int ObMergerRequest::create_rpc_event(ObMergerRpcEvent ** event)
{
int ret = OB_SUCCESS;
/// ObMergerRpcEvent * rpc = new(std::nothrow) ObMergerRpcEvent;
ObMergerRpcEvent * rpc = reinterpret_cast<ObMergerRpcEvent *>(ob_malloc(sizeof(ObMergerRpcEvent),
ObModIds::OB_MS_RPC_EVENT));
if (NULL == rpc)
{
ret = OB_ERROR;
TBSYS_LOG(WARN, "check rpc event allocate failed:rpc[%p]", rpc);
}
else
{
new (rpc) ObMergerRpcEvent;
TBSYS_LOG(DEBUG, "create rpc event succ:request[%lu], event[%lu], ptr[%p]",
request_id_, rpc->get_event_id(), rpc);
ret = rpc->init(request_id_, this);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(WARN, "init rpc event failed:request[%lu], event[%lu], ptr[%p], ret[%d]",
request_id_, rpc->get_event_id(), rpc, ret);
destroy_rpc_event(rpc);
}
else
{
*event = rpc;
}
}
return ret;
}
virtual int scan(const int64_t timeout, const ObServer & server,
const ObScanParam & scan_param, ObMergerRpcEvent & result) const
{
UNUSED(timeout);
UNUSED(server);
UNUSED(scan_param);
result.set_result_code(OB_SUCCESS);
ObScanner &scanner = result.get_result();
ObScannerLoader loader;
loader.load(filename, scanner_section_names[file_idx]);
file_idx = (++file_idx % 6);
loader.get_decoded_scanner(scanner);
TBSYS_LOG(INFO, "+==============DUMP===============+");
scanner.dump();
TBSYS_LOG(INFO, "+=============END DUMP============+");
if(!rpc_events_list_.push_back(&result))
{
TBSYS_LOG(ERROR, "fail to save rpc result");
}
else
{
TBSYS_LOG(INFO, "currently totally %ld results saved....", rpc_events_list_.get_array_index());
TBSYS_LOG(INFO, "a RPC result save to rpc_event_list_");
}
return OB_SUCCESS;
}
int ObMergerRequest::remove_invalid_event_in_finish_queue(const int64_t timeout)
{
int ret = OB_SUCCESS;
int64_t remainder = timeout;
int64_t size = finish_queue_.size();
bool is_valid = false;
ObMergerRpcEvent * event = NULL;
while (remainder > 0 && size > 0)
{
if (OB_SUCCESS == (ret = finish_queue_.pop(remainder, (void *&)event)))
{
if (NULL != event && OB_SUCCESS == event->get_result_code()
&& event->get_session_id() > ObCommonRpcEvent::INVALID_SESSION_ID)
{
terminate_remote_session(event->get_server(), event->get_session_id());
TBSYS_LOG(INFO,"end finished but not process session [client:%ld, session_id:%lu, event_id:%ld]",
event->get_client_id(), event->get_session_id(), event->get_event_id());
}
remove_wait_queue(event, is_valid);
destroy_rpc_event(event);
}
else
{
TBSYS_LOG(WARN, "pop result from finish queue failed:request[%lu], event[%p], ret[%d]",
request_id_, event, ret);
}
size = finish_queue_.size();
}
return ret;
}
int ObMergerGetRequest::get_session_next(const int64_t sub_req_idx,
ObMergerRpcEvent & prev_rpc, const int64_t timeout_us)
{
int err = OB_SUCCESS;
ObMergerRpcEvent *rpc_event = NULL;
if ((OB_SUCCESS == err) && (OB_SUCCESS != (err = ObMergerRequest::create(&rpc_event))))
{
TBSYS_LOG(WARN,"fail to create ObMergerRpcEvent [err:%d]", err);
}
if (OB_SUCCESS == err)
{
if (OB_SUCCESS != (err = get_rpc()->get_session_next(timeout_us,prev_rpc.get_server(),
prev_rpc.get_session_id(), prev_rpc.get_req_type(), *rpc_event)))
{
TBSYS_LOG(WARN,"fail to send request to server [request_id:%lu,err:%d]", get_request_id(),err);
}
else
{
sub_requests_[sub_req_idx].set_last_rpc_event(*rpc_event, prev_rpc.get_session_id());
sub_requests_[sub_req_idx].set_last_svr_ipv4(prev_rpc.get_server().get_ipv4());
TBSYS_LOG(INFO, "session next [request_id:%lu,prev_rpc:%lu,cur_rpc:%lu]", get_request_id(),
prev_rpc.get_event_id(), rpc_event->get_event_id());
}
}
return err;
}
// by the tbnet thread so lightweight
int ObMergerRequest::signal(ObMergerRpcEvent & event)
{
// only push to the finish_queue not check request id or in wait queue
int ret = OB_SUCCESS;
if (request_id_ != event.get_client_id())
{
TBSYS_LOG(INFO , "the event we do not expect from server, "
"event[%ld], client[%ld], current client[%ld], session id[%ld], rcode[%d]",
event.get_event_id(), event.get_client_id(), request_id_,
event.get_session_id(), event.get_result_code());
ret = OB_INVALID_ERROR;
}
else
{
ret = finish_queue_.push(&event);
}
if (ret != OB_SUCCESS)
{
if (OB_INVALID_ERROR != ret)
{
TBSYS_LOG(ERROR, "push to finish queue failed:client[%lu], event[%lu], "
"request[%lu], finish_size[%ld], ret[%d]", event.get_client_id(), event.get_event_id(),
request_id_, finish_queue_.size(), ret);
}
else if (OB_INVALID_ERROR == ret && OB_SUCCESS == event.get_result_code()
&& event.get_session_id() > ObCommonRpcEvent::INVALID_SESSION_ID)
{
terminate_remote_session(event.get_server(), event.get_session_id());
TBSYS_LOG(INFO,"end unexpect session [client:%ld, session_id:%lu]",
