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
  16 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  17 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChain;
  18 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChainReply;
  19 import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
  20 import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
  21 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  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 DOMStoreTransactionChain chain;
  30     private final DatastoreContext datastoreContext;
  31     private final SchemaContext schemaContext;
  32     private final ShardStats shardStats;
  33
  34     public ShardTransactionChain(DOMStoreTransactionChain chain, SchemaContext schemaContext,
  35             DatastoreContext datastoreContext, ShardStats shardStats) {
  36         this.chain = chain;
  37         this.datastoreContext = datastoreContext;
  38         this.schemaContext = schemaContext;
  39         this.shardStats = shardStats;
  40     }
  41
  42     @Override
  43     public void handleReceive(Object message) throws Exception {
  44         if (message.getClass().equals(CreateTransaction.SERIALIZABLE_CLASS)) {
  45             CreateTransaction createTransaction = CreateTransaction.fromSerializable( message);
  46             createTransaction(createTransaction);
  47         } else if (message.getClass().equals(CloseTransactionChain.SERIALIZABLE_CLASS)) {
  48             chain.close();
  49             getSender().tell(new CloseTransactionChainReply().toSerializable(), getSelf());
  50         }else{
  51             unknownMessage(message);
  52         }
  53     }
  54
  55     private ActorRef getShardActor(){
  56         return getContext().parent();
  57     }
  58
  59     private ActorRef createTypedTransactionActor(CreateTransaction createTransaction) {
  60         String transactionName = "shard-" + createTransaction.getTransactionId();
  61         if(createTransaction.getTransactionType() ==
  62                 TransactionProxy.TransactionType.READ_ONLY.ordinal()) {
  63             return getContext().actorOf(
  64                     ShardTransaction.props( chain.newReadOnlyTransaction(), getShardActor(),
  65                             schemaContext, datastoreContext, shardStats,
  66                             createTransaction.getTransactionId()), transactionName);
  67         } else if (createTransaction.getTransactionType() ==
  68                 TransactionProxy.TransactionType.READ_WRITE.ordinal()) {
  69             return getContext().actorOf(
  70                     ShardTransaction.props( chain.newReadWriteTransaction(), getShardActor(),
  71                             schemaContext, datastoreContext, shardStats,
  72                             createTransaction.getTransactionId()), transactionName);
  73         } else if (createTransaction.getTransactionType() ==
  74                 TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) {
  75             return getContext().actorOf(
  76                     ShardTransaction.props( chain.newWriteOnlyTransaction(), getShardActor(),
  77                             schemaContext, datastoreContext, shardStats,
  78                             createTransaction.getTransactionId()), transactionName);
  79         } else {
  80             throw new IllegalArgumentException (
  81                     "CreateTransaction message has unidentified transaction type=" +
  82                              createTransaction.getTransactionType());
  83         }
  84     }
  85
  86     private void createTransaction(CreateTransaction createTransaction) {
  87
  88         ActorRef transactionActor = createTypedTransactionActor(createTransaction);
  89         getSender().tell(new CreateTransactionReply(transactionActor.path().toString(),
  90                 createTransaction.getTransactionId()).toSerializable(), getSelf());
  91     }
  92
  93     public static Props props(DOMStoreTransactionChain chain, SchemaContext schemaContext,
  94         DatastoreContext datastoreContext, ShardStats shardStats) {
  95         return Props.create(new ShardTransactionChainCreator(chain, schemaContext,
  96                 datastoreContext, shardStats));
  97     }
  98
  99     private static class ShardTransactionChainCreator implements Creator<ShardTransactionChain> {
 100         private static final long serialVersionUID = 1L;
 101
 102         final DOMStoreTransactionChain chain;
 103         final DatastoreContext datastoreContext;
 104         final SchemaContext schemaContext;
 105         final ShardStats shardStats;
 106
 107
 108         ShardTransactionChainCreator(DOMStoreTransactionChain chain, SchemaContext schemaContext,
 109             DatastoreContext datastoreContext, ShardStats shardStats) {
 110             this.chain = chain;
 111             this.datastoreContext = datastoreContext;
 112             this.schemaContext = schemaContext;
 113             this.shardStats = shardStats;
 114         }
 115
 116         @Override
 117         public ShardTransactionChain create() throws Exception {
 118             return new ShardTransactionChain(chain, schemaContext, datastoreContext, shardStats);
 119         }
 120     }
 121 }