X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FShardManager.java;h=3dbac003b9d66b74520d431c2d7ebb45da488fbc;hp=a97c00f1d88227fb9d01c90ce38a80b8ccbb1e50;hb=bd8beb1bfee9f421ad8f2d07b1424b21038234a2;hpb=5a15471e74536f8fe6d62747b7b822655a17dd4e

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardManager.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardManager.java
index a97c00f1d8..3dbac003b9 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardManager.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardManager.java
@@ -17,13 +17,31 @@ import akka.actor.SupervisorStrategy;
 import akka.cluster.ClusterEvent;
 import akka.japi.Creator;
 import akka.japi.Function;
+import akka.japi.Procedure;
+import akka.persistence.RecoveryCompleted;
+import akka.persistence.RecoveryFailure;
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
-import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActorWithMetering;
-
+import com.google.common.base.Supplier;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Lists;
+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.List;
+import java.util.Map;
+import java.util.Set;
+import org.opendaylight.controller.cluster.DataPersistenceProvider;
+import org.opendaylight.controller.cluster.common.actor.AbstractUntypedPersistentActorWithMetering;
 import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
 import org.opendaylight.controller.cluster.datastore.identifiers.ShardManagerIdentifier;
 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.ActorNotInitialized;
 import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard;
 import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
 import org.opendaylight.controller.cluster.datastore.messages.LocalShardFound;
@@ -32,15 +50,12 @@ import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolve
 import org.opendaylight.controller.cluster.datastore.messages.PrimaryFound;
 import org.opendaylight.controller.cluster.datastore.messages.PrimaryNotFound;
 import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
-import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
+import org.opendaylight.yangtools.yang.model.api.ModuleIdentifier;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import scala.concurrent.duration.Duration;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 /**
  * The ShardManager has the following jobs,
  * <ul>
@@ -50,7 +65,9 @@ import java.util.Map;
  * <li> Monitor the cluster members and store their addresses
  * <ul>
  */
-public class ShardManager extends AbstractUntypedActorWithMetering {
+public class ShardManager extends AbstractUntypedPersistentActorWithMetering {
+
+    private final Logger LOG = LoggerFactory.getLogger(getClass());
 
     // Stores a mapping between a member name and the address of the member
     // Member names look like "member-1", "member-2" etc and are as specified
@@ -74,45 +91,52 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
 
     private final DatastoreContext datastoreContext;
 
+    private Collection<String> knownModules = Collections.emptySet();
+
+    private final DataPersistenceProvider dataPersistenceProvider;
+
     /**
-     * @param type defines the kind of data that goes into shards created by this shard manager. Examples of type would be
-     *             configuration or operational
      */
-    private ShardManager(String type, ClusterWrapper cluster, Configuration configuration,
+    protected ShardManager(ClusterWrapper cluster, Configuration configuration,
             DatastoreContext datastoreContext) {
 
-        this.type = Preconditions.checkNotNull(type, "type should not be null");
         this.cluster = Preconditions.checkNotNull(cluster, "cluster should not be null");
         this.configuration = Preconditions.checkNotNull(configuration, "configuration should not be null");
         this.datastoreContext = datastoreContext;
+        this.dataPersistenceProvider = createDataPersistenceProvider(datastoreContext.isPersistent());
+        this.type = datastoreContext.getDataStoreType();
 
         // Subscribe this actor to cluster member events
         cluster.subscribeToMemberEvents(getSelf());
 
-        //createLocalShards(null);
+        createLocalShards();
     }
 
-    public static Props props(final String type,
+    protected DataPersistenceProvider createDataPersistenceProvider(boolean persistent) {
+        return (persistent) ? new PersistentDataProvider() : new NonPersistentDataProvider();
+    }
+
+    public static Props props(
         final ClusterWrapper cluster,
         final Configuration configuration,
         final DatastoreContext datastoreContext) {
 
-        Preconditions.checkNotNull(type, "type should not be null");
         Preconditions.checkNotNull(cluster, "cluster should not be null");
         Preconditions.checkNotNull(configuration, "configuration should not be null");
 
-        return Props.create(new ShardManagerCreator(type, cluster, configuration, datastoreContext));
+        return Props.create(new ShardManagerCreator(cluster, configuration, datastoreContext));
     }
 
