Take snapshot after recovery on migrated messages

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

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/ApplyJournalEntries.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/ApplyJournalEntries.java
new file mode 100644 (file)
index 0000000..a21c959
--- /dev/null
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/ApplyJournalEntries.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2016 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.persisted;
+
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.io.Serializable;
+
+/**
+ * This is an internal message that is stored in the akka's persistent journal. During recovery, this
+ * message is used to apply recovered journal entries to the state whose indexes range from the context's
+ * current lastApplied index to "toIndex" contained in the message. This message is sent internally from a
+ * behavior to the RaftActor to persist.
+ *
+ * @author Thomas Pantelis
+ */
+public class ApplyJournalEntries implements Serializable, MigratedSerializable {
+    private static final class Proxy implements Externalizable {
+        private static final long serialVersionUID = 1L;
+
+        private ApplyJournalEntries applyEntries;
+
+        public Proxy() {
+            // For Externalizable
+        }
+
+        Proxy(final ApplyJournalEntries applyEntries) {
+            this.applyEntries = applyEntries;
+        }
+
+        @Override
+        public void writeExternal(final ObjectOutput out) throws IOException {
+            out.writeLong(applyEntries.toIndex);
+         }
+
+        @Override
+        public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
+            applyEntries = new ApplyJournalEntries(in.readLong());
+        }
+
+        private Object readResolve() {
+            return applyEntries;
+        }
+    }
+
+    private static final long serialVersionUID = 1L;
+
+    private final long toIndex;
+    private final boolean migrated;
+
+    private ApplyJournalEntries(final long toIndex, final boolean migrated) {
+        this.toIndex = toIndex;
+        this.migrated = migrated;
+    }
+
+    public ApplyJournalEntries(final long toIndex) {
+        this(toIndex, false);
+    }
+
+    public long getToIndex() {
+        return toIndex;
+    }
+
+    @Override
+    public boolean isMigrated() {
+        return migrated;
+    }
+
+    @Override
+    public Object writeReplace() {
+        return new Proxy(this);
+    }
+
+    @Deprecated
+    public static ApplyJournalEntries createMigrated(final long fromIndex) {
+        return new ApplyJournalEntries(fromIndex, true);
+    }
+
+    @Override
+    public String toString() {
+        return "ApplyJournalEntries [toIndex=" + toIndex + "]";
+    }
+}