RetroShare/jsonapi-generator/src/method-wrapper-template.cpp.tmpl

/*
 * 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/>.
 */

#include <sstream>
#include <memory>
#include <restbed>
#include "retroshare/$%headerFileName%$"

namespace rb = restbed;

void $%wrapperName%$(const std::shared_ptr<rb::Session> session)
{
	size_t reqSize = session->get_request()->get_header("Content-Length", 0);
	session->fetch( reqSize, [](
	                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());

$%paramsDeclaration%$

		// deserialize input parameters from JSON
$%inputParamsDeserialization%$

		// call retroshare C++ API
$%functionCall%$

		// serialize out parameters and return value to JSON
$%outputParamsSerialization%$

		// return them to the API caller
		std::stringstream ss;
		ss << jAns;
		std::string&& ans(ss.str());
		const std::multimap<std::string, std::string> headers
		{
			{ "Content-Type", "text/json" },
			{ "Content-Length", std::to_string(ans.length()) }
		};
		session->close(rb::OK, ans, headers);
	} );
}