-/*
- * Copyright (c) 2016 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.sharding;
-
-import static java.util.Objects.requireNonNull;
-
-import akka.actor.ActorRef;
-import akka.actor.ActorSelection;
-import akka.actor.ActorSystem;
-import akka.actor.PoisonPill;
-import akka.actor.Props;
-import akka.actor.Status;
-import akka.actor.Status.Success;
-import akka.cluster.ClusterEvent;
-import akka.cluster.ClusterEvent.MemberExited;
-import akka.cluster.ClusterEvent.MemberRemoved;
-import akka.cluster.ClusterEvent.MemberUp;
-import akka.cluster.ClusterEvent.MemberWeaklyUp;
-import akka.cluster.ClusterEvent.ReachableMember;
-import akka.cluster.ClusterEvent.UnreachableMember;
-import akka.cluster.Member;
-import akka.dispatch.OnComplete;
-import akka.pattern.Patterns;
-import akka.util.Timeout;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.TimeUnit;
-import org.opendaylight.controller.cluster.access.concepts.MemberName;
-import org.opendaylight.controller.cluster.common.actor.AbstractUntypedPersistentActor;
-import org.opendaylight.controller.cluster.datastore.ClusterWrapper;
-import org.opendaylight.controller.cluster.datastore.DistributedDataStoreInterface;
-import org.opendaylight.controller.cluster.datastore.config.PrefixShardConfiguration;
-import org.opendaylight.controller.cluster.datastore.utils.ActorUtils;
-import org.opendaylight.controller.cluster.datastore.utils.ClusterUtils;
-import org.opendaylight.controller.cluster.raft.client.messages.FindLeader;
-import org.opendaylight.controller.cluster.raft.client.messages.FindLeaderReply;
-import org.opendaylight.controller.cluster.sharding.messages.LookupPrefixShard;
-import org.opendaylight.controller.cluster.sharding.messages.NotifyProducerCreated;
-import org.opendaylight.controller.cluster.sharding.messages.NotifyProducerRemoved;
-import org.opendaylight.controller.cluster.sharding.messages.PrefixShardCreated;
-import org.opendaylight.controller.cluster.sharding.messages.PrefixShardRemovalLookup;
-import org.opendaylight.controller.cluster.sharding.messages.PrefixShardRemoved;
-import org.opendaylight.controller.cluster.sharding.messages.ProducerCreated;
-import org.opendaylight.controller.cluster.sharding.messages.ProducerRemoved;
-import org.opendaylight.controller.cluster.sharding.messages.StartConfigShardLookup;
-import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeProducer;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeProducerException;
-import org.opendaylight.mdsal.dom.api.DOMDataTreeShard;
-import org.opendaylight.mdsal.dom.broker.DOMDataTreeShardRegistration;
-import org.opendaylight.mdsal.dom.spi.DOMDataTreePrefixTableEntry;
-import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
-import org.opendaylight.yangtools.concepts.ListenerRegistration;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import scala.compat.java8.FutureConverters;
-import scala.concurrent.Future;
-import scala.concurrent.duration.FiniteDuration;
-
-/**
- * Actor that tracks currently open producers/shards on remote nodes and handles notifications of remote
- * nodes of newly open producers/shards on the local node.