     @Override
-    public void handleReceive(Object message) throws Exception {
+    public void handleCommand(Object message) throws Exception {
         if (message.getClass().equals(FindPrimary.SERIALIZABLE_CLASS)) {
-            findPrimary(
-                FindPrimary.fromSerializable(message));
+            findPrimary(FindPrimary.fromSerializable(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.MemberRemoved) {
@@ -125,17 +149,92 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
 
     }
 
+    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 [{}]", shardName);
+        ShardInformation shardInformation = localShards.get(shardName);
+        if (shardInformation != null) {
+            shardInformation.setActorInitialized();
+        }
+    }
+
+    @Override
+    protected void handleRecover(Object message) throws Exception {
+        if(dataPersistenceProvider.isRecoveryApplicable()) {
+            if (message instanceof SchemaContextModules) {
+                SchemaContextModules msg = (SchemaContextModules) message;
+                knownModules = ImmutableSet.copyOf(msg.getModules());
+            } else if (message instanceof RecoveryFailure) {
+                RecoveryFailure failure = (RecoveryFailure) message;
+                LOG.error("Recovery failed", failure.cause());
+            } else if (message instanceof RecoveryCompleted) {
+                LOG.info("Recovery complete : {}", persistenceId());
+
+                // Delete all the messages from the akka journal except the last one
+                deleteMessages(lastSequenceNr() - 1);
+            }
+        } else {
+            if (message instanceof RecoveryCompleted) {
+                LOG.info("Recovery complete : {}", persistenceId());
+
+                // Delete all the messages from the akka journal
+                deleteMessages(lastSequenceNr());
+            }
+        }
+    }
+
     private void findLocalShard(FindLocalShard message) {
-        ShardInformation shardInformation =
-            localShards.get(message.getShardName());
+        final ShardInformation shardInformation = localShards.get(message.getShardName());
 
-        if(shardInformation != null){
-            getSender().tell(new LocalShardFound(shardInformation.getActor()), getSelf());
+        if(shardInformation == null){
+            getSender().tell(new LocalShardNotFound(message.getShardName()), getSelf());
             return;
         }
 
-        getSender().tell(new LocalShardNotFound(message.getShardName()),
-            getSelf());
+        sendResponse(shardInformation, message.isWaitUntilInitialized(), new Supplier<Object>() {
+            @Override
+            public Object get() {
+                return new LocalShardFound(shardInformation.getActor());
+            }
+        });
+    }
+
+    private void sendResponse(ShardInformation shardInformation, boolean waitUntilInitialized,
+            final Supplier<Object> messageSupplier) {
+        if (!shardInformation.isShardInitialized()) {
+            if(waitUntilInitialized) {
+                final ActorRef sender = getSender();
+                final ActorRef self = self();
+                shardInformation.addRunnableOnInitialized(new Runnable() {
+                    @Override
+                    public void run() {
+                        sender.tell(messageSupplier.get(), self);
+                    }
+                });
+            } else {
+                getSender().tell(new ActorNotInitialized(), getSelf());
+            }
+
+            return;
+        }
+
+        getSender().tell(messageSupplier.get(), getSelf());
     }
 
     private void memberRemoved(ClusterEvent.MemberRemoved message) {
@@ -145,7 +244,7 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
     private void memberUp(ClusterEvent.MemberUp message) {
         String memberName = message.member().roles().head();
 
-        memberNameToAddress.put(memberName , message.member().address());
+        memberNameToAddress.put(memberName, message.member().address());
 
         for(ShardInformation info : localShards.values()){
             String shardName = info.getShardName();
@@ -159,41 +258,72 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
      *
      * @param message
      */
-    private void updateSchemaContext(Object message) {
-        SchemaContext schemaContext = ((UpdateSchemaContext) message).getSchemaContext();
+    private void updateSchemaContext(final Object message) {
+        final SchemaContext schemaContext = ((UpdateSchemaContext) message).getSchemaContext();
+
+        Set<ModuleIdentifier> allModuleIdentifiers = schemaContext.getAllModuleIdentifiers();
+        Set<String> newModules = new HashSet<>(128);
+
+        for(ModuleIdentifier moduleIdentifier : allModuleIdentifiers){
+            String s = moduleIdentifier.getNamespace().toString();
+            newModules.add(s);
+        }
+
+        if(newModules.containsAll(knownModules)) {
+
+            LOG.info("New SchemaContext has a super set of current knownModules - persisting info");
 
