BUG-5280: implement backend message handling

[controller.git] / opendaylight / md-sal / cds-access-api / src / main / java / org / opendaylight / controller / cluster / access / commands / NotLeaderException.java

diff --git a/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/NotLeaderException.java b/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/NotLeaderException.java
new file mode 100644 (file)
index 0000000..0864cd0
--- /dev/null
+++ b/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/NotLeaderException.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2016 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.cluster.access.commands;
+
+import akka.actor.ActorRef;
+import com.google.common.annotations.Beta;
+import org.opendaylight.controller.cluster.access.concepts.RequestException;
+
+/**
+ * General error raised when the recipient of a Request is not the correct backend to talk to. This typically
+ * means that the backend processing has moved and the frontend needs to run rediscovery and retry the request.
+ *
+ * @author Robert Varga
+ */
+@Beta
+public final class NotLeaderException extends RequestException {
+    private static final long serialVersionUID = 1L;
+
+    public NotLeaderException(final ActorRef me) {
+        super("Actor " + me + " is not the current leader");
+    }
+
+    @Override
+    public boolean isRetriable() {
+        return false;
+    }
+}