X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-akka-raft%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fraft%2FFollowerLogInformation.java;h=07b6b617aaa862b472fb479be247479e1096f434;hb=d1d24d3742ffcda5e16a1d35e15a5627d5eb05f9;hp=f3de9835385eb0880bb567402f5bb493f8ad3a76;hpb=fe4049d34de103016d11f3a9050853c6380646d3;p=controller.git

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformation.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformation.java
index f3de983538..07b6b617aa 100644
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformation.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformation.java
@@ -5,11 +5,8 @@
  * 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;
 
-import java.util.concurrent.atomic.AtomicLong;
-
 /**
  * The state of the followers log as known by the Leader
  */
@@ -19,47 +16,85 @@ public interface FollowerLogInformation {
      * Increment the value of the nextIndex
      * @return
      */
-    public long incrNextIndex();
+    long incrNextIndex();
 
     /**
      * Decrement the value of the nextIndex
      * @return
      */
-    public long decrNextIndex();
+    long decrNextIndex();
 
     /**
+     * Sets the index of the next log entry for this follower.
      *
      * @param nextIndex
+     * @return true if the new index differed from the current index and the current index was updated, false
+     *              otherwise.
      */
-    void setNextIndex(long nextIndex);
+    boolean setNextIndex(long nextIndex);
 
     /**
      * Increment the value of the matchIndex
      * @return
      */
-    public long incrMatchIndex();
+    long incrMatchIndex();
 
-    public void setMatchIndex(long matchIndex);
+    /**
+     * Sets the index of the highest log entry for this follower.
+     *
+     * @param matchIndex
+     * @return true if the new index differed from the current index and the current index was updated, false
+     *              otherwise.
+     */
+    boolean setMatchIndex(long matchIndex);
 
     /**
      * The identifier of the follower
      * This could simply be the url of the remote actor
      */
-    public String getId();
+    String getId();
 
     /**
      * for each server, index of the next log entry
      * to send to that server (initialized to leader
      *    last log index + 1)
      */
-    public AtomicLong getNextIndex();
+    long getNextIndex();
 
     /**
      * for each server, index of highest log entry
      * known to be replicated on server
      *    (initialized to 0, increases monotonically)
      */
-    public AtomicLong getMatchIndex();
+    long getMatchIndex();
+
+    /**
+     * Checks if the follower is active by comparing the last updated with the duration
+     * @return boolean
+     */
+    boolean isFollowerActive();
+
+    /**
+     * restarts the timeout clock of the follower
+     */
+    void markFollowerActive();
+
+    /**
+     * This will stop the timeout clock
+     */
+    void markFollowerInActive();
+
 
+    /**
+     * This will return the active time of follower, since it was last reset
+     * @return time in milliseconds
+     */
+    long timeSinceLastActivity();
 
+    /**
+     * This method checks if it is ok to replicate
+     *
+     * @return true if it is ok to replicate
+     */
+    boolean okToReplicate();
 }