CDS: Implement front-end support for local transactions
[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / ShardWriteTransaction.java
index 2e43219..365f97d 100644 (file)
@@ -1,6 +1,6 @@
 /*
- *
  *  Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *  Copyright (c) 2015 Brocade Communications 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,
@@ -13,24 +13,24 @@ package org.opendaylight.controller.cluster.datastore;
 import akka.actor.ActorRef;
 import akka.actor.PoisonPill;
 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
+import org.opendaylight.controller.cluster.datastore.messages.BatchedModifications;
+import org.opendaylight.controller.cluster.datastore.messages.BatchedModificationsReply;
+import org.opendaylight.controller.cluster.datastore.messages.DataExists;
 import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
 import org.opendaylight.controller.cluster.datastore.messages.DeleteDataReply;
 import org.opendaylight.controller.cluster.datastore.messages.ForwardedReadyTransaction;
 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.ReadyTransaction;
 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.Modification;
 import org.opendaylight.controller.cluster.datastore.modification.MutableCompositeModification;
 import org.opendaylight.controller.cluster.datastore.modification.WriteModification;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 
 /**
  * @author: syedbahm
@@ -38,65 +38,115 @@ import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  */
 public class ShardWriteTransaction extends ShardTransaction {
 
-    private final MutableCompositeModification modification = new MutableCompositeModification();
-    private final DOMStoreWriteTransaction transaction;
+    private final MutableCompositeModification compositeModification = new MutableCompositeModification();
+    private int totalBatchedModificationsReceived;
+    private Exception lastBatchedModificationsException;
+    private final ReadWriteShardDataTreeTransaction transaction;
 
-    public ShardWriteTransaction(DOMStoreWriteTransaction transaction, ActorRef shardActor,
-            SchemaContext schemaContext, ShardStats shardStats, String transactionID,
-            short clientTxVersion) {
-        super(shardActor, schemaContext, shardStats, transactionID, clientTxVersion);
+    public ShardWriteTransaction(ReadWriteShardDataTreeTransaction transaction, ActorRef shardActor,
+            ShardStats shardStats, String transactionID, short clientTxVersion) {
+        super(shardActor, shardStats, transactionID, clientTxVersion);
         this.transaction = transaction;
     }
 
     @Override
-    protected DOMStoreTransaction getDOMStoreTransaction() {
+    protected ReadWriteShardDataTreeTransaction getDOMStoreTransaction() {
         return transaction;
     }
 
     @Override
     public void handleReceive(Object message) throws Exception {
 
-        if (message instanceof WriteData) {
-            writeData(transaction, (WriteData) message, !SERIALIZED_REPLY);
-
-        } else if (message instanceof MergeData) {
-            mergeData(transaction, (MergeData) message, !SERIALIZED_REPLY);
-
-        } else if (message instanceof DeleteData) {
-            deleteData(transaction, (DeleteData) message, !SERIALIZED_REPLY);
-
+        if (message instanceof BatchedModifications) {
+            batchedModifications((BatchedModifications)message);
         } else if (message instanceof ReadyTransaction) {
-            readyTransaction(transaction, !SERIALIZED_REPLY);
-
+            readyTransaction(!SERIALIZED_REPLY, false);
+        } else if(ReadyTransaction.SERIALIZABLE_CLASS.equals(message.getClass())) {
+            readyTransaction(SERIALIZED_REPLY, false);
         } else if(WriteData.isSerializedType(message)) {
-            writeData(transaction, WriteData.fromSerializable(message), SERIALIZED_REPLY);
+            writeData(WriteData.fromSerializable(message), SERIALIZED_REPLY);
 
         } else if(MergeData.isSerializedType(message)) {
-            mergeData(transaction, MergeData.fromSerializable(message), SERIALIZED_REPLY);
-
-        } else if(DeleteData.SERIALIZABLE_CLASS.equals(message.getClass())) {
-            deleteData(transaction, DeleteData.fromSerializable(message), SERIALIZED_REPLY);
+            mergeData(MergeData.fromSerializable(message), SERIALIZED_REPLY);
 
-        } else if(ReadyTransaction.SERIALIZABLE_CLASS.equals(message.getClass())) {
-            readyTransaction(transaction, SERIALIZED_REPLY);
+        } else if(DeleteData.isSerializedType(message)) {
+            deleteData(DeleteData.fromSerializable(message), SERIALIZED_REPLY);
 
         } else if (message instanceof GetCompositedModification) {
             // This is here for testing only
-            getSender().tell(new GetCompositeModificationReply(
-                    new ImmutableCompositeModification(modification)), getSelf());
+            getSender().tell(new GetCompositeModificationReply(compositeModification), getSelf());
         } else {
             super.handleReceive(message);
         }
     }
 
