Do not leak DataTree from backend actor

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/LocalTransactionFactoryImpl.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/LocalTransactionFactoryImpl.java
index 7c05fef87fc6013aebeae533697fa6309bd9f8a8..8c8444902550230d76d11e19763f5f93f3c2ba20 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/LocalTransactionFactoryImpl.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/LocalTransactionFactoryImpl.java
@@ -7,21 +7,21 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
 import akka.actor.ActorSelection;
-import com.google.common.base.Preconditions;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
-import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
-import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedTransactions;
-import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedWriteTransaction;
-import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedWriteTransaction.TransactionReadyPrototype;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
+import org.opendaylight.controller.cluster.datastore.utils.ActorUtils;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadWriteTransaction;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreWriteTransaction;
+import org.opendaylight.mdsal.dom.spi.store.SnapshotBackedTransactions;
+import org.opendaylight.mdsal.dom.spi.store.SnapshotBackedWriteTransaction;
+import org.opendaylight.mdsal.dom.spi.store.SnapshotBackedWriteTransaction.TransactionReadyPrototype;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.ReadOnlyDataTree;
 
 /**
  * {@link LocalTransactionFactory} for instantiating backing transactions which are
@@ -32,16 +32,17 @@ final class LocalTransactionFactoryImpl extends TransactionReadyPrototype<Transa
         implements LocalTransactionFactory {
 
     private final ActorSelection leader;
-    private final DataTree dataTree;
-    private final ActorContext actorContext;
+    private final ReadOnlyDataTree dataTree;
+    private final ActorUtils actorUtils;
 
-    LocalTransactionFactoryImpl(final ActorContext actorContext, final ActorSelection leader, final DataTree dataTree) {
-        this.leader = Preconditions.checkNotNull(leader);
-        this.dataTree = Preconditions.checkNotNull(dataTree);
-        this.actorContext = actorContext;
+    LocalTransactionFactoryImpl(final ActorUtils actorUtils, final ActorSelection leader,
+            final ReadOnlyDataTree dataTree) {
+        this.leader = requireNonNull(leader);
+        this.dataTree = requireNonNull(dataTree);
+        this.actorUtils = actorUtils;
     }
 
-    DataTree getDataTree() {
+    ReadOnlyDataTree getDataTree() {
         return dataTree;
     }
 
@@ -66,27 +67,22 @@ final class LocalTransactionFactoryImpl extends TransactionReadyPrototype<Transa
     }
 
     @Override
-    protected DOMStoreThreePhaseCommitCohort transactionReady(final SnapshotBackedWriteTransaction<TransactionIdentifier> tx,
-            final DataTreeModification tree) {
-        return new LocalThreePhaseCommitCohort(actorContext, leader, tx, tree);
+    protected DOMStoreThreePhaseCommitCohort transactionReady(
+            final SnapshotBackedWriteTransaction<TransactionIdentifier> tx,
+            final DataTreeModification tree,
+            final Exception readyError) {
+        return new LocalThreePhaseCommitCohort(actorUtils, leader, tx, tree, readyError);
     }
 
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings({"unchecked", "checkstyle:IllegalCatch"})
     @Override
-    public LocalThreePhaseCommitCohort onTransactionReady(@Nonnull DOMStoreWriteTransaction tx,
-            @Nullable Exception operationError) {
-        if(operationError != null) {
-            return new LocalThreePhaseCommitCohort(actorContext, leader,
+    public LocalThreePhaseCommitCohort onTransactionReady(DOMStoreWriteTransaction tx, Exception operationError) {
+        checkArgument(tx instanceof SnapshotBackedWriteTransaction);
+        if (operationError != null) {
+            return new LocalThreePhaseCommitCohort(actorUtils, leader,
                     (SnapshotBackedWriteTransaction<TransactionIdentifier>)tx, operationError);
         }
 
-        try {
-            return (LocalThreePhaseCommitCohort) tx.ready();
-        } catch (Exception e) {
-            // Unfortunately we need to cast to SnapshotBackedWriteTransaction here as it's required by
-            // LocalThreePhaseCommitCohort.
-            return new LocalThreePhaseCommitCohort(actorContext, leader,
-                    (SnapshotBackedWriteTransaction<TransactionIdentifier>)tx, e);
-        }
+        return (LocalThreePhaseCommitCohort) tx.ready();
     }
 }