opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransactionActorFactory.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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 package org.opendaylight.controller.cluster.datastore;
   9
  10 import akka.actor.ActorRef;
  11 import akka.actor.UntypedActorContext;
  12 import com.google.common.base.Preconditions;
  13 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  14 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
  15 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
  16 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  17 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  18
  19 /**
  20  * A factory for creating ShardTransaction actors.
  21  *
  22  * @author Thomas Pantelis
  23  */
  24 class ShardTransactionActorFactory {
  25
  26     private final ShardDataTree dataTree;
  27     private final DatastoreContext datastoreContext;
  28     private final String txnDispatcherPath;
  29     private final ShardStats shardMBean;
  30     private final UntypedActorContext actorContext;
  31     private final ActorRef shardActor;
  32
  33     ShardTransactionActorFactory(ShardDataTree dataTree, DatastoreContext datastoreContext,
  34             String txnDispatcherPath, ActorRef shardActor, UntypedActorContext actorContext, ShardStats shardMBean) {
  35         this.dataTree = Preconditions.checkNotNull(dataTree);
  36         this.datastoreContext = datastoreContext;
  37         this.txnDispatcherPath = txnDispatcherPath;
  38         this.shardMBean = shardMBean;
  39         this.actorContext = actorContext;
  40         this.shardActor = shardActor;
  41     }
  42
  43     private static String actorNameFor(final TransactionIdentifier txId) {
  44         final LocalHistoryIdentifier historyId = txId.getHistoryId();
  45         final ClientIdentifier clientId = historyId.getClientId();
  46         final FrontendIdentifier frontendId = clientId.getFrontendId();
  47
  48         final StringBuilder sb = new StringBuilder("shard-");
  49         sb.append(frontendId.getMemberName().getName()).append(':');
  50         sb.append(frontendId.getClientType().getName()).append('@');
  51         sb.append(clientId.getGeneration()).append(':');
  52         if (historyId.getHistoryId() != 0) {
  53             sb.append(historyId.getHistoryId()).append('-');
  54         }
  55
  56         return sb.append(txId.getTransactionId()).toString();
  57     }
  58
  59     ActorRef newShardTransaction(TransactionType type, TransactionIdentifier transactionID) {
  60         final AbstractShardDataTreeTransaction<?> transaction;
  61         switch (type) {
  62             case READ_ONLY:
  63                 transaction = dataTree.newReadOnlyTransaction(transactionID);
  64                 shardMBean.incrementReadOnlyTransactionCount();
  65                 break;
  66             case READ_WRITE:
  67                 transaction = dataTree.newReadWriteTransaction(transactionID);
  68                 shardMBean.incrementReadWriteTransactionCount();
  69                 break;
  70             case WRITE_ONLY:
  71                 transaction = dataTree.newReadWriteTransaction(transactionID);
  72                 shardMBean.incrementWriteOnlyTransactionCount();
  73                 break;
  74             default:
  75                 throw new IllegalArgumentException("Unsupported transaction type " + type);
  76         }
  77
  78         return actorContext.actorOf(ShardTransaction.props(type, transaction, shardActor, datastoreContext, shardMBean)
  79             .withDispatcher(txnDispatcherPath), actorNameFor(transactionID));
  80     }
  81 }