opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransactionChain.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.Props;
  13 import akka.japi.Creator;
  14 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
  15 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  16 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChain;
  17 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChainReply;
  18 import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
  19 import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
  20 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  21 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  22
  23 /**
  24  * The ShardTransactionChain Actor represents a remote TransactionChain
  25  */
  26 public class ShardTransactionChain extends AbstractUntypedActor {
  27
  28     private final DOMStoreTransactionChain chain;
  29     private final DatastoreContext datastoreContext;
  30     private final ShardStats shardStats;
  31
  32     public ShardTransactionChain(DOMStoreTransactionChain chain, DatastoreContext datastoreContext,
  33             ShardStats shardStats) {
  34         this.chain = chain;
  35         this.datastoreContext = datastoreContext;
  36         this.shardStats = shardStats;
  37     }
  38
  39     @Override
  40     public void handleReceive(Object message) throws Exception {
  41         if (message.getClass().equals(CreateTransaction.SERIALIZABLE_CLASS)) {
  42             CreateTransaction createTransaction = CreateTransaction.fromSerializable( message);
  43             createTransaction(createTransaction);
  44         } else if (message.getClass().equals(CloseTransactionChain.SERIALIZABLE_CLASS)) {
  45             chain.close();
  46             getSender().tell(CloseTransactionChainReply.INSTANCE.toSerializable(), getSelf());
  47         }else{
  48             unknownMessage(message);
  49         }
  50     }
  51
  52     private ActorRef getShardActor(){
  53         return getContext().parent();
  54     }
  55
  56     private ActorRef createTypedTransactionActor(CreateTransaction createTransaction) {
  57         String transactionName = "shard-" + createTransaction.getTransactionId();
  58         if(createTransaction.getTransactionType() ==
  59                 TransactionProxy.TransactionType.READ_ONLY.ordinal()) {
  60             return getContext().actorOf(
  61                     ShardTransaction.props( chain.newReadOnlyTransaction(), getShardActor(),
  62                             datastoreContext, shardStats, createTransaction.getTransactionId(),
  63                             createTransaction.getVersion()), transactionName);
  64         } else if (createTransaction.getTransactionType() ==
  65                 TransactionProxy.TransactionType.READ_WRITE.ordinal()) {
  66             return getContext().actorOf(
  67                     ShardTransaction.props( chain.newReadWriteTransaction(), getShardActor(),
  68                             datastoreContext, shardStats, createTransaction.getTransactionId(),
  69                             createTransaction.getVersion()), transactionName);
  70         } else if (createTransaction.getTransactionType() ==
  71                 TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) {
  72             return getContext().actorOf(
  73                     ShardTransaction.props( chain.newWriteOnlyTransaction(), getShardActor(),
  74                             datastoreContext, shardStats, createTransaction.getTransactionId(),
  75                             createTransaction.getVersion()), transactionName);
  76         } else {
  77             throw new IllegalArgumentException (
  78                     "CreateTransaction message has unidentified transaction type=" +
  79                              createTransaction.getTransactionType());
  80         }
  81     }
  82
  83     private void createTransaction(CreateTransaction createTransaction) {
  84
  85         ActorRef transactionActor = createTypedTransactionActor(createTransaction);
  86         getSender().tell(new CreateTransactionReply(transactionActor.path().toString(),
  87                 createTransaction.getTransactionId()).toSerializable(), getSelf());
  88     }
  89
  90     public static Props props(DOMStoreTransactionChain chain, SchemaContext schemaContext,
  91         DatastoreContext datastoreContext, ShardStats shardStats) {
  92         return Props.create(new ShardTransactionChainCreator(chain, datastoreContext, shardStats));
  93     }
  94
  95     private static class ShardTransactionChainCreator implements Creator<ShardTransactionChain> {
  96         private static final long serialVersionUID = 1L;
  97
  98         final DOMStoreTransactionChain chain;
  99         final DatastoreContext datastoreContext;
 100         final ShardStats shardStats;
 101
 102
 103         ShardTransactionChainCreator(DOMStoreTransactionChain chain, DatastoreContext datastoreContext,
 104                 ShardStats shardStats) {
 105             this.chain = chain;
 106             this.datastoreContext = datastoreContext;
 107             this.shardStats = shardStats;
 108         }
 109
 110         @Override
 111         public ShardTransactionChain create() throws Exception {
 112             return new ShardTransactionChain(chain, datastoreContext, shardStats);
 113         }
 114     }
 115 }