import org.opendaylight.controller.cluster.datastore.jmx.mbeans.DatastoreConfigurationMXBeanImpl;
import org.opendaylight.controller.cluster.datastore.jmx.mbeans.DatastoreInfoMXBeanImpl;
import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot;
+import org.opendaylight.controller.cluster.datastore.shardmanager.ShardManager;
import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
import org.opendaylight.controller.cluster.datastore.utils.Dispatchers;
import org.opendaylight.controller.cluster.datastore.utils.PrimaryShardInfoFutureCache;
@VisibleForTesting
static final Object GET_SHARD_MBEAN_MESSAGE = "getShardMBeanMessage";
- @VisibleForTesting
- static final String DEFAULT_NAME = "default";
+ // FIXME: shard names should be encapsulated in their own class and this should be exposed as a constant.
+ public static final String DEFAULT_NAME = "default";
// The state of this Shard
private final ShardDataTree store;
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
+package org.opendaylight.controller.cluster.datastore;
-package org.opendaylight.controller.cluster.datastore;
-
-import static akka.pattern.Patterns.ask;
-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.Status;
-import akka.actor.SupervisorStrategy;
-import akka.cluster.ClusterEvent;
-import akka.dispatch.Futures;
-import akka.dispatch.OnComplete;
-import akka.japi.Function;
-import akka.pattern.Patterns;
-import akka.persistence.RecoveryCompleted;
-import akka.persistence.SaveSnapshotFailure;
-import akka.persistence.SaveSnapshotSuccess;
-import akka.persistence.SnapshotOffer;
-import akka.persistence.SnapshotSelectionCriteria;
-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 com.google.common.base.Preconditions;
-import com.google.common.base.Strings;
-import com.google.common.base.Supplier;
-import com.google.common.collect.Sets;
-import java.io.ByteArrayInputStream;
-import java.io.ObjectInputStream;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.apache.commons.lang3.SerializationUtils;
-import org.opendaylight.controller.cluster.common.actor.AbstractUntypedPersistentActorWithMetering;
-import org.opendaylight.controller.cluster.datastore.config.Configuration;
-import org.opendaylight.controller.cluster.datastore.config.ModuleShardConfiguration;
-import org.opendaylight.controller.cluster.datastore.exceptions.AlreadyExistsException;
-import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
-import org.opendaylight.controller.cluster.datastore.exceptions.NotInitializedException;
-import org.opendaylight.controller.cluster.datastore.exceptions.PrimaryNotFoundException;
-import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
-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.DatastoreSnapshot;
-import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard;
-import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
-import org.opendaylight.controller.cluster.datastore.messages.LocalPrimaryShardFound;
-import org.opendaylight.controller.cluster.datastore.messages.LocalShardFound;
-import org.opendaylight.controller.cluster.datastore.messages.LocalShardNotFound;
-import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolved;
-import org.opendaylight.controller.cluster.datastore.messages.PeerDown;
-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.utils.Dispatchers;
-import org.opendaylight.controller.cluster.datastore.utils.PrimaryShardInfoFutureCache;
-import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListener;
-import org.opendaylight.controller.cluster.notifications.RoleChangeNotification;
-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.client.messages.GetSnapshot;
-import org.opendaylight.controller.cluster.raft.client.messages.Shutdown;
-import org.opendaylight.controller.cluster.raft.messages.AddServer;
-import org.opendaylight.controller.cluster.raft.messages.AddServerReply;
-import org.opendaylight.controller.cluster.raft.messages.RemoveServer;
-import org.opendaylight.controller.cluster.raft.messages.RemoveServerReply;
-import org.opendaylight.controller.cluster.raft.messages.ServerChangeStatus;
-import org.opendaylight.controller.cluster.raft.messages.ServerRemoved;
-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.ExecutionContext;
-import scala.concurrent.Future;
-import scala.concurrent.duration.Duration;
-import scala.concurrent.duration.FiniteDuration;
-
-/**
- * The ShardManager has the following jobs,
- * <ul>
- * <li> Create all the local shard replicas that belong on this cluster member
- * <li> Find the address of the local shard
- * <li> Find the primary replica for any given shard
- * <li> Monitor the cluster members and store their addresses
- * <ul>
- */
-public class ShardManager extends AbstractUntypedPersistentActorWithMetering {
-
- private static final Logger LOG = LoggerFactory.getLogger(ShardManager.class);
-
- // Stores a mapping between a shard name and it's corresponding information
- // Shard names look like inventory, topology etc and are as specified in
- // configuration
- private final Map<String, ShardInformation> localShards = new HashMap<>();
-
- // The type of a ShardManager reflects the type of the datastore itself
- // A data store could be of type config/operational
- private final String type;
-
- private final ClusterWrapper cluster;
-
- private final Configuration configuration;
-
- private final String shardDispatcherPath;
-
- private final ShardManagerInfo mBean;
-
- private DatastoreContextFactory datastoreContextFactory;
-
- private final CountDownLatch waitTillReadyCountdownLatch;
-
- private final PrimaryShardInfoFutureCache primaryShardInfoCache;
-
- private final ShardPeerAddressResolver peerAddressResolver;
-
- private SchemaContext schemaContext;
-
- private DatastoreSnapshot restoreFromSnapshot;
-
- private ShardManagerSnapshot currentSnapshot;
-
- private final Set<String> shardReplicaOperationsInProgress = new HashSet<>();
-
- private final String persistenceId;
-
- /**
- */
- protected ShardManager(AbstractBuilder<?> builder) {
-
- this.cluster = builder.cluster;
- this.configuration = builder.configuration;
- this.datastoreContextFactory = builder.datastoreContextFactory;
- this.type = builder.datastoreContextFactory.getBaseDatastoreContext().getDataStoreName();
- this.shardDispatcherPath =
- new Dispatchers(context().system().dispatchers()).getDispatcherPath(Dispatchers.DispatcherType.Shard);
- this.waitTillReadyCountdownLatch = builder.waitTillReadyCountdownLatch;
- this.primaryShardInfoCache = builder.primaryShardInfoCache;
- this.restoreFromSnapshot = builder.restoreFromSnapshot;
-
- String possiblePersistenceId = datastoreContextFactory.getBaseDatastoreContext().getShardManagerPersistenceId();
- persistenceId = possiblePersistenceId != null ? possiblePersistenceId : "shard-manager-" + type;
-
- peerAddressResolver = new ShardPeerAddressResolver(type, cluster.getCurrentMemberName());
-
- // Subscribe this actor to cluster member events
- cluster.subscribeToMemberEvents(getSelf());
-
- List<String> localShardActorNames = new ArrayList<>();
- mBean = ShardManagerInfo.createShardManagerMBean(cluster.getCurrentMemberName(),
- "shard-manager-" + this.type,
- datastoreContextFactory.getBaseDatastoreContext().getDataStoreMXBeanType(),
- localShardActorNames);
- mBean.setShardManager(this);
- }
-
- @Override
- public void postStop() {
- LOG.info("Stopping ShardManager {}", persistenceId());
-
- mBean.unregisterMBean();
- }
-
- @Override
- public void handleCommand(Object message) throws Exception {
- if (message instanceof FindPrimary) {
- findPrimary((FindPrimary)message);
- } else if(message instanceof FindLocalShard){
- findLocalShard((FindLocalShard) message);
- } else if (message instanceof UpdateSchemaContext) {
- updateSchemaContext(message);
- } else if(message instanceof ActorInitialized) {
- onActorInitialized(message);
- } else if (message instanceof ClusterEvent.MemberUp){
- memberUp((ClusterEvent.MemberUp) message);
- } else if (message instanceof ClusterEvent.MemberExited){
- memberExited((ClusterEvent.MemberExited) message);
- } else if(message instanceof ClusterEvent.MemberRemoved) {
- memberRemoved((ClusterEvent.MemberRemoved) message);
- } else if(message instanceof ClusterEvent.UnreachableMember) {
- memberUnreachable((ClusterEvent.UnreachableMember)message);
- } else if(message instanceof ClusterEvent.ReachableMember) {
- memberReachable((ClusterEvent.ReachableMember) message);
- } else if(message instanceof DatastoreContextFactory) {
- onDatastoreContextFactory((DatastoreContextFactory)message);
- } else if(message instanceof RoleChangeNotification) {
- onRoleChangeNotification((RoleChangeNotification) message);
- } else if(message instanceof FollowerInitialSyncUpStatus){
- onFollowerInitialSyncStatus((FollowerInitialSyncUpStatus) message);
- } else if(message instanceof ShardNotInitializedTimeout) {
- onShardNotInitializedTimeout((ShardNotInitializedTimeout)message);
- } else if(message instanceof ShardLeaderStateChanged) {
- onLeaderStateChanged((ShardLeaderStateChanged) message);
- } else if(message instanceof SwitchShardBehavior){
- onSwitchShardBehavior((SwitchShardBehavior) message);
- } else if(message instanceof CreateShard) {
- onCreateShard((CreateShard)message);
- } else if(message instanceof AddShardReplica){
- onAddShardReplica((AddShardReplica)message);
- } else if(message instanceof ForwardedAddServerReply) {
- ForwardedAddServerReply msg = (ForwardedAddServerReply)message;
- onAddServerReply(msg.shardInfo, msg.addServerReply, getSender(), msg.leaderPath,
- msg.removeShardOnFailure);
- } else if(message instanceof ForwardedAddServerFailure) {
- ForwardedAddServerFailure msg = (ForwardedAddServerFailure)message;
- onAddServerFailure(msg.shardName, msg.failureMessage, msg.failure, getSender(), msg.removeShardOnFailure);
- } else if(message instanceof PrimaryShardFoundForContext) {
- PrimaryShardFoundForContext primaryShardFoundContext = (PrimaryShardFoundForContext)message;
- onPrimaryShardFoundContext(primaryShardFoundContext);
- } else if(message instanceof RemoveShardReplica) {
- onRemoveShardReplica((RemoveShardReplica) message);
- } else if(message instanceof WrappedShardResponse){
- onWrappedShardResponse((WrappedShardResponse) message);
- } else if(message instanceof GetSnapshot) {
- onGetSnapshot();
- } else if(message instanceof ServerRemoved){
- onShardReplicaRemoved((ServerRemoved) message);
- } else if(message instanceof SaveSnapshotSuccess) {
- onSaveSnapshotSuccess((SaveSnapshotSuccess)message);
- } else if(message instanceof SaveSnapshotFailure) {
- LOG.error("{}: SaveSnapshotFailure received for saving snapshot of shards",
- persistenceId(), ((SaveSnapshotFailure) message).cause());
- } else if(message instanceof Shutdown) {
- onShutDown();
- } else {
- unknownMessage(message);
- }
- }
-
- private void onShutDown() {
- List<Future<Boolean>> stopFutures = new ArrayList<>(localShards.size());
- for (ShardInformation info : localShards.values()) {
- if (info.getActor() != null) {
- LOG.debug("{}: Issuing gracefulStop to shard {}", persistenceId(), info.getShardId());
-
- FiniteDuration duration = info.getDatastoreContext().getShardRaftConfig().getElectionTimeOutInterval().$times(2);
- stopFutures.add(Patterns.gracefulStop(info.getActor(), duration, Shutdown.INSTANCE));
- }
- }
-
- LOG.info("Shutting down ShardManager {} - waiting on {} shards", persistenceId(), stopFutures.size());
-
- ExecutionContext dispatcher = new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client);
- Future<Iterable<Boolean>> combinedFutures = Futures.sequence(stopFutures, dispatcher);
-
- combinedFutures.onComplete(new OnComplete<Iterable<Boolean>>() {
- @Override
- public void onComplete(Throwable failure, Iterable<Boolean> results) {
- LOG.debug("{}: All shards shutdown - sending PoisonPill to self", persistenceId());
-
- self().tell(PoisonPill.getInstance(), self());
-
- if(failure != null) {
- LOG.warn("{}: An error occurred attempting to shut down the shards", persistenceId(), failure);
- } else {
- int nfailed = 0;
- for(Boolean r: results) {
- if(!r) {
- nfailed++;
- }
- }
-
- if(nfailed > 0) {
- LOG.warn("{}: {} shards did not shut down gracefully", persistenceId(), nfailed);
- }
- }
- }
- }, dispatcher);
- }
-
- private void onWrappedShardResponse(WrappedShardResponse message) {
- if (message.getResponse() instanceof RemoveServerReply) {
- onRemoveServerReply(getSender(), message.getShardId(), (RemoveServerReply) message.getResponse(),
- message.getLeaderPath());
- }
- }
-
- private void onRemoveServerReply(ActorRef originalSender, ShardIdentifier shardId, RemoveServerReply replyMsg,
- String leaderPath) {
- shardReplicaOperationsInProgress.remove(shardId);
-
- LOG.debug ("{}: Received {} for shard {}", persistenceId(), replyMsg, shardId.getShardName());
-
- if (replyMsg.getStatus() == ServerChangeStatus.OK) {
- LOG.debug ("{}: Leader shard successfully removed the replica shard {}", persistenceId(),
- shardId.getShardName());
- originalSender.tell(new akka.actor.Status.Success(null), getSelf());
- } else {
- LOG.warn ("{}: Leader failed to remove shard replica {} with status {}",
- persistenceId(), shardId, replyMsg.getStatus());
-
- Exception failure = getServerChangeException(RemoveServer.class, replyMsg.getStatus(),
- leaderPath, shardId);
- originalSender.tell(new akka.actor.Status.Failure(failure), getSelf());
- }
- }
-
- private void onPrimaryShardFoundContext(PrimaryShardFoundForContext primaryShardFoundContext) {
- if(primaryShardFoundContext.getContextMessage() instanceof AddShardReplica) {
- addShard(primaryShardFoundContext.getShardName(), primaryShardFoundContext.getRemotePrimaryShardFound(),
- getSender());
- } else if(primaryShardFoundContext.getContextMessage() instanceof RemoveShardReplica){
- removeShardReplica((RemoveShardReplica) primaryShardFoundContext.getContextMessage(),
- primaryShardFoundContext.getShardName(), primaryShardFoundContext.getPrimaryPath(), getSender());
- }
- }
-
- private void removeShardReplica(RemoveShardReplica contextMessage, final String shardName, final String primaryPath,
- final ActorRef sender) {
- if(isShardReplicaOperationInProgress(shardName, sender)) {
- return;
- }
-
- shardReplicaOperationsInProgress.add(shardName);
-
- final ShardIdentifier shardId = getShardIdentifier(contextMessage.getMemberName(), shardName);
-
- final DatastoreContext datastoreContext = newShardDatastoreContextBuilder(shardName).build();
-
- //inform ShardLeader to remove this shard as a replica by sending an RemoveServer message
- LOG.debug ("{}: Sending RemoveServer message to peer {} for shard {}", persistenceId(),
- primaryPath, shardId);
-
- Timeout removeServerTimeout = new Timeout(datastoreContext.getShardLeaderElectionTimeout().
- duration());
- Future<Object> futureObj = ask(getContext().actorSelection(primaryPath),
- new RemoveServer(shardId.toString()), removeServerTimeout);
-
- futureObj.onComplete(new OnComplete<Object>() {
- @Override
- public void onComplete(Throwable failure, Object response) {
- if (failure != null) {
- String msg = String.format("RemoveServer request to leader %s for shard %s failed",
- primaryPath, shardName);
-
- LOG.debug ("{}: {}", persistenceId(), msg, failure);
-
- // FAILURE
- sender.tell(new Status.Failure(new RuntimeException(msg, failure)), self());
- } else {
- // SUCCESS
- self().tell(new WrappedShardResponse(shardId, response, primaryPath), sender);
- }
- }
- }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
- }
-
- private void onShardReplicaRemoved(ServerRemoved message) {
- final ShardIdentifier shardId = new ShardIdentifier.Builder().fromShardIdString(message.getServerId()).build();
- final ShardInformation shardInformation = localShards.remove(shardId.getShardName());
- if(shardInformation == null) {
- LOG.debug("{} : Shard replica {} is not present in list", persistenceId(), shardId.toString());
- return;
- } else if(shardInformation.getActor() != null) {
- LOG.debug("{} : Sending Shutdown to Shard actor {}", persistenceId(), shardInformation.getActor());
- shardInformation.getActor().tell(Shutdown.INSTANCE, self());
- }
- LOG.debug("{} : Local Shard replica for shard {} has been removed", persistenceId(), shardId.getShardName());
- persistShardList();
- }
-
- private void onGetSnapshot() {
- LOG.debug("{}: onGetSnapshot", persistenceId());
-
- List<String> notInitialized = null;
- for(ShardInformation shardInfo: localShards.values()) {
- if(!shardInfo.isShardInitialized()) {
- if(notInitialized == null) {
- notInitialized = new ArrayList<>();
- }
-
- notInitialized.add(shardInfo.getShardName());
- }
- }
-
- if(notInitialized != null) {
- getSender().tell(new akka.actor.Status.Failure(new IllegalStateException(String.format(
- "%d shard(s) %s are not initialized", notInitialized.size(), notInitialized))), getSelf());
- return;
- }
-
- byte[] shardManagerSnapshot = null;
- if(currentSnapshot != null) {
- shardManagerSnapshot = SerializationUtils.serialize(currentSnapshot);
- }
-
- ActorRef replyActor = getContext().actorOf(ShardManagerGetSnapshotReplyActor.props(
- new ArrayList<>(localShards.keySet()), type, shardManagerSnapshot , getSender(), persistenceId(),
- datastoreContextFactory.getBaseDatastoreContext().getShardInitializationTimeout().duration()));
-
- for(ShardInformation shardInfo: localShards.values()) {
- shardInfo.getActor().tell(GetSnapshot.INSTANCE, replyActor);
- }
- }
-
- private void onCreateShard(CreateShard createShard) {
- LOG.debug("{}: onCreateShard: {}", persistenceId(), createShard);
-
- Object reply;
- try {
- String shardName = createShard.getModuleShardConfig().getShardName();
- if(localShards.containsKey(shardName)) {
- LOG.debug("{}: Shard {} already exists", persistenceId(), shardName);
- reply = new akka.actor.Status.Success(String.format("Shard with name %s already exists", shardName));
- } else {
- doCreateShard(createShard);
- reply = new akka.actor.Status.Success(null);
- }
- } catch (Exception e) {
- LOG.error("{}: onCreateShard failed", persistenceId(), e);
- reply = new akka.actor.Status.Failure(e);
- }
-
- if(getSender() != null && !getContext().system().deadLetters().equals(getSender())) {
- getSender().tell(reply, getSelf());
- }
- }
-
- private void doCreateShard(CreateShard createShard) {
- ModuleShardConfiguration moduleShardConfig = createShard.getModuleShardConfig();
- String shardName = moduleShardConfig.getShardName();
-
- configuration.addModuleShardConfiguration(moduleShardConfig);
-
- DatastoreContext shardDatastoreContext = createShard.getDatastoreContext();
- if(shardDatastoreContext == null) {
- shardDatastoreContext = newShardDatastoreContext(shardName);
- } else {
- shardDatastoreContext = DatastoreContext.newBuilderFrom(shardDatastoreContext).shardPeerAddressResolver(
- peerAddressResolver).build();
- }
-
- ShardIdentifier shardId = getShardIdentifier(cluster.getCurrentMemberName(), shardName);
-
- boolean shardWasInRecoveredSnapshot = currentSnapshot != null &&
- currentSnapshot.getShardList().contains(shardName);
-
- Map<String, String> peerAddresses;
- boolean isActiveMember;
- if(shardWasInRecoveredSnapshot || configuration.getMembersFromShardName(shardName).
