int Sender::IssueRPC(int64_t start_realtime_us) {
_main_cntl->_current_call.need_feedback = false;
LoadBalancer::SelectIn sel_in = { start_realtime_us,
true,
_main_cntl->has_request_code(),
_main_cntl->_request_code,
_main_cntl->_accessed };
ChannelBalancer::SelectOut sel_out;
const int rc = static_cast<ChannelBalancer*>(_main_cntl->_lb.get())
->SelectChannel(sel_in, &sel_out);
if (rc != 0) {
_main_cntl->SetFailed(rc, "Fail to select channel, %s", berror(rc));
return -1;
}
DLOG(INFO) << "Selected channel=" << sel_out.channel() << ", size="
<< (_main_cntl->_accessed ? _main_cntl->_accessed->size() : 0);
_main_cntl->_current_call.need_feedback = sel_out.need_feedback;
_main_cntl->_current_call.peer_id = sel_out.fake_sock->id();
Resource r = PopFree();
if (r.sub_done == NULL) {
CHECK(false) << "Impossible!";
_main_cntl->SetFailed("Impossible happens");
return -1;
}
r.sub_done->_cid = _main_cntl->current_id();
r.sub_done->_peer_id = sel_out.fake_sock->id();
Controller* sub_cntl = &r.sub_done->_cntl;
// No need to count timeout. We already managed timeout in schan. If
// timeout occurs, sub calls are canceled with ERPCTIMEDOUT.
sub_cntl->_timeout_ms = -1;
// Inherit following fields of _main_cntl.
// TODO(gejun): figure out a better way to maintain these fields.
sub_cntl->set_connection_type(_main_cntl->connection_type());
sub_cntl->set_type_of_service(_main_cntl->_tos);
sub_cntl->set_request_compress_type(_main_cntl->request_compress_type());
sub_cntl->set_log_id(_main_cntl->log_id());
sub_cntl->set_request_code(_main_cntl->request_code());
// Forward request attachment to the subcall
sub_cntl->request_attachment().append(_main_cntl->request_attachment());
sel_out.channel()->CallMethod(_main_cntl->_method,
&r.sub_done->_cntl,
_request,
r.response,
r.sub_done);
return 0;
}
//--------------------------------------------------------------------------------
void* CFreePool::Alloc()
{
return PopFree();
}