-    private void writeData(DOMStoreWriteTransaction transaction, WriteData message,
-            boolean returnSerialized) {
+    private void batchedModifications(BatchedModifications batched) {
+        if (checkClosed()) {
+            if (batched.isReady()) {
+                getSelf().tell(PoisonPill.getInstance(), getSelf());
+            }
+            return;
+        }
+
+        try {
+            for(Modification modification: batched.getModifications()) {
+                compositeModification.addModification(modification);
+                modification.apply(transaction.getSnapshot());
+            }
+
+            totalBatchedModificationsReceived++;
+            if(batched.isReady()) {
+                if(lastBatchedModificationsException != null) {
+                    throw lastBatchedModificationsException;
+                }
+
+                if(totalBatchedModificationsReceived != batched.getTotalMessagesSent()) {
+                    throw new IllegalStateException(String.format(
+                            "The total number of batched messages received %d does not match the number sent %d",
+                            totalBatchedModificationsReceived, batched.getTotalMessagesSent()));
+                }
+
+                readyTransaction(false, batched.isDoCommitOnReady());
+            } else {
+                getSender().tell(new BatchedModificationsReply(batched.getModifications().size()), getSelf());
+            }
+        } catch (Exception e) {
+            lastBatchedModificationsException = e;
+            getSender().tell(new akka.actor.Status.Failure(e), getSelf());
+
+            if(batched.isReady()) {
+                getSelf().tell(PoisonPill.getInstance(), getSelf());
+            }
+        }
+    }
+
+    protected final void dataExists(DataExists message, final boolean returnSerialized) {
+        super.dataExists(transaction, message, returnSerialized);
+    }
+
+    protected final void readData(ReadData message, final boolean returnSerialized) {
+        super.readData(transaction, message, returnSerialized);
+    }
+
+    private boolean checkClosed() {
+        if (transaction.isClosed()) {
+            getSender().tell(new akka.actor.Status.Failure(new IllegalStateException("Transaction is closed, no modifications allowed")), getSelf());
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    private void writeData(WriteData message, boolean returnSerialized) {
         LOG.debug("writeData at path : {}", message.getPath());
+        if (checkClosed()) {
+            return;
+        }
 
-        modification.addModification(
-                new WriteModification(message.getPath(), message.getData(), getSchemaContext()));
+        compositeModification.addModification(
+                new WriteModification(message.getPath(), message.getData()));
         try {
-            transaction.write(message.getPath(), message.getData());
+            transaction.getSnapshot().write(message.getPath(), message.getData());
             WriteDataReply writeDataReply = WriteDataReply.INSTANCE;
             getSender().tell(returnSerialized ? writeDataReply.toSerializable(message.getVersion()) :
                 writeDataReply, getSelf());
@@ -105,15 +155,17 @@ public class ShardWriteTransaction extends ShardTransaction {
         }
     }
 
-    private void mergeData(DOMStoreWriteTransaction transaction, MergeData message,
-            boolean returnSerialized) {
+    private void mergeData(MergeData message, boolean returnSerialized) {
         LOG.debug("mergeData at path : {}", message.getPath());
+        if (checkClosed()) {
+            return;
+        }
 
-        modification.addModification(
-                new MergeModification(message.getPath(), message.getData(), getSchemaContext()));
+        compositeModification.addModification(
+                new MergeModification(message.getPath(), message.getData()));
 
         try {
-            transaction.merge(message.getPath(), message.getData());
+            transaction.getSnapshot().merge(message.getPath(), message.getData());
             MergeDataReply mergeDataReply = MergeDataReply.INSTANCE;
             getSender().tell(returnSerialized ? mergeDataReply.toSerializable(message.getVersion()) :
                 mergeDataReply, getSelf());
@@ -122,30 +174,32 @@ public class ShardWriteTransaction extends ShardTransaction {
         }
     }
 
-    private void deleteData(DOMStoreWriteTransaction transaction, DeleteData message,
-            boolean returnSerialized) {
+    private void deleteData(DeleteData message, boolean returnSerialized) {
         LOG.debug("deleteData at path : {}", message.getPath());
+        if (checkClosed()) {
+            return;
+        }
 
-        modification.addModification(new DeleteModification(message.getPath()));
+        compositeModification.addModification(new DeleteModification(message.getPath()));
         try {
-            transaction.delete(message.getPath());
-            DeleteDataReply deleteDataReply = new DeleteDataReply();
-            getSender().tell(returnSerialized ? deleteDataReply.toSerializable() : deleteDataReply,
-                getSelf());
-        }catch(Exception e){
+            transaction.getSnapshot().delete(message.getPath());
+            DeleteDataReply deleteDataReply = DeleteDataReply.INSTANCE;
+            getSender().tell(returnSerialized ? deleteDataReply.toSerializable(message.getVersion()) :
+                deleteDataReply, getSelf());
+        } catch(Exception e) {
             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
         }
     }
 
-    private void readyTransaction(DOMStoreWriteTransaction transaction, boolean returnSerialized) {
+    private void readyTransaction(boolean returnSerialized, boolean doImmediateCommit) {
         String transactionID = getTransactionID();
 
         LOG.debug("readyTransaction : {}", transactionID);
 
-        DOMStoreThreePhaseCommitCohort cohort =  transaction.ready();
+        ShardDataTreeCohort cohort =  transaction.ready();
 
         getShardActor().forward(new ForwardedReadyTransaction(transactionID, getClientTxVersion(),
-                cohort, modification, returnSerialized), getContext());
+                cohort, compositeModification, returnSerialized, doImmediateCommit), getContext());
 
         // The shard will handle the commit from here so we're no longer needed - self-destruct.
         getSelf().tell(PoisonPill.getInstance(), getSelf());

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