- */
-@Deprecated(forRemoval = true)
-public class ShardedDataTreeActor extends AbstractUntypedPersistentActor {
-
- private static final Logger LOG = LoggerFactory.getLogger(ShardedDataTreeActor.class);
-
- private static final String PERSISTENCE_ID = "sharding-service-actor";
- private static final Timeout DEFAULT_ASK_TIMEOUT = new Timeout(15, TimeUnit.SECONDS);
-
- static final FiniteDuration SHARD_LOOKUP_TASK_INTERVAL = new FiniteDuration(1L, TimeUnit.SECONDS);
-
- private final DistributedShardedDOMDataTree shardingService;
- private final ActorSystem actorSystem;
- private final ClusterWrapper clusterWrapper;
- // helper actorContext used only for static calls to executeAsync etc
- // for calls that need specific actor context tied to a datastore use the one provided in the DistributedDataStore
- private final ActorUtils actorUtils;
- private final ShardingServiceAddressResolver resolver;
- private final DistributedDataStoreInterface distributedConfigDatastore;
- private final DistributedDataStoreInterface distributedOperDatastore;
- private final int lookupTaskMaxRetries;
-
- private final Map<DOMDataTreeIdentifier, ActorProducerRegistration> idToProducer = new HashMap<>();
-
- ShardedDataTreeActor(final ShardedDataTreeActorCreator builder) {
- LOG.debug("Creating ShardedDataTreeActor on {}", builder.getClusterWrapper().getCurrentMemberName());
-
- shardingService = builder.getShardingService();
- actorSystem = builder.getActorSystem();
- clusterWrapper = builder.getClusterWrapper();
- distributedConfigDatastore = builder.getDistributedConfigDatastore();
- distributedOperDatastore = builder.getDistributedOperDatastore();
- lookupTaskMaxRetries = builder.getLookupTaskMaxRetries();
- actorUtils = distributedConfigDatastore.getActorUtils();
- resolver = new ShardingServiceAddressResolver(
- DistributedShardedDOMDataTree.ACTOR_ID, clusterWrapper.getCurrentMemberName());
-
- clusterWrapper.subscribeToMemberEvents(self());
- }
-
- @Override
- public void preStart() {
- }
-
- @Override
- protected void handleRecover(final Object message) {
- LOG.debug("Received a recover message {}", message);
- }
-
- @Override
- protected void handleCommand(final Object message) {
- LOG.debug("{} : Received {}", clusterWrapper.getCurrentMemberName(), message);
- if (message instanceof ClusterEvent.MemberUp) {
- memberUp((ClusterEvent.MemberUp) message);
- } else if (message instanceof ClusterEvent.MemberWeaklyUp) {
- memberWeaklyUp((ClusterEvent.MemberWeaklyUp) 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 ProducerCreated) {
- onProducerCreated((ProducerCreated) message);
- } else if (message instanceof NotifyProducerCreated) {
- onNotifyProducerCreated((NotifyProducerCreated) message);
- } else if (message instanceof ProducerRemoved) {
- onProducerRemoved((ProducerRemoved) message);
- } else if (message instanceof NotifyProducerRemoved) {
- onNotifyProducerRemoved((NotifyProducerRemoved) message);
- } else if (message instanceof PrefixShardCreated) {
- onPrefixShardCreated((PrefixShardCreated) message);
- } else if (message instanceof LookupPrefixShard) {
- onLookupPrefixShard((LookupPrefixShard) message);
- } else if (message instanceof PrefixShardRemovalLookup) {
- onPrefixShardRemovalLookup((PrefixShardRemovalLookup) message);
- } else if (message instanceof PrefixShardRemoved) {
- onPrefixShardRemoved((PrefixShardRemoved) message);
- } else if (message instanceof StartConfigShardLookup) {
- onStartConfigShardLookup((StartConfigShardLookup) message);
- }
- }
-
- @Override
- public String persistenceId() {
- return PERSISTENCE_ID;
- }
-
- private void memberUp(final MemberUp message) {
- final MemberName memberName = memberToName(message.member());
-
- LOG.info("{}: Received MemberUp: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- resolver.addPeerAddress(memberName, message.member().address());
- }
-
- private void memberWeaklyUp(final MemberWeaklyUp message) {
- final MemberName memberName = memberToName(message.member());
-
- LOG.info("{}: Received MemberWeaklyUp: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- resolver.addPeerAddress(memberName, message.member().address());