-        if(localShards.size() == 0){
-            createLocalShards(schemaContext);
+            knownModules = ImmutableSet.copyOf(newModules);
+
+            dataPersistenceProvider.persist(new SchemaContextModules(newModules), new Procedure<SchemaContextModules>() {
+
+                @Override
+                public void apply(SchemaContextModules param) throws Exception {
+                    LOG.info("Sending new SchemaContext to Shards");
+                    for (ShardInformation info : localShards.values()) {
+                        if (info.getActor() == null) {
+                            info.setActor(getContext().actorOf(Shard.props(info.getShardId(),
+                                            info.getPeerAddresses(), datastoreContext, schemaContext),
+                                    info.getShardId().toString()));
+                        } else {
+                            info.getActor().tell(message, getSelf());
+                        }
+                    }
+                }
+
+            });
         } else {
-            for (ShardInformation info : localShards.values()) {
-                info.getActor().tell(message, getSelf());
-            }
+            LOG.info("Rejecting schema context update because it is not a super set of previously known modules");
         }
+
     }
 
     private void findPrimary(FindPrimary message) {
         String shardName = message.getShardName();
 
         // First see if the there is a local replica for the shard
-        ShardInformation info = localShards.get(shardName);
-        if(info != null) {
-            ActorPath shardPath = info.getActorPath();
-            if (shardPath != null) {
-                getSender()
-                    .tell(
-                        new PrimaryFound(shardPath.toString()).toSerializable(),
-                        getSelf());
-                return;
-            }
+        final ShardInformation info = localShards.get(shardName);
+        if (info != null) {
+            sendResponse(info, message.isWaitUntilInitialized(), new Supplier<Object>() {
+                @Override
+                public Object get() {
+                    return new PrimaryFound(info.getActorPath().toString()).toSerializable();
+                }
+            });
+
+            return;
         }
 
-        List<String> members =
-            configuration.getMembersFromShardName(shardName);
+        List<String> members = configuration.getMembersFromShardName(shardName);
 
         if(cluster.getCurrentMemberName() != null) {
             members.remove(cluster.getCurrentMemberName());
         }
 
+        /**
+         * FIXME: Instead of sending remote shard actor path back to sender,
+         * forward FindPrimary message to remote shard manager
+         */
         // There is no way for us to figure out the primary (for now) so assume
         // that one of the remote nodes is a primary
         for(String memberName : members) {
@@ -239,7 +369,7 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
      * runs
      *
      */
-    private void createLocalShards(SchemaContext schemaContext) {
+    private void createLocalShards() {
         String memberName = this.cluster.getCurrentMemberName();
         List<String> memberShardNames =
             this.configuration.getMemberShardNames(memberName);
@@ -248,11 +378,8 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
         for(String shardName : memberShardNames){
             ShardIdentifier shardId = getShardIdentifier(memberName, shardName);
             Map<ShardIdentifier, String> peerAddresses = getPeerAddresses(shardName);
-            ActorRef actor = getContext()
-                .actorOf(Shard.props(shardId, peerAddresses, datastoreContext, schemaContext).
-                    withMailbox(ActorContext.MAILBOX), shardId.toString());
             localShardActorNames.add(shardId.toString());
-            localShards.put(shardName, new ShardInformation(shardName, actor, peerAddresses));
+            localShards.put(shardName, new ShardInformation(shardName, shardId, peerAddresses));
         }
 
         mBean = ShardManagerInfo.createShardManagerMBean("shard-manager-" + this.type,
@@ -293,12 +420,7 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
             new Function<Throwable, SupervisorStrategy.Directive>() {
                 @Override
                 public SupervisorStrategy.Directive apply(Throwable t) {
-                    StringBuilder sb = new StringBuilder();
-                    for(StackTraceElement element : t.getStackTrace()) {
-                       sb.append("\n\tat ")
-                         .append(element.toString());
-                    }
-                    LOG.warning("Supervisor Strategy of resume applied {}",sb.toString());
+                    LOG.warn("Supervisor Strategy caught unexpected exception - resuming", t);
                     return SupervisorStrategy.resume();
                 }
             }
@@ -306,61 +428,110 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
 
