X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FShardReadTransaction.java;h=ec526d4fc07e01486fa7ed0cac9aa28b54e609c3;hb=175f38490b56c4b4e0ec356b17b91f887b295da4;hp=d12e9997bb29175c7d6c414efdc72b339b706932;hpb=720b039093db2268d6dfeed364e685d34d6c62bf;p=controller.git

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardReadTransaction.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardReadTransaction.java
index d12e9997bb..ec526d4fc0 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardReadTransaction.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardReadTransaction.java
@@ -1,57 +1,75 @@
 /*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
  *
- *  Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
- *
- *  This program and the accompanying materials are made available under the
- *  terms of the Eclipse Public License v1.0 which accompanies this distribution,
- *  and is available at http://www.eclipse.org/legal/epl-v10.html
- *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
  */
 
 package org.opendaylight.controller.cluster.datastore;
 
 import akka.actor.ActorRef;
+import akka.actor.PoisonPill;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
+import org.opendaylight.controller.cluster.datastore.messages.CreateSnapshot;
 import org.opendaylight.controller.cluster.datastore.messages.DataExists;
 import org.opendaylight.controller.cluster.datastore.messages.ReadData;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 
 /**
  * @author: syedbahm
  * Date: 8/6/14
  */
 public class ShardReadTransaction extends ShardTransaction {
-    private final DOMStoreReadTransaction transaction;
+    private final AbstractShardDataTreeTransaction<?> transaction;
 
-    public ShardReadTransaction(DOMStoreReadTransaction transaction, ActorRef shardActor,
-            SchemaContext schemaContext, ShardStats shardStats, String transactionID) {
-        super(shardActor, schemaContext, shardStats, transactionID);
-        this.transaction = transaction;
+    public ShardReadTransaction(AbstractShardDataTreeTransaction<?> transaction, ActorRef shardActor,
+            ShardStats shardStats) {
+        super(shardActor, shardStats, transaction.getId());
+        this.transaction = Preconditions.checkNotNull(transaction);
     }
 
     @Override
-    public void handleReceive(Object message) throws Exception {
-        if(message instanceof ReadData) {
-            readData(transaction, (ReadData) message, !SERIALIZED_REPLY);
+    public void handleReceive(Object message) {
+        if (message instanceof CreateSnapshot) {
+            createSnapshot();
+        } else if(ReadData.isSerializedType(message)) {
+            readData(transaction, ReadData.fromSerializable(message));
+        } else if(DataExists.isSerializedType(message)) {
+            dataExists(transaction, DataExists.fromSerializable(message));
+        } else {
+            super.handleReceive(message);
+        }
+    }
 
-        } else if (message instanceof DataExists) {
-            dataExists(transaction, (DataExists) message, !SERIALIZED_REPLY);
+    private void createSnapshot() {
 
-        } else if(ReadData.SERIALIZABLE_CLASS.equals(message.getClass())) {
-            readData(transaction, ReadData.fromSerializable(message), SERIALIZED_REPLY);
+        // This is a special message sent by the shard to send back a serialized snapshot of the whole
+        // data store tree. This transaction was created for that purpose only so we can
+        // self-destruct after sending the reply.
 
-        } else if(DataExists.SERIALIZABLE_CLASS.equals(message.getClass())) {
-            dataExists(transaction, DataExists.fromSerializable(message), SERIALIZED_REPLY);
+        final ActorRef sender = getSender();
+        final ActorRef self = getSelf();
+        final Optional<NormalizedNode<?, ?>> result = transaction.getSnapshot().readNode(YangInstanceIdentifier.EMPTY);
 
-        } else {
-            super.handleReceive(message);
-        }
+        byte[] serialized = SerializationUtils.serializeNormalizedNode(result.get());
+        sender.tell(new CaptureSnapshotReply(serialized), self);
+
+        self.tell(PoisonPill.getInstance(), self);
     }
 
     @Override
-    protected DOMStoreTransaction getDOMStoreTransaction() {
+    protected AbstractShardDataTreeTransaction<?> getDOMStoreTransaction() {
         return transaction;
     }
+
+    @Override
+    protected boolean returnCloseTransactionReply() {
+        return false;
+    }
 }