mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
205 lines
3.6 KiB
C++
205 lines
3.6 KiB
C++
/* Node compatability layer for C++.
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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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/*
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* @addtogroup node Node
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* @{
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*/
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#pragma once
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#include <jansson.h>
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#include <villas/sample.hpp>
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#include <villas/node.hpp>
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#include <villas/node_compat_type.hpp>
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namespace villas {
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namespace node {
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// Forward declarations
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class NodeCompatFactory;
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class NodeCompat : public Node {
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protected:
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struct NodeCompatType *_vt; // Virtual functions (C++ OOP style)
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void *_vd; // Virtual data (used by struct vnode::_vt functions)
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std::string _details;
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virtual
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int _read(struct Sample *smps[], unsigned cnt);
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virtual
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int _write(struct Sample *smps[], unsigned cnt);
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public:
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NodeCompat *node;
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json_t *cfg;
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NodeCompat(struct NodeCompatType *vt, const uuid_t &id, const std::string &name);
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NodeCompat(const NodeCompat& n);
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NodeCompat& operator=(const NodeCompat& other);
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virtual
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~NodeCompat();
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template<typename T>
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T * getData()
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{
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return static_cast<T *>(_vd);
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}
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virtual
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NodeCompatType * getType() const
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{
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return _vt;
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}
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/* Parse node connection details.
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*
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* @param json A JSON object containing the configuration of the node.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int parse(json_t *json);
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// Returns a string with a textual represenation of this node.
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virtual
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const std::string & getDetails();
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/* Check the current node configuration for plausability and errors.
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*
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* @retval 0 Success. Node configuration is good.
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* @retval <0 Error. The node configuration is bogus.
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*/
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virtual
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int check();
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virtual
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int prepare();
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/* Start this node.
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*
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int start();
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/* Stop this node.
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*
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int stop();
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/* Restart this node.
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*
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* @param n A pointer to the node object.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int restart();
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/* Pause this node.
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*
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* @param n A pointer to the node object.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int pause();
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/* Resume this node.
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*
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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virtual
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int resume();
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/* Reverse source and destination of a node.
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*/
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virtual
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int reverse();
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virtual
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std::vector<int> getPollFDs();
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/* Get list of socket file descriptors for configuring network emulation.
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*
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* @return The number of file descriptors which have been put into \p sds.
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*/
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virtual
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std::vector<int> getNetemFDs();
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// Return a memory allocator which should be used for sample pools passed to this node.
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virtual
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struct memory::Type * getMemoryType();
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};
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class NodeCompatFactory : public NodeFactory {
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protected:
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struct NodeCompatType *_vt;
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public:
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NodeCompatFactory(struct NodeCompatType *vt) :
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NodeFactory(),
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_vt(vt)
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{ }
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virtual
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Node * make(const uuid_t &id = {}, const std::string &name = "");
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/// Get plugin name
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virtual
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std::string getName() const
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{
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return _vt->name;
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}
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/// Get plugin description
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virtual
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std::string getDescription() const
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{
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return _vt->description;
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}
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virtual
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int getFlags() const;
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virtual
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int getVectorize() const
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{
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return _vt->vectorize;
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}
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virtual
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int start(SuperNode *sn);
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virtual
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int stop();
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};
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} // namespace node
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} // namespace villas
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