RetroShare/jsonapi-generator/src/async-method-wrapper-template.cpp.tmpl
Gioacchino Mazzurco f2aa2aa543
JSON API avoid capturing shared_ptr in lambda
use weak_ptr as capture shared_ptr could cause circular ref counting
2019-04-15 00:07:21 +02:00

72 lines
2.8 KiB
Cheetah

/*******************************************************************************
* RetroShare JSON API *
* *
* Copyright (C) 2018-2019 Gioacchino Mazzurco <gio@eigenlab.org> *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU Affero General Public License as *
* published by the Free Software Foundation, either version 3 of the *
* License, or (at your option) any later version. *
* *
* This program 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 Affero General Public License for more details. *
* *
* You should have received a copy of the GNU Affero General Public License *
* along with this program. If not, see <https://www.gnu.org/licenses/>. *
* *
*******************************************************************************/
registerHandler("$%apiPath%$",
[$%captureVars%$](const std::shared_ptr<rb::Session> session)
{
const std::multimap<std::string, std::string> headers
{
{ "Connection", "keep-alive" },
{ "Content-Type", "text/event-stream" }
};
session->yield(rb::OK, headers);
size_t reqSize = session->get_request()->get_header("Content-Length", 0);
session->fetch( reqSize, [$%captureVars%$](
const std::shared_ptr<rb::Session> session,
const rb::Bytes& body )
{
INITIALIZE_API_CALL_JSON_CONTEXT;
if( !checkRsServicePtrReady(
$%instanceName%$, "$%instanceName%$", cAns, session ) )
return;
$%paramsDeclaration%$
$%inputParamsDeserialization%$
const std::weak_ptr<rb::Session> weakSession(session);
$%callbackName%$ = [weakSession]($%callbackParams%$)
{
auto session = weakSession.lock();
if(!session || session->is_closed()) return;
$%callbackParamsSerialization%$
std::stringstream message;
message << "data: " << compactJSON << ctx.mJson << "\n\n";
session->yield(message.str());
$%sessionEarlyClose%$
};
$%functionCall%$
$%outputParamsSerialization%$
// return them to the API caller
std::stringstream message;
message << "data: " << compactJSON << cAns.mJson << "\n\n";
session->yield(message.str());
$%sessionDelayedClose%$
} );
}, $%requiresAuth%$);