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
  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 SchemaContext schemaContext;
  31     private final ShardStats shardStats;
  32
  33     public ShardTransactionChain(DOMStoreTransactionChain chain, SchemaContext schemaContext,
  34             DatastoreContext datastoreContext, ShardStats shardStats) {
  35         this.chain = chain;
  36         this.datastoreContext = datastoreContext;
  37         this.schemaContext = schemaContext;
  38         this.shardStats = shardStats;
  39     }
  40
  41     @Override
  42     public void handleReceive(Object message) throws Exception {
  43         if (message.getClass().equals(CreateTransaction.SERIALIZABLE_CLASS)) {
  44             CreateTransaction createTransaction = CreateTransaction.fromSerializable( message);
  45             createTransaction(createTransaction);
  46         } else if (message.getClass().equals(CloseTransactionChain.SERIALIZABLE_CLASS)) {
  47             chain.close();
  48             getSender().tell(new CloseTransactionChainReply().toSerializable(), getSelf());
  49         }else{
  50             unknownMessage(message);
  51         }
  52     }
  53
  54     private ActorRef getShardActor(){
  55         return getContext().parent();
  56     }
  57
  58     private ActorRef createTypedTransactionActor(CreateTransaction createTransaction,
  59             String transactionId) {
  60         if(createTransaction.getTransactionType() ==
  61                 TransactionProxy.TransactionType.READ_ONLY.ordinal()) {
  62             return getContext().actorOf(
  63                     ShardTransaction.props( chain.newReadOnlyTransaction(), getShardActor(),
  64                             schemaContext, datastoreContext, shardStats), transactionId);
  65         } else if (createTransaction.getTransactionType() ==
  66                 TransactionProxy.TransactionType.READ_WRITE.ordinal()) {
  67             return getContext().actorOf(
  68                     ShardTransaction.props( chain.newReadWriteTransaction(), getShardActor(),
  69                             schemaContext, datastoreContext, shardStats), transactionId);
  70         } else if (createTransaction.getTransactionType() ==
  71                 TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) {
  72             return getContext().actorOf(
  73                     ShardTransaction.props( chain.newWriteOnlyTransaction(), getShardActor(),
  74                             schemaContext, datastoreContext, shardStats), transactionId);
  75         } else {
  76             throw new IllegalArgumentException (
  77                     "CreateTransaction message has unidentified transaction type=" +
  78                              createTransaction.getTransactionType());
  79         }
  80     }
  81
  82     private void createTransaction(CreateTransaction createTransaction) {
  83
  84         ActorRef transactionActor = createTypedTransactionActor(createTransaction, "shard-" + createTransaction.getTransactionId());
  85         getSender()
  86             .tell(new CreateTransactionReply(transactionActor.path().toString(),createTransaction.getTransactionId()).toSerializable(),
  87                 getSelf());
  88     }
  89
  90     public static Props props(DOMStoreTransactionChain chain, SchemaContext schemaContext,
  91         DatastoreContext datastoreContext, ShardStats shardStats) {
  92         return Props.create(new ShardTransactionChainCreator(chain, schemaContext,
  93                 datastoreContext, shardStats));
  94     }
  95
  96     private static class ShardTransactionChainCreator implements Creator<ShardTransactionChain> {
  97         private static final long serialVersionUID = 1L;
  98
  99         final DOMStoreTransactionChain chain;
 100         final DatastoreContext datastoreContext;
 101         final SchemaContext schemaContext;
 102         final ShardStats shardStats;
 103
 104
 105         ShardTransactionChainCreator(DOMStoreTransactionChain chain, SchemaContext schemaContext,
 106             DatastoreContext datastoreContext, ShardStats shardStats) {
 107             this.chain = chain;
 108             this.datastoreContext = datastoreContext;
 109             this.schemaContext = schemaContext;
 110             this.shardStats = shardStats;
 111         }
 112
 113         @Override
 114         public ShardTransactionChain create() throws Exception {
 115             return new ShardTransactionChain(chain, schemaContext, datastoreContext, shardStats);
 116         }
 117     }
 118 }