- }
-
- private void memberExited(final MemberExited message) {
- final MemberName memberName = memberToName(message.member());
-
- LOG.info("{}: Received MemberExited: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- resolver.removePeerAddress(memberName);
- }
-
- private void memberRemoved(final MemberRemoved message) {
- final MemberName memberName = memberToName(message.member());
-
- LOG.info("{}: Received MemberRemoved: memberName: {}, address: {}", persistenceId(), memberName,
- message.member().address());
-
- resolver.removePeerAddress(memberName);
- }
-
- private void memberUnreachable(final UnreachableMember message) {
- final MemberName memberName = memberToName(message.member());
- LOG.debug("Received UnreachableMember: memberName {}, address: {}", memberName, message.member().address());
-
- resolver.removePeerAddress(memberName);
- }
-
- private void memberReachable(final ReachableMember message) {
- final MemberName memberName = memberToName(message.member());
- LOG.debug("Received ReachableMember: memberName {}, address: {}", memberName, message.member().address());
-
- resolver.addPeerAddress(memberName, message.member().address());
- }
-
- private void onProducerCreated(final ProducerCreated message) {
- LOG.debug("Received ProducerCreated: {}", message);
-
- // fastpath if we have no peers
- if (resolver.getShardingServicePeerActorAddresses().isEmpty()) {
- getSender().tell(new Status.Success(null), ActorRef.noSender());
- }
-
- final ActorRef sender = getSender();
- final Collection<DOMDataTreeIdentifier> subtrees = message.getSubtrees();
-
- final List<CompletableFuture<Object>> futures = new ArrayList<>();
-
- for (final String address : resolver.getShardingServicePeerActorAddresses()) {
- final ActorSelection actorSelection = actorSystem.actorSelection(address);
- futures.add(
- FutureConverters.toJava(
- actorUtils.executeOperationAsync(
- actorSelection, new NotifyProducerCreated(subtrees), DEFAULT_ASK_TIMEOUT))
- .toCompletableFuture());
- }
-
- final CompletableFuture<Void> combinedFuture = CompletableFuture.allOf(
- futures.toArray(new CompletableFuture[futures.size()]));
-
- combinedFuture
- .thenRun(() -> sender.tell(new Success(null), ActorRef.noSender()))
- .exceptionally(throwable -> {
- sender.tell(new Status.Failure(throwable), self());
- return null;
- });
- }
-
- private void onNotifyProducerCreated(final NotifyProducerCreated message) {
- LOG.debug("Received NotifyProducerCreated: {}", message);
-
- final Collection<DOMDataTreeIdentifier> subtrees = message.getSubtrees();
-
- try {
- final ActorProducerRegistration registration =
- new ActorProducerRegistration(shardingService.localCreateProducer(subtrees), subtrees);
- subtrees.forEach(id -> idToProducer.put(id, registration));
- sender().tell(new Status.Success(null), self());
- } catch (final IllegalArgumentException e) {
- sender().tell(new Status.Failure(e), getSelf());
- }
- }
-
- private void onProducerRemoved(final ProducerRemoved message) {
- LOG.debug("Received ProducerRemoved: {}", message);
-
- final List<CompletableFuture<Object>> futures = new ArrayList<>();
-
- for (final String address : resolver.getShardingServicePeerActorAddresses()) {
- final ActorSelection selection = actorSystem.actorSelection(address);
-
- futures.add(FutureConverters.toJava(
- actorUtils.executeOperationAsync(selection, new NotifyProducerRemoved(message.getSubtrees())))
- .toCompletableFuture());
- }
-
- final CompletableFuture<Void> combinedFuture = CompletableFuture.allOf(
- futures.toArray(new CompletableFuture[futures.size()]));
-
- final ActorRef respondTo = getSender();
-
- combinedFuture
- .thenRun(() -> respondTo.tell(new Status.Success(null), self()))
- .exceptionally(e -> {
- respondTo.tell(new Status.Failure(null), self());
- return null;
- });
-
- }
-
- private void onNotifyProducerRemoved(final NotifyProducerRemoved message) {
- LOG.debug("Received NotifyProducerRemoved: {}", message);
-
- final ActorProducerRegistration registration = idToProducer.remove(message.getSubtrees().iterator().next());
- if (registration == null) {