     }
 
+    @Override
+    public String persistenceId() {
+        return "shard-manager-" + type;
+    }
+
+    @VisibleForTesting
+    Collection<String> getKnownModules() {
+        return knownModules;
+    }
+
+    @VisibleForTesting
+    DataPersistenceProvider getDataPersistenceProvider() {
+        return dataPersistenceProvider;
+    }
+
     private class ShardInformation {
+        private final ShardIdentifier shardId;
         private final String shardName;
-        private final ActorRef actor;
-        private final ActorPath actorPath;
+        private ActorRef actor;
+        private ActorPath actorPath;
         private final Map<ShardIdentifier, String> peerAddresses;
 
-        private ShardInformation(String shardName, ActorRef actor,
-            Map<ShardIdentifier, String> peerAddresses) {
+        // flag that determines if the actor is ready for business
+        private boolean actorInitialized = false;
+
+        private final List<Runnable> runnablesOnInitialized = Lists.newArrayList();
+
+        private ShardInformation(String shardName, ShardIdentifier shardId,
+                Map<ShardIdentifier, String> peerAddresses) {
             this.shardName = shardName;
-            this.actor = actor;
-            this.actorPath = actor.path();
+            this.shardId = shardId;
             this.peerAddresses = peerAddresses;
         }
 
-        public String getShardName() {
+        String getShardName() {
             return shardName;
         }
 
-        public ActorRef getActor(){
+        ActorRef getActor(){
             return actor;
         }
 
-        public ActorPath getActorPath() {
+        ActorPath getActorPath() {
             return actorPath;
         }
 
-        public void updatePeerAddress(ShardIdentifier peerId, String peerAddress){
+        void setActor(ActorRef actor) {
+            this.actor = actor;
+            this.actorPath = actor.path();
+        }
+
+        ShardIdentifier getShardId() {
+            return shardId;
+        }
+
+        Map<ShardIdentifier, String> getPeerAddresses() {
+            return peerAddresses;
+        }
+
+        void updatePeerAddress(ShardIdentifier peerId, String peerAddress){
             LOG.info("updatePeerAddress for peer {} with address {}", peerId,
                 peerAddress);
             if(peerAddresses.containsKey(peerId)){
                 peerAddresses.put(peerId, peerAddress);
-                if(LOG.isDebugEnabled()) {
-                    LOG.debug(
-                        "Sending PeerAddressResolved for peer {} with address {} to {}",
-                        peerId, peerAddress, actor.path());
+
+                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), getSelf());
                 }
-                actor
-                    .tell(new PeerAddressResolved(peerId, peerAddress),
-                        getSelf());
+            }
+        }
 
+        boolean isShardInitialized() {
+            return getActor() != null && actorInitialized;
+        }
+
+        void setActorInitialized() {
+            this.actorInitialized = true;
+
+            for(Runnable runnable: runnablesOnInitialized) {
+                runnable.run();
             }
+
+            runnablesOnInitialized.clear();
+        }
+
+        void addRunnableOnInitialized(Runnable runnable) {
+            runnablesOnInitialized.add(runnable);
         }
     }
 
     private static class ShardManagerCreator implements Creator<ShardManager> {
         private static final long serialVersionUID = 1L;
 
-        final String type;
         final ClusterWrapper cluster;
         final Configuration configuration;
         final DatastoreContext datastoreContext;
 
-        ShardManagerCreator(String type, ClusterWrapper cluster,
+        ShardManagerCreator(ClusterWrapper cluster,
                 Configuration configuration, DatastoreContext datastoreContext) {
-            this.type = type;
             this.cluster = cluster;
             this.configuration = configuration;
             this.datastoreContext = datastoreContext;
@@ -368,7 +539,21 @@ public class ShardManager extends AbstractUntypedActorWithMetering {
 
         @Override
         public ShardManager create() throws Exception {
-            return new ShardManager(type, cluster, configuration, datastoreContext);
+            return new ShardManager(cluster, configuration, datastoreContext);
+        }
+    }
+
+    static class SchemaContextModules implements Serializable {
+        private static final long serialVersionUID = -8884620101025936590L;
+
+        private final Set<String> modules;
+
+        SchemaContextModules(Set<String> modules){
+            this.modules = modules;
+        }
+
+        public Set<String> getModules() {
+            return modules;
         }
     }
 }