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 static java.util.Objects.requireNonNull;
  11
  12 import akka.actor.AbstractActor.ActorContext;
  13 import akka.actor.ActorRef;
  14 import java.util.concurrent.atomic.AtomicLong;
  15 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  16 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
  17 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
  18 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  19 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  20
  21 /**
  22  * A factory for creating ShardTransaction actors.
  23  *
  24  * @author Thomas Pantelis
  25  */
  26 class ShardTransactionActorFactory {
  27     private static final AtomicLong ACTOR_NAME_COUNTER = new AtomicLong();
  28
  29     private final ShardDataTree dataTree;
  30     private final DatastoreContext datastoreContext;
  31     private final String txnDispatcherPath;
  32     private final ShardStats shardMBean;
  33     private final ActorContext actorContext;
  34     private final ActorRef shardActor;
  35     private final String shardName;
  36
  37     ShardTransactionActorFactory(ShardDataTree dataTree, DatastoreContext datastoreContext,
  38             String txnDispatcherPath, ActorRef shardActor, ActorContext actorContext, ShardStats shardMBean,
  39             String shardName) {
  40         this.dataTree = requireNonNull(dataTree);
  41         this.datastoreContext = requireNonNull(datastoreContext);
  42         this.txnDispatcherPath = requireNonNull(txnDispatcherPath);
  43         this.shardMBean = requireNonNull(shardMBean);
  44         this.actorContext = requireNonNull(actorContext);
  45         this.shardActor = requireNonNull(shardActor);
  46         this.shardName = requireNonNull(shardName);
  47     }
  48
  49     private String actorNameFor(final TransactionIdentifier txId) {
  50         final LocalHistoryIdentifier historyId = txId.getHistoryId();
  51         final ClientIdentifier clientId = historyId.getClientId();
  52         final FrontendIdentifier frontendId = clientId.getFrontendId();
  53
  54         final StringBuilder sb = new StringBuilder("shard-");
  55         sb.append(shardName).append('-')
  56             .append(frontendId.getMemberName().getName()).append(':')
  57             .append(frontendId.getClientType().getName()).append('@')
  58             .append(clientId.getGeneration()).append(':');
  59         if (historyId.getHistoryId() != 0) {
  60             sb.append(historyId.getHistoryId()).append('-');
  61         }
  62
  63         return sb.append(txId.getTransactionId()).append('_').append(ACTOR_NAME_COUNTER.incrementAndGet()).toString();
  64     }
  65
  66     ActorRef newShardTransaction(TransactionType type, TransactionIdentifier transactionID) {
  67         final AbstractShardDataTreeTransaction<?> transaction;
  68         switch (type) {
  69             case READ_ONLY:
  70                 transaction = dataTree.newReadOnlyTransaction(transactionID);
  71                 break;
  72             case READ_WRITE:
  73             case WRITE_ONLY:
  74                 transaction = dataTree.newReadWriteTransaction(transactionID);
  75                 break;
  76             default:
  77                 throw new IllegalArgumentException("Unsupported transaction type " + type);
  78         }
  79
  80         return actorContext.actorOf(ShardTransaction.props(type, transaction, shardActor, datastoreContext, shardMBean)
  81             .withDispatcher(txnDispatcherPath), actorNameFor(transactionID));
  82     }
  83 }