Migrate DatastoreContextIntrospectorFactory to OSGi DS

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / FrontendReadOnlyTransaction.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendReadOnlyTransaction.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendReadOnlyTransaction.java
index 071fded649adf0dd275602864fa51a3d22eab6c6..512e9f4957d550486f1d0f220c694dd7ddcb5e68 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendReadOnlyTransaction.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/FrontendReadOnlyTransaction.java
@@ -7,16 +7,17 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import javax.annotation.Nullable;
-import javax.annotation.concurrent.NotThreadSafe;
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
+import java.util.Optional;
 import org.opendaylight.controller.cluster.access.commands.ExistsTransactionRequest;
 import org.opendaylight.controller.cluster.access.commands.ExistsTransactionSuccess;
+import org.opendaylight.controller.cluster.access.commands.ModifyTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.ModifyTransactionSuccess;
+import org.opendaylight.controller.cluster.access.commands.PersistenceProtocol;
 import org.opendaylight.controller.cluster.access.commands.ReadTransactionRequest;
 import org.opendaylight.controller.cluster.access.commands.ReadTransactionSuccess;
-import org.opendaylight.controller.cluster.access.commands.TransactionAbortRequest;
-import org.opendaylight.controller.cluster.access.commands.TransactionAbortSuccess;
 import org.opendaylight.controller.cluster.access.commands.TransactionRequest;
 import org.opendaylight.controller.cluster.access.commands.TransactionSuccess;
 import org.opendaylight.controller.cluster.access.concepts.RequestEnvelope;
@@ -27,11 +28,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * Read-only frontend transaction state as observed by the shard leader.
+ * Read-only frontend transaction state as observed by the shard leader. This class is NOT thread-safe.
  *
  * @author Robert Varga
  */
-@NotThreadSafe
 final class FrontendReadOnlyTransaction extends FrontendTransaction {
     private static final Logger LOG = LoggerFactory.getLogger(FrontendReadOnlyTransaction.class);
 
@@ -40,7 +40,7 @@ final class FrontendReadOnlyTransaction extends FrontendTransaction {
     private FrontendReadOnlyTransaction(final AbstractFrontendHistory history,
             final ReadOnlyShardDataTreeTransaction transaction) {
         super(history, transaction.getIdentifier());
-        this.openTransaction = Preconditions.checkNotNull(transaction);
+        this.openTransaction = requireNonNull(transaction);
     }
 
     static FrontendReadOnlyTransaction create(final AbstractFrontendHistory history,
@@ -50,14 +50,14 @@ final class FrontendReadOnlyTransaction extends FrontendTransaction {
 
     // Sequence has already been checked
     @Override
-    @Nullable TransactionSuccess<?> handleRequest(final TransactionRequest<?> request, final RequestEnvelope envelope,
+    TransactionSuccess<?> doHandleRequest(final TransactionRequest<?> request, final RequestEnvelope envelope,
             final long now) throws RequestException {
         if (request instanceof ExistsTransactionRequest) {
             return handleExistsTransaction((ExistsTransactionRequest) request);
         } else if (request instanceof ReadTransactionRequest) {
             return handleReadTransaction((ReadTransactionRequest) request);
-        } else if (request instanceof TransactionAbortRequest) {
-            handleTransactionAbort((TransactionAbortRequest) request, envelope, now);
+        } else if (request instanceof ModifyTransactionRequest) {
+            handleModifyTransaction((ModifyTransactionRequest) request, envelope, now);
             return null;
         } else {
             LOG.warn("Rejecting unsupported request {}", request);
@@ -65,21 +65,28 @@ final class FrontendReadOnlyTransaction extends FrontendTransaction {
         }
     }
 
-    private void handleTransactionAbort(final TransactionAbortRequest request, final RequestEnvelope envelope,
-            final long now) throws RequestException {
-        openTransaction.abort(() -> recordAndSendSuccess(envelope, now, new TransactionAbortSuccess(request.getTarget(),
-            request.getSequence())));
+    @Override
+    void retire() {
+        // No-op
+    }
+
+    private void handleModifyTransaction(final ModifyTransactionRequest request, final RequestEnvelope envelope,
+            final long now) {
+        // The only valid request here is with abort protocol
+        final Optional<PersistenceProtocol> optProto = request.getPersistenceProtocol();
+        checkArgument(optProto.isPresent(), "Commit protocol is missing in %s", request);
+        checkArgument(optProto.get() == PersistenceProtocol.ABORT, "Unsupported commit protocol in %s", request);
+        openTransaction.abort(() -> recordAndSendSuccess(envelope, now,
+            new ModifyTransactionSuccess(request.getTarget(), request.getSequence())));
     }
 
-    private ExistsTransactionSuccess handleExistsTransaction(final ExistsTransactionRequest request)
-            throws RequestException {
+    private ExistsTransactionSuccess handleExistsTransaction(final ExistsTransactionRequest request) {
         final Optional<NormalizedNode<?, ?>> data = openTransaction.getSnapshot().readNode(request.getPath());
         return recordSuccess(request.getSequence(), new ExistsTransactionSuccess(openTransaction.getIdentifier(),
             request.getSequence(), data.isPresent()));
     }
 
-    private ReadTransactionSuccess handleReadTransaction(final ReadTransactionRequest request)
-            throws RequestException {
+    private ReadTransactionSuccess handleReadTransaction(final ReadTransactionRequest request) {
         final Optional<NormalizedNode<?, ?>> data = openTransaction.getSnapshot().readNode(request.getPath());
         return recordSuccess(request.getSequence(), new ReadTransactionSuccess(openTransaction.getIdentifier(),
             request.getSequence(), data));