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=4e2369d3758596bd1217670f8f3ec5a2438db36d;hp=f5e46852e3cab8be4c9799e9d00a472e051c9f9c;hb=1af23ad8e572896323ed5d1c723d977a16eb7e6d;hpb=63ef05ffdad1413ffb6882db9b662435390e1015
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 f5e46852e3..4e2369d375 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
@@ -1,11 +1,25 @@
+/*
+ * 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;
+import akka.actor.ActorPath;
+import akka.actor.ActorRef;
import akka.actor.Address;
+import akka.actor.Props;
import akka.actor.UntypedActor;
import akka.event.Logging;
import akka.event.LoggingAdapter;
+import akka.japi.Creator;
import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
+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 java.util.HashMap;
import java.util.List;
@@ -13,41 +27,77 @@ import java.util.Map;
/**
* The ShardManager has the following jobs,
- *
- * - Create all the local shard replicas that belong on this cluster member
- * - Find the primary replica for any given shard
- * - Engage in shard replica elections which decide which replica should be the primary
- *
- * Creation of Shard replicas
- * ==========================
- * When the ShardManager is constructed it reads the cluster configuration to find out which shard replicas
- * belong on this member. It finds out the name of the current cluster member from the Akka Clustering Service.
- *
- * Replica Elections
- * =================
- * The Shard Manager uses multiple cues to initiate election.
- * - When a member of the cluster dies
- * - When a local shard replica dies
- * - When a local shard replica comes alive
+ *
+ *
Create all the local shard replicas that belong on this cluster member
+ * Find the primary replica for any given shard
+ * Engage in shard replica elections which decide which replica should be the primary
+ *
+ *
+ * >Creation of Shard replicas
+ * When the ShardManager is constructed it reads the cluster configuration to find out which shard replicas
+ * belong on this member. It finds out the name of the current cluster member from the Akka Clustering Service.
+ *
+ *
+ * Replica Elections
+ *
+ *
+ * The Shard Manager uses multiple cues to initiate election.
+ *
When a member of the cluster dies
+ * When a local shard replica dies
+ * When a local shard replica comes alive
+ *
*/
public class ShardManager extends UntypedActor {
- // Stores a mapping between a shard name and the address of the current primary
- private final Map shardNameToPrimaryAddress = new HashMap<>();
+ // Stores a mapping between a shard name and the address of the current primary
+ private final Map shardNameToPrimaryAddress = new HashMap<>();
- // Stores a mapping between a member name and the address of the member
- private final Map memberNameToAddress = new HashMap<>();
+ // Stores a mapping between a member name and the address of the member
+ private final Map memberNameToAddress = new HashMap<>();
- // Stores a mapping between the shard name and all the members on which a replica of that shard are available
- private final Map> shardNameToMembers = new HashMap<>();
+ // Stores a mapping between the shard name and all the members on which a replica of that shard are available
+ private final Map> shardNameToMembers = new HashMap<>();
- LoggingAdapter log = Logging.getLogger(getContext().system(), this);
+ private final LoggingAdapter log = Logging.getLogger(getContext().system(), this);
- @Override
- public void onReceive(Object message) throws Exception {
- if(message instanceof FindPrimary ){
- FindPrimary msg = ((FindPrimary) message);
- getSender().tell(new PrimaryNotFound(msg.getShardName()), getSelf());
- }
+ private final ActorPath defaultShardPath;
+
+ /**
+ *
+ * @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){
+ ActorRef actor = getContext().actorOf(Shard.props(Shard.DEFAULT_NAME + "-" + type));
+ defaultShardPath = actor.path();
+ }
+
+ public static Props props(final String type){
+ return Props.create(new Creator(){
+
+ @Override
+ public ShardManager create() throws Exception {
+ return new ShardManager(type);
+ }
+ });
+ }
+
+ @Override
+ public void onReceive(Object message) throws Exception {
+ if (message instanceof FindPrimary) {
+ FindPrimary msg = ((FindPrimary) message);
+ String shardName = msg.getShardName();
+ if(Shard.DEFAULT_NAME.equals(shardName)){
+ getSender().tell(new PrimaryFound(defaultShardPath.toString()), getSelf());
+ } else {
+ getSender().tell(new PrimaryNotFound(shardName), getSelf());
+ }
+ } else if(message instanceof UpdateSchemaContext){
+ // FIXME : Notify all local shards of a context change
+ getContext().system().actorSelection(defaultShardPath).forward(message, getContext());
}
+ }
+
+
}