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%2FShardTransaction.java;h=360a10722c06df2c3e357631b43d89eac801a3d3;hb=3d7027237aa124800753b9438ec625b73000a0d9;hp=1ffe5ca40262ef630a247dca0ce8e46e126f3c34;hpb=bc7b4edec3c868a14e0a0de3a3b8e1af2406448b;p=controller.git

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransaction.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransaction.java
index 1ffe5ca402..360a10722c 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransaction.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardTransaction.java
@@ -14,9 +14,11 @@ import akka.event.Logging;
 import akka.event.LoggingAdapter;
 import akka.japi.Creator;
 import com.google.common.base.Optional;
-import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.CheckedFuture;
 import org.opendaylight.controller.cluster.datastore.exceptions.UnknownMessageException;
 import org.opendaylight.controller.cluster.datastore.messages.CloseTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.DataExists;
+import org.opendaylight.controller.cluster.datastore.messages.DataExistsReply;
 import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
 import org.opendaylight.controller.cluster.datastore.messages.DeleteDataReply;
 import org.opendaylight.controller.cluster.datastore.messages.MergeData;
@@ -183,28 +185,38 @@ public abstract class ShardTransaction extends AbstractUntypedActor {
     final ActorRef sender = getSender();
     final ActorRef self = getSelf();
     final YangInstanceIdentifier path = message.getPath();
-    final ListenableFuture<Optional<NormalizedNode<?, ?>>> future =
-        transaction.read(path);
+    final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future =
+          transaction.read(path);
 
-    future.addListener(new Runnable() {
+      future.addListener(new Runnable() {
       @Override
       public void run() {
         try {
-          Optional<NormalizedNode<?, ?>> optional = future.get();
+          Optional<NormalizedNode<?, ?>> optional = future.checkedGet();
           if (optional.isPresent()) {
             sender.tell(new ReadDataReply(schemaContext,optional.get()).toSerializable(), self);
           } else {
             sender.tell(new ReadDataReply(schemaContext,null).toSerializable(), self);
           }
         } catch (Exception e) {
-            sender.tell(new akka.actor.Status.Failure(new ReadFailedException( "An Exception occurred  when reading data from path : "
-                + path.toString(),e)),self);
+            sender.tell(new akka.actor.Status.Failure(e),self);
         }
 
       }
     }, getContext().dispatcher());
   }
 
+    protected void dataExists(DOMStoreReadTransaction transaction, DataExists message) {
+        final YangInstanceIdentifier path = message.getPath();
+
+        try {
+            Boolean exists = transaction.exists(path).checkedGet();
+            getSender().tell(new DataExistsReply(exists).toSerializable(), getSelf());
+        } catch (ReadFailedException e) {
+            getSender().tell(new akka.actor.Status.Failure(e),getSelf());
+        }
+
+    }
 
   protected void writeData(DOMStoreWriteTransaction transaction, WriteData message) {
     modification.addModification(