X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FShardTransaction.java;h=f747afa7867ac8f7f6434987045315b98bc9cca5;hp=ef9b66a1bcb028233a039203ec02eabc48b5530c;hb=18a4539ad844c05fcd30373efa43f873aca4c142;hpb=d3d2323ad9ad332d71dc6b956e4a3d3daa525902

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 ef9b66a1bc..f747afa786 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
@@ -8,42 +8,196 @@
 
 package org.opendaylight.controller.cluster.datastore;
 
+import akka.actor.ActorRef;
 import akka.actor.Props;
 import akka.actor.UntypedActor;
+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 org.opendaylight.controller.cluster.datastore.messages.CloseTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionReply;
+import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
+import org.opendaylight.controller.cluster.datastore.messages.DeleteDataReply;
+import org.opendaylight.controller.cluster.datastore.messages.MergeData;
+import org.opendaylight.controller.cluster.datastore.messages.MergeDataReply;
+import org.opendaylight.controller.cluster.datastore.messages.ReadData;
+import org.opendaylight.controller.cluster.datastore.messages.ReadDataReply;
+import org.opendaylight.controller.cluster.datastore.messages.ReadyTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.ReadyTransactionReply;
+import org.opendaylight.controller.cluster.datastore.messages.WriteData;
+import org.opendaylight.controller.cluster.datastore.messages.WriteDataReply;
+import org.opendaylight.controller.cluster.datastore.modification.CompositeModification;
+import org.opendaylight.controller.cluster.datastore.modification.DeleteModification;
+import org.opendaylight.controller.cluster.datastore.modification.ImmutableCompositeModification;
+import org.opendaylight.controller.cluster.datastore.modification.MergeModification;
+import org.opendaylight.controller.cluster.datastore.modification.MutableCompositeModification;
+import org.opendaylight.controller.cluster.datastore.modification.WriteModification;
 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
+import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+import java.util.concurrent.ExecutionException;
 
 /**
  * The ShardTransaction Actor represents a remote transaction
- *
+ * <p>
  * The ShardTransaction Actor delegates all actions to DOMDataReadWriteTransaction
- *
+ * </p>
+ * <p>
  * Even though the DOMStore and the DOMStoreTransactionChain implement multiple types of transactions
  * the ShardTransaction Actor only works with read-write transactions. This is just to keep the logic simple. At this
  * time there are no known advantages for creating a read-only or write-only transaction which may change over time
  * at which point we can optimize things in the distributed store as well.
+ * </p>
+ * <p>
+ * Handles Messages <br/>
+ * ---------------- <br/>
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.ReadData}
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.WriteData}
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.MergeData}
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.DeleteData}
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.ReadyTransaction}
+ * <li> {@link org.opendaylight.controller.cluster.datastore.messages.CloseTransaction}
+ * </p>
  */
 public class ShardTransaction extends UntypedActor {
 
-  private final DOMStoreReadWriteTransaction transaction;
+    private final ActorRef shardActor;
+
+    private final DOMStoreReadWriteTransaction transaction;
+
+    private final MutableCompositeModification modification =
+        new MutableCompositeModification();
+
+    private final LoggingAdapter log =
+        Logging.getLogger(getContext().system(), this);
+
+    public ShardTransaction(DOMStoreReadWriteTransaction transaction,
+        ActorRef shardActor) {
+        this.transaction = transaction;
+        this.shardActor = shardActor;
+    }
+
+
+    public static Props props(final DOMStoreReadWriteTransaction transaction,
+        final ActorRef shardActor) {
+        return Props.create(new Creator<ShardTransaction>() {
+
+            @Override
+            public ShardTransaction create() throws Exception {
+                return new ShardTransaction(transaction, shardActor);
+            }
+        });
+    }
+
+    @Override
+    public void onReceive(Object message) throws Exception {
+        log.debug("Received message {}", message);
+
+        if (message instanceof ReadData) {
+            readData((ReadData) message);
+        } else if (message instanceof WriteData) {
+            writeData((WriteData) message);
+        } else if (message instanceof MergeData) {
+            mergeData((MergeData) message);
+        } else if (message instanceof DeleteData) {
+            deleteData((DeleteData) message);
+        } else if (message instanceof ReadyTransaction) {
+            readyTransaction((ReadyTransaction) message);
+        } else if (message instanceof CloseTransaction) {
+            closeTransaction((CloseTransaction) message);
+        } else if (message instanceof GetCompositedModification) {
+            // This is here for testing only
+            getSender().tell(new GetCompositeModificationReply(
+                new ImmutableCompositeModification(modification)), getSelf());
+        }
+    }
+
+    private void readData(ReadData message) {
+        final ActorRef sender = getSender();
+        final ActorRef self = getSelf();
+        final InstanceIdentifier path = message.getPath();
+        final ListenableFuture<Optional<NormalizedNode<?, ?>>> future =
+            transaction.read(path);
+
+        future.addListener(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    Optional<NormalizedNode<?, ?>> optional = future.get();
+                    if (optional.isPresent()) {
+                        sender.tell(new ReadDataReply(optional.get()), self);
+                    } else {
+                        //TODO : Need to decide what to do here
+                    }
+                } catch (InterruptedException | ExecutionException e) {
+                    log.error(e,
+                        "An exception happened when reading data from path : "
+                            + path.toString());
+                }
+
+            }
+        }, getContext().dispatcher());
+    }
+
+
+    private void writeData(WriteData message) {
+        modification.addModification(
+            new WriteModification(message.getPath(), message.getData()));
+        transaction.write(message.getPath(), message.getData());
+        getSender().tell(new WriteDataReply(), getSelf());
+    }
+
+    private void mergeData(MergeData message) {
+        modification.addModification(
+            new MergeModification(message.getPath(), message.getData()));
+        transaction.merge(message.getPath(), message.getData());
+        getSender().tell(new MergeDataReply(), getSelf());
+    }
+
+    private void deleteData(DeleteData message) {
+        modification.addModification(new DeleteModification(message.getPath()));
+        transaction.delete(message.getPath());
+        getSender().tell(new DeleteDataReply(), getSelf());
+    }
+
+    private void readyTransaction(ReadyTransaction message) {
+        DOMStoreThreePhaseCommitCohort cohort = transaction.ready();
+        ActorRef cohortActor = getContext().actorOf(
+            ThreePhaseCommitCohort.props(cohort, shardActor, modification));
+        getSender()
+            .tell(new ReadyTransactionReply(cohortActor.path()), getSelf());
+
+    }
+
+    private void closeTransaction(CloseTransaction message) {
+        transaction.close();
+        getSender().tell(new CloseTransactionReply(), getSelf());
+    }
+
+
+    // These classes are in here for test purposes only
+
+
+    static class GetCompositedModification {
+
+    }
+
 
-  public ShardTransaction(DOMStoreReadWriteTransaction transaction) {
-    this.transaction = transaction;
-  }
+    static class GetCompositeModificationReply {
+        private final CompositeModification modification;
 
 
-  public static Props props(final DOMStoreReadWriteTransaction transaction){
-    return Props.create(new Creator<ShardTransaction>(){
+        GetCompositeModificationReply(CompositeModification modification) {
+            this.modification = modification;
+        }
 
-      @Override
-      public ShardTransaction create() throws Exception {
-        return new ShardTransaction(transaction);
-      }
-    });
-  }
 
-  @Override
-  public void onReceive(Object message) throws Exception {
-    throw new UnsupportedOperationException("onReceive");
-  }
+        public CompositeModification getModification() {
+            return modification;
+        }
+    }
 }