/** API Request. * * @file * @author Steffen Vogel * @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC * @license GNU General Public License (version 3) * * VILLASnode * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . *********************************************************************************/ #pragma once #include #include #include #include #include #include #include #include #define RE_UUID "[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}" namespace villas { namespace node { namespace api { /* Forward declarations */ class Session; class Response; class RequestFactory; class Request { friend Session; friend RequestFactory; friend Response; protected: Session *session; Logger logger; Buffer buffer; public: std::vector matches; Session::Method method; unsigned long contentLength; json_t *body; RequestFactory *factory; Request(Session *s) : session(s), logger(logging.get("api:request")), method(Session::Method::UNKNOWN), contentLength(0), body(nullptr), factory(nullptr) { } virtual ~Request() { if (body) json_decref(body); } virtual Response * execute() = 0; virtual void decode(); const std::string & getMatch(int idx) const { return matches[idx]; } std::string getQueryArg(const std::string &arg) { char buf[1024]; const char *val; val = lws_get_urlarg_by_name(session->wsi, (arg + "=").c_str(), buf, sizeof(buf)); return val ? std::string(val) : std::string(); } std::string getHeader(enum lws_token_indexes hdr) { char buf[1024]; lws_hdr_copy(session->wsi, buf, sizeof(buf), hdr); return std::string(buf); } virtual std::string toString(); }; class RequestFactory : public plugin::Plugin { public: using plugin::Plugin::Plugin; virtual bool match(const std::string &uri, std::smatch &m) const = 0; virtual Request * make(Session *s) = 0; static Request * create(Session *s, const std::string &uri, Session::Method meth, unsigned long ct); }; template class RequestPlugin : public RequestFactory { protected: std::regex regex; public: RequestPlugin() : RequestFactory(), regex(re) { } virtual Request * make(Session *s) { return new T(s); } // Get plugin name virtual std::string getName() const { return name; } // Get plugin description virtual std::string getDescription() const { return desc; } virtual bool match(const std::string &uri, std::smatch &match) const { return std::regex_match(uri, match, regex); } }; } /* namespace api */ } /* namespace node */ } /* namespace villas */