- contains(cluster.getCurrentMemberName())) {
- peerAddresses = getPeerAddresses(shardName);
- isActiveMember = true;
- } else {
- // The local member is not in the static shard member configuration and the shard did not
- // previously exist (ie !shardWasInRecoveredSnapshot). In this case we'll create
- // the shard with no peers and with elections disabled so it stays as follower. A
- // subsequent AddServer request will be needed to make it an active member.
- isActiveMember = false;
- peerAddresses = Collections.emptyMap();
- shardDatastoreContext = DatastoreContext.newBuilderFrom(shardDatastoreContext).
- customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()).build();
- }
-
- LOG.debug("{} doCreateShard: shardId: {}, memberNames: {}, peerAddresses: {}, isActiveMember: {}",
- persistenceId(), shardId, moduleShardConfig.getShardMemberNames(), peerAddresses,
- isActiveMember);
-
- ShardInformation info = new ShardInformation(shardName, shardId, peerAddresses,
- shardDatastoreContext, createShard.getShardBuilder(), peerAddressResolver);
- info.setActiveMember(isActiveMember);
- localShards.put(info.getShardName(), info);
-
- mBean.addLocalShard(shardId.toString());
-
- if(schemaContext != null) {
- info.setActor(newShardActor(schemaContext, info));
- }
- }
-
- private DatastoreContext.Builder newShardDatastoreContextBuilder(String shardName) {
- return DatastoreContext.newBuilderFrom(datastoreContextFactory.getShardDatastoreContext(shardName)).
- shardPeerAddressResolver(peerAddressResolver);
- }
-
- private DatastoreContext newShardDatastoreContext(String shardName) {
- return newShardDatastoreContextBuilder(shardName).build();
- }
-
- private void checkReady(){
- if (isReadyWithLeaderId()) {
- LOG.info("{}: All Shards are ready - data store {} is ready, available count is {}",
- persistenceId(), type, waitTillReadyCountdownLatch.getCount());
-
- waitTillReadyCountdownLatch.countDown();
- }
- }
-
- private void onLeaderStateChanged(ShardLeaderStateChanged leaderStateChanged) {
- LOG.info("{}: Received LeaderStateChanged message: {}", persistenceId(), leaderStateChanged);
-
- ShardInformation shardInformation = findShardInformation(leaderStateChanged.getMemberId());
- if(shardInformation != null) {
- shardInformation.setLocalDataTree(leaderStateChanged.getLocalShardDataTree());
- shardInformation.setLeaderVersion(leaderStateChanged.getLeaderPayloadVersion());
- if(shardInformation.setLeaderId(leaderStateChanged.getLeaderId())) {
- primaryShardInfoCache.remove(shardInformation.getShardName());
- }
-
- checkReady();
- } else {
- LOG.debug("No shard found with member Id {}", leaderStateChanged.getMemberId());
- }
- }
-
- private void onShardNotInitializedTimeout(ShardNotInitializedTimeout message) {
- ShardInformation shardInfo = message.getShardInfo();
-
- LOG.debug("{}: Received ShardNotInitializedTimeout message for shard {}", persistenceId(),
- shardInfo.getShardName());
-
- shardInfo.removeOnShardInitialized(message.getOnShardInitialized());
-
- if(!shardInfo.isShardInitialized()) {
- LOG.debug("{}: Returning NotInitializedException for shard {}", persistenceId(), shardInfo.getShardName());
- message.getSender().tell(createNotInitializedException(shardInfo.shardId), getSelf());
- } else {
- LOG.debug("{}: Returning NoShardLeaderException for shard {}", persistenceId(), shardInfo.getShardName());
- message.getSender().tell(createNoShardLeaderException(shardInfo.shardId), getSelf());
- }
- }
-
- private void onFollowerInitialSyncStatus(FollowerInitialSyncUpStatus status) {
- LOG.info("{} Received follower initial sync status for {} status sync done {}", persistenceId(),
- status.getName(), status.isInitialSyncDone());
-
- ShardInformation shardInformation = findShardInformation(status.getName());
-
- if(shardInformation != null) {
- shardInformation.setFollowerSyncStatus(status.isInitialSyncDone());
-
- mBean.setSyncStatus(isInSync());
- }
-
- }
-
- private void onRoleChangeNotification(RoleChangeNotification roleChanged) {
- LOG.info("{}: Received role changed for {} from {} to {}", persistenceId(), roleChanged.getMemberId(),
- roleChanged.getOldRole(), roleChanged.getNewRole());
-
- ShardInformation shardInformation = findShardInformation(roleChanged.getMemberId());
- if(shardInformation != null) {
- shardInformation.setRole(roleChanged.getNewRole());
- checkReady();
- mBean.setSyncStatus(isInSync());
- }
- }
-
-
- private ShardInformation findShardInformation(String memberId) {
- for(ShardInformation info : localShards.values()){
- if(info.getShardId().toString().equals(memberId)){
- return info;
- }
- }
-
- return null;
- }
-
- private boolean isReadyWithLeaderId() {
- boolean isReady = true;
- for (ShardInformation info : localShards.values()) {
- if(!info.isShardReadyWithLeaderId()){
- isReady = false;
- break;
- }
- }
- return isReady;
- }
-
- private boolean isInSync(){
- for (ShardInformation info : localShards.values()) {
- if(!info.isInSync()){
- return false;
- }
- }
- return true;
- }
-
- private void onActorInitialized(Object message) {
- final ActorRef sender = getSender();
-
- if (sender == null) {
- return; //why is a non-actor sending this message? Just ignore.
- }
-
- String actorName = sender.path().name();
- //find shard name from actor name; actor name is stringified shardId
- ShardIdentifier shardId = ShardIdentifier.builder().fromShardIdString(actorName).build();
-
- if (shardId.getShardName() == null) {
- return;
- }
-
- markShardAsInitialized(shardId.getShardName());
- }
-
- private void markShardAsInitialized(String shardName) {
- LOG.debug("{}: Initializing shard [{}]", persistenceId(), shardName);
-
- ShardInformation shardInformation = localShards.get(shardName);
- if (shardInformation != null) {
- shardInformation.setActorInitialized();
-
- shardInformation.getActor().tell(new RegisterRoleChangeListener(), self());
- }
- }
-
- @Override
- protected void handleRecover(Object message) throws Exception {
- if (message instanceof RecoveryCompleted) {
- onRecoveryCompleted();
- } else if (message instanceof SnapshotOffer) {
- applyShardManagerSnapshot((ShardManagerSnapshot)((SnapshotOffer) message).snapshot());
- }
- }
-
- private void onRecoveryCompleted() {
- LOG.info("Recovery complete : {}", persistenceId());
-
- // We no longer persist SchemaContext modules so delete all the prior messages from the akka
- // journal on upgrade from Helium.
- deleteMessages(lastSequenceNr());
-
- if(currentSnapshot == null && restoreFromSnapshot != null &&
- restoreFromSnapshot.getShardManagerSnapshot() != null) {
- try(ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(
- restoreFromSnapshot.getShardManagerSnapshot()))) {
- ShardManagerSnapshot snapshot = (ShardManagerSnapshot) ois.readObject();
-
- LOG.debug("{}: Deserialized restored ShardManagerSnapshot: {}", persistenceId(), snapshot);
-
- applyShardManagerSnapshot(snapshot);
- } catch(Exception e) {
- LOG.error("{}: Error deserializing restored ShardManagerSnapshot", persistenceId(), e);
- }
- }
-
- createLocalShards();
- }
-
- private void findLocalShard(FindLocalShard message) {
- final ShardInformation shardInformation = localShards.get(message.getShardName());
-
- if(shardInformation == null){
- getSender().tell(new LocalShardNotFound(message.getShardName()), getSelf());
- return;
- }
-
- sendResponse(shardInformation, message.isWaitUntilInitialized(), false, new Supplier<Object>() {
- @Override
- public Object get() {
- return new LocalShardFound(shardInformation.getActor());
- }
- });
- }
-
- private void sendResponse(ShardInformation shardInformation, boolean doWait,
- boolean wantShardReady, final Supplier<Object> messageSupplier) {
- if (!shardInformation.isShardInitialized() || (wantShardReady && !shardInformation.isShardReadyWithLeaderId())) {
- if(doWait) {
- final ActorRef sender = getSender();
- final ActorRef self = self();
-
- Runnable replyRunnable = new Runnable() {
- @Override
- public void run() {
- sender.tell(messageSupplier.get(), self);
- }
- };
-
- OnShardInitialized onShardInitialized = wantShardReady ? new OnShardReady(replyRunnable) :
- new OnShardInitialized(replyRunnable);
-
- shardInformation.addOnShardInitialized(onShardInitialized);
-
- FiniteDuration timeout = shardInformation.getDatastoreContext().getShardInitializationTimeout().duration();
- if(shardInformation.isShardInitialized()) {
- // If the shard is already initialized then we'll wait enough time for the shard to
- // elect a leader, ie 2 times the election timeout.
- timeout = FiniteDuration.create(shardInformation.getDatastoreContext().getShardRaftConfig()
- .getElectionTimeOutInterval().toMillis() * 2, TimeUnit.MILLISECONDS);
- }
-
- LOG.debug("{}: Scheduling {} ms timer to wait for shard {}", persistenceId(), timeout.toMillis(),
- shardInformation.getShardName());
-
- Cancellable timeoutSchedule = getContext().system().scheduler().scheduleOnce(
- timeout, getSelf(),
- new ShardNotInitializedTimeout(shardInformation, onShardInitialized, sender),
- getContext().dispatcher(), getSelf());
-
- onShardInitialized.setTimeoutSchedule(timeoutSchedule);
-
- } else if (!shardInformation.isShardInitialized()) {
- LOG.debug("{}: Returning NotInitializedException for shard {}", persistenceId(),
- shardInformation.getShardName());
- getSender().tell(createNotInitializedException(shardInformation.shardId), getSelf());
- } else {
- LOG.debug("{}: Returning NoShardLeaderException for shard {}", persistenceId(),
- shardInformation.getShardName());
- getSender().tell(createNoShardLeaderException(shardInformation.shardId), getSelf());
- }
-
- return;
- }
-
- getSender().tell(messageSupplier.get(), getSelf());
- }
-
- private static NoShardLeaderException createNoShardLeaderException(ShardIdentifier shardId) {
- return new NoShardLeaderException(null, shardId.toString());
- }
-
- 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));
- }
-
- private void memberRemoved(ClusterEvent.MemberRemoved message) {
- String memberName = message.member().roles().iterator().next();
-
- LOG.debug("{}: Received MemberRemoved: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- peerAddressResolver.removePeerAddress(memberName);
-
- for(ShardInformation info : localShards.values()){
- info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
- }
- }
-
- private void memberExited(ClusterEvent.MemberExited message) {
- String memberName = message.member().roles().iterator().next();
-
- LOG.debug("{}: Received MemberExited: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- peerAddressResolver.removePeerAddress(memberName);
-
- for(ShardInformation info : localShards.values()){
- info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
- }
- }
-
- private void memberUp(ClusterEvent.MemberUp message) {
- String memberName = message.member().roles().iterator().next();
-
- LOG.debug("{}: Received MemberUp: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- addPeerAddress(memberName, message.member().address());
-
- checkReady();
- }
-
- private void addPeerAddress(String memberName, Address address) {
- peerAddressResolver.addPeerAddress(memberName, address);
-
- for(ShardInformation info : localShards.values()){
- String shardName = info.getShardName();
- String peerId = getShardIdentifier(memberName, shardName).toString();
- info.updatePeerAddress(peerId, peerAddressResolver.getShardActorAddress(shardName, memberName), getSelf());
-
- info.peerUp(memberName, peerId, getSelf());
- }
- }
-
- private void memberReachable(ClusterEvent.ReachableMember message) {
- String memberName = message.member().roles().iterator().next();
- LOG.debug("Received ReachableMember: memberName {}, address: {}", memberName, message.member().address());
-
- addPeerAddress(memberName, message.member().address());
-
- markMemberAvailable(memberName);
- }
-
- private void memberUnreachable(ClusterEvent.UnreachableMember message) {
- String memberName = message.member().roles().iterator().next();
- LOG.debug("Received UnreachableMember: memberName {}, address: {}", memberName, message.member().address());
-
- markMemberUnavailable(memberName);
- }
-
- private void markMemberUnavailable(final String memberName) {
- for(ShardInformation info : localShards.values()){
- String leaderId = info.getLeaderId();
- if(leaderId != null && leaderId.contains(memberName)) {
- LOG.debug("Marking Leader {} as unavailable.", leaderId);
- info.setLeaderAvailable(false);
-
- primaryShardInfoCache.remove(info.getShardName());
- }
-
- info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
- }
- }
-
- private void markMemberAvailable(final String memberName) {
- for(ShardInformation info : localShards.values()){
- String leaderId = info.getLeaderId();
- if(leaderId != null && leaderId.contains(memberName)) {
- LOG.debug("Marking Leader {} as available.", leaderId);
- info.setLeaderAvailable(true);
- }
-
- info.peerUp(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
- }
- }
-
- private void onDatastoreContextFactory(DatastoreContextFactory factory) {
- datastoreContextFactory = factory;
- for (ShardInformation info : localShards.values()) {
- info.setDatastoreContext(newShardDatastoreContext(info.getShardName()), getSelf());
- }
- }
-
- private void onSwitchShardBehavior(SwitchShardBehavior message) {
- ShardIdentifier identifier = ShardIdentifier.builder().fromShardIdString(message.getShardName()).build();
-
- ShardInformation shardInformation = localShards.get(identifier.getShardName());
-
- if(shardInformation != null && shardInformation.getActor() != null) {
- shardInformation.getActor().tell(
- new SwitchBehavior(message.getNewState(), message.getTerm()), getSelf());
- } else {
- LOG.warn("Could not switch the behavior of shard {} to {} - shard is not yet available",
- message.getShardName(), message.getNewState());
- }
- }
-
- /**
- * Notifies all the local shards of a change in the schema context
- *
- * @param message
- */
- private void updateSchemaContext(final Object message) {
- schemaContext = ((UpdateSchemaContext) message).getSchemaContext();
-
- LOG.debug("Got updated SchemaContext: # of modules {}", schemaContext.getAllModuleIdentifiers().size());
-
- for (ShardInformation info : localShards.values()) {
- if (info.getActor() == null) {
- LOG.debug("Creating Shard {}", info.getShardId());
- info.setActor(newShardActor(schemaContext, info));
- } else {
- info.getActor().tell(message, getSelf());
- }
- }
- }
-
- @VisibleForTesting
- protected ClusterWrapper getCluster() {
- return cluster;
- }
-
- @VisibleForTesting
- protected ActorRef newShardActor(final SchemaContext schemaContext, ShardInformation info) {
- return getContext().actorOf(info.newProps(schemaContext)
- .withDispatcher(shardDispatcherPath), info.getShardId().toString());
- }
-
- private void findPrimary(FindPrimary message) {
- LOG.debug("{}: In findPrimary: {}", persistenceId(), message);
-
- final String shardName = message.getShardName();
- final boolean canReturnLocalShardState = !(message instanceof RemoteFindPrimary);
-
- // First see if the there is a local replica for the shard
- final ShardInformation info = localShards.get(shardName);
- if (info != null && info.isActiveMember()) {
- sendResponse(info, message.isWaitUntilReady(), true, new Supplier<Object>() {
- @Override
- public Object get() {
- String primaryPath = info.getSerializedLeaderActor();
- Object found = canReturnLocalShardState && info.isLeader() ?
