BUG-2255: introduce PingPongDataBroker

[controller.git] / opendaylight / md-sal / sal-dom-broker / src / main / java / org / opendaylight / controller / md / sal / dom / broker / impl / PingPongFuture.java

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongFuture.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongFuture.java
new file mode 100644 (file)
index 0000000..1dfc607
--- /dev/null
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongFuture.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2014 Cisco 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,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.md.sal.dom.broker.impl;
+
+import com.google.common.base.Preconditions;
+import com.google.common.util.concurrent.AbstractCheckedFuture;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+
+/**
+ * A {@link Future} used to report the status of an future {@link java.util.concurrent.Future}.
+ */
+final class PingPongFuture extends AbstractCheckedFuture<Void, TransactionCommitFailedException> {
+    protected PingPongFuture(final ListenableFuture<Void> delegate) {
+        super(delegate);
+    }
+
+    @Override
+    protected TransactionCommitFailedException mapException(final Exception e) {
+        Preconditions.checkArgument(e instanceof TransactionCommitFailedException);
+        return (TransactionCommitFailedException) e;
+    }
+}