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https://git.rwth-aachen.de/acs/public/villas/node/
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65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/* Node direction.
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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 <jansson.h>
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#include <villas/common.hpp>
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#include <villas/hook_list.hpp>
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#include <villas/list.hpp>
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#include <villas/signal_list.hpp>
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namespace villas {
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namespace node {
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// Forward declarations
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class Node;
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class Path;
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class NodeDirection {
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friend Node;
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public:
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enum class Direction {
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IN, // VILLASnode is receiving/reading
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OUT // VILLASnode is sending/writing
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} direction;
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/* The path which uses this node as a source/destination.
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*
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* Usually every node should be used only by a single path as destination.
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* Otherwise samples from different paths would be interleaved.
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*/
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Path *path;
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Node *node;
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int enabled;
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int builtin; // This node should use built-in hooks by default.
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unsigned
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vectorize; // Number of messages to send / recv at once (scatter / gather)
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HookList hooks; // List of read / write hooks (struct hook).
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SignalList::Ptr signals; // Signal description.
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json_t *config; // A JSON object containing the configuration of the node.
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NodeDirection(enum NodeDirection::Direction dir, Node *n);
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int parse(json_t *json);
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void check();
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int prepare();
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int start();
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int stop();
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SignalList::Ptr getSignals(int after_hooks = true) const;
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unsigned getSignalsMaxCount() const;
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};
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} // namespace node
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} // namespace villas
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