- new LocalPrimaryShardFound(primaryPath, info.getLocalShardDataTree().get()) :
- new RemotePrimaryShardFound(primaryPath, info.getLeaderVersion());
-
- if(LOG.isDebugEnabled()) {
- LOG.debug("{}: Found primary for {}: {}", persistenceId(), shardName, found);
- }
-
- return found;
- }
- });
-
- return;
- }
-
- Collection<String> visitedAddresses;
- if(message instanceof RemoteFindPrimary) {
- visitedAddresses = ((RemoteFindPrimary)message).getVisitedAddresses();
- } else {
- visitedAddresses = new ArrayList<>();
- }
-
- visitedAddresses.add(peerAddressResolver.getShardManagerActorPathBuilder(cluster.getSelfAddress()).toString());
-
- for(String address: peerAddressResolver.getShardManagerPeerActorAddresses()) {
- if(visitedAddresses.contains(address)) {
- continue;
- }
-
- LOG.debug("{}: findPrimary for {} forwarding to remote ShardManager {}, visitedAddresses: {}",
- persistenceId(), shardName, address, visitedAddresses);
-
- getContext().actorSelection(address).forward(new RemoteFindPrimary(shardName,
- message.isWaitUntilReady(), visitedAddresses), getContext());
- return;
- }
-
- LOG.debug("{}: No shard found for {}", persistenceId(), shardName);
-
- getSender().tell(new PrimaryNotFoundException(
- String.format("No primary shard found for %s.", shardName)), getSelf());
- }
-
- /**
- * Construct the name of the shard actor given the name of the member on
- * which the shard resides and the name of the shard
- *
- * @param memberName
- * @param shardName
- * @return
- */
- private ShardIdentifier getShardIdentifier(String memberName, String shardName){
- return peerAddressResolver.getShardIdentifier(memberName, shardName);
- }
-
- /**
- * Create shards that are local to the member on which the ShardManager
- * runs
- *
- */
- private void createLocalShards() {
- String memberName = this.cluster.getCurrentMemberName();
- Collection<String> memberShardNames = this.configuration.getMemberShardNames(memberName);
-
- Map<String, DatastoreSnapshot.ShardSnapshot> shardSnapshots = new HashMap<>();
- if(restoreFromSnapshot != null)
- {
- for(DatastoreSnapshot.ShardSnapshot snapshot: restoreFromSnapshot.getShardSnapshots()) {
- shardSnapshots.put(snapshot.getName(), snapshot);
- }
- }
-
- restoreFromSnapshot = null; // null out to GC
-
- for(String shardName : memberShardNames){
- ShardIdentifier shardId = getShardIdentifier(memberName, shardName);
-
- LOG.debug("{}: Creating local shard: {}", persistenceId(), shardId);
-
- Map<String, String> peerAddresses = getPeerAddresses(shardName);
- localShards.put(shardName, new ShardInformation(shardName, shardId, peerAddresses,
- newShardDatastoreContext(shardName), Shard.builder().restoreFromSnapshot(
- shardSnapshots.get(shardName)), peerAddressResolver));
- mBean.addLocalShard(shardId.toString());
- }
- }
-
- /**
- * Given the name of the shard find the addresses of all it's peers
- *
- * @param shardName
- */
- private Map<String, String> getPeerAddresses(String shardName) {
- Collection<String> members = configuration.getMembersFromShardName(shardName);
- Map<String, String> peerAddresses = new HashMap<>();
-
- String currentMemberName = this.cluster.getCurrentMemberName();
-
- for(String memberName : members) {
- if(!currentMemberName.equals(memberName)) {
- ShardIdentifier shardId = getShardIdentifier(memberName, shardName);
- String address = peerAddressResolver.getShardActorAddress(shardName, memberName);
- peerAddresses.put(shardId.toString(), address);
- }
- }
- return peerAddresses;
- }
-
- @Override
- public SupervisorStrategy supervisorStrategy() {
-
- return new OneForOneStrategy(10, Duration.create("1 minute"),
- new Function<Throwable, SupervisorStrategy.Directive>() {
- @Override
- public SupervisorStrategy.Directive apply(Throwable t) {
- LOG.warn("Supervisor Strategy caught unexpected exception - resuming", t);
- return SupervisorStrategy.resume();
- }
- }
- );
-
- }
-
- @Override
- public String persistenceId() {
- return persistenceId;
- }
-
- @VisibleForTesting
- ShardManagerInfoMBean getMBean(){
- return mBean;
- }
-
- private boolean isShardReplicaOperationInProgress(final String shardName, final ActorRef sender) {
- if (shardReplicaOperationsInProgress.contains(shardName)) {
- String msg = String.format("A shard replica operation for %s is already in progress", shardName);
- LOG.debug ("{}: {}", persistenceId(), msg);
- sender.tell(new akka.actor.Status.Failure(new IllegalStateException(msg)), getSelf());
- return true;
- }
-
- return false;
- }
-
- private void onAddShardReplica (final AddShardReplica shardReplicaMsg) {
- final String shardName = shardReplicaMsg.getShardName();
-
- LOG.debug("{}: onAddShardReplica: {}", persistenceId(), shardReplicaMsg);
-
- // verify the shard with the specified name is present in the cluster configuration
- if (!(this.configuration.isShardConfigured(shardName))) {
- 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
- 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;
- }
-
- findPrimary(shardName, new AutoFindPrimaryFailureResponseHandler(getSender(), shardName, persistenceId(), getSelf()) {
- @Override
- public void onRemotePrimaryShardFound(RemotePrimaryShardFound response) {
- getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
- }
-
- @Override
- public void onLocalPrimaryFound(LocalPrimaryShardFound message) {
- sendLocalReplicaAlreadyExistsReply(getShardName(), getTargetActor());
- }
-
- });
- }
-
- private void sendLocalReplicaAlreadyExistsReply(String shardName, ActorRef sender) {
- String msg = String.format("Local shard %s already exists", shardName);
- LOG.debug ("{}: {}", persistenceId(), msg);
- sender.tell(new akka.actor.Status.Failure(new AlreadyExistsException(msg)), getSelf());
- }
-
- private void addShard(final String shardName, final RemotePrimaryShardFound response, final ActorRef sender) {
- if(isShardReplicaOperationInProgress(shardName, sender)) {
- return;
- }
-
- shardReplicaOperationsInProgress.add(shardName);
-
- final ShardInformation shardInfo;
- final boolean removeShardOnFailure;
- ShardInformation existingShardInfo = localShards.get(shardName);
- if(existingShardInfo == null) {
- removeShardOnFailure = true;
- ShardIdentifier shardId = getShardIdentifier(cluster.getCurrentMemberName(), shardName);
-
- DatastoreContext datastoreContext = newShardDatastoreContextBuilder(shardName).customRaftPolicyImplementation(
- DisableElectionsRaftPolicy.class.getName()).build();
-
- shardInfo = new ShardInformation(shardName, shardId, getPeerAddresses(shardName), datastoreContext,
- Shard.builder(), peerAddressResolver);
- shardInfo.setActiveMember(false);
- localShards.put(shardName, shardInfo);
- shardInfo.setActor(newShardActor(schemaContext, shardInfo));
- } else {
- removeShardOnFailure = false;
- shardInfo = existingShardInfo;
- }
-
- String localShardAddress = peerAddressResolver.getShardActorAddress(shardName, cluster.getCurrentMemberName());
-
- //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(), shardInfo.getShardId());
-
- Timeout addServerTimeout = new Timeout(shardInfo.getDatastoreContext().getShardLeaderElectionTimeout().
- duration());
- Future<Object> futureObj = ask(getContext().actorSelection(response.getPrimaryPath()),
- new AddServer(shardInfo.getShardId().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);
-
- String msg = String.format("AddServer request to leader %s for shard %s failed",
- response.getPrimaryPath(), shardName);
- self().tell(new ForwardedAddServerFailure(shardName, msg, failure, removeShardOnFailure), sender);
- } else {
- self().tell(new ForwardedAddServerReply(shardInfo, (AddServerReply)addServerResponse,
- response.getPrimaryPath(), removeShardOnFailure), sender);
- }
- }
- }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
- }
-
- private void onAddServerFailure(String shardName, String message, Throwable failure, ActorRef sender,
- boolean removeShardOnFailure) {
- shardReplicaOperationsInProgress.remove(shardName);
-
- if(removeShardOnFailure) {
- ShardInformation shardInfo = localShards.remove(shardName);
- if (shardInfo.getActor() != null) {
- shardInfo.getActor().tell(PoisonPill.getInstance(), getSelf());
- }
- }
-
- sender.tell(new akka.actor.Status.Failure(message == null ? failure :
- new RuntimeException(message, failure)), getSelf());
- }
-
- private void onAddServerReply(ShardInformation shardInfo, AddServerReply replyMsg, ActorRef sender,
- String leaderPath, boolean removeShardOnFailure) {
- String shardName = shardInfo.getShardName();
- shardReplicaOperationsInProgress.remove(shardName);
-
- 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(newShardDatastoreContext(shardName), getSelf());
- shardInfo.setActiveMember(true);
- persistShardList();
-
- mBean.addLocalShard(shardInfo.getShardId().toString());
- sender.tell(new akka.actor.Status.Success(null), getSelf());
- } else if(replyMsg.getStatus() == ServerChangeStatus.ALREADY_EXISTS) {
- sendLocalReplicaAlreadyExistsReply(shardName, sender);
- } else {
- LOG.warn ("{}: Leader failed to add shard replica {} with status {}",
- persistenceId(), shardName, replyMsg.getStatus());
-
- Exception failure = getServerChangeException(AddServer.class, replyMsg.getStatus(), leaderPath, shardInfo.getShardId());
-
- onAddServerFailure(shardName, null, failure, sender, removeShardOnFailure);
- }
- }
-
- private static Exception getServerChangeException(Class<?> serverChange, ServerChangeStatus serverChangeStatus,
- String leaderPath, ShardIdentifier shardId) {
- Exception failure;
- switch (serverChangeStatus) {
- case TIMEOUT:
- failure = new TimeoutException(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, shardId.getShardName()));
- break;
- case NO_LEADER:
- failure = createNoShardLeaderException(shardId);
- break;
- case NOT_SUPPORTED:
- failure = new UnsupportedOperationException(String.format("%s request is not supported for shard %s",
- serverChange.getSimpleName(), shardId.getShardName()));
- break;
- default :
- failure = new RuntimeException(String.format(
- "%s request to leader %s for shard %s failed with status %s",
- serverChange.getSimpleName(), leaderPath, shardId.getShardName(), serverChangeStatus));
- }
- return failure;
- }
-
- private void onRemoveShardReplica (final RemoveShardReplica shardReplicaMsg) {
- LOG.debug("{}: onRemoveShardReplica: {}", persistenceId(), shardReplicaMsg);
-
- findPrimary(shardReplicaMsg.getShardName(), new AutoFindPrimaryFailureResponseHandler(getSender(),
- shardReplicaMsg.getShardName(), persistenceId(), getSelf()) {
- @Override
- public void onRemotePrimaryShardFound(RemotePrimaryShardFound response) {
- getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
- }
-
- @Override
- public void onLocalPrimaryFound(LocalPrimaryShardFound response) {
- getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
- }
- });
- }
-
- private void persistShardList() {
- List<String> shardList = new ArrayList<>(localShards.keySet());
- for (ShardInformation shardInfo : localShards.values()) {
- if (!shardInfo.isActiveMember()) {
- shardList.remove(shardInfo.getShardName());
- }
- }
- LOG.debug ("{}: persisting the shard list {}", persistenceId(), shardList);
- saveSnapshot(updateShardManagerSnapshot(shardList));
- }
-
- private ShardManagerSnapshot updateShardManagerSnapshot(List<String> shardList) {
- currentSnapshot = new ShardManagerSnapshot(shardList);
- return currentSnapshot;
- }
-
- private void applyShardManagerSnapshot(ShardManagerSnapshot snapshot) {
- currentSnapshot = snapshot;
-
- LOG.debug ("{}: onSnapshotOffer: {}", persistenceId(), currentSnapshot);
-
- String currentMember = cluster.getCurrentMemberName();
- Set<String> configuredShardList =
- new HashSet<>(configuration.getMemberShardNames(currentMember));
- for (String shard : currentSnapshot.getShardList()) {
- if (!configuredShardList.contains(shard)) {
- // add the current member as a replica for the shard
- LOG.debug ("{}: adding shard {}", persistenceId(), shard);
- configuration.addMemberReplicaForShard(shard, currentMember);
- } else {
- configuredShardList.remove(shard);
- }
- }
- for (String shard : configuredShardList) {
- // remove the member as a replica for the shard
- LOG.debug ("{}: removing shard {}", persistenceId(), shard);
- configuration.removeMemberReplicaForShard(shard, currentMember);
- }
- }
-
- private void onSaveSnapshotSuccess (SaveSnapshotSuccess successMessage) {
- LOG.debug ("{} saved ShardManager snapshot successfully. Deleting the prev snapshot if available",
- persistenceId());
- deleteSnapshots(new SnapshotSelectionCriteria(scala.Long.MaxValue(), successMessage.metadata().timestamp() - 1,
- 0, 0));
- }
-
- private static class ForwardedAddServerReply {
- ShardInformation shardInfo;
- AddServerReply addServerReply;
- String leaderPath;
- boolean removeShardOnFailure;
-
- ForwardedAddServerReply(ShardInformation shardInfo, AddServerReply addServerReply, String leaderPath,
- boolean removeShardOnFailure) {
- this.shardInfo = shardInfo;
- this.addServerReply = addServerReply;
- this.leaderPath = leaderPath;
- this.removeShardOnFailure = removeShardOnFailure;
- }
- }
-
- private static class ForwardedAddServerFailure {
- String shardName;
- String failureMessage;
- Throwable failure;
- boolean removeShardOnFailure;
-
- ForwardedAddServerFailure(String shardName, String failureMessage, Throwable failure,
- boolean removeShardOnFailure) {
- this.shardName = shardName;
- this.failureMessage = failureMessage;
- this.failure = failure;
- this.removeShardOnFailure = removeShardOnFailure;
- }
- }
-
- @VisibleForTesting
- protected static class ShardInformation {
- private final ShardIdentifier shardId;
- private final String shardName;
- private ActorRef actor;
- private final Map<String, String> initialPeerAddresses;
- private Optional<DataTree> localShardDataTree;
- private boolean leaderAvailable = false;
-
- // flag that determines if the actor is ready for business
- private boolean actorInitialized = false;
-
- private boolean followerSyncStatus = false;
-
- private final Set<OnShardInitialized> onShardInitializedSet = Sets.newHashSet();
- private String role ;
- private String leaderId;
- private short leaderVersion;
-
- private DatastoreContext datastoreContext;
- private Shard.AbstractBuilder<?, ?> builder;
- private final ShardPeerAddressResolver addressResolver;
- private boolean isActiveMember = true;
-
- private ShardInformation(String shardName, ShardIdentifier shardId,
- Map<String, String> initialPeerAddresses, DatastoreContext datastoreContext,
- Shard.AbstractBuilder<?, ?> builder, ShardPeerAddressResolver addressResolver) {
- this.shardName = shardName;
- this.shardId = shardId;
- this.initialPeerAddresses = initialPeerAddresses;
- this.datastoreContext = datastoreContext;
- this.builder = builder;
- this.addressResolver = addressResolver;
- }
-
- Props newProps(SchemaContext schemaContext) {
- Preconditions.checkNotNull(builder);
- Props props = builder.id(shardId).peerAddresses(initialPeerAddresses).datastoreContext(datastoreContext).
