/**
* Send a copy of a single message request to the partitions given as input If a partition is
* managed by the local HStoreSite, then we will invoke the sendLocal() method. If it is on a
* remote HStoreSite, then we will invoke sendRemote().
*
* @param ts
* @param request
* @param callback
* @param partitions
*/
public void sendMessages(
LocalTransaction ts, T request, RpcCallback<U> callback, PartitionSet partitions) {
// If this flag is true, then we'll invoke the local method
// We want to do this *after* we send out all the messages to the remote sites
// so that we don't have to wait as long for the responses to come back over the network
boolean send_local = false;
boolean site_sent[] = new boolean[this.num_sites];
if (debug.val)
LOG.debug(
String.format(
"Sending %s to %d partitions for %s",
request.getClass().getSimpleName(), partitions.size(), ts));
for (int partition : partitions.values()) {
int dest_site_id = hstore_site.getCatalogContext().getSiteIdForPartitionId(partition);
// Skip this HStoreSite if we're already sent it a message
if (site_sent[dest_site_id]) continue;
if (trace.val)
LOG.trace(
String.format(
"Sending %s message to %s for %s",
request.getClass().getSimpleName(),
HStoreThreadManager.formatSiteName(dest_site_id),
ts));
// Local Partition
if (this.local_site_id == dest_site_id) {
send_local = true;
}
// Remote Partition
else {
HStoreService channel = coordinator.getChannel(dest_site_id);
assert (channel != null) : "Invalid partition id '" + partition + "'";
ProtoRpcController controller = this.getProtoRpcController(ts, dest_site_id);
assert (controller != null)
: "Invalid "
+ request.getClass().getSimpleName()
+ " ProtoRpcController for site #"
+ dest_site_id;
this.sendRemote(channel, controller, request, callback);
}
site_sent[dest_site_id] = true;
} // FOR
// Optimization: We'll invoke sendLocal() after we have sent out
// all of the messages to remote sites
if (send_local) this.sendLocal(ts.getTransactionId(), request, partitions, callback);
}
