void ResponseTask::operator()() {
Json::Value response;
if (getDependencyCount() > _resultTaskIndex) {
response = generateResponseJson();
}
size_t status = 200;
if (!_error_messages.empty()) {
Json::Value errors;
for (const auto& msg : _error_messages) {
errors.append(Json::Value(msg));
}
response["error"] = errors;
status = 500;
}
LOG4CXX_DEBUG(_logger, response);
Json::FastWriter fw;
if (_group_commit) {
io::GroupCommitter::getInstance().push(
std::tuple<net::AbstractConnection*, size_t, std::string>(connection, status, fw.write(response)));
} else {
connection->respond(fw.write(response), status);
}
}
std::shared_ptr<PlanOperation> ResponseTask::getResultTask() {
// FIXME not thread safe!
if (getDependencyCount() > _resultTaskIndex) {
return std::dynamic_pointer_cast<PlanOperation>(_dependencies[_resultTaskIndex]);
}
return nullptr;
}
void ResponseTask::operator()() {
epoch_t responseStart = get_epoch_nanoseconds();
Json::Value response;
if (getDependencyCount() > 0) {
PapiTracer pt;
pt.addEvent("PAPI_TOT_CYC");
pt.start();
auto predecessor = getResultTask();
const auto& result = predecessor->getResultTable();
if (predecessor->getState() != OpFail) {
if (result) {
// Make header
Json::Value json_header(Json::arrayValue);
for (unsigned col = 0; col < result->columnCount(); ++col) {
Json::Value colname(result->nameOfColumn(col));
json_header.append(colname);
}
// Copy the complete result
response["real_size"] = result->size();
response["rows"] = generateRowsJson(result, _transmitLimit);
response["header"] = json_header;
}
// Copy Performance Data
Json::Value json_perf(Json::arrayValue);
for (const auto & attr: performance_data) {
Json::Value element;
element["papi_event"] = Json::Value(attr->papiEvent);
element["duration"] = Json::Value((Json::UInt64) attr->duration);
element["data"] = Json::Value((Json::UInt64) attr->data);
element["name"] = Json::Value(attr->name);
element["id"] = Json::Value(attr->operatorId);
element["startTime"] = Json::Value((double)(attr->startTime - queryStart) / 1000000);
element["endTime"] = Json::Value((double)(attr->endTime - queryStart) / 1000000);
element["executingThread"] = Json::Value(attr->executingThread);
json_perf.append(element);
}
pt.stop();
Json::Value responseElement;
responseElement["duration"] = Json::Value((Json::UInt64) pt.value("PAPI_TOT_CYC"));
responseElement["name"] = Json::Value("ResponseTask");
responseElement["id"] = Json::Value("respond");
responseElement["startTime"] = Json::Value((double)(responseStart - queryStart) / 1000000);
responseElement["endTime"] = Json::Value((double)(get_epoch_nanoseconds() - queryStart) / 1000000);
std::string threadId = boost::lexical_cast<std::string>(std::this_thread::get_id());
responseElement["executingThread"] = Json::Value(threadId);
json_perf.append(responseElement);
response["performanceData"] = json_perf;
} else {
LOG4CXX_ERROR(_logger, "Error during plan execution: " << predecessor->getErrorMessage());
response["error"] = predecessor->getErrorMessage();
}
LOG4CXX_DEBUG(_logger, "Table Use Count: " << result.use_count());
} else {
response["error"] = "Query parsing failed, see server error log";
}
connection->respond(response.toStyledString());
}
std::shared_ptr<_PlanOperation> ResponseTask::getResultTask() {
if (getDependencyCount() > 0) {
return std::dynamic_pointer_cast<_PlanOperation>(_dependencies[0]);
}
return nullptr;
}