void performReplicas(final PrimaryResponse<Response, ReplicaRequest> response) {
if (ignoreReplicas() || shardIt.size() == 1 /* no replicas */) {
postPrimaryOperation(request, response);
listener.onResponse(response.response());
return;
}
// initialize the counter
int replicaCounter = shardIt.assignedReplicasIncludingRelocating();
if (replicaCounter == 0) {
postPrimaryOperation(request, response);
listener.onResponse(response.response());
return;
}
if (replicationType == ReplicationType.ASYNC) {
postPrimaryOperation(request, response);
// async replication, notify the listener
listener.onResponse(response.response());
// now, trick the counter so it won't decrease to 0 and notify the listeners
replicaCounter = Integer.MIN_VALUE;
}
// we add one to the replica count to do the postPrimaryOperation
replicaCounter++;
AtomicInteger counter = new AtomicInteger(replicaCounter);
shardIt.reset(); // reset the iterator
ShardRouting shard;
while ((shard = shardIt.nextOrNull()) != null) {
// if its unassigned, nothing to do here...
if (shard.unassigned()) {
continue;
}
// if the shard is primary and relocating, add one to the counter since we perform it on the
// replica as well
// (and we already did it on the primary)
boolean doOnlyOnRelocating = false;
if (shard.primary()) {
if (shard.relocating()) {
doOnlyOnRelocating = true;
} else {
continue;
}
}
// we index on a replica that is initializing as well since we might not have got the event
// yet that it was started. We will get an exception IllegalShardState exception if its not
// started
// and that's fine, we will ignore it
if (!doOnlyOnRelocating) {
performOnReplica(response, counter, shard, shard.currentNodeId());
}
if (shard.relocating()) {
performOnReplica(response, counter, shard, shard.relocatingNodeId());
}
}
// now do the postPrimary operation, and check if the listener needs to be invoked
postPrimaryOperation(request, response);
// we also invoke here in case replicas finish before postPrimaryAction does
if (counter.decrementAndGet() == 0) {
listener.onResponse(response.response());
}
}