- schemaContext(schemaContext).props();
- builder = null;
- return props;
- }
-
- String getShardName() {
- return shardName;
- }
-
- @Nullable
- ActorRef getActor(){
- return actor;
- }
-
- void setActor(ActorRef actor) {
- this.actor = actor;
- }
-
- ShardIdentifier getShardId() {
- return shardId;
- }
-
- void setLocalDataTree(Optional<DataTree> localShardDataTree) {
- this.localShardDataTree = localShardDataTree;
- }
-
- Optional<DataTree> getLocalShardDataTree() {
- return localShardDataTree;
- }
-
- DatastoreContext getDatastoreContext() {
- return datastoreContext;
- }
-
- void setDatastoreContext(DatastoreContext datastoreContext, ActorRef sender) {
- this.datastoreContext = datastoreContext;
- if (actor != null) {
- LOG.debug ("Sending new DatastoreContext to {}", shardId);
- actor.tell(this.datastoreContext, sender);
- }
- }
-
- void updatePeerAddress(String peerId, String peerAddress, ActorRef sender){
- LOG.info("updatePeerAddress for peer {} with address {}", peerId, peerAddress);
-
- if(actor != null) {
- if(LOG.isDebugEnabled()) {
- LOG.debug("Sending PeerAddressResolved for peer {} with address {} to {}",
- peerId, peerAddress, actor.path());
- }
-
- actor.tell(new PeerAddressResolved(peerId, peerAddress), sender);
- }
-
- notifyOnShardInitializedCallbacks();
- }
-
- void peerDown(String memberName, String peerId, ActorRef sender) {
- if(actor != null) {
- actor.tell(new PeerDown(memberName, peerId), sender);
- }
- }
-
- void peerUp(String memberName, String peerId, ActorRef sender) {
- if(actor != null) {
- actor.tell(new PeerUp(memberName, peerId), sender);
- }
- }
-
- boolean isShardReady() {
- return !RaftState.Candidate.name().equals(role) && !Strings.isNullOrEmpty(role);
- }
-
- boolean isShardReadyWithLeaderId() {
- return leaderAvailable && isShardReady() && !RaftState.IsolatedLeader.name().equals(role) &&
- (isLeader() || addressResolver.resolve(leaderId) != null);
- }
-
- boolean isShardInitialized() {
- return getActor() != null && actorInitialized;
- }
-
- boolean isLeader() {
- return Objects.equal(leaderId, shardId.toString());
- }
-
- String getSerializedLeaderActor() {
- if(isLeader()) {
- return Serialization.serializedActorPath(getActor());
- } else {
- return addressResolver.resolve(leaderId);
- }
- }
-
- void setActorInitialized() {
- LOG.debug("Shard {} is initialized", shardId);
-
- this.actorInitialized = true;
-
- notifyOnShardInitializedCallbacks();
- }
-
- private void notifyOnShardInitializedCallbacks() {
- if(onShardInitializedSet.isEmpty()) {
- return;
- }
-
- boolean ready = isShardReadyWithLeaderId();
-
- if(LOG.isDebugEnabled()) {
- LOG.debug("Shard {} is {} - notifying {} OnShardInitialized callbacks", shardId,
- ready ? "ready" : "initialized", onShardInitializedSet.size());
- }
-
- Iterator<OnShardInitialized> iter = onShardInitializedSet.iterator();
- while(iter.hasNext()) {
- OnShardInitialized onShardInitialized = iter.next();
- if(!(onShardInitialized instanceof OnShardReady) || ready) {
- iter.remove();
- onShardInitialized.getTimeoutSchedule().cancel();
- onShardInitialized.getReplyRunnable().run();
- }
- }
- }
-
- void addOnShardInitialized(OnShardInitialized onShardInitialized) {
- onShardInitializedSet.add(onShardInitialized);
- }
-
- void removeOnShardInitialized(OnShardInitialized onShardInitialized) {
- onShardInitializedSet.remove(onShardInitialized);
- }
-
- void setRole(String newRole) {
- this.role = newRole;
-
- notifyOnShardInitializedCallbacks();
- }
-
- void setFollowerSyncStatus(boolean syncStatus){
- this.followerSyncStatus = syncStatus;
- }
-
- boolean isInSync(){
- if(RaftState.Follower.name().equals(this.role)){
- return followerSyncStatus;
- } else if(RaftState.Leader.name().equals(this.role)){
- return true;
- }
-
- return false;
- }
-
- boolean setLeaderId(String leaderId) {
- boolean changed = !Objects.equal(this.leaderId, leaderId);
- this.leaderId = leaderId;
- if(leaderId != null) {
- this.leaderAvailable = true;
- }
- notifyOnShardInitializedCallbacks();
-
- return changed;
- }
-
- String getLeaderId() {
- return leaderId;
- }
-
- void setLeaderAvailable(boolean leaderAvailable) {
- this.leaderAvailable = leaderAvailable;
-
- if(leaderAvailable) {
- notifyOnShardInitializedCallbacks();
- }
- }
-
- short getLeaderVersion() {
- return leaderVersion;
- }
-
- void setLeaderVersion(short leaderVersion) {
- this.leaderVersion = leaderVersion;
- }
-
- boolean isActiveMember() {
- return isActiveMember;
- }
-
- void setActiveMember(boolean isActiveMember) {
- this.isActiveMember = isActiveMember;
- }
- }
-
- private static class OnShardInitialized {
- private final Runnable replyRunnable;
- private Cancellable timeoutSchedule;
-
- OnShardInitialized(Runnable replyRunnable) {
- this.replyRunnable = replyRunnable;
- }
-
- Runnable getReplyRunnable() {
- return replyRunnable;
- }
-
- Cancellable getTimeoutSchedule() {
- return timeoutSchedule;
- }
-
- void setTimeoutSchedule(Cancellable timeoutSchedule) {
- this.timeoutSchedule = timeoutSchedule;
- }
- }
-
- private static class OnShardReady extends OnShardInitialized {
- OnShardReady(Runnable replyRunnable) {
- super(replyRunnable);
- }
- }
-
- private static class ShardNotInitializedTimeout {
- private final ActorRef sender;
- private final ShardInformation shardInfo;
- private final OnShardInitialized onShardInitialized;
-
- ShardNotInitializedTimeout(ShardInformation shardInfo, OnShardInitialized onShardInitialized, ActorRef sender) {
- this.sender = sender;
- this.shardInfo = shardInfo;
- this.onShardInitialized = onShardInitialized;
- }
-
- ActorRef getSender() {
- return sender;
- }
-
- ShardInformation getShardInfo() {
- return shardInfo;
- }
-
- OnShardInitialized getOnShardInitialized() {
- return onShardInitialized;
- }
- }
+import java.io.Serializable;
+import java.util.Set;
+/**
+ * @deprecated This is a deprecated placeholder to keep its inner class present. It serves no other purpose.
+ */
+@Deprecated
+public final class ShardManager {
/**
* We no longer persist SchemaContextModules but keep this class around for now for backwards
* compatibility so we don't get de-serialization failures on upgrade from Helium.
*/
@Deprecated
- static class SchemaContextModules implements Serializable {
+ public static class SchemaContextModules implements Serializable {
private static final long serialVersionUID = -8884620101025936590L;
private final Set<String> modules;
- SchemaContextModules(Set<String> modules){
+ public SchemaContextModules(Set<String> modules){
this.modules = modules;
}
}
}
- public static Builder builder() {
- return new Builder();
- }
-
- public static abstract class AbstractBuilder<T extends AbstractBuilder<T>> {
- private ClusterWrapper cluster;
- private Configuration configuration;
- private DatastoreContextFactory datastoreContextFactory;
- private CountDownLatch waitTillReadyCountdownLatch;
- private PrimaryShardInfoFutureCache primaryShardInfoCache;
- private DatastoreSnapshot restoreFromSnapshot;
- private volatile boolean sealed;
-
- @SuppressWarnings("unchecked")
- private T self() {
- return (T) this;
- }
-
- protected void checkSealed() {
- Preconditions.checkState(!sealed, "Builder is already sealed - further modifications are not allowed");
- }
-
- public T cluster(ClusterWrapper cluster) {
- checkSealed();
- this.cluster = cluster;
- return self();
- }
-
- public T configuration(Configuration configuration) {
- checkSealed();
- this.configuration = configuration;
- return self();
- }
-
- public T datastoreContextFactory(DatastoreContextFactory datastoreContextFactory) {
- checkSealed();
- this.datastoreContextFactory = datastoreContextFactory;
- return self();
- }
-
- public T waitTillReadyCountdownLatch(CountDownLatch waitTillReadyCountdownLatch) {
- checkSealed();
- this.waitTillReadyCountdownLatch = waitTillReadyCountdownLatch;
- return self();
- }
-
- public T primaryShardInfoCache(PrimaryShardInfoFutureCache primaryShardInfoCache) {
- checkSealed();
- this.primaryShardInfoCache = primaryShardInfoCache;
- return self();
- }
-
- public T restoreFromSnapshot(DatastoreSnapshot restoreFromSnapshot) {
- checkSealed();
- this.restoreFromSnapshot = restoreFromSnapshot;
- return self();
- }
-
- protected void verify() {
- sealed = true;
- Preconditions.checkNotNull(cluster, "cluster should not be null");
- Preconditions.checkNotNull(configuration, "configuration should not be null");
- Preconditions.checkNotNull(datastoreContextFactory, "datastoreContextFactory should not be null");
- Preconditions.checkNotNull(waitTillReadyCountdownLatch, "waitTillReadyCountdownLatch should not be null");
- Preconditions.checkNotNull(primaryShardInfoCache, "primaryShardInfoCache should not be null");
- }
-
- public Props props() {
- verify();
- return Props.create(ShardManager.class, this);
- }
- }
-
- public static class Builder extends AbstractBuilder<Builder> {
- }
-
- private void findPrimary(final String shardName, final FindPrimaryResponseHandler handler) {
- Timeout findPrimaryTimeout = new Timeout(datastoreContextFactory.getBaseDatastoreContext().
- getShardInitializationTimeout().duration().$times(2));
-
-
- Future<Object> futureObj = ask(getSelf(), new FindPrimary(shardName, true), findPrimaryTimeout);
- futureObj.onComplete(new OnComplete<Object>() {
- @Override
- public void onComplete(Throwable failure, Object response) {
- if (failure != null) {
- handler.onFailure(failure);
- } else {
- if(response instanceof RemotePrimaryShardFound) {
- handler.onRemotePrimaryShardFound((RemotePrimaryShardFound) response);
- } else if(response instanceof LocalPrimaryShardFound) {
- handler.onLocalPrimaryFound((LocalPrimaryShardFound) response);
- } else {
- handler.onUnknownResponse(response);
- }
- }
- }
- }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
- }
-
- /**
- * The FindPrimaryResponseHandler provides specific callback methods which are invoked when a response to the
- * a remote or local find primary message is processed
- */
- private static interface FindPrimaryResponseHandler {
- /**
- * Invoked when a Failure message is received as a response
- *
- * @param failure
- */
- void onFailure(Throwable failure);
-
- /**
- * Invoked when a RemotePrimaryShardFound response is received
- *
- * @param response
- */
- void onRemotePrimaryShardFound(RemotePrimaryShardFound response);
-
- /**
- * Invoked when a LocalPrimaryShardFound response is received
- * @param response
- */
- void onLocalPrimaryFound(LocalPrimaryShardFound response);
-
- /**
- * Invoked when an unknown response is received. This is another type of failure.
- *
- * @param response
- */
- void onUnknownResponse(Object response);
- }
-
- /**
- * The AutoFindPrimaryFailureResponseHandler automatically processes Failure responses when finding a primary
- * replica and sends a wrapped Failure response to some targetActor
- */
- private static abstract class AutoFindPrimaryFailureResponseHandler implements FindPrimaryResponseHandler {
- private final ActorRef targetActor;
- private final String shardName;
- private final String persistenceId;
- private final ActorRef shardManagerActor;
-
- /**
- * @param targetActor The actor to whom the Failure response should be sent when a FindPrimary failure occurs
- * @param shardName The name of the shard for which the primary replica had to be found
- * @param persistenceId The persistenceId for the ShardManager
- * @param shardManagerActor The ShardManager actor which triggered the call to FindPrimary
- */
- protected AutoFindPrimaryFailureResponseHandler(ActorRef targetActor, String shardName, String persistenceId, ActorRef shardManagerActor){
- this.targetActor = Preconditions.checkNotNull(targetActor);
- this.shardName = Preconditions.checkNotNull(shardName);
- this.persistenceId = Preconditions.checkNotNull(persistenceId);
- this.shardManagerActor = Preconditions.checkNotNull(shardManagerActor);
- }
-
- public ActorRef getTargetActor() {
- return targetActor;
- }
-
- public String getShardName() {
- return shardName;
- }
-
- @Override
- public void onFailure(Throwable failure) {
- LOG.debug ("{}: Received failure from FindPrimary for shard {}", persistenceId, shardName, failure);
- targetActor.tell(new akka.actor.Status.Failure(new RuntimeException(
- String.format("Failed to find leader for shard %s", shardName), failure)), shardManagerActor);
- }
-
- @Override
- public void onUnknownResponse(Object response) {
- String msg = String.format("Failed to find leader for shard %s: received response: %s",
- shardName, response);
- LOG.debug ("{}: {}", persistenceId, msg);
- targetActor.tell(new akka.actor.Status.Failure(response instanceof Throwable ? (Throwable) response :
- new RuntimeException(msg)), shardManagerActor);
- }
- }
-
-
- /**
- * The PrimaryShardFoundForContext is a DTO which puts together a message (aka 'Context' message) which needs to be
- * forwarded to the primary replica of a shard and the message (aka 'PrimaryShardFound' message) that is received
- * as a successful response to find primary.
- */
- private static class PrimaryShardFoundForContext {
- private final String shardName;
- private final Object contextMessage;
- private final RemotePrimaryShardFound remotePrimaryShardFound;
- private final LocalPrimaryShardFound localPrimaryShardFound;
-
- public PrimaryShardFoundForContext(@Nonnull String shardName, @Nonnull Object contextMessage,
- @Nonnull Object primaryFoundMessage) {
- this.shardName = Preconditions.checkNotNull(shardName);
- this.contextMessage = Preconditions.checkNotNull(contextMessage);
- Preconditions.checkNotNull(primaryFoundMessage);
- this.remotePrimaryShardFound = (primaryFoundMessage instanceof RemotePrimaryShardFound) ?
- (RemotePrimaryShardFound) primaryFoundMessage : null;
- this.localPrimaryShardFound = (primaryFoundMessage instanceof LocalPrimaryShardFound) ?
- (LocalPrimaryShardFound) primaryFoundMessage : null;
- }
-
- @Nonnull
- String getPrimaryPath(){
- if(remotePrimaryShardFound != null) {
- return remotePrimaryShardFound.getPrimaryPath();
- }
- return localPrimaryShardFound.getPrimaryPath();
- }
-
- @Nonnull
- Object getContextMessage() {
- return contextMessage;
- }
-
- @Nullable
- RemotePrimaryShardFound getRemotePrimaryShardFound() {
- return remotePrimaryShardFound;
- }
-
- @Nonnull
- String getShardName() {
- return shardName;
- }
- }
-
- /**
- * The WrappedShardResponse class wraps a response from a Shard.
