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