package org.opendaylight.controller.cluster.raft.behaviors;
import akka.actor.ActorRef;
+import akka.event.LoggingAdapter;
import com.google.protobuf.ByteString;
import org.opendaylight.controller.cluster.raft.RaftActorContext;
import org.opendaylight.controller.cluster.raft.RaftState;
public class Follower extends AbstractRaftActorBehavior {
private ByteString snapshotChunksCollected = ByteString.EMPTY;
+ private final LoggingAdapter LOG;
+
public Follower(RaftActorContext context) {
super(context);
+ LOG = context.getLogger();
+
scheduleElection(electionDuration());
}
AppendEntries appendEntries) {
if(appendEntries.getEntries() != null && appendEntries.getEntries().size() > 0) {
- context.getLogger()
- .debug(appendEntries.toString());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug(appendEntries.toString());
+ }
}
// TODO : Refactor this method into a bunch of smaller methods
// an entry at prevLogIndex and this follower has no entries in
// it's log.
- context.getLogger().debug(
- "The followers log is empty and the senders prevLogIndex is {}",
- appendEntries.getPrevLogIndex());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("The followers log is empty and the senders prevLogIndex is {}",
+ appendEntries.getPrevLogIndex());
+ }
} else if (lastIndex() > -1
&& appendEntries.getPrevLogIndex() != -1
// The follower's log is out of sync because the Leader's
// prevLogIndex entry was not found in it's log
- context.getLogger().debug(
- "The log is not empty but the prevLogIndex {} was not found in it",
- appendEntries.getPrevLogIndex());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("The log is not empty but the prevLogIndex {} was not found in it",
+ appendEntries.getPrevLogIndex());
+ }
} else if (lastIndex() > -1
&& previousEntry != null
// prevLogIndex entry does exist in the follower's log but it has
// a different term in it
- context.getLogger().debug(
- "Cannot append entries because previous entry term {} is not equal to append entries prevLogTerm {}"
- , previousEntry.getTerm()
- , appendEntries.getPrevLogTerm());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug(
+ "Cannot append entries because previous entry term {} is not equal to append entries prevLogTerm {}"
+ , previousEntry.getTerm()
+ , appendEntries.getPrevLogTerm());
+ }
} else {
outOfSync = false;
}
if (outOfSync) {
// We found that the log was out of sync so just send a negative
// reply and return
- context.getLogger().debug("Follower is out-of-sync, " +
- "so sending negative reply, lastIndex():{}, lastTerm():{}",
- lastIndex(), lastTerm());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Follower is out-of-sync, " +
+ "so sending negative reply, lastIndex():{}, lastTerm():{}",
+ lastIndex(), lastTerm()
+ );
+ }
sender.tell(
new AppendEntriesReply(context.getId(), currentTerm(), false,
lastIndex(), lastTerm()), actor()
if (appendEntries.getEntries() != null
&& appendEntries.getEntries().size() > 0) {
- context.getLogger().debug(
- "Number of entries to be appended = " + appendEntries
- .getEntries().size()
- );
+ if(LOG.isDebugEnabled()) {
+ LOG.debug(
+ "Number of entries to be appended = " + appendEntries
+ .getEntries().size()
+ );
+ }
// 3. If an existing entry conflicts with a new one (same index
// but different terms), delete the existing entry and all that
continue;
}
- context.getLogger().debug(
- "Removing entries from log starting at "
- + matchEntry.getIndex()
- );
+ if(LOG.isDebugEnabled()) {
+ LOG.debug(
+ "Removing entries from log starting at "
+ + matchEntry.getIndex()
+ );
+ }
// Entries do not match so remove all subsequent entries
context.getReplicatedLog()
}
}
- context.getLogger().debug(
- "After cleanup entries to be added from = " + (addEntriesFrom
- + lastIndex())
- );
+ if(LOG.isDebugEnabled()) {
+ context.getLogger().debug(
+ "After cleanup entries to be added from = " + (addEntriesFrom
+ + lastIndex())
+ );
+ }
// 4. Append any new entries not already in the log
for (int i = addEntriesFrom;
.appendAndPersist(appendEntries.getEntries().get(i));
}
- context.getLogger().debug(
- "Log size is now " + context.getReplicatedLog().size());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Log size is now " + context.getReplicatedLog().size());
+ }
}
context.getReplicatedLog().lastIndex()));
if (prevCommitIndex != context.getCommitIndex()) {
- context.getLogger()
- .debug("Commit index set to " + context.getCommitIndex());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Commit index set to " + context.getCommitIndex());
+ }
}
// If commitIndex > lastApplied: increment lastApplied, apply
// check if there are any entries to be applied. last-applied can be equal to last-index
if (appendEntries.getLeaderCommit() > context.getLastApplied() &&
context.getLastApplied() < lastIndex()) {
- context.getLogger().debug("applyLogToStateMachine, " +
- "appendEntries.getLeaderCommit():{}," +
- "context.getLastApplied():{}, lastIndex():{}",
- appendEntries.getLeaderCommit(), context.getLastApplied(), lastIndex());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("applyLogToStateMachine, " +
+ "appendEntries.getLeaderCommit():{}," +
+ "context.getLastApplied():{}, lastIndex():{}",
+ appendEntries.getLeaderCommit(), context.getLastApplied(), lastIndex()
+ );
+ }
+
applyLogToStateMachine(appendEntries.getLeaderCommit());
}
}
private void handleInstallSnapshot(ActorRef sender, InstallSnapshot installSnapshot) {
- context.getLogger().debug("InstallSnapshot received by follower " +
- "datasize:{} , Chunk:{}/{}", installSnapshot.getData().size(),
- installSnapshot.getChunkIndex(), installSnapshot.getTotalChunks());
+
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("InstallSnapshot received by follower " +
+ "datasize:{} , Chunk:{}/{}", installSnapshot.getData().size(),
+ installSnapshot.getChunkIndex(), installSnapshot.getTotalChunks()
+ );
+ }
try {
if (installSnapshot.getChunkIndex() == installSnapshot.getTotalChunks()) {
} else {
// we have more to go
snapshotChunksCollected = snapshotChunksCollected.concat(installSnapshot.getData());
- context.getLogger().debug("Chunk={},snapshotChunksCollected.size:{}",
- installSnapshot.getChunkIndex(), snapshotChunksCollected.size());
+
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("Chunk={},snapshotChunksCollected.size:{}",
+ installSnapshot.getChunkIndex(), snapshotChunksCollected.size());
+ }
}
sender.tell(new InstallSnapshotReply(