- LOG.warn("The notification contained a path on which no producer is registered, throwing away");
- getSender().tell(new Status.Success(null), ActorRef.noSender());
- return;
- }
-
- try {
- registration.close();
- getSender().tell(new Status.Success(null), ActorRef.noSender());
- } catch (final DOMDataTreeProducerException e) {
- LOG.error("Unable to close producer", e);
- getSender().tell(new Status.Failure(e), ActorRef.noSender());
- }
- }
-
- @SuppressWarnings("checkstyle:IllegalCatch")
- private void onLookupPrefixShard(final LookupPrefixShard message) {
- LOG.debug("Member: {}, Received LookupPrefixShard: {}", clusterWrapper.getCurrentMemberName(), message);
-
- final DOMDataTreeIdentifier prefix = message.getPrefix();
-
- final ActorUtils utils = prefix.getDatastoreType() == LogicalDatastoreType.CONFIGURATION
- ? distributedConfigDatastore.getActorUtils() : distributedOperDatastore.getActorUtils();
-
- // schedule a notification task for the reply
- actorSystem.scheduler().scheduleOnce(SHARD_LOOKUP_TASK_INTERVAL,
- new ShardCreationLookupTask(actorSystem, getSender(), clusterWrapper,
- utils, shardingService, prefix, lookupTaskMaxRetries), actorSystem.dispatcher());
- }
-
- private void onPrefixShardCreated(final PrefixShardCreated message) {
- LOG.debug("Member: {}, Received PrefixShardCreated: {}", clusterWrapper.getCurrentMemberName(), message);
-
- final PrefixShardConfiguration config = message.getConfiguration();
-
- shardingService.resolveShardAdditions(Collections.singleton(config.getPrefix()));
- }
-
- private void onPrefixShardRemovalLookup(final PrefixShardRemovalLookup message) {
- LOG.debug("Member: {}, Received PrefixShardRemovalLookup: {}", clusterWrapper.getCurrentMemberName(), message);
-
- final ShardRemovalLookupTask removalTask =
- new ShardRemovalLookupTask(actorSystem, getSender(),
- actorUtils, message.getPrefix(), lookupTaskMaxRetries);
-
- actorSystem.scheduler().scheduleOnce(SHARD_LOOKUP_TASK_INTERVAL, removalTask, actorSystem.dispatcher());
- }
-
- private void onPrefixShardRemoved(final PrefixShardRemoved message) {
- LOG.debug("Received PrefixShardRemoved: {}", message);
-
- shardingService.resolveShardRemovals(Collections.singleton(message.getPrefix()));
- }
-
- private void onStartConfigShardLookup(final StartConfigShardLookup message) {
- LOG.debug("Received StartConfigShardLookup: {}", message);
-
- final ActorUtils context =
- message.getType().equals(LogicalDatastoreType.CONFIGURATION)
- ? distributedConfigDatastore.getActorUtils() : distributedOperDatastore.getActorUtils();
-
- // schedule a notification task for the reply
- actorSystem.scheduler().scheduleOnce(SHARD_LOOKUP_TASK_INTERVAL,
- new ConfigShardLookupTask(
- actorSystem, getSender(), context, message, lookupTaskMaxRetries),
- actorSystem.dispatcher());
- }
-
- private static MemberName memberToName(final Member member) {
- return MemberName.forName(member.roles().iterator().next());
- }
-
- private class ActorProducerRegistration {
-
- private final DOMDataTreeProducer producer;
- private final Collection<DOMDataTreeIdentifier> subtrees;
-
- ActorProducerRegistration(final DOMDataTreeProducer producer,
- final Collection<DOMDataTreeIdentifier> subtrees) {
- this.producer = producer;
- this.subtrees = subtrees;
- }
-
- void close() throws DOMDataTreeProducerException {
- producer.close();
- subtrees.forEach(idToProducer::remove);
- }
- }
-
- private static class ShardFrontendRegistration extends
- AbstractObjectRegistration<ListenerRegistration<DistributedShardFrontend>> {
-
- private final ActorRef clientActor;
- private final ListenerRegistration<DistributedShardFrontend> shardRegistration;
-
- ShardFrontendRegistration(final ActorRef clientActor,
- final ListenerRegistration<DistributedShardFrontend> shardRegistration) {
- super(shardRegistration);
- this.clientActor = clientActor;
- this.shardRegistration = shardRegistration;
- }
-
- @Override
- protected void removeRegistration() {
- shardRegistration.close();
- clientActor.tell(PoisonPill.getInstance(), ActorRef.noSender());
- }
- }
-
- /**
- * Handles the lookup step of cds shard creation once the configuration is updated.