- */
- private static class WrappedShardResponse {
- private final ShardIdentifier shardId;
- private final Object response;
- private final String leaderPath;
-
- private WrappedShardResponse(ShardIdentifier shardId, Object response, String leaderPath) {
- this.shardId = shardId;
- this.response = response;
- this.leaderPath = leaderPath;
- }
-
- ShardIdentifier getShardId() {
- return shardId;
- }
-
- Object getResponse() {
- return response;
- }
-
- String getLeaderPath() {
- return leaderPath;
- }
+ private ShardManager() {
+ throw new UnsupportedOperationException("deprecated outer class");
}
}
-
-
-
package org.opendaylight.controller.cluster.datastore.messages;
/**
- * FindLocalShard is a message that should be sent to the {@link org.opendaylight.controller.cluster.datastore.ShardManager}
+ * FindLocalShard is a message that should be sent to the {@link org.opendaylight.controller.cluster.datastore.shardmanager.ShardManager}
* when we need to find a reference to a LocalShard
*/
public class FindLocalShard {
import akka.actor.ActorRef;
/**
- * LocalShardFound is a message that is sent by the {@link org.opendaylight.controller.cluster.datastore.ShardManager}
+ * LocalShardFound is a message that is sent by the {@link org.opendaylight.controller.cluster.datastore.shardmanager.ShardManager}
* when it finds a shard with the specified name in it's local shard registry
*/
public class LocalShardFound {
package org.opendaylight.controller.cluster.datastore.messages;
/**
- * LocalShardNotFound is a message that is sent by the {@link org.opendaylight.controller.cluster.datastore.ShardManager}
+ * LocalShardNotFound is a message that is sent by the {@link org.opendaylight.controller.cluster.datastore.shardmanager.ShardManager}
* when it cannot locate a shard in it's local registry with the shardName specified
*/
public class LocalShardNotFound {
--- /dev/null
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.cluster.datastore.shardmanager;
+
+import static akka.pattern.Patterns.ask;
+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.Status;
+import akka.actor.SupervisorStrategy;
+import akka.cluster.ClusterEvent;
+import akka.dispatch.Futures;
+import akka.dispatch.OnComplete;
+import akka.japi.Function;
+import akka.pattern.Patterns;
+import akka.persistence.RecoveryCompleted;
+import akka.persistence.SaveSnapshotFailure;
+import akka.persistence.SaveSnapshotSuccess;
+import akka.persistence.SnapshotOffer;
+import akka.persistence.SnapshotSelectionCriteria;
+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 com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import com.google.common.base.Supplier;
+import com.google.common.collect.Sets;
+import java.io.ByteArrayInputStream;
+import java.io.ObjectInputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.apache.commons.lang3.SerializationUtils;
+import org.opendaylight.controller.cluster.common.actor.AbstractUntypedPersistentActorWithMetering;
+import org.opendaylight.controller.cluster.datastore.ClusterWrapper;
+import org.opendaylight.controller.cluster.datastore.DatastoreContext;
+import org.opendaylight.controller.cluster.datastore.DatastoreContextFactory;
+import org.opendaylight.controller.cluster.datastore.Shard;
+import org.opendaylight.controller.cluster.datastore.ShardManagerSnapshot;
+import org.opendaylight.controller.cluster.datastore.config.Configuration;
+import org.opendaylight.controller.cluster.datastore.config.ModuleShardConfiguration;
+import org.opendaylight.controller.cluster.datastore.exceptions.AlreadyExistsException;
+import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
+import org.opendaylight.controller.cluster.datastore.exceptions.NotInitializedException;
+import org.opendaylight.controller.cluster.datastore.exceptions.PrimaryNotFoundException;
+import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
+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.DatastoreSnapshot;
+import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard;
+import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
+import org.opendaylight.controller.cluster.datastore.messages.LocalPrimaryShardFound;
+import org.opendaylight.controller.cluster.datastore.messages.LocalShardFound;
+import org.opendaylight.controller.cluster.datastore.messages.LocalShardNotFound;
+import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolved;
+import org.opendaylight.controller.cluster.datastore.messages.PeerDown;
+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.utils.Dispatchers;
+import org.opendaylight.controller.cluster.datastore.utils.PrimaryShardInfoFutureCache;
+import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListener;
+import org.opendaylight.controller.cluster.notifications.RoleChangeNotification;
+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.client.messages.GetSnapshot;
+import org.opendaylight.controller.cluster.raft.client.messages.Shutdown;
+import org.opendaylight.controller.cluster.raft.messages.AddServer;
+import org.opendaylight.controller.cluster.raft.messages.AddServerReply;
+import org.opendaylight.controller.cluster.raft.messages.RemoveServer;
+import org.opendaylight.controller.cluster.raft.messages.RemoveServerReply;
+import org.opendaylight.controller.cluster.raft.messages.ServerChangeStatus;
+import org.opendaylight.controller.cluster.raft.messages.ServerRemoved;
+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.ExecutionContext;
+import scala.concurrent.Future;
+import scala.concurrent.duration.Duration;
+import scala.concurrent.duration.FiniteDuration;
+
+/**
+ * The ShardManager has the following jobs,
+ * <ul>
+ * <li> Create all the local shard replicas that belong on this cluster member
+ * <li> Find the address of the local shard
+ * <li> Find the primary replica for any given shard
+ * <li> Monitor the cluster members and store their addresses
+ * <ul>
+ */
+public class ShardManager extends AbstractUntypedPersistentActorWithMetering {
+
+ private static final Logger LOG = LoggerFactory.getLogger(ShardManager.class);
+
+ // Stores a mapping between a shard name and it's corresponding information
+ // Shard names look like inventory, topology etc and are as specified in
+ // configuration
+ private final Map<String, ShardInformation> localShards = new HashMap<>();
+
+ // The type of a ShardManager reflects the type of the datastore itself
+ // A data store could be of type config/operational
+ private final String type;
+
+ private final ClusterWrapper cluster;
+
+ private final Configuration configuration;
+
+ private final String shardDispatcherPath;
+
+ private final ShardManagerInfo mBean;
+
+ private DatastoreContextFactory datastoreContextFactory;
+
+ private final CountDownLatch waitTillReadyCountdownLatch;
+
+ private final PrimaryShardInfoFutureCache primaryShardInfoCache;
+
+ private final ShardPeerAddressResolver peerAddressResolver;
+
+ private SchemaContext schemaContext;
+
+ private DatastoreSnapshot restoreFromSnapshot;
+
+ private ShardManagerSnapshot currentSnapshot;
+
+ private final Set<String> shardReplicaOperationsInProgress = new HashSet<>();
+
+ private final String persistenceId;
+
+ /**
+ */
+ protected ShardManager(AbstractBuilder<?> builder) {
+
+ this.cluster = builder.cluster;
+ this.configuration = builder.configuration;
+ this.datastoreContextFactory = builder.datastoreContextFactory;
+ this.type = builder.datastoreContextFactory.getBaseDatastoreContext().getDataStoreName();
+ this.shardDispatcherPath =
+ new Dispatchers(context().system().dispatchers()).getDispatcherPath(Dispatchers.DispatcherType.Shard);
+ this.waitTillReadyCountdownLatch = builder.waitTillReadyCountdownLatch;
+ this.primaryShardInfoCache = builder.primaryShardInfoCache;
+ this.restoreFromSnapshot = builder.restoreFromSnapshot;
+
+ String possiblePersistenceId = datastoreContextFactory.getBaseDatastoreContext().getShardManagerPersistenceId();
+ persistenceId = possiblePersistenceId != null ? possiblePersistenceId : "shard-manager-" + type;
+
+ peerAddressResolver = new ShardPeerAddressResolver(type, cluster.getCurrentMemberName());
+
+ // Subscribe this actor to cluster member events
+ cluster.subscribeToMemberEvents(getSelf());
+
+ List<String> localShardActorNames = new ArrayList<>();
+ mBean = ShardManagerInfo.createShardManagerMBean(cluster.getCurrentMemberName(),
+ "shard-manager-" + this.type,
+ datastoreContextFactory.getBaseDatastoreContext().getDataStoreMXBeanType(),
+ localShardActorNames);
+ mBean.setShardManager(this);
+ }
+
+ @Override
+ public void postStop() {
+ LOG.info("Stopping ShardManager {}", persistenceId());
+
+ mBean.unregisterMBean();
+ }
+
+ @Override
+ public void handleCommand(Object message) throws Exception {
+ if (message instanceof FindPrimary) {
+ findPrimary((FindPrimary)message);
+ } else if(message instanceof FindLocalShard){
+ findLocalShard((FindLocalShard) message);
+ } else if (message instanceof UpdateSchemaContext) {
+ updateSchemaContext(message);
+ } else if(message instanceof ActorInitialized) {
+ onActorInitialized(message);
+ } else if (message instanceof ClusterEvent.MemberUp){
+ memberUp((ClusterEvent.MemberUp) message);
+ } else if (message instanceof ClusterEvent.MemberExited){
+ memberExited((ClusterEvent.MemberExited) message);
+ } else if(message instanceof ClusterEvent.MemberRemoved) {
+ memberRemoved((ClusterEvent.MemberRemoved) message);
+ } else if(message instanceof ClusterEvent.UnreachableMember) {
+ memberUnreachable((ClusterEvent.UnreachableMember)message);
+ } else if(message instanceof ClusterEvent.ReachableMember) {
+ memberReachable((ClusterEvent.ReachableMember) message);
+ } else if(message instanceof DatastoreContextFactory) {
+ onDatastoreContextFactory((DatastoreContextFactory)message);
+ } else if(message instanceof RoleChangeNotification) {
+ onRoleChangeNotification((RoleChangeNotification) message);
+ } else if(message instanceof FollowerInitialSyncUpStatus){
+ onFollowerInitialSyncStatus((FollowerInitialSyncUpStatus) message);
+ } else if(message instanceof ShardNotInitializedTimeout) {
+ onShardNotInitializedTimeout((ShardNotInitializedTimeout)message);
+ } else if(message instanceof ShardLeaderStateChanged) {
+ onLeaderStateChanged((ShardLeaderStateChanged) message);
+ } else if(message instanceof SwitchShardBehavior){
+ onSwitchShardBehavior((SwitchShardBehavior) message);
+ } else if(message instanceof CreateShard) {
+ onCreateShard((CreateShard)message);
+ } else if(message instanceof AddShardReplica){
+ onAddShardReplica((AddShardReplica)message);
+ } else if(message instanceof ForwardedAddServerReply) {
+ ForwardedAddServerReply msg = (ForwardedAddServerReply)message;
+ onAddServerReply(msg.shardInfo, msg.addServerReply, getSender(), msg.leaderPath,
+ msg.removeShardOnFailure);
+ } else if(message instanceof ForwardedAddServerFailure) {
+ ForwardedAddServerFailure msg = (ForwardedAddServerFailure)message;
+ onAddServerFailure(msg.shardName, msg.failureMessage, msg.failure, getSender(), msg.removeShardOnFailure);
+ } else if(message instanceof PrimaryShardFoundForContext) {
+ PrimaryShardFoundForContext primaryShardFoundContext = (PrimaryShardFoundForContext)message;
+ onPrimaryShardFoundContext(primaryShardFoundContext);
+ } else if(message instanceof RemoveShardReplica) {
+ onRemoveShardReplica((RemoveShardReplica) message);
+ } else if(message instanceof WrappedShardResponse){
+ onWrappedShardResponse((WrappedShardResponse) message);
+ } else if(message instanceof GetSnapshot) {
+ onGetSnapshot();
+ } else if(message instanceof ServerRemoved){
+ onShardReplicaRemoved((ServerRemoved) message);
+ } else if(message instanceof SaveSnapshotSuccess) {
+ onSaveSnapshotSuccess((SaveSnapshotSuccess)message);
+ } else if(message instanceof SaveSnapshotFailure) {
+ LOG.error("{}: SaveSnapshotFailure received for saving snapshot of shards",
+ persistenceId(), ((SaveSnapshotFailure) message).cause());
+ } else if(message instanceof Shutdown) {
+ onShutDown();
+ } else {
+ unknownMessage(message);
+ }
+ }
+
+ private void onShutDown() {
+ List<Future<Boolean>> stopFutures = new ArrayList<>(localShards.size());
+ for (ShardInformation info : localShards.values()) {
+ if (info.getActor() != null) {
+ LOG.debug("{}: Issuing gracefulStop to shard {}", persistenceId(), info.getShardId());
+
+ FiniteDuration duration = info.getDatastoreContext().getShardRaftConfig().getElectionTimeOutInterval().$times(2);
+ stopFutures.add(Patterns.gracefulStop(info.getActor(), duration, Shutdown.INSTANCE));
+ }
+ }
+
+ LOG.info("Shutting down ShardManager {} - waiting on {} shards", persistenceId(), stopFutures.size());
+
+ ExecutionContext dispatcher = new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client);
+ Future<Iterable<Boolean>> combinedFutures = Futures.sequence(stopFutures, dispatcher);
+
+ combinedFutures.onComplete(new OnComplete<Iterable<Boolean>>() {
+ @Override
+ public void onComplete(Throwable failure, Iterable<Boolean> results) {
+ LOG.debug("{}: All shards shutdown - sending PoisonPill to self", persistenceId());
+
+ self().tell(PoisonPill.getInstance(), self());
+
+ if(failure != null) {
+ LOG.warn("{}: An error occurred attempting to shut down the shards", persistenceId(), failure);
+ } else {
+ int nfailed = 0;
+ for(Boolean r: results) {
+ if(!r) {
+ nfailed++;
+ }
+ }
+
+ if(nfailed > 0) {
+ LOG.warn("{}: {} shards did not shut down gracefully", persistenceId(), nfailed);
+ }
+ }
+ }
+ }, dispatcher);
+ }
+
+ private void onWrappedShardResponse(WrappedShardResponse message) {
+ if (message.getResponse() instanceof RemoveServerReply) {
+ onRemoveServerReply(getSender(), message.getShardId(), (RemoveServerReply) message.getResponse(),
+ message.getLeaderPath());
+ }
+ }
+
+ private void onRemoveServerReply(ActorRef originalSender, ShardIdentifier shardId, RemoveServerReply replyMsg,
+ String leaderPath) {
+ shardReplicaOperationsInProgress.remove(shardId);
+
+ LOG.debug ("{}: Received {} for shard {}", persistenceId(), replyMsg, shardId.getShardName());
+
+ if (replyMsg.getStatus() == ServerChangeStatus.OK) {
+ LOG.debug ("{}: Leader shard successfully removed the replica shard {}", persistenceId(),
+ shardId.getShardName());
+ originalSender.tell(new akka.actor.Status.Success(null), getSelf());
+ } else {
+ LOG.warn ("{}: Leader failed to remove shard replica {} with status {}",
+ persistenceId(), shardId, replyMsg.getStatus());
+
+ Exception failure = getServerChangeException(RemoveServer.class, replyMsg.getStatus(),
+ leaderPath, shardId);
+ originalSender.tell(new akka.actor.Status.Failure(failure), getSelf());
+ }
+ }
+
+ private void onPrimaryShardFoundContext(PrimaryShardFoundForContext primaryShardFoundContext) {
+ if(primaryShardFoundContext.getContextMessage() instanceof AddShardReplica) {
+ addShard(primaryShardFoundContext.getShardName(), primaryShardFoundContext.getRemotePrimaryShardFound(),
+ getSender());
+ } else if(primaryShardFoundContext.getContextMessage() instanceof RemoveShardReplica){
+ removeShardReplica((RemoveShardReplica) primaryShardFoundContext.getContextMessage(),
+ primaryShardFoundContext.getShardName(), primaryShardFoundContext.getPrimaryPath(), getSender());
+ }
+ }
+
+ private void removeShardReplica(RemoveShardReplica contextMessage, final String shardName, final String primaryPath,
+ final ActorRef sender) {
+ if(isShardReplicaOperationInProgress(shardName, sender)) {
+ return;
+ }
+
+ shardReplicaOperationsInProgress.add(shardName);
+
+ final ShardIdentifier shardId = getShardIdentifier(contextMessage.getMemberName(), shardName);
+
+ final DatastoreContext datastoreContext = newShardDatastoreContextBuilder(shardName).build();
+
+ //inform ShardLeader to remove this shard as a replica by sending an RemoveServer message
+ LOG.debug ("{}: Sending RemoveServer message to peer {} for shard {}", persistenceId(),
+ primaryPath, shardId);
+
+ Timeout removeServerTimeout = new Timeout(datastoreContext.getShardLeaderElectionTimeout().
+ duration());
+ Future<Object> futureObj = ask(getContext().actorSelection(primaryPath),
+ new RemoveServer(shardId.toString()), removeServerTimeout);
+
+ futureObj.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object response) {
+ if (failure != null) {
+ String msg = String.format("RemoveServer request to leader %s for shard %s failed",
+ primaryPath, shardName);
+
+ LOG.debug ("{}: {}", persistenceId(), msg, failure);
+
+ // FAILURE
+ sender.tell(new Status.Failure(new RuntimeException(msg, failure)), self());
+ } else {
+ // SUCCESS
+ self().tell(new WrappedShardResponse(shardId, response, primaryPath), sender);
+ }
+ }
+ }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
+ }
+
+ private void onShardReplicaRemoved(ServerRemoved message) {
+ final ShardIdentifier shardId = new ShardIdentifier.Builder().fromShardIdString(message.getServerId()).build();
+ final ShardInformation shardInformation = localShards.remove(shardId.getShardName());
+ if(shardInformation == null) {
+ LOG.debug("{} : Shard replica {} is not present in list", persistenceId(), shardId.toString());
+ return;
+ } else if(shardInformation.getActor() != null) {
+ LOG.debug("{} : Sending Shutdown to Shard actor {}", persistenceId(), shardInformation.getActor());
+ shardInformation.getActor().tell(Shutdown.INSTANCE, self());
+ }
+ LOG.debug("{} : Local Shard replica for shard {} has been removed", persistenceId(), shardId.getShardName());
+ persistShardList();
+ }
+
+ private void onGetSnapshot() {
+ LOG.debug("{}: onGetSnapshot", persistenceId());
+
+ List<String> notInitialized = null;
+ for(ShardInformation shardInfo: localShards.values()) {
+ if(!shardInfo.isShardInitialized()) {
+ if(notInitialized == null) {
+ notInitialized = new ArrayList<>();
+ }
+
+ notInitialized.add(shardInfo.getShardName());
+ }
+ }
+
+ if(notInitialized != null) {
+ getSender().tell(new akka.actor.Status.Failure(new IllegalStateException(String.format(
+ "%d shard(s) %s are not initialized", notInitialized.size(), notInitialized))), getSelf());
+ return;
+ }
+
+ byte[] shardManagerSnapshot = null;
+ if(currentSnapshot != null) {
+ shardManagerSnapshot = SerializationUtils.serialize(currentSnapshot);
+ }
+
+ ActorRef replyActor = getContext().actorOf(ShardManagerGetSnapshotReplyActor.props(
+ new ArrayList<>(localShards.keySet()), type, shardManagerSnapshot , getSender(), persistenceId(),
+ datastoreContextFactory.getBaseDatastoreContext().getShardInitializationTimeout().duration()));
+
+ for(ShardInformation shardInfo: localShards.values()) {
+ shardInfo.getActor().tell(GetSnapshot.INSTANCE, replyActor);
+ }
+ }
+
+ private void onCreateShard(CreateShard createShard) {
+ LOG.debug("{}: onCreateShard: {}", persistenceId(), createShard);
+
+ Object reply;
+ try {
+ String shardName = createShard.getModuleShardConfig().getShardName();
+ if(localShards.containsKey(shardName)) {
+ LOG.debug("{}: Shard {} already exists", persistenceId(), shardName);
+ reply = new akka.actor.Status.Success(String.format("Shard with name %s already exists", shardName));
+ } else {
+ doCreateShard(createShard);
+ reply = new akka.actor.Status.Success(null);
+ }
+ } catch (Exception e) {
+ LOG.error("{}: onCreateShard failed", persistenceId(), e);
+ reply = new akka.actor.Status.Failure(e);
+ }
+
+ if(getSender() != null && !getContext().system().deadLetters().equals(getSender())) {
+ getSender().tell(reply, getSelf());
+ }
+ }
+
+ private void doCreateShard(CreateShard createShard) {
+ ModuleShardConfiguration moduleShardConfig = createShard.getModuleShardConfig();
+ String shardName = moduleShardConfig.getShardName();
+
+ configuration.addModuleShardConfiguration(moduleShardConfig);
+
+ DatastoreContext shardDatastoreContext = createShard.getDatastoreContext();
+ if(shardDatastoreContext == null) {
+ shardDatastoreContext = newShardDatastoreContext(shardName);
+ } else {
+ shardDatastoreContext = DatastoreContext.newBuilderFrom(shardDatastoreContext).shardPeerAddressResolver(
+ peerAddressResolver).build();
+ }
+
+ ShardIdentifier shardId = getShardIdentifier(cluster.getCurrentMemberName(), shardName);
+
+ boolean shardWasInRecoveredSnapshot = currentSnapshot != null &&
+ currentSnapshot.getShardList().contains(shardName);
+
+ Map<String, String> peerAddresses;
+ boolean isActiveMember;
+ if(shardWasInRecoveredSnapshot || configuration.getMembersFromShardName(shardName).
