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%2FTransactionProxy.java;h=811b851697910cf19d94a5079b1054b8635e8190;hp=609dea0b360819ebc576e636e2237b8cb9868172;hb=18a4539ad844c05fcd30373efa43f873aca4c142;hpb=a6690c65b0b60e9aeddc488267b7ee2ba0132c67

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
index 609dea0b36..811b851697 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
@@ -8,57 +8,161 @@
 
 package org.opendaylight.controller.cluster.datastore;
 
+import akka.actor.ActorPath;
+import akka.actor.ActorSelection;
 import com.google.common.base.Optional;
 import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.ListenableFutureTask;
+import org.opendaylight.controller.cluster.datastore.messages.CloseTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
+import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
+import org.opendaylight.controller.cluster.datastore.messages.MergeData;
+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.utils.ActorContext;
 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.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.atomic.AtomicLong;
+
 /**
  * TransactionProxy acts as a proxy for one or more transactions that were created on a remote shard
- *
+ * <p>
  * Creating a transaction on the consumer side will create one instance of a transaction proxy. If during
  * the transaction reads and writes are done on data that belongs to different shards then a separate transaction will
  * be created on each of those shards by the TransactionProxy
- *
+ *</p>
+ * <p>
  * The TransactionProxy does not make any guarantees about atomicity or order in which the transactions on the various
  * shards will be executed.
- *
+ * </p>
  */
 public class TransactionProxy implements DOMStoreReadWriteTransaction {
+
+    public enum TransactionType {
+        READ_ONLY,
+        WRITE_ONLY,
+        READ_WRITE
+    }
+
+    private static final AtomicLong counter = new AtomicLong();
+
+    private final TransactionType readOnly;
+    private final ActorContext actorContext;
+    private final Map<String, ActorSelection> remoteTransactionPaths = new HashMap<>();
+    private final String identifier;
+
+    public TransactionProxy(
+        ActorContext actorContext,
+        TransactionType readOnly) {
+
+        this.identifier = "transaction-" + counter.getAndIncrement();
+        this.readOnly = readOnly;
+        this.actorContext = actorContext;
+
+        Object response = actorContext.executeShardOperation(Shard.DEFAULT_NAME, new CreateTransaction(), ActorContext.ASK_DURATION);
+        if(response instanceof CreateTransactionReply){
+            CreateTransactionReply reply = (CreateTransactionReply) response;
+            remoteTransactionPaths.put(Shard.DEFAULT_NAME, actorContext.actorSelection(reply.getTransactionPath()));
+        }
+    }
+
     @Override
-    public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(InstanceIdentifier path) {
-        throw new UnsupportedOperationException("read");
+    public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final InstanceIdentifier path) {
+        final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
+
+        Callable<Optional<NormalizedNode<?,?>>> call = new Callable() {
+
+            @Override public Optional<NormalizedNode<?,?>> call() throws Exception {
+                Object response = actorContext
+                    .executeRemoteOperation(remoteTransaction, new ReadData(path),
+                        ActorContext.ASK_DURATION);
+                if(response instanceof ReadDataReply){
+                    ReadDataReply reply = (ReadDataReply) response;
+                    //FIXME : A cast should not be required here ???
+                    return (Optional<NormalizedNode<?, ?>>) Optional.of(reply.getNormalizedNode());
+                }
+
+                return Optional.absent();
+            }
+        };
+
+        ListenableFutureTask<Optional<NormalizedNode<?, ?>>>
+            future = ListenableFutureTask.create(call);
+
+        //FIXME : Use a thread pool here
+        Executors.newSingleThreadExecutor().submit(future);
+
+        return future;
     }
 
     @Override
     public void write(InstanceIdentifier path, NormalizedNode<?, ?> data) {
-        throw new UnsupportedOperationException("write");
+        final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
+        remoteTransaction.tell(new WriteData(path, data), null);
     }
 
     @Override
     public void merge(InstanceIdentifier path, NormalizedNode<?, ?> data) {
-        throw new UnsupportedOperationException("merge");
+        final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
+        remoteTransaction.tell(new MergeData(path, data), null);
     }
 
     @Override
     public void delete(InstanceIdentifier path) {
-        throw new UnsupportedOperationException("delete");
+        final ActorSelection remoteTransaction = remoteTransactionFromIdentifier(path);
+        remoteTransaction.tell(new DeleteData(path), null);
     }
 
     @Override
     public DOMStoreThreePhaseCommitCohort ready() {
-        throw new UnsupportedOperationException("ready");
+        List<ActorPath> cohortPaths = new ArrayList<>();
+
+        for(ActorSelection remoteTransaction : remoteTransactionPaths.values()) {
+            Object result = actorContext.executeRemoteOperation(remoteTransaction,
+                new ReadyTransaction(),
+                ActorContext.ASK_DURATION
+            );
+
+            if(result instanceof ReadyTransactionReply){
+                ReadyTransactionReply reply = (ReadyTransactionReply) result;
+                cohortPaths.add(reply.getCohortPath());
+            }
+        }
+
+        return new ThreePhaseCommitCohortProxy(actorContext, cohortPaths);
     }
 
     @Override
     public Object getIdentifier() {
-        throw new UnsupportedOperationException("getIdentifier");
+        return this.identifier;
     }
 
     @Override
     public void close() {
-        throw new UnsupportedOperationException("close");
+        for(ActorSelection remoteTransaction : remoteTransactionPaths.values()) {
+            remoteTransaction.tell(new CloseTransaction(), null);
+        }
+    }
+
+    private ActorSelection remoteTransactionFromIdentifier(InstanceIdentifier path){
+        String shardName = shardNameFromIdentifier(path);
+        return remoteTransactionPaths.get(shardName);
+    }
+
+    private String shardNameFromIdentifier(InstanceIdentifier path){
+        return Shard.DEFAULT_NAME;
     }
 }