- */
- private static class ShardCreationLookupTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final ClusterWrapper clusterWrapper;
- private final ActorUtils context;
- private final DistributedShardedDOMDataTree shardingService;
- private final DOMDataTreeIdentifier toLookup;
- private final int lookupMaxRetries;
-
- ShardCreationLookupTask(final ActorSystem system,
- final ActorRef replyTo,
- final ClusterWrapper clusterWrapper,
- final ActorUtils context,
- final DistributedShardedDOMDataTree shardingService,
- final DOMDataTreeIdentifier toLookup,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.clusterWrapper = clusterWrapper;
- this.context = context;
- this.shardingService = shardingService;
- this.toLookup = toLookup;
- this.lookupMaxRetries = lookupMaxRetries;
- }
-
- @Override
- public void run() {
- final Future<ActorRef> localShardFuture =
- context.findLocalShardAsync(ClusterUtils.getCleanShardName(toLookup.getRootIdentifier()));
-
- localShardFuture.onComplete(new OnComplete<ActorRef>() {
- @Override
- public void onComplete(final Throwable throwable, final ActorRef actorRef) {
- if (throwable != null) {
- tryReschedule(throwable);
- } else {
- LOG.debug("Local backend for shard[{}] lookup successful, starting leader lookup..", toLookup);
-
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL,
- new ShardLeaderLookupTask(system, replyTo, context, clusterWrapper, actorRef,
- shardingService, toLookup, lookupMaxRetries),
- system.dispatcher());
- }
- }
- }, system.dispatcher());
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("Local backend for shard[{}] not found, try: {}, rescheduling..", toLookup, retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, ShardCreationLookupTask.this, system.dispatcher());
- }
- }
-
- /**
- * Handles the readiness step by waiting for a leader of the created shard.
- */
- private static class ShardLeaderLookupTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final ActorUtils context;
- private final ClusterWrapper clusterWrapper;
- private final ActorRef shard;
- private final DistributedShardedDOMDataTree shardingService;
- private final DOMDataTreeIdentifier toLookup;
- private final int lookupMaxRetries;
-
- ShardLeaderLookupTask(final ActorSystem system,
- final ActorRef replyTo,
- final ActorUtils context,
- final ClusterWrapper clusterWrapper,
- final ActorRef shard,
- final DistributedShardedDOMDataTree shardingService,
- final DOMDataTreeIdentifier toLookup,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.context = context;
- this.clusterWrapper = clusterWrapper;
- this.shard = shard;
- this.shardingService = shardingService;
- this.toLookup = toLookup;
- this.lookupMaxRetries = lookupMaxRetries;
- }
-
- @Override
- public void run() {
-
- final Future<Object> ask = Patterns.ask(shard, FindLeader.INSTANCE, context.getOperationTimeout());
-
- ask.onComplete(new OnComplete<>() {
- @Override
- public void onComplete(final Throwable throwable, final Object findLeaderReply) {
- if (throwable != null) {
- tryReschedule(throwable);
- } else {
- final FindLeaderReply findLeader = (FindLeaderReply) findLeaderReply;
- final Optional<String> leaderActor = findLeader.getLeaderActor();
- if (leaderActor.isPresent()) {
- // leader is found, backend seems ready, check if the frontend is ready
- LOG.debug("{} - Leader for shard[{}] backend ready, starting frontend lookup..",
- clusterWrapper.getCurrentMemberName(), toLookup);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL,
- new FrontendLookupTask(
- system, replyTo, shardingService, toLookup, lookupMaxRetries),
- system.dispatcher());
- } else {
- tryReschedule(null);
- }
- }
- }
- }, system.dispatcher());
-
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("{} - Leader for shard[{}] backend not found on try: {}, retrying..",
- clusterWrapper.getCurrentMemberName(), toLookup, retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, ShardLeaderLookupTask.this, system.dispatcher());
- }
- }
-
- /**
- * After backend is ready this handles the last step - checking if we have a frontend shard for the backend,
- * once this completes(which should be ready by the time the backend is created, this is just a sanity check in
- * case they race), the future for the cds shard creation is completed and the shard is ready for use.