+ contains(cluster.getCurrentMemberName())) {
+ peerAddresses = getPeerAddresses(shardName);
+ isActiveMember = true;
+ } else {
+ // The local member is not in the static shard member configuration and the shard did not
+ // previously exist (ie !shardWasInRecoveredSnapshot). In this case we'll create
+ // the shard with no peers and with elections disabled so it stays as follower. A
+ // subsequent AddServer request will be needed to make it an active member.
+ isActiveMember = false;
+ peerAddresses = Collections.emptyMap();
+ shardDatastoreContext = DatastoreContext.newBuilderFrom(shardDatastoreContext).
+ customRaftPolicyImplementation(DisableElectionsRaftPolicy.class.getName()).build();
+ }
+
+ LOG.debug("{} doCreateShard: shardId: {}, memberNames: {}, peerAddresses: {}, isActiveMember: {}",
+ persistenceId(), shardId, moduleShardConfig.getShardMemberNames(), peerAddresses,
+ isActiveMember);
+
+ ShardInformation info = new ShardInformation(shardName, shardId, peerAddresses,
+ shardDatastoreContext, createShard.getShardBuilder(), peerAddressResolver);
+ info.setActiveMember(isActiveMember);
+ localShards.put(info.getShardName(), info);
+
+ mBean.addLocalShard(shardId.toString());
+
+ if(schemaContext != null) {
+ info.setActor(newShardActor(schemaContext, info));
+ }
+ }
+
+ private DatastoreContext.Builder newShardDatastoreContextBuilder(String shardName) {
+ return DatastoreContext.newBuilderFrom(datastoreContextFactory.getShardDatastoreContext(shardName)).
+ shardPeerAddressResolver(peerAddressResolver);
+ }
+
+ private DatastoreContext newShardDatastoreContext(String shardName) {
+ return newShardDatastoreContextBuilder(shardName).build();
+ }
+
+ private void checkReady(){
+ if (isReadyWithLeaderId()) {
+ LOG.info("{}: All Shards are ready - data store {} is ready, available count is {}",
+ persistenceId(), type, waitTillReadyCountdownLatch.getCount());
+
+ waitTillReadyCountdownLatch.countDown();
+ }
+ }
+
+ private void onLeaderStateChanged(ShardLeaderStateChanged leaderStateChanged) {
+ LOG.info("{}: Received LeaderStateChanged message: {}", persistenceId(), leaderStateChanged);
+
+ ShardInformation shardInformation = findShardInformation(leaderStateChanged.getMemberId());
+ if(shardInformation != null) {
+ shardInformation.setLocalDataTree(leaderStateChanged.getLocalShardDataTree());
+ shardInformation.setLeaderVersion(leaderStateChanged.getLeaderPayloadVersion());
+ if(shardInformation.setLeaderId(leaderStateChanged.getLeaderId())) {
+ primaryShardInfoCache.remove(shardInformation.getShardName());
+ }
+
+ checkReady();
+ } else {
+ LOG.debug("No shard found with member Id {}", leaderStateChanged.getMemberId());
+ }
+ }
+
+ private void onShardNotInitializedTimeout(ShardNotInitializedTimeout message) {
+ ShardInformation shardInfo = message.getShardInfo();
+
+ LOG.debug("{}: Received ShardNotInitializedTimeout message for shard {}", persistenceId(),
+ shardInfo.getShardName());
+
+ shardInfo.removeOnShardInitialized(message.getOnShardInitialized());
+
+ if(!shardInfo.isShardInitialized()) {
+ LOG.debug("{}: Returning NotInitializedException for shard {}", persistenceId(), shardInfo.getShardName());
+ message.getSender().tell(createNotInitializedException(shardInfo.shardId), getSelf());
+ } else {
+ LOG.debug("{}: Returning NoShardLeaderException for shard {}", persistenceId(), shardInfo.getShardName());
+ message.getSender().tell(createNoShardLeaderException(shardInfo.shardId), getSelf());
+ }
+ }
+
+ private void onFollowerInitialSyncStatus(FollowerInitialSyncUpStatus status) {
+ LOG.info("{} Received follower initial sync status for {} status sync done {}", persistenceId(),
+ status.getName(), status.isInitialSyncDone());
+
+ ShardInformation shardInformation = findShardInformation(status.getName());
+
+ if(shardInformation != null) {
+ shardInformation.setFollowerSyncStatus(status.isInitialSyncDone());
+
+ mBean.setSyncStatus(isInSync());
+ }
+
+ }
+
+ private void onRoleChangeNotification(RoleChangeNotification roleChanged) {
+ LOG.info("{}: Received role changed for {} from {} to {}", persistenceId(), roleChanged.getMemberId(),
+ roleChanged.getOldRole(), roleChanged.getNewRole());
+
+ ShardInformation shardInformation = findShardInformation(roleChanged.getMemberId());
+ if(shardInformation != null) {
+ shardInformation.setRole(roleChanged.getNewRole());
+ checkReady();
+ mBean.setSyncStatus(isInSync());
+ }
+ }
+
+
+ private ShardInformation findShardInformation(String memberId) {
+ for(ShardInformation info : localShards.values()){
+ if(info.getShardId().toString().equals(memberId)){
+ return info;
+ }
+ }
+
+ return null;
+ }
+
+ private boolean isReadyWithLeaderId() {
+ boolean isReady = true;
+ for (ShardInformation info : localShards.values()) {
+ if(!info.isShardReadyWithLeaderId()){
+ isReady = false;
+ break;
+ }
+ }
+ return isReady;
+ }
+
+ private boolean isInSync(){
+ for (ShardInformation info : localShards.values()) {
+ if(!info.isInSync()){
+ return false;
+ }
+ }
+ return true;
+ }
+
+ private void onActorInitialized(Object message) {
+ final ActorRef sender = getSender();
+
+ if (sender == null) {
+ return; //why is a non-actor sending this message? Just ignore.
+ }
+
+ String actorName = sender.path().name();
+ //find shard name from actor name; actor name is stringified shardId
+ ShardIdentifier shardId = ShardIdentifier.builder().fromShardIdString(actorName).build();
+
+ if (shardId.getShardName() == null) {
+ return;
+ }
+
+ markShardAsInitialized(shardId.getShardName());
+ }
+
+ private void markShardAsInitialized(String shardName) {
+ LOG.debug("{}: Initializing shard [{}]", persistenceId(), shardName);
+
+ ShardInformation shardInformation = localShards.get(shardName);
+ if (shardInformation != null) {
+ shardInformation.setActorInitialized();
+
+ shardInformation.getActor().tell(new RegisterRoleChangeListener(), self());
+ }
+ }
+
+ @Override
+ protected void handleRecover(Object message) throws Exception {
+ if (message instanceof RecoveryCompleted) {
+ onRecoveryCompleted();
+ } else if (message instanceof SnapshotOffer) {
+ applyShardManagerSnapshot((ShardManagerSnapshot)((SnapshotOffer) message).snapshot());
+ }
+ }
+
+ private void onRecoveryCompleted() {
+ LOG.info("Recovery complete : {}", persistenceId());
+
+ // We no longer persist SchemaContext modules so delete all the prior messages from the akka
+ // journal on upgrade from Helium.
+ deleteMessages(lastSequenceNr());
+
+ if(currentSnapshot == null && restoreFromSnapshot != null &&
+ restoreFromSnapshot.getShardManagerSnapshot() != null) {
+ try(ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(
+ restoreFromSnapshot.getShardManagerSnapshot()))) {
+ ShardManagerSnapshot snapshot = (ShardManagerSnapshot) ois.readObject();
+
+ LOG.debug("{}: Deserialized restored ShardManagerSnapshot: {}", persistenceId(), snapshot);
+
+ applyShardManagerSnapshot(snapshot);
+ } catch(Exception e) {
+ LOG.error("{}: Error deserializing restored ShardManagerSnapshot", persistenceId(), e);
+ }
+ }
+
+ createLocalShards();
+ }
+
+ private void findLocalShard(FindLocalShard message) {
+ final ShardInformation shardInformation = localShards.get(message.getShardName());
+
+ if(shardInformation == null){
+ getSender().tell(new LocalShardNotFound(message.getShardName()), getSelf());
+ return;
+ }
+
+ sendResponse(shardInformation, message.isWaitUntilInitialized(), false, new Supplier<Object>() {
+ @Override
+ public Object get() {
+ return new LocalShardFound(shardInformation.getActor());
+ }
+ });
+ }
+
+ private void sendResponse(ShardInformation shardInformation, boolean doWait,
+ boolean wantShardReady, final Supplier<Object> messageSupplier) {
+ if (!shardInformation.isShardInitialized() || (wantShardReady && !shardInformation.isShardReadyWithLeaderId())) {
+ if(doWait) {
+ final ActorRef sender = getSender();
+ final ActorRef self = self();
+
+ Runnable replyRunnable = new Runnable() {
+ @Override
+ public void run() {
+ sender.tell(messageSupplier.get(), self);
+ }
+ };
+
+ OnShardInitialized onShardInitialized = wantShardReady ? new OnShardReady(replyRunnable) :
+ new OnShardInitialized(replyRunnable);
+
+ shardInformation.addOnShardInitialized(onShardInitialized);
+
+ FiniteDuration timeout = shardInformation.getDatastoreContext().getShardInitializationTimeout().duration();
+ if(shardInformation.isShardInitialized()) {
+ // If the shard is already initialized then we'll wait enough time for the shard to
+ // elect a leader, ie 2 times the election timeout.
+ timeout = FiniteDuration.create(shardInformation.getDatastoreContext().getShardRaftConfig()
+ .getElectionTimeOutInterval().toMillis() * 2, TimeUnit.MILLISECONDS);
+ }
+
+ LOG.debug("{}: Scheduling {} ms timer to wait for shard {}", persistenceId(), timeout.toMillis(),
+ shardInformation.getShardName());
+
+ Cancellable timeoutSchedule = getContext().system().scheduler().scheduleOnce(
+ timeout, getSelf(),
+ new ShardNotInitializedTimeout(shardInformation, onShardInitialized, sender),
+ getContext().dispatcher(), getSelf());
+
+ onShardInitialized.setTimeoutSchedule(timeoutSchedule);
+
+ } else if (!shardInformation.isShardInitialized()) {
+ LOG.debug("{}: Returning NotInitializedException for shard {}", persistenceId(),
+ shardInformation.getShardName());
+ getSender().tell(createNotInitializedException(shardInformation.shardId), getSelf());
+ } else {
+ LOG.debug("{}: Returning NoShardLeaderException for shard {}", persistenceId(),
+ shardInformation.getShardName());
+ getSender().tell(createNoShardLeaderException(shardInformation.shardId), getSelf());
+ }
+
+ return;
+ }
+
+ getSender().tell(messageSupplier.get(), getSelf());
+ }
+
+ private static NoShardLeaderException createNoShardLeaderException(ShardIdentifier shardId) {
+ return new NoShardLeaderException(null, shardId.toString());
+ }
+
+ 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));
+ }
+
+ private void memberRemoved(ClusterEvent.MemberRemoved message) {
+ String memberName = message.member().roles().iterator().next();
+
+ LOG.debug("{}: Received MemberRemoved: memberName: {}, address: {}", persistenceId(), memberName,
+ message.member().address());
+
+ peerAddressResolver.removePeerAddress(memberName);
+
+ for(ShardInformation info : localShards.values()){
+ info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
+ }
+ }
+
+ private void memberExited(ClusterEvent.MemberExited message) {
+ String memberName = message.member().roles().iterator().next();
+
+ LOG.debug("{}: Received MemberExited: memberName: {}, address: {}", persistenceId(), memberName,
+ message.member().address());
+
+ peerAddressResolver.removePeerAddress(memberName);
+
+ for(ShardInformation info : localShards.values()){
+ info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
+ }
+ }
+
+ private void memberUp(ClusterEvent.MemberUp message) {
+ String memberName = message.member().roles().iterator().next();
+
+ LOG.debug("{}: Received MemberUp: memberName: {}, address: {}", persistenceId(), memberName,
+ message.member().address());
+
+ addPeerAddress(memberName, message.member().address());
+
+ checkReady();
+ }
+
+ private void addPeerAddress(String memberName, Address address) {
+ peerAddressResolver.addPeerAddress(memberName, address);
+
+ for(ShardInformation info : localShards.values()){
+ String shardName = info.getShardName();
+ String peerId = getShardIdentifier(memberName, shardName).toString();
+ info.updatePeerAddress(peerId, peerAddressResolver.getShardActorAddress(shardName, memberName), getSelf());
+
+ info.peerUp(memberName, peerId, getSelf());
+ }
+ }
+
+ private void memberReachable(ClusterEvent.ReachableMember message) {
+ String memberName = message.member().roles().iterator().next();
+ LOG.debug("Received ReachableMember: memberName {}, address: {}", memberName, message.member().address());
+
+ addPeerAddress(memberName, message.member().address());
+
+ markMemberAvailable(memberName);
+ }
+
+ private void memberUnreachable(ClusterEvent.UnreachableMember message) {
+ String memberName = message.member().roles().iterator().next();
+ LOG.debug("Received UnreachableMember: memberName {}, address: {}", memberName, message.member().address());
+
+ markMemberUnavailable(memberName);
+ }
+
+ private void markMemberUnavailable(final String memberName) {
+ for(ShardInformation info : localShards.values()){
+ String leaderId = info.getLeaderId();
+ if(leaderId != null && leaderId.contains(memberName)) {
+ LOG.debug("Marking Leader {} as unavailable.", leaderId);
+ info.setLeaderAvailable(false);
+
+ primaryShardInfoCache.remove(info.getShardName());
+ }
+
+ info.peerDown(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
+ }
+ }
+
+ private void markMemberAvailable(final String memberName) {
+ for(ShardInformation info : localShards.values()){
+ String leaderId = info.getLeaderId();
+ if(leaderId != null && leaderId.contains(memberName)) {
+ LOG.debug("Marking Leader {} as available.", leaderId);
+ info.setLeaderAvailable(true);
+ }
+
+ info.peerUp(memberName, getShardIdentifier(memberName, info.getShardName()).toString(), getSelf());
+ }
+ }
+
+ private void onDatastoreContextFactory(DatastoreContextFactory factory) {
+ datastoreContextFactory = factory;
+ for (ShardInformation info : localShards.values()) {
+ info.setDatastoreContext(newShardDatastoreContext(info.getShardName()), getSelf());
+ }
+ }
+
+ private void onSwitchShardBehavior(SwitchShardBehavior message) {
+ ShardIdentifier identifier = ShardIdentifier.builder().fromShardIdString(message.getShardName()).build();
+
+ ShardInformation shardInformation = localShards.get(identifier.getShardName());
+
+ if(shardInformation != null && shardInformation.getActor() != null) {
+ shardInformation.getActor().tell(
+ new SwitchBehavior(message.getNewState(), message.getTerm()), getSelf());
+ } else {
+ LOG.warn("Could not switch the behavior of shard {} to {} - shard is not yet available",
+ message.getShardName(), message.getNewState());
+ }
+ }
+
+ /**
+ * Notifies all the local shards of a change in the schema context
+ *
+ * @param message
+ */
+ private void updateSchemaContext(final Object message) {
+ schemaContext = ((UpdateSchemaContext) message).getSchemaContext();
+
+ LOG.debug("Got updated SchemaContext: # of modules {}", schemaContext.getAllModuleIdentifiers().size());
+
+ for (ShardInformation info : localShards.values()) {
+ if (info.getActor() == null) {
+ LOG.debug("Creating Shard {}", info.getShardId());
+ info.setActor(newShardActor(schemaContext, info));
+ } else {
+ info.getActor().tell(message, getSelf());
+ }
+ }
+ }
+
+ @VisibleForTesting
+ protected ClusterWrapper getCluster() {
+ return cluster;
+ }
+
+ @VisibleForTesting
+ protected ActorRef newShardActor(final SchemaContext schemaContext, ShardInformation info) {
+ return getContext().actorOf(info.newProps(schemaContext)
+ .withDispatcher(shardDispatcherPath), info.getShardId().toString());
+ }
+
+ private void findPrimary(FindPrimary message) {
+ LOG.debug("{}: In findPrimary: {}", persistenceId(), message);
+
+ final String shardName = message.getShardName();
+ final boolean canReturnLocalShardState = !(message instanceof RemoteFindPrimary);
+
+ // First see if the there is a local replica for the shard
+ final ShardInformation info = localShards.get(shardName);
+ if (info != null && info.isActiveMember()) {
+ sendResponse(info, message.isWaitUntilReady(), true, new Supplier<Object>() {
+ @Override
+ public Object get() {
+ String primaryPath = info.getSerializedLeaderActor();
+ Object found = canReturnLocalShardState && info.isLeader() ?
