mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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117 lines
2.3 KiB
C++
117 lines
2.3 KiB
C++
/** REST-API-releated functions.
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*
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* @file
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* @author Steffen Vogel <post@steffenvogel.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache 2.0
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*********************************************************************************/
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#pragma once
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#include <jansson.h>
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#include <libwebsockets.h>
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#include <atomic>
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#include <thread>
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#include <list>
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#include <libwebsockets.h>
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#include <villas/log.hpp>
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#include <villas/common.hpp>
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#include <villas/queue_signalled.hpp>
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#include <villas/exceptions.hpp>
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namespace villas {
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namespace node {
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namespace api {
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const int version = 2;
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/* Forward declarations */
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class Session;
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class Response;
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class Request;
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class Error : public RuntimeError {
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public:
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template<typename... Args>
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Error(int c = HTTP_STATUS_INTERNAL_SERVER_ERROR, const std::string &msg = "Invalid API request", Args&&... args) :
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RuntimeError(msg, std::forward<Args>(args)...),
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code(c),
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json(nullptr)
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{ }
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template<typename... Args>
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Error(int c = HTTP_STATUS_INTERNAL_SERVER_ERROR, const std::string &msg = "Invalid API request", const char *fmt = nullptr, Args&&... args) :
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RuntimeError(msg),
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code(c),
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json(fmt
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? json_pack(fmt, std::forward<Args>(args)...)
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: nullptr
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)
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{ }
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int code;
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json_t *json;
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};
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class BadRequest : public Error {
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public:
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template<typename... Args>
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BadRequest(const std::string &msg = "Bad API request", Args&&... args) :
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Error(HTTP_STATUS_BAD_REQUEST, msg, std::forward<Args>(args)...)
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{ }
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};
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class InvalidMethod : public BadRequest {
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public:
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InvalidMethod(Request *req);
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};
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} /* namespace api */
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/* Forward declarations */
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class SuperNode;
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class Api {
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protected:
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Logger logger;
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enum State state;
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std::thread thread;
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std::atomic<bool> running; /**< Atomic flag for signalizing thread termination. */
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SuperNode *super_node;
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void run();
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void worker();
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public:
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/** Initialize the API.
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*
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* Save references to list of paths / nodes for command execution.
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*/
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Api(SuperNode *sn);
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~Api();
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void start();
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void stop();
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SuperNode * getSuperNode()
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{
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return super_node;
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}
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std::list<api::Session *> sessions; /**< List of currently active connections */
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villas::QueueSignalled<api::Session *> pending; /**< A queue of api_sessions which have pending requests. */
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};
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} /* namespace node */
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} /* namespace villas */
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