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%2FReplicatedLog.java;h=80b7ad90d05dbb1e9fe45ec57a65a44dedfe4463;hb=cbf541448455a7736e8ad54baeb17357a8956026;hp=f12bc9af7357501a9670d72f3ddf45edbfd07def;hpb=a0c5aba42aa36337ff1c6760175918b786897c9e;p=controller.git 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 f12bc9af73..80b7ad90d0 100644 --- 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 @@ -8,6 +8,8 @@ package org.opendaylight.controller.cluster.raft; +import java.util.List; + /** * Represents the ReplicatedLog that needs to be kept in sync by the RaftActor */ @@ -15,8 +17,9 @@ public interface ReplicatedLog { /** * Get a replicated log entry at the specified index * - * @param index - * @return + * @param index the index of the log entry + * @return the ReplicatedLogEntry at index. null if index less than 0 or + * greater than the size of the in-memory journal. */ ReplicatedLogEntry get(long index); @@ -29,15 +32,148 @@ public interface ReplicatedLog { ReplicatedLogEntry last(); /** - * Remove all the entries from the logs >= index * - * @param index + * @return + */ + long lastIndex(); + + /** + * + * @return + */ + long lastTerm(); + + /** + * To be called when we need to remove entries from the in-memory log. + * This method will remove all entries >= index. This method should be used + * during recovery to appropriately trim the log based on persisted + * information + * + * @param index the index of the log entry */ void removeFrom(long index); + + /** + * To be called when we need to remove entries from the in-memory log and we + * need that information persisted to disk. This method will remove all + * entries >= index. + *
+ * The persisted information would then be used during recovery to properly
+ * reconstruct the state of the in-memory replicated log
+ *
+ * @param index the index of the log entry
+ */
+ void removeFromAndPersist(long index);
+
/**
* Append an entry to the log
* @param replicatedLogEntry
*/
void append(ReplicatedLogEntry replicatedLogEntry);
+
+ /**
+ * Optimization method to increase the capacity of the journal log prior to appending entries.
+ *
+ * @param amount the amount to increase by
+ */
+ void increaseJournalLogCapacity(int amount);
+
+ /**
+ *
+ * @param replicatedLogEntry
+ */
+ void appendAndPersist(final ReplicatedLogEntry replicatedLogEntry);
+
+ /**
+ *
+ * @param index the index of the log entry
+ */
+ List