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VILLASnode/include/villas/web.hpp
Steffen Vogel 7eec1bb753 update Steffens mail address
Signed-off-by: Steffen Vogel <post@steffenvogel.de>
2022-12-16 23:44:07 +01:00

97 lines
1.9 KiB
C++

/** LWS-releated functions.
*
* @file
* @author Steffen Vogel <post@steffenvogel.de>
* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
* @license Apache 2.0
*********************************************************************************/
#pragma once
#include <atomic>
#include <thread>
#include <libwebsockets.h>
#include <jansson.h>
#include <villas/log.hpp>
#include <villas/common.hpp>
#include <villas/queue.hpp>
namespace villas {
namespace node {
/* Forward declarations */
class Api;
class Web {
protected:
enum State state;
Logger logger;
lws_context *context; /**< The libwebsockets server context. */
lws_vhost *vhost; /**< The libwebsockets vhost. */
Queue<lws *> writables; /**< Queue of WSIs for which we will call lws_callback_on_writable() */
int port; /**< Port of the build in HTTP / WebSocket server. */
std::string ssl_cert; /**< Path to the SSL certitifcate for HTTPS / WSS. */
std::string ssl_private_key; /**< Path to the SSL private key for HTTPS / WSS. */
std::thread thread;
std::atomic<bool> running; /**< Atomic flag for signalizing thread termination. */
Api *api;
void worker();
public:
/** Initialize the web interface.
*
* The web interface is based on the libwebsockets library.
*/
Web(Api *a = nullptr);
void start();
void stop();
static void lwsLogger(int level, const char *msg);
static int lwsLogLevel(Log::Level lvl);
/** Parse HTTPd and WebSocket related options */
int parse(json_t *json);
Api * getApi()
{
return api;
}
/* for C-compatability */
lws_context * getContext()
{
return context;
}
lws_vhost * getVHost()
{
return vhost;
}
enum State getState() const
{
return state;
}
void callbackOnWritable(struct lws *wsi);
bool isEnabled()
{
return port != CONTEXT_PORT_NO_LISTEN;
}
};
} /* namespace node */
} /* namespace villas */