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Implement JSON API generation for async API calls

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Move JSON helpers to util/rsjson.* for better usability
Implement JSON ostream manipulator to print compact and pretty JSON
Use lambdas for API wrappers, integrate better and avoid namespace
  pollution
Removed experimental JSON API for notify client wrapper, notifications
  can be implemented automatically with moderns async API calls
Implement and automatically expose to JSON API
  RsGxsChannels::turtleSearchRequest(
        const std::string& matchString,
        const std::function<void (const RsGxsGroupSummary&)>& multiCallback,
        std::time_t maxWait )
This commit is contained in:
Gioacchino Mazzurco 2018-08-16 23:34:29 +02:00
parent b7f5d4286f
commit 4b6f751b09
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GPG key ID: A1FBCA3872E87051
15 changed files with 444 additions and 177 deletions
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73
jsonapi-generator/src/async-method-wrapper-template.cpp.tmpl Normal file
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/*
* RetroShare JSON API
* Copyright (C) 2018 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 <http://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 )
{
RsGenericSerializer::SerializeContext cReq(
nullptr, 0,
RsGenericSerializer::SERIALIZATION_FLAG_YIELDING );
RsJson& jReq(cReq.mJson);
jReq.Parse(reinterpret_cast<const char*>(body.data()), body.size());
RsGenericSerializer::SerializeContext cAns;
RsJson& jAns(cAns.mJson);
// if caller specified caller_data put it back in the answhere
const char kcd[] = "caller_data";
if(jReq.HasMember(kcd))
jAns.AddMember(kcd, jReq[kcd], jAns.GetAllocator());
$%paramsDeclaration%$
$%inputParamsDeserialization%$
$%callbackName%$ = [session]($%callbackParams%$)
{
$%callbackParamsSerialization%$
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());
$%sessionDelayedClose%$
} );
});