- */
- private static final class FrontendLookupTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final DistributedShardedDOMDataTree shardingService;
- private final DOMDataTreeIdentifier toLookup;
-
- FrontendLookupTask(final ActorSystem system,
- final ActorRef replyTo,
- final DistributedShardedDOMDataTree shardingService,
- final DOMDataTreeIdentifier toLookup,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.shardingService = shardingService;
- this.toLookup = toLookup;
- }
-
- @Override
- public void run() {
- final DOMDataTreePrefixTableEntry<DOMDataTreeShardRegistration<DOMDataTreeShard>> entry =
- shardingService.lookupShardFrontend(toLookup);
-
- if (entry != null && tableEntryIdCheck(entry, toLookup) && entry.getValue() != null) {
- replyTo.tell(new Success(null), ActorRef.noSender());
- } else {
- tryReschedule(null);
- }
- }
-
- private boolean tableEntryIdCheck(final DOMDataTreePrefixTableEntry<?> entry,
- final DOMDataTreeIdentifier prefix) {
- if (entry == null) {
- return false;
- }
-
- if (YangInstanceIdentifier.empty().equals(prefix.getRootIdentifier())) {
- return true;
- }
-
- if (entry.getIdentifier().equals(toLookup.getRootIdentifier().getLastPathArgument())) {
- return true;
- }
-
- return false;
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("Frontend for shard[{}] not found on try: {}, retrying..", toLookup, retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, FrontendLookupTask.this, system.dispatcher());
- }
- }
-
- /**
- * Task that is run once a cds shard registration is closed and completes once the backend shard is removed from the
- * configuration.
- */
- private static class ShardRemovalLookupTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final ActorUtils context;
- private final DOMDataTreeIdentifier toLookup;
-
- ShardRemovalLookupTask(final ActorSystem system,
- final ActorRef replyTo,
- final ActorUtils context,
- final DOMDataTreeIdentifier toLookup,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.context = context;
- this.toLookup = toLookup;
- }
-
- @Override
- public void run() {
- final Future<ActorRef> localShardFuture =
- context.findLocalShardAsync(ClusterUtils.getCleanShardName(toLookup.getRootIdentifier()));
-
- localShardFuture.onComplete(new OnComplete<ActorRef>() {
- @Override
- public void onComplete(final Throwable throwable, final ActorRef actorRef) {
- if (throwable != null) {
- //TODO Shouldn't we check why findLocalShard failed?
- LOG.debug("Backend shard[{}] removal lookup successful notifying the registration future",
- toLookup);
- replyTo.tell(new Success(null), ActorRef.noSender());
- } else {
- tryReschedule(null);
- }
- }
- }, system.dispatcher());
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("Backend shard[{}] removal lookup failed, shard is still present, try: {}, rescheduling..",
- toLookup, retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, ShardRemovalLookupTask.this, system.dispatcher());
- }
- }
-
- /**
- * Task for handling the lookup of the backend for the configuration shard.
- */
- private static class ConfigShardLookupTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final ActorUtils context;
-
- ConfigShardLookupTask(final ActorSystem system,
- final ActorRef replyTo,
- final ActorUtils context,
- final StartConfigShardLookup message,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.context = context;
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("Local backend for prefix configuration shard not found, try: {}, rescheduling..", retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, ConfigShardLookupTask.this, system.dispatcher());
- }
-
- @Override
- public void run() {
- final Optional<ActorRef> localShard =
- context.findLocalShard(ClusterUtils.PREFIX_CONFIG_SHARD_ID);
-
- if (!localShard.isPresent()) {
- tryReschedule(null);
- } else {
- LOG.debug("Local backend for prefix configuration shard lookup successful");
- replyTo.tell(new Status.Success(null), ActorRef.noSender());
- }
- }
- }
-
- /**
- * Task for handling the readiness state of the config shard. Reports success once the leader is elected.
