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 java.util.concurrent.TimeUnit;
  12
  13 import akka.actor.ActorRef;
  14 import akka.actor.ActorSystem;
  15
  16 import com.google.common.base.Preconditions;
  17
  18 import org.opendaylight.controller.cluster.datastore.identifiers.ShardManagerIdentifier;
  19 import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
  20 import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply;
  21 import org.opendaylight.controller.cluster.datastore.shardstrategy.ShardStrategyFactory;
  22 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
  23 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  24 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  25 import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStoreConfigProperties;
  26 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
  27 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  28 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
  29 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  30 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  33 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  34 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  35 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 import scala.concurrent.duration.Duration;
  40
  41 /**
  42  *
  43  */
  44 public class DistributedDataStore implements DOMStore, SchemaContextListener, AutoCloseable {
  45
  46     private static final Logger LOG = LoggerFactory.getLogger(DistributedDataStore.class);
  47
  48     private final ActorContext actorContext;
  49     private final DatastoreContext datastoreContext;
  50
  51     public DistributedDataStore(ActorSystem actorSystem, String type, ClusterWrapper cluster,
  52             Configuration configuration, DistributedDataStoreProperties dataStoreProperties) {
  53         Preconditions.checkNotNull(actorSystem, "actorSystem should not be null");
  54         Preconditions.checkNotNull(type, "type should not be null");
  55         Preconditions.checkNotNull(cluster, "cluster should not be null");
  56         Preconditions.checkNotNull(configuration, "configuration should not be null");
  57
  58
  59         String shardManagerId = ShardManagerIdentifier.builder().type(type).build().toString();
  60
  61         LOG.info("Creating ShardManager : {}", shardManagerId);
  62
  63         datastoreContext = new DatastoreContext(InMemoryDOMDataStoreConfigProperties.create(
  64                 dataStoreProperties.getMaxShardDataChangeExecutorPoolSize(),
  65                 dataStoreProperties.getMaxShardDataChangeExecutorQueueSize(),
  66                 dataStoreProperties.getMaxShardDataChangeListenerQueueSize()),
  67                 Duration.create(dataStoreProperties.getShardTransactionIdleTimeoutInMinutes(),
  68                         TimeUnit.MINUTES));
  69
  70         actorContext
  71                 = new ActorContext(
  72                     actorSystem, actorSystem.actorOf(
  73                         ShardManager.props(type, cluster, configuration, datastoreContext).
  74                             withMailbox(ActorContext.MAILBOX), shardManagerId ), cluster, configuration);
  75     }
  76
  77     public DistributedDataStore(ActorContext actorContext) {
  78         this.actorContext = Preconditions.checkNotNull(actorContext, "actorContext should not be null");
  79         this.datastoreContext = new DatastoreContext();
  80     }
  81
  82
  83     @SuppressWarnings("unchecked")
  84     @Override
  85     public <L extends AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  86                                               ListenerRegistration<L> registerChangeListener(
  87         YangInstanceIdentifier path, L listener,
  88         AsyncDataBroker.DataChangeScope scope) {
  89
  90         Preconditions.checkNotNull(path, "path should not be null");
  91         Preconditions.checkNotNull(listener, "listener should not be null");
  92
  93         LOG.debug("Registering listener: {} for path: {} scope: {}", listener, path, scope);
  94
  95         ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(
  96             DataChangeListener.props(listener ));
  97
  98         String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
  99
 100         Object result = actorContext.executeLocalShardOperation(shardName,
 101             new RegisterChangeListener(path, dataChangeListenerActor.path(), scope),
 102             ActorContext.ASK_DURATION);
 103
 104         if (result != null) {
 105             RegisterChangeListenerReply reply = (RegisterChangeListenerReply) result;
 106             return new DataChangeListenerRegistrationProxy(actorContext
 107                 .actorSelection(reply.getListenerRegistrationPath()), listener,
 108                 dataChangeListenerActor);
 109         }
 110
 111         LOG.debug(
 112             "No local shard for shardName {} was found so returning a noop registration",
 113             shardName);
 114
 115         return new NoOpDataChangeListenerRegistration(listener);
 116     }
 117
 118     @Override
 119     public DOMStoreTransactionChain createTransactionChain() {
 120         return new TransactionChainProxy(actorContext);
 121     }
 122
 123     @Override
 124     public DOMStoreReadTransaction newReadOnlyTransaction() {
 125         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_ONLY);
 126     }
 127
 128     @Override
 129     public DOMStoreWriteTransaction newWriteOnlyTransaction() {
 130         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.WRITE_ONLY);
 131     }
 132
 133     @Override
 134     public DOMStoreReadWriteTransaction newReadWriteTransaction() {
 135         return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_WRITE);
 136     }
 137
 138     @Override
 139     public void onGlobalContextUpdated(SchemaContext schemaContext) {
 140         actorContext.setSchemaContext(schemaContext);
 141     }
 142
 143     @Override
 144     public void close() throws Exception {
 145         actorContext.shutdown();
 146     }
 147 }