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     private final String shardName;
  33
  34     ShardTransactionActorFactory(ShardDataTree dataTree, DatastoreContext datastoreContext,
  35             String txnDispatcherPath, ActorRef shardActor, UntypedActorContext actorContext, ShardStats shardMBean,
  36             String shardName) {
  37         this.dataTree = Preconditions.checkNotNull(dataTree);
  38         this.datastoreContext = Preconditions.checkNotNull(datastoreContext);
  39         this.txnDispatcherPath = Preconditions.checkNotNull(txnDispatcherPath);
  40         this.shardMBean = Preconditions.checkNotNull(shardMBean);
  41         this.actorContext = Preconditions.checkNotNull(actorContext);
  42         this.shardActor = Preconditions.checkNotNull(shardActor);
  43         this.shardName = Preconditions.checkNotNull(shardName);
  44     }
  45
  46     private String actorNameFor(final TransactionIdentifier txId) {
  47         final LocalHistoryIdentifier historyId = txId.getHistoryId();
  48         final ClientIdentifier clientId = historyId.getClientId();
  49         final FrontendIdentifier frontendId = clientId.getFrontendId();
  50
  51         final StringBuilder sb = new StringBuilder("shard-");
  52         sb.append(shardName).append('-')
  53             .append(frontendId.getMemberName().getName()).append(':')
  54             .append(frontendId.getClientType().getName()).append('@')
  55             .append(clientId.getGeneration()).append(':');
  56         if (historyId.getHistoryId() != 0) {
  57             sb.append(historyId.getHistoryId()).append('-');
  58         }
  59
  60         return sb.append(txId.getTransactionId()).toString();
  61     }
  62
  63     ActorRef newShardTransaction(TransactionType type, TransactionIdentifier transactionID) {
  64         final AbstractShardDataTreeTransaction<?> transaction;
  65         switch (type) {
  66             case READ_ONLY:
  67                 transaction = dataTree.newReadOnlyTransaction(transactionID);
  68                 shardMBean.incrementReadOnlyTransactionCount();
  69                 break;
  70             case READ_WRITE:
  71                 transaction = dataTree.newReadWriteTransaction(transactionID);
  72                 shardMBean.incrementReadWriteTransactionCount();
  73                 break;
  74             case WRITE_ONLY:
  75                 transaction = dataTree.newReadWriteTransaction(transactionID);
  76                 shardMBean.incrementWriteOnlyTransactionCount();
  77                 break;
  78             default:
  79                 throw new IllegalArgumentException("Unsupported transaction type " + type);
  80         }
  81
  82         return actorContext.actorOf(ShardTransaction.props(type, transaction, shardActor, datastoreContext, shardMBean)
  83             .withDispatcher(txnDispatcherPath), actorNameFor(transactionID));
  84     }
  85 }