+ new LocalPrimaryShardFound(primaryPath, info.getLocalShardDataTree().get()) :
+ new RemotePrimaryShardFound(primaryPath, info.getLeaderVersion());
+
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("{}: Found primary for {}: {}", persistenceId(), shardName, found);
+ }
+
+ return found;
+ }
+ });
+
+ return;
+ }
+
+ Collection<String> visitedAddresses;
+ if(message instanceof RemoteFindPrimary) {
+ visitedAddresses = ((RemoteFindPrimary)message).getVisitedAddresses();
+ } else {
+ visitedAddresses = new ArrayList<>();
+ }
+
+ visitedAddresses.add(peerAddressResolver.getShardManagerActorPathBuilder(cluster.getSelfAddress()).toString());
+
+ for(String address: peerAddressResolver.getShardManagerPeerActorAddresses()) {
+ if(visitedAddresses.contains(address)) {
+ continue;
+ }
+
+ LOG.debug("{}: findPrimary for {} forwarding to remote ShardManager {}, visitedAddresses: {}",
+ persistenceId(), shardName, address, visitedAddresses);
+
+ getContext().actorSelection(address).forward(new RemoteFindPrimary(shardName,
+ message.isWaitUntilReady(), visitedAddresses), getContext());
+ return;
+ }
+
+ LOG.debug("{}: No shard found for {}", persistenceId(), shardName);
+
+ getSender().tell(new PrimaryNotFoundException(
+ String.format("No primary shard found for %s.", shardName)), getSelf());
+ }
+
+ /**
+ * Construct the name of the shard actor given the name of the member on
+ * which the shard resides and the name of the shard
+ *
+ * @param memberName
+ * @param shardName
+ * @return
+ */
+ private ShardIdentifier getShardIdentifier(String memberName, String shardName){
+ return peerAddressResolver.getShardIdentifier(memberName, shardName);
+ }
+
+ /**
+ * Create shards that are local to the member on which the ShardManager
+ * runs
+ *
+ */
+ private void createLocalShards() {
+ String memberName = this.cluster.getCurrentMemberName();
+ Collection<String> memberShardNames = this.configuration.getMemberShardNames(memberName);
+
+ Map<String, DatastoreSnapshot.ShardSnapshot> shardSnapshots = new HashMap<>();
+ if(restoreFromSnapshot != null)
+ {
+ for(DatastoreSnapshot.ShardSnapshot snapshot: restoreFromSnapshot.getShardSnapshots()) {
+ shardSnapshots.put(snapshot.getName(), snapshot);
+ }
+ }
+
+ restoreFromSnapshot = null; // null out to GC
+
+ for(String shardName : memberShardNames){
+ ShardIdentifier shardId = getShardIdentifier(memberName, shardName);
+
+ LOG.debug("{}: Creating local shard: {}", persistenceId(), shardId);
+
+ Map<String, String> peerAddresses = getPeerAddresses(shardName);
+ localShards.put(shardName, new ShardInformation(shardName, shardId, peerAddresses,
+ newShardDatastoreContext(shardName), Shard.builder().restoreFromSnapshot(
+ shardSnapshots.get(shardName)), peerAddressResolver));
+ mBean.addLocalShard(shardId.toString());
+ }
+ }
+
+ /**
+ * Given the name of the shard find the addresses of all it's peers
+ *
+ * @param shardName
+ */
+ private Map<String, String> getPeerAddresses(String shardName) {
+ Collection<String> members = configuration.getMembersFromShardName(shardName);
+ Map<String, String> peerAddresses = new HashMap<>();
+
+ String currentMemberName = this.cluster.getCurrentMemberName();
+
+ for(String memberName : members) {
+ if(!currentMemberName.equals(memberName)) {
+ ShardIdentifier shardId = getShardIdentifier(memberName, shardName);
+ String address = peerAddressResolver.getShardActorAddress(shardName, memberName);
+ peerAddresses.put(shardId.toString(), address);
+ }
+ }
+ return peerAddresses;
+ }
+
+ @Override
+ public SupervisorStrategy supervisorStrategy() {
+
+ return new OneForOneStrategy(10, Duration.create("1 minute"),
+ new Function<Throwable, SupervisorStrategy.Directive>() {
+ @Override
+ public SupervisorStrategy.Directive apply(Throwable t) {
+ LOG.warn("Supervisor Strategy caught unexpected exception - resuming", t);
+ return SupervisorStrategy.resume();
+ }
+ }
+ );
+
+ }
+
+ @Override
+ public String persistenceId() {
+ return persistenceId;
+ }
+
+ @VisibleForTesting
+ ShardManagerInfoMBean getMBean(){
+ return mBean;
+ }
+
+ private boolean isShardReplicaOperationInProgress(final String shardName, final ActorRef sender) {
+ if (shardReplicaOperationsInProgress.contains(shardName)) {
+ String msg = String.format("A shard replica operation for %s is already in progress", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ sender.tell(new akka.actor.Status.Failure(new IllegalStateException(msg)), getSelf());
+ return true;
+ }
+
+ return false;
+ }
+
+ private void onAddShardReplica (final AddShardReplica shardReplicaMsg) {
+ final String shardName = shardReplicaMsg.getShardName();
+
+ LOG.debug("{}: onAddShardReplica: {}", persistenceId(), shardReplicaMsg);
+
+ // verify the shard with the specified name is present in the cluster configuration
+ if (!(this.configuration.isShardConfigured(shardName))) {
+ 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
+ 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;
+ }
+
+ findPrimary(shardName, new AutoFindPrimaryFailureResponseHandler(getSender(), shardName, persistenceId(), getSelf()) {
+ @Override
+ public void onRemotePrimaryShardFound(RemotePrimaryShardFound response) {
+ getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
+ }
+
+ @Override
+ public void onLocalPrimaryFound(LocalPrimaryShardFound message) {
+ sendLocalReplicaAlreadyExistsReply(getShardName(), getTargetActor());
+ }
+
+ });
+ }
+
+ private void sendLocalReplicaAlreadyExistsReply(String shardName, ActorRef sender) {
+ String msg = String.format("Local shard %s already exists", shardName);
+ LOG.debug ("{}: {}", persistenceId(), msg);
+ sender.tell(new akka.actor.Status.Failure(new AlreadyExistsException(msg)), getSelf());
+ }
+
+ private void addShard(final String shardName, final RemotePrimaryShardFound response, final ActorRef sender) {
+ if(isShardReplicaOperationInProgress(shardName, sender)) {
+ return;
+ }
+
+ shardReplicaOperationsInProgress.add(shardName);
+
+ final ShardInformation shardInfo;
+ final boolean removeShardOnFailure;
+ ShardInformation existingShardInfo = localShards.get(shardName);
+ if(existingShardInfo == null) {
+ removeShardOnFailure = true;
+ ShardIdentifier shardId = getShardIdentifier(cluster.getCurrentMemberName(), shardName);
+
+ DatastoreContext datastoreContext = newShardDatastoreContextBuilder(shardName).customRaftPolicyImplementation(
+ DisableElectionsRaftPolicy.class.getName()).build();
+
+ shardInfo = new ShardInformation(shardName, shardId, getPeerAddresses(shardName), datastoreContext,
+ Shard.builder(), peerAddressResolver);
+ shardInfo.setActiveMember(false);
+ localShards.put(shardName, shardInfo);
+ shardInfo.setActor(newShardActor(schemaContext, shardInfo));
+ } else {
+ removeShardOnFailure = false;
+ shardInfo = existingShardInfo;
+ }
+
+ String localShardAddress = peerAddressResolver.getShardActorAddress(shardName, cluster.getCurrentMemberName());
+
+ //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(), shardInfo.getShardId());
+
+ Timeout addServerTimeout = new Timeout(shardInfo.getDatastoreContext().getShardLeaderElectionTimeout().
+ duration());
+ Future<Object> futureObj = ask(getContext().actorSelection(response.getPrimaryPath()),
+ new AddServer(shardInfo.getShardId().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);
+
+ String msg = String.format("AddServer request to leader %s for shard %s failed",
+ response.getPrimaryPath(), shardName);
+ self().tell(new ForwardedAddServerFailure(shardName, msg, failure, removeShardOnFailure), sender);
+ } else {
+ self().tell(new ForwardedAddServerReply(shardInfo, (AddServerReply)addServerResponse,
+ response.getPrimaryPath(), removeShardOnFailure), sender);
+ }
+ }
+ }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
+ }
+
+ private void onAddServerFailure(String shardName, String message, Throwable failure, ActorRef sender,
+ boolean removeShardOnFailure) {
+ shardReplicaOperationsInProgress.remove(shardName);
+
+ if(removeShardOnFailure) {
+ ShardInformation shardInfo = localShards.remove(shardName);
+ if (shardInfo.getActor() != null) {
+ shardInfo.getActor().tell(PoisonPill.getInstance(), getSelf());
+ }
+ }
+
+ sender.tell(new akka.actor.Status.Failure(message == null ? failure :
+ new RuntimeException(message, failure)), getSelf());
+ }
+
+ private void onAddServerReply(ShardInformation shardInfo, AddServerReply replyMsg, ActorRef sender,
+ String leaderPath, boolean removeShardOnFailure) {
+ String shardName = shardInfo.getShardName();
+ shardReplicaOperationsInProgress.remove(shardName);
+
+ 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(newShardDatastoreContext(shardName), getSelf());
+ shardInfo.setActiveMember(true);
+ persistShardList();
+
+ mBean.addLocalShard(shardInfo.getShardId().toString());
+ sender.tell(new akka.actor.Status.Success(null), getSelf());
+ } else if(replyMsg.getStatus() == ServerChangeStatus.ALREADY_EXISTS) {
+ sendLocalReplicaAlreadyExistsReply(shardName, sender);
+ } else {
+ LOG.warn ("{}: Leader failed to add shard replica {} with status {}",
+ persistenceId(), shardName, replyMsg.getStatus());
+
+ Exception failure = getServerChangeException(AddServer.class, replyMsg.getStatus(), leaderPath, shardInfo.getShardId());
+
+ onAddServerFailure(shardName, null, failure, sender, removeShardOnFailure);
+ }
+ }
+
+ private static Exception getServerChangeException(Class<?> serverChange, ServerChangeStatus serverChangeStatus,
+ String leaderPath, ShardIdentifier shardId) {
+ Exception failure;
+ switch (serverChangeStatus) {
+ case TIMEOUT:
+ failure = new TimeoutException(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, shardId.getShardName()));
+ break;
+ case NO_LEADER:
+ failure = createNoShardLeaderException(shardId);
+ break;
+ case NOT_SUPPORTED:
+ failure = new UnsupportedOperationException(String.format("%s request is not supported for shard %s",
+ serverChange.getSimpleName(), shardId.getShardName()));
+ break;
+ default :
+ failure = new RuntimeException(String.format(
+ "%s request to leader %s for shard %s failed with status %s",
+ serverChange.getSimpleName(), leaderPath, shardId.getShardName(), serverChangeStatus));
+ }
+ return failure;
+ }
+
+ private void onRemoveShardReplica (final RemoveShardReplica shardReplicaMsg) {
+ LOG.debug("{}: onRemoveShardReplica: {}", persistenceId(), shardReplicaMsg);
+
+ findPrimary(shardReplicaMsg.getShardName(), new AutoFindPrimaryFailureResponseHandler(getSender(),
+ shardReplicaMsg.getShardName(), persistenceId(), getSelf()) {
+ @Override
+ public void onRemotePrimaryShardFound(RemotePrimaryShardFound response) {
+ getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
+ }
+
+ @Override
+ public void onLocalPrimaryFound(LocalPrimaryShardFound response) {
+ getSelf().tell(new PrimaryShardFoundForContext(getShardName(), shardReplicaMsg, response), getTargetActor());
+ }
+ });
+ }
+
+ private void persistShardList() {
+ List<String> shardList = new ArrayList<>(localShards.keySet());
+ for (ShardInformation shardInfo : localShards.values()) {
+ if (!shardInfo.isActiveMember()) {
+ shardList.remove(shardInfo.getShardName());
+ }
+ }
+ LOG.debug ("{}: persisting the shard list {}", persistenceId(), shardList);
+ saveSnapshot(updateShardManagerSnapshot(shardList));
+ }
+
+ private ShardManagerSnapshot updateShardManagerSnapshot(List<String> shardList) {
+ currentSnapshot = new ShardManagerSnapshot(shardList);
+ return currentSnapshot;
+ }
+
+ private void applyShardManagerSnapshot(ShardManagerSnapshot snapshot) {
+ currentSnapshot = snapshot;
+
+ LOG.debug ("{}: onSnapshotOffer: {}", persistenceId(), currentSnapshot);
+
+ String currentMember = cluster.getCurrentMemberName();
+ Set<String> configuredShardList =
+ new HashSet<>(configuration.getMemberShardNames(currentMember));
+ for (String shard : currentSnapshot.getShardList()) {
+ if (!configuredShardList.contains(shard)) {
+ // add the current member as a replica for the shard
+ LOG.debug ("{}: adding shard {}", persistenceId(), shard);
+ configuration.addMemberReplicaForShard(shard, currentMember);
+ } else {
+ configuredShardList.remove(shard);
+ }
+ }
+ for (String shard : configuredShardList) {
+ // remove the member as a replica for the shard
+ LOG.debug ("{}: removing shard {}", persistenceId(), shard);
+ configuration.removeMemberReplicaForShard(shard, currentMember);
+ }
+ }
+
+ private void onSaveSnapshotSuccess (SaveSnapshotSuccess successMessage) {
+ LOG.debug ("{} saved ShardManager snapshot successfully. Deleting the prev snapshot if available",
+ persistenceId());
+ deleteSnapshots(new SnapshotSelectionCriteria(scala.Long.MaxValue(), successMessage.metadata().timestamp() - 1,
+ 0, 0));
+ }
+
+ private static class ForwardedAddServerReply {
+ ShardInformation shardInfo;
+ AddServerReply addServerReply;
+ String leaderPath;
+ boolean removeShardOnFailure;
+
+ ForwardedAddServerReply(ShardInformation shardInfo, AddServerReply addServerReply, String leaderPath,
+ boolean removeShardOnFailure) {
+ this.shardInfo = shardInfo;
+ this.addServerReply = addServerReply;
+ this.leaderPath = leaderPath;
+ this.removeShardOnFailure = removeShardOnFailure;
+ }
+ }
+
+ private static class ForwardedAddServerFailure {
+ String shardName;
+ String failureMessage;
+ Throwable failure;
+ boolean removeShardOnFailure;
+
+ ForwardedAddServerFailure(String shardName, String failureMessage, Throwable failure,
+ boolean removeShardOnFailure) {
+ this.shardName = shardName;
+ this.failureMessage = failureMessage;
+ this.failure = failure;
+ this.removeShardOnFailure = removeShardOnFailure;
+ }
+ }
+
+ @VisibleForTesting
+ protected static class ShardInformation {
+ private final ShardIdentifier shardId;
+ private final String shardName;
+ private ActorRef actor;
+ private final Map<String, String> initialPeerAddresses;
+ private Optional<DataTree> localShardDataTree;
+ private boolean leaderAvailable = false;
+
+ // flag that determines if the actor is ready for business
+ private boolean actorInitialized = false;
+
+ private boolean followerSyncStatus = false;
+
+ private final Set<OnShardInitialized> onShardInitializedSet = Sets.newHashSet();
+ private String role ;
+ private String leaderId;
+ private short leaderVersion;
+
+ private DatastoreContext datastoreContext;
+ private Shard.AbstractBuilder<?, ?> builder;
+ private final ShardPeerAddressResolver addressResolver;
+ private boolean isActiveMember = true;
+
+ private ShardInformation(String shardName, ShardIdentifier shardId,
+ Map<String, String> initialPeerAddresses, DatastoreContext datastoreContext,
+ Shard.AbstractBuilder<?, ?> builder, ShardPeerAddressResolver addressResolver) {
+ this.shardName = shardName;
+ this.shardId = shardId;
+ this.initialPeerAddresses = initialPeerAddresses;
+ this.datastoreContext = datastoreContext;
+ this.builder = builder;
+ this.addressResolver = addressResolver;
+ }
+
+ Props newProps(SchemaContext schemaContext) {
+ Preconditions.checkNotNull(builder);
+ Props props = builder.id(shardId).peerAddresses(initialPeerAddresses).datastoreContext(datastoreContext).
