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https://git.rwth-aachen.de/acs/public/villas/node/
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83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
/* LWS-releated functions.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <atomic>
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#include <thread>
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#include <jansson.h>
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#include <libwebsockets.h>
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#include <villas/common.hpp>
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#include <villas/log.hpp>
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#include <villas/queue.hpp>
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namespace villas {
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namespace node {
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// Forward declarations
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class Api;
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class Web final {
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private:
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enum State state;
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Logger logger;
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lws_context *context; // The libwebsockets server context.
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lws_vhost *vhost; // The libwebsockets vhost.
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Queue<lws *>
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writables; // Queue of WSIs for which we will call lws_callback_on_writable()
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int port; // Port of the build in HTTP / WebSocket server.
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std::string ssl_cert; // Path to the SSL certitifcate for HTTPS / WSS.
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std::string ssl_private_key; // Path to the SSL private key for HTTPS / WSS.
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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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Api *api;
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void worker();
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public:
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/* Initialize the web interface.
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*
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* The web interface is based on the libwebsockets library.
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*/
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Web(Api *a = nullptr);
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~Web();
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void start();
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void stop();
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static void lwsLogger(int level, const char *msg);
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static int lwsLogLevel(Log::Level lvl);
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// Parse HTTPd and WebSocket related options
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int parse(json_t *json);
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Api *getApi() { return api; }
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// for C-compatability
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lws_context *getContext() { return context; }
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lws_vhost *getVHost() { return vhost; }
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enum State getState() const { return state; }
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void callbackOnWritable(struct lws *wsi);
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bool isEnabled() { return port != CONTEXT_PORT_NO_LISTEN; }
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};
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} // namespace node
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} // namespace villas
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