Bug 5419: Persist log entries asycnhronously

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

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLog.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLog.java
index cd70812d9d38d9c1f112a3c9978dfe4ee9d31e8c..6e34ff0393e8840ea70e0b7d398cc155c257d294 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLog.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLog.java
@@ -91,16 +91,14 @@ public interface ReplicatedLog {
      * Appends an entry to the in-memory log and persists it as well.
      *
      * @param replicatedLogEntry the entry to append
-     */
-    void appendAndPersist(final ReplicatedLogEntry replicatedLogEntry);
-
-    /**
-     * Appends an entry to the in-memory log and persists it as well.
-     *
-     * @param replicatedLogEntry the entry to append
-     * @param callback the Procedure to be notified when persistence is complete.
-     */
-    void appendAndPersist(ReplicatedLogEntry replicatedLogEntry, Procedure<ReplicatedLogEntry> callback);
+     * @param callback the Procedure to be notified when persistence is complete (optional).
+     * @param doAsync if true, the persistent actor can receive subsequent messages to process in between the persist
+     *        call and the execution of the associated callback. If false, subsequent messages are stashed and get
+     *        delivered after persistence is complete and the associated callback is executed.
+     * @return true if the entry was successfully appended, false otherwise.
+     */
+    boolean appendAndPersist(@Nonnull ReplicatedLogEntry replicatedLogEntry,
+            @Nullable Procedure<ReplicatedLogEntry> callback, boolean doAsync);
 
     /**
      * Returns a list of log entries starting from the given index to the end of the log.