tdlight/td/telegram/ClientJson.cpp
levlam 407a8442f8 Fix null @extra in JSON interface.
GitOrigin-RevId: 1a470608d7cfbf58b55952eb3162e54d7ec245b7
2018-05-20 16:16:16 +03:00

97 lines
2.9 KiB
C++

//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/telegram/ClientJson.h"
#include "td/telegram/td_api.h"
#include "td/telegram/td_api_json.h"
#include "td/tl/tl_json.h"
#include "td/utils/format.h"
#include "td/utils/JsonBuilder.h"
#include "td/utils/logging.h"
#include "td/utils/Status.h"
namespace td {
Result<Client::Request> ClientJson::to_request(Slice request) {
auto request_str = request.str();
TRY_RESULT(json_value, json_decode(request_str));
if (json_value.type() != JsonValue::Type::Object) {
return Status::Error("Expected an Object");
}
std::uint64_t extra_id = extra_id_.fetch_add(1, std::memory_order_relaxed);
if (has_json_object_field(json_value.get_object(), "@extra")) {
std::lock_guard<std::mutex> guard(mutex_);
extra_[extra_id] = json_encode<string>(
get_json_object_field(json_value.get_object(), "@extra", JsonValue::Type::Null).move_as_ok());
}
td_api::object_ptr<td_api::Function> func;
TRY_STATUS(from_json(func, json_value));
return Client::Request{extra_id, std::move(func)};
}
std::string ClientJson::from_response(Client::Response response) {
auto str = json_encode<string>(ToJson(static_cast<td_api::Object &>(*response.object)));
CHECK(!str.empty() && str.back() == '}');
std::string extra;
if (response.id != 0) {
std::lock_guard<std::mutex> guard(mutex_);
auto it = extra_.find(response.id);
if (it != extra_.end()) {
extra = std::move(it->second);
extra_.erase(it);
}
}
if (!extra.empty()) {
str.pop_back();
str.reserve(str.size() + 10 + extra.size());
str += ",\"@extra\":";
str += extra;
str += "}";
}
return str;
}
TD_THREAD_LOCAL std::string *ClientJson::current_output_;
CSlice ClientJson::store_string(std::string str) {
init_thread_local<std::string>(ClientJson::current_output_);
*current_output_ = std::move(str);
return *current_output_;
}
void ClientJson::send(Slice request) {
auto r_request = to_request(request);
if (r_request.is_error()) {
LOG(ERROR) << "Failed to parse " << tag("request", format::escaped(request)) << " " << r_request.error();
return;
}
client_.send(r_request.move_as_ok());
}
CSlice ClientJson::receive(double timeout) {
auto response = client_.receive(timeout);
if (!response.object) {
return {};
}
return store_string(from_response(std::move(response)));
}
CSlice ClientJson::execute(Slice request) {
auto r_request = to_request(request);
if (r_request.is_error()) {
LOG(ERROR) << "Failed to parse " << tag("request", format::escaped(request)) << " " << r_request.error();
return {};
}
return store_string(from_response(Client::execute(r_request.move_as_ok())));
}
} // namespace td