/* Sample value remapping for path source muxing. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include #include #include #include #define RE_MAPPING_INDEX "[a-zA-Z0-9_]+" #define RE_MAPPING_RANGE "(" RE_MAPPING_INDEX ")(?:-(" RE_MAPPING_INDEX "))?" #define RE_MAPPING_STATS "stats\\.([a-z]+)\\.([a-z]+)" #define RE_MAPPING_HDR "hdr\\.(sequence|length)" #define RE_MAPPING_TS "ts\\.(origin|received)" #define RE_MAPPING_DATA1 "data\\[" RE_MAPPING_RANGE "\\]" #define RE_MAPPING_DATA2 "(?:data\\.)?(" RE_MAPPING_INDEX ")" #define RE_MAPPING \ "(?:(" RE_NODE_NAME ")\\.(?:" RE_MAPPING_STATS "|" RE_MAPPING_HDR \ "|" RE_MAPPING_TS "|" RE_MAPPING_DATA1 "|" RE_MAPPING_DATA2 \ ")|(" RE_NODE_NAME ")(?:\\[" RE_MAPPING_RANGE "\\])?)" namespace villas { namespace node { // Forward declarations class Node; struct Sample; class Signal; class MappingEntry { public: using Ptr = std::shared_ptr; enum class Type { UNKNOWN, DATA, STATS, HEADER, TIMESTAMP }; enum class HeaderType { LENGTH, SEQUENCE }; enum class TimestampType { ORIGIN, RECEIVED }; Node *node; // The node to which this mapping refers. enum Type type; // The mapping type. Selects one of the union fields below. /* The number of values which is covered by this mapping entry. * * A value of 0 indicates that all remaining values starting from the offset of a sample should be mapped. */ int length; unsigned offset; // Offset of this mapping entry within sample::data union { struct { int offset; Signal *signal; char *first; char *last; } data; struct { enum Stats::Metric metric; enum Stats::Type type; } stats; struct { enum HeaderType type; } header; struct { enum TimestampType type; } timestamp; }; std::string nodeName; // Used for between parse and prepare only. MappingEntry(); int prepare(NodeList &nodes); int update(struct Sample *remapped, const struct Sample *original) const; int parse(json_t *json); int parseString(const std::string &str); std::string toString(unsigned index) const; Signal::Ptr toSignal(unsigned index) const; }; } // namespace node } // namespace villas