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