+ schemaContext(schemaContext).props();
+ builder = null;
+ return props;
+ }
+
+ String getShardName() {
+ return shardName;
+ }
+
+ @Nullable
+ ActorRef getActor(){
+ return actor;
+ }
+
+ void setActor(ActorRef actor) {
+ this.actor = actor;
+ }
+
+ ShardIdentifier getShardId() {
+ return shardId;
+ }
+
+ void setLocalDataTree(Optional<DataTree> localShardDataTree) {
+ this.localShardDataTree = localShardDataTree;
+ }
+
+ Optional<DataTree> getLocalShardDataTree() {
+ return localShardDataTree;
+ }
+
+ DatastoreContext getDatastoreContext() {
+ return datastoreContext;
+ }
+
+ void setDatastoreContext(DatastoreContext datastoreContext, ActorRef sender) {
+ this.datastoreContext = datastoreContext;
+ if (actor != null) {
+ LOG.debug ("Sending new DatastoreContext to {}", shardId);
+ actor.tell(this.datastoreContext, sender);
+ }
+ }
+
+ void updatePeerAddress(String peerId, String peerAddress, ActorRef sender){
+ LOG.info("updatePeerAddress for peer {} with address {}", peerId, peerAddress);
+
+ if(actor != null) {
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Sending PeerAddressResolved for peer {} with address {} to {}",
+ peerId, peerAddress, actor.path());
+ }
+
+ actor.tell(new PeerAddressResolved(peerId, peerAddress), sender);
+ }
+
+ notifyOnShardInitializedCallbacks();
+ }
+
+ void peerDown(String memberName, String peerId, ActorRef sender) {
+ if(actor != null) {
+ actor.tell(new PeerDown(memberName, peerId), sender);
+ }
+ }
+
+ void peerUp(String memberName, String peerId, ActorRef sender) {
+ if(actor != null) {
+ actor.tell(new PeerUp(memberName, peerId), sender);
+ }
+ }
+
+ boolean isShardReady() {
+ return !RaftState.Candidate.name().equals(role) && !Strings.isNullOrEmpty(role);
+ }
+
+ boolean isShardReadyWithLeaderId() {
+ return leaderAvailable && isShardReady() && !RaftState.IsolatedLeader.name().equals(role) &&
+ (isLeader() || addressResolver.resolve(leaderId) != null);
+ }
+
+ boolean isShardInitialized() {
+ return getActor() != null && actorInitialized;
+ }
+
+ boolean isLeader() {
+ return Objects.equal(leaderId, shardId.toString());
+ }
+
+ String getSerializedLeaderActor() {
+ if(isLeader()) {
+ return Serialization.serializedActorPath(getActor());
+ } else {
+ return addressResolver.resolve(leaderId);
+ }
+ }
+
+ void setActorInitialized() {
+ LOG.debug("Shard {} is initialized", shardId);
+
+ this.actorInitialized = true;
+
+ notifyOnShardInitializedCallbacks();
+ }
+
+ private void notifyOnShardInitializedCallbacks() {
+ if(onShardInitializedSet.isEmpty()) {
+ return;
+ }
+
+ boolean ready = isShardReadyWithLeaderId();
+
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Shard {} is {} - notifying {} OnShardInitialized callbacks", shardId,
+ ready ? "ready" : "initialized", onShardInitializedSet.size());
+ }
+
+ Iterator<OnShardInitialized> iter = onShardInitializedSet.iterator();
+ while(iter.hasNext()) {
+ OnShardInitialized onShardInitialized = iter.next();
+ if(!(onShardInitialized instanceof OnShardReady) || ready) {
+ iter.remove();
+ onShardInitialized.getTimeoutSchedule().cancel();
+ onShardInitialized.getReplyRunnable().run();
+ }
+ }
+ }
+
+ void addOnShardInitialized(OnShardInitialized onShardInitialized) {
+ onShardInitializedSet.add(onShardInitialized);
+ }
+
+ void removeOnShardInitialized(OnShardInitialized onShardInitialized) {
+ onShardInitializedSet.remove(onShardInitialized);
+ }
+
+ void setRole(String newRole) {
+ this.role = newRole;
+
+ notifyOnShardInitializedCallbacks();
+ }
+
+ void setFollowerSyncStatus(boolean syncStatus){
+ this.followerSyncStatus = syncStatus;
+ }
+
+ boolean isInSync(){
+ if(RaftState.Follower.name().equals(this.role)){
+ return followerSyncStatus;
+ } else if(RaftState.Leader.name().equals(this.role)){
+ return true;
+ }
+
+ return false;
+ }
+
+ boolean setLeaderId(String leaderId) {
+ boolean changed = !Objects.equal(this.leaderId, leaderId);
+ this.leaderId = leaderId;
+ if(leaderId != null) {
+ this.leaderAvailable = true;
+ }
+ notifyOnShardInitializedCallbacks();
+
+ return changed;
+ }
+
+ String getLeaderId() {
+ return leaderId;
+ }
+
+ void setLeaderAvailable(boolean leaderAvailable) {
+ this.leaderAvailable = leaderAvailable;
+
+ if(leaderAvailable) {
+ notifyOnShardInitializedCallbacks();
+ }
+ }
+
+ short getLeaderVersion() {
+ return leaderVersion;
+ }
+
+ void setLeaderVersion(short leaderVersion) {
+ this.leaderVersion = leaderVersion;
+ }
+
+ boolean isActiveMember() {
+ return isActiveMember;
+ }
+
+ void setActiveMember(boolean isActiveMember) {
+ this.isActiveMember = isActiveMember;
+ }
+ }
+
+ private static class OnShardInitialized {
+ private final Runnable replyRunnable;
+ private Cancellable timeoutSchedule;
+
+ OnShardInitialized(Runnable replyRunnable) {
+ this.replyRunnable = replyRunnable;
+ }
+
+ Runnable getReplyRunnable() {
+ return replyRunnable;
+ }
+
+ Cancellable getTimeoutSchedule() {
+ return timeoutSchedule;
+ }
+
+ void setTimeoutSchedule(Cancellable timeoutSchedule) {
+ this.timeoutSchedule = timeoutSchedule;
+ }
+ }
+
+ private static class OnShardReady extends OnShardInitialized {
+ OnShardReady(Runnable replyRunnable) {
+ super(replyRunnable);
+ }
+ }
+
+ private static class ShardNotInitializedTimeout {
+ private final ActorRef sender;
+ private final ShardInformation shardInfo;
+ private final OnShardInitialized onShardInitialized;
+
+ ShardNotInitializedTimeout(ShardInformation shardInfo, OnShardInitialized onShardInitialized, ActorRef sender) {
+ this.sender = sender;
+ this.shardInfo = shardInfo;
+ this.onShardInitialized = onShardInitialized;
+ }
+
+ ActorRef getSender() {
+ return sender;
+ }
+
+ ShardInformation getShardInfo() {
+ return shardInfo;
+ }
+
+ OnShardInitialized getOnShardInitialized() {
+ return onShardInitialized;
+ }
+ }
+
+ public static Builder builder() {
+ return new Builder();
+ }
+
+ public static abstract class AbstractBuilder<T extends AbstractBuilder<T>> {
+ private ClusterWrapper cluster;
+ private Configuration configuration;
+ private DatastoreContextFactory datastoreContextFactory;
+ private CountDownLatch waitTillReadyCountdownLatch;
+ private PrimaryShardInfoFutureCache primaryShardInfoCache;
+ private DatastoreSnapshot restoreFromSnapshot;
+ private volatile boolean sealed;
+
+ @SuppressWarnings("unchecked")
+ private T self() {
+ return (T) this;
+ }
+
+ protected void checkSealed() {
+ Preconditions.checkState(!sealed, "Builder is already sealed - further modifications are not allowed");
+ }
+
+ public T cluster(ClusterWrapper cluster) {
+ checkSealed();
+ this.cluster = cluster;
+ return self();
+ }
+
+ public T configuration(Configuration configuration) {
+ checkSealed();
+ this.configuration = configuration;
+ return self();
+ }
+
+ public T datastoreContextFactory(DatastoreContextFactory datastoreContextFactory) {
+ checkSealed();
+ this.datastoreContextFactory = datastoreContextFactory;
+ return self();
+ }
+
+ public T waitTillReadyCountdownLatch(CountDownLatch waitTillReadyCountdownLatch) {
+ checkSealed();
+ this.waitTillReadyCountdownLatch = waitTillReadyCountdownLatch;
+ return self();
+ }
+
+ public T primaryShardInfoCache(PrimaryShardInfoFutureCache primaryShardInfoCache) {
+ checkSealed();
+ this.primaryShardInfoCache = primaryShardInfoCache;
+ return self();
+ }
+
+ public T restoreFromSnapshot(DatastoreSnapshot restoreFromSnapshot) {
+ checkSealed();
+ this.restoreFromSnapshot = restoreFromSnapshot;
+ return self();
+ }
+
+ protected void verify() {
+ sealed = true;
+ Preconditions.checkNotNull(cluster, "cluster should not be null");
+ Preconditions.checkNotNull(configuration, "configuration should not be null");
+ Preconditions.checkNotNull(datastoreContextFactory, "datastoreContextFactory should not be null");
+ Preconditions.checkNotNull(waitTillReadyCountdownLatch, "waitTillReadyCountdownLatch should not be null");
+ Preconditions.checkNotNull(primaryShardInfoCache, "primaryShardInfoCache should not be null");
+ }
+
+ public Props props() {
+ verify();
+ return Props.create(ShardManager.class, this);
+ }
+ }
+
+ public static class Builder extends AbstractBuilder<Builder> {
+ }
+
+ private void findPrimary(final String shardName, final FindPrimaryResponseHandler handler) {
+ Timeout findPrimaryTimeout = new Timeout(datastoreContextFactory.getBaseDatastoreContext().
+ getShardInitializationTimeout().duration().$times(2));
+
+
+ Future<Object> futureObj = ask(getSelf(), new FindPrimary(shardName, true), findPrimaryTimeout);
+ futureObj.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure, Object response) {
+ if (failure != null) {
+ handler.onFailure(failure);
+ } else {
+ if(response instanceof RemotePrimaryShardFound) {
+ handler.onRemotePrimaryShardFound((RemotePrimaryShardFound) response);
+ } else if(response instanceof LocalPrimaryShardFound) {
+ handler.onLocalPrimaryFound((LocalPrimaryShardFound) response);
+ } else {
+ handler.onUnknownResponse(response);
+ }
+ }
+ }
+ }, new Dispatchers(context().system().dispatchers()).getDispatcher(Dispatchers.DispatcherType.Client));
+ }
+
+ /**
+ * The FindPrimaryResponseHandler provides specific callback methods which are invoked when a response to the
+ * a remote or local find primary message is processed
+ */
+ private static interface FindPrimaryResponseHandler {
+ /**
+ * Invoked when a Failure message is received as a response
+ *
+ * @param failure
+ */
+ void onFailure(Throwable failure);
+
+ /**
+ * Invoked when a RemotePrimaryShardFound response is received
+ *
+ * @param response
+ */
+ void onRemotePrimaryShardFound(RemotePrimaryShardFound response);
+
+ /**
+ * Invoked when a LocalPrimaryShardFound response is received
+ * @param response
+ */
+ void onLocalPrimaryFound(LocalPrimaryShardFound response);
+
+ /**
+ * Invoked when an unknown response is received. This is another type of failure.
+ *
+ * @param response
+ */
+ void onUnknownResponse(Object response);
+ }
+
+ /**
+ * The AutoFindPrimaryFailureResponseHandler automatically processes Failure responses when finding a primary
+ * replica and sends a wrapped Failure response to some targetActor
+ */
+ private static abstract class AutoFindPrimaryFailureResponseHandler implements FindPrimaryResponseHandler {
+ private final ActorRef targetActor;
+ private final String shardName;
+ private final String persistenceId;
+ private final ActorRef shardManagerActor;
+
+ /**
+ * @param targetActor The actor to whom the Failure response should be sent when a FindPrimary failure occurs
+ * @param shardName The name of the shard for which the primary replica had to be found
+ * @param persistenceId The persistenceId for the ShardManager
+ * @param shardManagerActor The ShardManager actor which triggered the call to FindPrimary
+ */
+ protected AutoFindPrimaryFailureResponseHandler(ActorRef targetActor, String shardName, String persistenceId, ActorRef shardManagerActor){
+ this.targetActor = Preconditions.checkNotNull(targetActor);
+ this.shardName = Preconditions.checkNotNull(shardName);
+ this.persistenceId = Preconditions.checkNotNull(persistenceId);
+ this.shardManagerActor = Preconditions.checkNotNull(shardManagerActor);
+ }
+
+ public ActorRef getTargetActor() {
+ return targetActor;
+ }
+
+ public String getShardName() {
+ return shardName;
+ }
+
+ @Override
+ public void onFailure(Throwable failure) {
+ LOG.debug ("{}: Received failure from FindPrimary for shard {}", persistenceId, shardName, failure);
+ targetActor.tell(new akka.actor.Status.Failure(new RuntimeException(
+ String.format("Failed to find leader for shard %s", shardName), failure)), shardManagerActor);
+ }
+
+ @Override
+ public void onUnknownResponse(Object response) {
+ String msg = String.format("Failed to find leader for shard %s: received response: %s",
+ shardName, response);
+ LOG.debug ("{}: {}", persistenceId, msg);
+ targetActor.tell(new akka.actor.Status.Failure(response instanceof Throwable ? (Throwable) response :
+ new RuntimeException(msg)), shardManagerActor);
+ }
+ }
+
+
+ /**
+ * The PrimaryShardFoundForContext is a DTO which puts together a message (aka 'Context' message) which needs to be
+ * forwarded to the primary replica of a shard and the message (aka 'PrimaryShardFound' message) that is received
+ * as a successful response to find primary.
+ */
+ private static class PrimaryShardFoundForContext {
+ private final String shardName;
+ private final Object contextMessage;
+ private final RemotePrimaryShardFound remotePrimaryShardFound;
+ private final LocalPrimaryShardFound localPrimaryShardFound;
+
+ public PrimaryShardFoundForContext(@Nonnull String shardName, @Nonnull Object contextMessage,
+ @Nonnull Object primaryFoundMessage) {
+ this.shardName = Preconditions.checkNotNull(shardName);
+ this.contextMessage = Preconditions.checkNotNull(contextMessage);
+ Preconditions.checkNotNull(primaryFoundMessage);
+ this.remotePrimaryShardFound = (primaryFoundMessage instanceof RemotePrimaryShardFound) ?
+ (RemotePrimaryShardFound) primaryFoundMessage : null;
+ this.localPrimaryShardFound = (primaryFoundMessage instanceof LocalPrimaryShardFound) ?
+ (LocalPrimaryShardFound) primaryFoundMessage : null;
+ }
+
+ @Nonnull
+ String getPrimaryPath(){
+ if(remotePrimaryShardFound != null) {
+ return remotePrimaryShardFound.getPrimaryPath();
+ }
+ return localPrimaryShardFound.getPrimaryPath();
+ }
+
+ @Nonnull
+ Object getContextMessage() {
+ return contextMessage;
+ }
+
+ @Nullable
+ RemotePrimaryShardFound getRemotePrimaryShardFound() {
+ return remotePrimaryShardFound;
+ }
+
+ @Nonnull
+ String getShardName() {
+ return shardName;
+ }
+ }
+
+ /**
+ * The WrappedShardResponse class wraps a response from a Shard.
+ */
+ private static class WrappedShardResponse {
+ private final ShardIdentifier shardId;
+ private final Object response;
+ private final String leaderPath;
+
+ private WrappedShardResponse(ShardIdentifier shardId, Object response, String leaderPath) {
+ this.shardId = shardId;
+ this.response = response;
+ this.leaderPath = leaderPath;
+ }
+
+ ShardIdentifier getShardId() {
+ return shardId;
+ }
+
+ Object getResponse() {
+ return response;
+ }
+
+ String getLeaderPath() {
+ return leaderPath;
+ }
+ }
+}
+
+
+
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import akka.actor.ActorRef;
import akka.actor.PoisonPill;
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore.jmx.mbeans.shardmanager;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import akka.actor.ActorRef;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.util.Collection;
import java.util.List;
-import org.opendaylight.controller.cluster.datastore.ShardManager;
+import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shardmanager.ShardManagerInfoMBean;
import org.opendaylight.controller.cluster.datastore.messages.SwitchShardBehavior;
import org.opendaylight.controller.cluster.raft.RaftState;
import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-public class ShardManagerInfo extends AbstractMXBean implements ShardManagerInfoMBean {
+final class ShardManagerInfo extends AbstractMXBean implements ShardManagerInfoMBean {
public static final String JMX_CATEGORY_SHARD_MANAGER = "ShardManager";
private ShardManager shardManager;
- public ShardManagerInfo(String memberName, String name, String mxBeanType, List<String> localShards) {
+ private ShardManagerInfo(String memberName, String name, String mxBeanType, List<String> localShards) {
super(name, mxBeanType, JMX_CATEGORY_SHARD_MANAGER);
this.memberName = memberName;
this.localShards = localShards;
}
- public static ShardManagerInfo createShardManagerMBean(String memberName, String name, String mxBeanType,
+ static ShardManagerInfo createShardManagerMBean(String memberName, String name, String mxBeanType,
List<String> localShards){
ShardManagerInfo shardManagerInfo = new ShardManagerInfo(memberName, name, mxBeanType, localShards);
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import akka.actor.Address;
import java.util.ArrayList;
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.util.concurrent.TimeoutException;
import org.junit.After;
import org.junit.Test;
+import org.opendaylight.controller.cluster.datastore.AbstractActorTest;
import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot;
import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot.ShardSnapshot;
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
+import org.opendaylight.controller.cluster.datastore.AbstractActorTest;
+import org.opendaylight.controller.cluster.datastore.ClusterWrapperImpl;
+import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
+import org.opendaylight.controller.cluster.datastore.DatastoreContext;
+import org.opendaylight.controller.cluster.datastore.DatastoreContextFactory;
+import org.opendaylight.controller.cluster.datastore.Shard;
+import org.opendaylight.controller.cluster.datastore.ShardManager.SchemaContextModules;
+import org.opendaylight.controller.cluster.datastore.ShardManagerSnapshot;
import org.opendaylight.controller.cluster.datastore.config.Configuration;
import org.opendaylight.controller.cluster.datastore.config.ConfigurationImpl;
import org.opendaylight.controller.cluster.datastore.config.EmptyModuleShardConfigProvider;
@Test
public void testOnRecoveryJournalIsCleaned() {
String persistenceID = "shard-manager-" + shardMrgIDSuffix;
- InMemoryJournal.addEntry(persistenceID, 1L, new ShardManager.SchemaContextModules(
- ImmutableSet.of("foo")));
- InMemoryJournal.addEntry(persistenceID, 2L, new ShardManager.SchemaContextModules(
- ImmutableSet.of("bar")));
+ InMemoryJournal.addEntry(persistenceID, 1L, new SchemaContextModules(ImmutableSet.of("foo")));
+ InMemoryJournal.addEntry(persistenceID, 2L, new SchemaContextModules(ImmutableSet.of("bar")));
InMemoryJournal.addDeleteMessagesCompleteLatch(persistenceID);
TestShardManager shardManager = newTestShardManager();
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-package org.opendaylight.controller.cluster.datastore;
+package org.opendaylight.controller.cluster.datastore.shardmanager;
import static org.junit.Assert.assertEquals;
import akka.actor.Address;
Code Review / controller.git / commitdiff