VILLASnode/include/villas/path_source.hpp

/** Message source
 *
 * @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 <vector>
#include <memory>

#include <villas/mapping_list.hpp>
#include <villas/pool.hpp>

namespace villas {
namespace node {

/* Forward declarations */
struct Sample;
class Node;
class Path;

class PathSource {
	friend Path;

public:
	using Ptr = std::shared_ptr<PathSource>;

protected:
	Node *node;
	Path *path;

	bool masked;

	struct Pool pool;

	MappingList mappings;				/**< List of mappings (struct MappingEntry). */

public:
	PathSource(Path *p, Node *n);
	virtual ~PathSource();

	void check();

	int read(int i);

	virtual
	void writeToSecondaries(struct Sample *smps[], unsigned cnt)
	{ }

	Node * getNode() const
	{
		return node;
	}

	Path * getPath() const
	{
		return path;
	}
};

using PathSourceList = std::vector<PathSource::Ptr>;

class SecondaryPathSource : public PathSource {

protected:
	PathSource::Ptr master;

public:
	using Ptr = std::shared_ptr<SecondaryPathSource>;

	SecondaryPathSource(Path *p, Node *n, NodeList &nodes, PathSource::Ptr master);
};

using SecondaryPathSourceList = std::vector<SecondaryPathSource::Ptr>;

class MasterPathSource : public PathSource {

protected:
	SecondaryPathSourceList secondaries;	/**< List of secondary path sources (PathSource). */

public:
	MasterPathSource(Path *p, Node *n);

	void addSecondary(SecondaryPathSource::Ptr ps)
	{
		secondaries.push_back(ps);
	}

	SecondaryPathSourceList getSecondaries()
	{
		return secondaries;
	}

	virtual
	void writeToSecondaries(struct Sample *smps[], unsigned cnt);
};



} /* namespace node */
} /* namespace villas */