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.YangInstanceIdentifier;
  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
  65             .actorOf(ShardManager.props(type, cluster, configuration),
  66                 "shardmanager-" + type), cluster, configuration), type);
  67     }
  68
  69     public DistributedDataStore(ActorContext actorContext, String type) {
  70         this.type = type;
  71         this.actorContext = actorContext;
  72     }
  73
  74
  75     @Override
  76     public <L extends AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> ListenerRegistration<L> registerChangeListener(
  77         YangInstanceIdentifier path, L listener,
  78         AsyncDataBroker.DataChangeScope scope) {
  79
  80         ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(
  81             DataChangeListener.props(schemaContext,listener,path ));
  82
  83         String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
  84
  85         Object result = actorContext.executeShardOperation(shardName,
  86             new RegisterChangeListener(path, dataChangeListenerActor.path(),
  87                 scope).toSerializable(),
  88             ActorContext.ASK_DURATION
  89         );
  90
  91         RegisterChangeListenerReply reply = RegisterChangeListenerReply.fromSerializable(actorContext.getActorSystem(),result);
  92         return new DataChangeListenerRegistrationProxy(actorContext.actorSelection(reply.getListenerRegistrationPath()), listener, dataChangeListenerActor);
  93     }
  94
  95
  96
  97     @Override
  98     public DOMStoreTransactionChain createTransactionChain() {
  99         return new TransactionChainProxy(actorContext, executor, schemaContext);
 100     }
 101
 102     @Override
 103     public DOMStoreReadTransaction newReadOnlyTransaction() {
 104         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_ONLY,
 105             executor, schemaContext);
 106     }
 107
 108     @Override
 109     public DOMStoreWriteTransaction newWriteOnlyTransaction() {
 110         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.WRITE_ONLY,
 111             executor, schemaContext);
 112     }
 113
 114     @Override
 115     public DOMStoreReadWriteTransaction newReadWriteTransaction() {
 116         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_WRITE,
 117             executor, schemaContext);
 118     }
 119
 120     @Override public void onGlobalContextUpdated(SchemaContext schemaContext) {
 121         this.schemaContext = schemaContext;
 122         actorContext.getShardManager().tell(
 123             new UpdateSchemaContext(schemaContext), null);
 124     }
 125
 126     @Override public void close() throws Exception {
 127         actorContext.shutdown();
 128
 129     }
 130 }