Bug 4564: Implement GetSnapshot message in RaftActor

[controller.git] / opendaylight / md-sal / sal-akka-raft / src / main / java / org / opendaylight / controller / cluster / raft / ImmutableElectionTerm.java

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ImmutableElectionTerm.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ImmutableElectionTerm.java
new file mode 100644 (file)
index 0000000..2760b48
--- /dev/null
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ImmutableElectionTerm.java
@@ -0,0 +1,52 @@
+/*
+ * 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,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.cluster.raft;
+
+/**
+ * Immutable implementation of ElectionTerm.
+ *
+ * @author Thomas Pantelis
+ */
+public class ImmutableElectionTerm implements ElectionTerm {
+    private final long currentTerm;
+    private final String votedFor;
+
+    private ImmutableElectionTerm(long currentTerm, String votedFor) {
+        this.currentTerm = currentTerm;
+        this.votedFor = votedFor;
+    }
+
+    @Override
+    public long getCurrentTerm() {
+        return currentTerm;
+    }
+
+    @Override
+    public String getVotedFor() {
+        return votedFor;
+    }
+
+    @Override
+    public void update(long currentTerm, String votedFor) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void updateAndPersist(long currentTerm, String votedFor) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public String toString() {
+        return "ImmutableElectionTerm [currentTerm=" + currentTerm + ", votedFor=" + votedFor + "]";
+    }
+
+    public static ElectionTerm copyOf(ElectionTerm from) {
+        return new ImmutableElectionTerm(from.getCurrentTerm(), from.getVotedFor());
+    }
+}