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