- */
- private static class ConfigShardReadinessTask extends LookupTask {
-
- private final ActorSystem system;
- private final ActorRef replyTo;
- private final ActorUtils context;
- private final ClusterWrapper clusterWrapper;
- private final ActorRef shard;
-
- ConfigShardReadinessTask(final ActorSystem system,
- final ActorRef replyTo,
- final ActorUtils context,
- final ClusterWrapper clusterWrapper,
- final ActorRef shard,
- final int lookupMaxRetries) {
- super(replyTo, lookupMaxRetries);
- this.system = system;
- this.replyTo = replyTo;
- this.context = context;
- this.clusterWrapper = clusterWrapper;
- this.shard = shard;
- }
-
- @Override
- void reschedule(final int retries) {
- LOG.debug("{} - Leader for config shard not found on try: {}, retrying..",
- clusterWrapper.getCurrentMemberName(), retries);
- system.scheduler().scheduleOnce(
- SHARD_LOOKUP_TASK_INTERVAL, ConfigShardReadinessTask.this, system.dispatcher());
- }
-
- @Override
- public void run() {
- final Future<Object> ask = Patterns.ask(shard, FindLeader.INSTANCE, context.getOperationTimeout());
-
- ask.onComplete(new OnComplete<>() {
- @Override
- public void onComplete(final Throwable throwable, final Object findLeaderReply) {
- if (throwable != null) {
- tryReschedule(throwable);
- } else {
- final FindLeaderReply findLeader = (FindLeaderReply) findLeaderReply;
- final Optional<String> leaderActor = findLeader.getLeaderActor();
- if (leaderActor.isPresent()) {
- // leader is found, backend seems ready, check if the frontend is ready
- LOG.debug("{} - Leader for config shard is ready. Ending lookup.",
- clusterWrapper.getCurrentMemberName());
- replyTo.tell(new Status.Success(null), ActorRef.noSender());
- } else {
- tryReschedule(null);
- }
- }
- }
- }, system.dispatcher());
- }
- }
-
- public static class ShardedDataTreeActorCreator {
-
- private DistributedShardedDOMDataTree shardingService;
- private DistributedDataStoreInterface distributedConfigDatastore;
- private DistributedDataStoreInterface distributedOperDatastore;
- private ActorSystem actorSystem;
- private ClusterWrapper cluster;
- private int maxRetries;
-
- public DistributedShardedDOMDataTree getShardingService() {
- return shardingService;
- }
-
- public ShardedDataTreeActorCreator setShardingService(final DistributedShardedDOMDataTree shardingService) {
- this.shardingService = shardingService;
- return this;
- }
-
- public ActorSystem getActorSystem() {
- return actorSystem;
- }
-
- public ShardedDataTreeActorCreator setActorSystem(final ActorSystem actorSystem) {
- this.actorSystem = actorSystem;
- return this;
- }
-
- public ShardedDataTreeActorCreator setClusterWrapper(final ClusterWrapper clusterWrapper) {
- this.cluster = clusterWrapper;
- return this;
- }
-
- public ClusterWrapper getClusterWrapper() {
- return cluster;
- }
-
- public DistributedDataStoreInterface getDistributedConfigDatastore() {
- return distributedConfigDatastore;
- }
-
- public ShardedDataTreeActorCreator setDistributedConfigDatastore(
- final DistributedDataStoreInterface distributedConfigDatastore) {
- this.distributedConfigDatastore = distributedConfigDatastore;
- return this;
- }
-
- public DistributedDataStoreInterface getDistributedOperDatastore() {
- return distributedOperDatastore;
- }
-
- public ShardedDataTreeActorCreator setDistributedOperDatastore(
- final DistributedDataStoreInterface distributedOperDatastore) {
- this.distributedOperDatastore = distributedOperDatastore;
- return this;
- }
-
- public ShardedDataTreeActorCreator setLookupTaskMaxRetries(final int newMaxRetries) {
- this.maxRetries = newMaxRetries;
- return this;
- }
-
- public int getLookupTaskMaxRetries() {
- return maxRetries;
- }
-
- private void verify() {
- requireNonNull(shardingService);
- requireNonNull(actorSystem);
- requireNonNull(cluster);
- requireNonNull(distributedConfigDatastore);
- requireNonNull(distributedOperDatastore);
- }
-
- public Props props() {
- verify();
- return Props.create(ShardedDataTreeActor.class, this);
- }
- }
-}
Code Review / controller.git / commitdiff