opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DistributedDataStore.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.cluster.datastore;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.ActorSystem;
  13 import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
  14 import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply;
  15 import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
  16 import org.opendaylight.controller.cluster.datastore.shardstrategy.ShardStrategyFactory;
  17 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  20 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
  21 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  22 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
  23 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  24 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  25 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  26 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  28 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  29 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 import java.util.concurrent.ExecutorService;
  34 import java.util.concurrent.Executors;
  35
  36 /**
  37  *
  38  */
  39 public class DistributedDataStore implements DOMStore, SchemaContextListener, AutoCloseable {
  40
  41     private static final Logger
  42         LOG = LoggerFactory.getLogger(DistributedDataStore.class);
  43
  44
  45     private final String type;
  46     private final ActorContext actorContext;
  47
  48     private SchemaContext schemaContext;
  49
  50
  51
  52     /**
  53      * Executor used to run FutureTask's
  54      *
  55      * This is typically used when we need to make a request to an actor and
  56      * wait for it's response and the consumer needs to be provided a Future.
  57      *
  58      * FIXME : Make the thread pool configurable
  59      */
  60     private final ExecutorService executor =
  61         Executors.newFixedThreadPool(10);
  62
  63     public DistributedDataStore(ActorSystem actorSystem, String type, ClusterWrapper cluster, Configuration configuration) {
  64         this(new ActorContext(actorSystem, actorSystem.actorOf(ShardManager.props(type, cluster, configuration), "shardmanager-" + type), configuration), type);
  65     }
  66
  67     public DistributedDataStore(ActorContext actorContext, String type) {
  68         this.type = type;
  69         this.actorContext = actorContext;
  70     }
  71
  72
  73     @Override
  74     public <L extends AsyncDataChangeListener<InstanceIdentifier, NormalizedNode<?, ?>>> ListenerRegistration<L> registerChangeListener(
  75         InstanceIdentifier path, L listener,
  76         AsyncDataBroker.DataChangeScope scope) {
  77
  78         ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(
  79             DataChangeListener.props(listener));
  80
  81         String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
  82
  83         Object result = actorContext.executeShardOperation(shardName,
  84             new RegisterChangeListener(path, dataChangeListenerActor.path(),
  85                 AsyncDataBroker.DataChangeScope.BASE).toSerializable(),
  86             ActorContext.ASK_DURATION
  87         );
  88
  89         RegisterChangeListenerReply reply = RegisterChangeListenerReply.fromSerializable(actorContext.getActorSystem(),result);
  90         return new DataChangeListenerRegistrationProxy(actorContext.actorSelection(reply.getListenerRegistrationPath()), listener, dataChangeListenerActor);
  91     }
  92
  93
  94
  95     @Override
  96     public DOMStoreTransactionChain createTransactionChain() {
  97         return new TransactionChainProxy(actorContext, executor, schemaContext);
  98     }
  99
 100     @Override
 101     public DOMStoreReadTransaction newReadOnlyTransaction() {
 102         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_ONLY,
 103             executor, schemaContext);
 104     }
 105
 106     @Override
 107     public DOMStoreWriteTransaction newWriteOnlyTransaction() {
 108         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.WRITE_ONLY,
 109             executor, schemaContext);
 110     }
 111
 112     @Override
 113     public DOMStoreReadWriteTransaction newReadWriteTransaction() {
 114         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_WRITE,
 115             executor, schemaContext);
 116     }
 117
 118     @Override public void onGlobalContextUpdated(SchemaContext schemaContext) {
 119         this.schemaContext = schemaContext;
 120         actorContext.getShardManager().tell(
 121             new UpdateSchemaContext(schemaContext), null);
 122     }
 123
 124     @Override public void close() throws Exception {
 125         actorContext.shutdown();
 126
 127     }
 128 }