@Override
public int compare(Iv2RepairLogResponseMessage o1, Iv2RepairLogResponseMessage o2) {
if (o1.getHandle() < o2.getHandle()) {
return -1;
} else if (o1.getHandle() > o2.getHandle()) {
return 1;
}
return 0;
}
/** Process a new repair log response */
@Override
public void deliver(VoltMessage message) {
if (message instanceof Iv2RepairLogResponseMessage) {
Iv2RepairLogResponseMessage response = (Iv2RepairLogResponseMessage) message;
if (response.getRequestId() != m_requestId) {
tmLog.debug(
m_whoami
+ "rejecting stale repair response."
+ " Current request id is: "
+ m_requestId
+ " Received response for request id: "
+ response.getRequestId());
return;
}
ReplicaRepairStruct rrs = m_replicaRepairStructs.get(response.m_sourceHSId);
if (rrs.m_expectedResponses < 0) {
tmLog.debug(
m_whoami
+ "collecting "
+ response.getOfTotal()
+ " repair log entries from "
+ CoreUtils.hsIdToString(response.m_sourceHSId));
}
// Long.MAX_VALUE has rejoin semantics
if (response.getHandle() != Long.MAX_VALUE) {
m_maxSeenTxnId = Math.max(m_maxSeenTxnId, response.getHandle());
}
if (response.getPayload() != null) {
m_repairLogUnion.add(response);
if (tmLog.isTraceEnabled()) {
tmLog.trace(
m_whoami
+ " collected from "
+ CoreUtils.hsIdToString(response.m_sourceHSId)
+ ", message: "
+ response.getPayload());
}
}
if (rrs.update(response)) {
tmLog.debug(
m_whoami
+ "collected "
+ rrs.m_receivedResponses
+ " responses for "
+ rrs.m_expectedResponses
+ " repair log entries from "
+ CoreUtils.hsIdToString(response.m_sourceHSId));
if (areRepairLogsComplete()) {
repairSurvivors();
}
}
}
}
/** Send missed-messages to survivors. */
public void repairSurvivors() {
// cancel() and repair() must be synchronized by the caller (the deliver lock,
// currently). If cancelled and the last repair message arrives, don't send
// out corrections!
if (this.m_promotionResult.isCancelled()) {
tmLog.debug(m_whoami + "Skipping repair message creation for cancelled Term.");
return;
}
int queued = 0;
tmLog.debug(m_whoami + "received all repair logs and is repairing surviving replicas.");
for (Iv2RepairLogResponseMessage li : m_repairLogUnion) {
List<Long> needsRepair = new ArrayList<Long>(5);
for (Entry<Long, ReplicaRepairStruct> entry : m_replicaRepairStructs.entrySet()) {
if (entry.getValue().needs(li.getHandle())) {
++queued;
tmLog.debug(
m_whoami
+ "repairing "
+ CoreUtils.hsIdToString(entry.getKey())
+ ". Max seen "
+ entry.getValue().m_maxSpHandleSeen
+ ". Repairing with "
+ li.getHandle());
needsRepair.add(entry.getKey());
}
}
if (!needsRepair.isEmpty()) {
if (tmLog.isTraceEnabled()) {
tmLog.trace(
m_whoami
+ "repairing: "
+ CoreUtils.hsIdCollectionToString(needsRepair)
+ " with message: "
+ li.getPayload());
}
m_mailbox.repairReplicasWith(needsRepair, li.getPayload());
}
}
tmLog.debug(m_whoami + "finished queuing " + queued + " replica repair messages.");
m_promotionResult.done(m_maxSeenTxnId);
}
// update counters and return the number of outstanding messages.
boolean update(Iv2RepairLogResponseMessage response) {
m_receivedResponses++;
m_expectedResponses = response.getOfTotal();
m_maxSpHandleSeen = Math.max(m_maxSpHandleSeen, response.getHandle());
return logsComplete();
}