event.get_client_id(), event.get_session_id());
}
bool is_valid = false;
remove_wait_queue(&event, is_valid);
destroy_rpc_event(&event);
}
else
{
TBSYS_LOG(DEBUG, "push to finish queue succ:client[%lu], event[%lu], request[%lu]",
event.get_client_id(), event.get_event_id(), request_id_);
}
return ret;
}
int ObGetRequestEvent::setup_new_request(const bool retry, const ObGetParam & get_param)
{
int ret = OB_SUCCESS;
ObMergerRpcEvent * event = NULL;
// step 1. create new rpc event and add to the waiting queue
if (false == check_inner_stat())
{
ret = OB_INNER_STAT_ERROR;
TBSYS_LOG(WARN, "check inner stat failed");
}
else
{
ret = ObMergerRequestEvent::create(&event);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(ERROR, "add new rpc event failed:request[%lu], ret[%d]", get_request_id(), ret);
}
}
// TODO check retry with other cs
UNUSED(retry);
ObMergerTabletLocationList list;
// step 3. select the right cs for request
if ((OB_SUCCESS == ret)) // && (false == retry))
{
ret = get_cache_proxy()->get_tablet_location(get_param[0]->table_id_, get_param[0]->row_key_, list);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(WARN, "get tablet location failed:client[%lu], event[%lu], request[%lu], ret[%d]",
event->get_client_id(), event->get_event_id(), get_request_id(), ret);
}
}
// step 4. send reqeust for get
if (OB_SUCCESS == ret)
{
// TODO access list[0]
event->set_server(list[0].server_.chunkserver_);
ret = get_rpc()->get(get_timeout(), list[0].server_.chunkserver_, get_param, *event);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(ERROR, "check async rpc stub failed:client[%lu], event[%lu], request[%lu], ret[%d]",
event->get_client_id(), event->get_event_id(), get_request_id(), ret);
}
else
{
TBSYS_LOG(DEBUG, "send get param to server succ:client[%lu], event[%lu], request[%lu], "
"get_cell[%ld]", event->get_client_id(), event->get_event_id(), get_request_id(),
get_param.get_cell_size());
}
}
/// if not send succ
if ((event != NULL) && (ret != OB_SUCCESS))
{
uint64_t client_id = event->get_client_id();
uint64_t event_id = event->get_event_id();
int err = ObMergerRequestEvent::destroy(event);
if (err != OB_SUCCESS)
{
TBSYS_LOG(ERROR, "destroy the event failed when rpc send failed:client[%lu], event[%lu], "
"request[%lu], ret[%d], err[%d]", client_id, event_id, get_request_id(), ret, err);
}
else
{
TBSYS_LOG(INFO, "destroy directly succ:client[%lu], event[%lu], request[%lu], ret[%d]",
client_id, event_id, get_request_id(), ret);
}
}
return ret;
}
int ObGetRequestEvent::check_request_finish(ObMergerRpcEvent & event, bool & finish)
{
finish = false;
bool retry = false;
int ret = OB_SUCCESS;
ObGetParam new_param;
int32_t result_code = OB_SUCCESS;
ObScanner & result = event.get_result(result_code);
int64_t timeout = 0;
const ObGetParam * org_param = dynamic_cast<const ObGetParam *>(get_request_param(timeout));
if (NULL == org_param)
{
ret = OB_INPUT_PARAM_ERROR;
TBSYS_LOG(WARN, "check result code error:result[%d], request[%lu], event[%lu], param[%p]",
event.get_result_code(), get_request_id(), event.get_event_id(), org_param);
}
else if (result_code != OB_SUCCESS)
{
// TODO retry next server or delete the cache item and terminate if retry too many times
retry = true;
result.clear();
// set fullfill to true item count = 0 for next get new param
result.set_is_req_fullfilled(true, 0);
TBSYS_LOG(INFO, "check result code failed:result[%d], request[%lu], event[%lu]",
event.get_result_code(), get_request_id(), event.get_event_id());
}
else
{
// right now no duplicated rpc event and all is in-sequence return
// add to result list for iterator
ret = result_list_.push_back(&event);
if (ret != OB_SUCCESS)
{
result.clear();
result.set_is_req_fullfilled(true, 0);
TBSYS_LOG(ERROR, "push the result failed:request[%lu], event[%lu], ret[%d]",
get_request_id(), event.get_event_id(), ret);
}
else
{
FILL_TRACE_LOG("got one result from cs finished_sub_get_count[%d]", result_list_.size());
}
}
// update the returned item count and construct the new param if not finish all
ret = get_next_param(*org_param, result, returned_item_count_, finish, &new_param);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(ERROR, "get next param failed:request[%lu], event[%lu], ret[%d]",
get_request_id(), event.get_event_id(), ret);
}
if ((false == finish) && (OB_SUCCESS == ret))
{
ret = setup_new_request(retry, new_param);
if (ret != OB_SUCCESS)
{
TBSYS_LOG(WARN, "setup new request failed:request[%lu], event[%lu], ret[%d]",
get_request_id(), event.get_event_id(), ret);
}
}
return ret;
}