this shard as a replica by sending an AddServer message
+ LOG.debug ("{}: Sending AddServer message to peer {} for shard {}", persistenceId(),
+ response.getPrimaryPath(), shardId);
+
+ Timeout addServerTimeout = new Timeout(datastoreContext
+ .getShardLeaderElectionTimeout().duration().$times(4));
+ Future<Object> futureObj = ask(getContext().actorSelection(response.getPrimaryPath()),
+ new AddServer(shardId.toString(), localShardAddress, true), addServerTimeout);
+
+ futureObj.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object addServerResponse) {
+ if (failure != null) {
+ LOG.debug ("{}: AddServer request to {} for {} failed", persistenceId(),
+ response.getPrimaryPath(), shardName, failure);
+
+ // Remove the shard
+ localShards.remove(shardName);
+ if (shardInfo.getActor() != null) {
+ shardInfo.getActor().tell(PoisonPill.getInstance(), getSelf());
+ }
+
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(
+ String.format("AddServer request to leader %s for shard %s failed",
+ response.getPrimaryPath(), shardName), failure)), getSelf());
+ } else {
+ AddServerReply reply = (AddServerReply)addServerResponse;
+ onAddServerReply(shardName, shardInfo, reply, sender, response.getPrimaryPath());
+ }
+ }
+ }, new Dispatchers(context().system().dispatchers()).
+ getDispatcher(Dispatchers.DispatcherType.Client));
return;
}
+ private void onAddServerReply (String shardName, ShardInformation shardInfo,
+ AddServerReply replyMsg, ActorRef sender, String leaderPath) {
+ LOG.debug ("{}: Received {} for shard {} from leader {}", persistenceId(), replyMsg, shardName, leaderPath);
+
+ if (replyMsg.getStatus() == ServerChangeStatus.OK) {
+ LOG.debug ("{}: Leader shard successfully added the replica shard {}", persistenceId(), shardName);
+
+ // Make the local shard voting capable
+ shardInfo.setDatastoreContext(datastoreContext, getSelf());
+
+ mBean.addLocalShard(shardInfo.getShardId().toString());
+ sender.tell(new akka.actor.Status.Success(true), getSelf());
+ } else {
+ LOG.warn ("{}: Leader failed to add shard replica {} with status {} - removing the local shard",
+ persistenceId(), shardName, replyMsg.getStatus());
+
+ //remove the local replica created
+ localShards.remove(shardName);
+ if (shardInfo.getActor() != null) {
+ shardInfo.getActor().tell(PoisonPill.getInstance(), getSelf());
+ }
+ switch (replyMsg.getStatus()) {
+ case TIMEOUT:
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(
+ String.format("The shard leader %s timed out trying to replicate the initial data to the new shard %s. Possible causes - there was a problem replicating the data or shard leadership changed while replicating the shard data",
+ leaderPath, shardName))), getSelf());
+ break;
+ case NO_LEADER:
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(String.format(
+ "There is no shard leader available for shard %s", shardName))), getSelf());
+ break;
+ default :
+ sender.tell(new akka.actor.Status.Failure(new RuntimeException(String.format(
+ "AddServer request to leader %s for shard %s failed with status %s",
+ leaderPath, shardName, replyMsg.getStatus()))), getSelf());
+ }
+ }
+ }
+
private void onRemoveShardReplica (RemoveShardReplica shardReplicaMsg) {
String shardName = shardReplicaMsg.getShardName();
- boolean deleteStatus = false;
// verify the local shard replica is available in the controller node
if (!localShards.containsKey(shardName)) {
- LOG.debug ("Local shard replica {} is not available in the controller node", shardName);
- getSender().tell(new akka.actor.Status.Failure(
- new IllegalArgumentException(String.format("Local shard %s not available",
- shardName))), getSelf());
+ String msg = String.format("Local shard %s does not", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ getSender().tell(new akka.actor.Status.Failure(new IllegalArgumentException(msg)), getSelf());
return;
}
// call RemoveShard for the shardName
private String leaderId;
private short leaderVersion;
- private final DatastoreContext datastoreContext;
+ private DatastoreContext datastoreContext;
private final ShardPropsCreator shardPropsCreator;
private final ShardPeerAddressResolver addressResolver;
void setLeaderVersion(short leaderVersion) {
this.leaderVersion = leaderVersion;
}
+
+ void setDatastoreContext(DatastoreContext datastoreContext, ActorRef sender) {
+ this.datastoreContext = datastoreContext;
+ //notify the datastoreContextchange
+ LOG.debug ("Notifying RaftPolicy change via datastoreContextChange for {}",
+ this.shardName);
+ if (actor != null) {
+ actor.tell(this.datastoreContext, sender);
+ }
+ }
}
private static class ShardManagerCreator implements Creator<ShardManager> {
Code Review / controller.git / blobdiff