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