/** First get should try and use a shard that exists on a local node for better performance */
private void performFirst() {
if (shardsIt == null) {
// just execute it on the local node
if (internalRequest.request().operationThreaded()) {
internalRequest.request().beforeLocalFork();
threadPool
.executor(executor())
.execute(
new Runnable() {
@Override
public void run() {
try {
Response response = shardOperation(internalRequest.request(), null);
listener.onResponse(response);
} catch (Throwable e) {
onFailure(null, e);
}
}
});
return;
} else {
try {
final Response response = shardOperation(internalRequest.request(), null);
listener.onResponse(response);
return;
} catch (Throwable e) {
onFailure(null, e);
}
}
return;
}
if (internalRequest.request().preferLocalShard()) {
boolean foundLocal = false;
ShardRouting shardX;
while ((shardX = shardsIt.nextOrNull()) != null) {
final ShardRouting shard = shardX;
if (shard.currentNodeId().equals(nodes.localNodeId())) {
foundLocal = true;
if (internalRequest.request().operationThreaded()) {
internalRequest.request().beforeLocalFork();
threadPool
.executor(executor())
.execute(
new Runnable() {
@Override
public void run() {
try {
Response response =
shardOperation(internalRequest.request(), shard.shardId());
listener.onResponse(response);
} catch (Throwable e) {
shardsIt.reset();
onFailure(shard, e);
}
}
});
return;
} else {
try {
final Response response =
shardOperation(internalRequest.request(), shard.shardId());
listener.onResponse(response);
return;
} catch (Throwable e) {
shardsIt.reset();
onFailure(shard, e);
}
}
}
}
if (!foundLocal) {
// no local node get, go remote
shardsIt.reset();
perform(null);
}
} else {
perform(null);
}
}
