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ton/tonlib/tonlib/ClientJson.cpp
2019-09-07 14:33:36 +04:00

119 lines
3.8 KiB
C++

/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
*/
#include "tonlib/ClientJson.h"
#include "auto/tl/tonlib_api_json.h"
#include "tl/tl_json.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/JsonBuilder.h"
#include "td/utils/logging.h"
#include "td/utils/port/thread_local.h"
#include "td/utils/Status.h"
#include <utility>
namespace tonlib {
static td::Result<std::pair<tonlib_api::object_ptr<tonlib_api::Function>, std::string>> to_request(td::Slice request) {
auto request_str = request.str();
TRY_RESULT(json_value, td::json_decode(request_str));
if (json_value.type() != td::JsonValue::Type::Object) {
return td::Status::Error("Expected an Object");
}
std::string extra;
if (has_json_object_field(json_value.get_object(), "@extra")) {
extra = td::json_encode<std::string>(
get_json_object_field(json_value.get_object(), "@extra", td::JsonValue::Type::Null).move_as_ok());
}
tonlib_api::object_ptr<tonlib_api::Function> func;
TRY_STATUS(from_json(func, json_value));
return std::make_pair(std::move(func), extra);
}
static std::string from_response(const tonlib_api::Object &object, const td::string &extra) {
auto str = td::json_encode<td::string>(td::ToJson(object));
CHECK(!str.empty() && str.back() == '}');
if (!extra.empty()) {
str.pop_back();
str.reserve(str.size() + 11 + extra.size());
str += ",\"@extra\":";
str += extra;
str += '}';
}
return str;
}
static TD_THREAD_LOCAL std::string *current_output;
static td::CSlice store_string(std::string str) {
td::init_thread_local<std::string>(current_output);
*current_output = std::move(str);
return *current_output;
}
void ClientJson::send(td::Slice request) {
auto r_request = to_request(request);
if (r_request.is_error()) {
LOG(ERROR) << "Failed to parse " << tag("request", td::format::escaped(request)) << " " << r_request.error();
return;
}
std::uint64_t extra_id = extra_id_.fetch_add(1, std::memory_order_relaxed);
if (!r_request.ok_ref().second.empty()) {
std::lock_guard<std::mutex> guard(mutex_);
extra_[extra_id] = std::move(r_request.ok_ref().second);
}
client_.send(Client::Request{extra_id, std::move(r_request.ok_ref().first)});
}
td::CSlice ClientJson::receive(double timeout) {
auto response = client_.receive(timeout);
if (!response.object) {
return {};
}
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);
}
}
return store_string(from_response(*response.object, extra));
}
td::CSlice ClientJson::execute(td::Slice request) {
auto r_request = to_request(request);
if (r_request.is_error()) {
LOG(ERROR) << "Failed to parse " << tag("request", td::format::escaped(request)) << " " << r_request.error();
return {};
}
return store_string(from_response(*Client::execute(Client::Request{0, std::move(r_request.ok_ref().first)}).object,
r_request.ok().second));
}
} // namespace tonlib