| 1 | /* |
| 2 | * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef LTTNG_CTF2_TRACE_CLASS_VISITOR_H |
| 9 | #define LTTNG_CTF2_TRACE_CLASS_VISITOR_H |
| 10 | |
| 11 | #include "event-class.hpp" |
| 12 | #include "stream-class.hpp" |
| 13 | #include "trace-class.hpp" |
| 14 | |
| 15 | #include <vendor/nlohmann/json.hpp> |
| 16 | #include <vendor/optional.hpp> |
| 17 | |
| 18 | #include <functional> |
| 19 | |
| 20 | namespace lttng { |
| 21 | namespace sessiond { |
| 22 | namespace ctf2 { |
| 23 | |
| 24 | using append_metadata_fragment_function = std::function<void(const std::string& fragment)>; |
| 25 | |
| 26 | class trace_class_visitor : public lttng::sessiond::trace::trace_class_visitor { |
| 27 | public: |
| 28 | explicit trace_class_visitor(append_metadata_fragment_function append_metadata); |
| 29 | |
| 30 | void visit(const lttng::sessiond::trace::trace_class& trace_class) final; |
| 31 | void visit(const lttng::sessiond::trace::clock_class& clock_class) final; |
| 32 | void visit(const lttng::sessiond::trace::stream_class& stream_class) final; |
| 33 | void visit(const lttng::sessiond::trace::event_class& event_class) final; |
| 34 | |
| 35 | private: |
| 36 | void append_metadata_fragment(const nlohmann::json& fragment) const; |
| 37 | |
| 38 | const append_metadata_fragment_function _append_metadata_fragment; |
| 39 | }; |
| 40 | |
| 41 | } /* namespace ctf2 */ |
| 42 | } /* namespace sessiond */ |
| 43 | } /* namespace lttng */ |
| 44 | |
| 45 | #endif /* LTTNG_CTF2_TRACE_CLASS_VISITOR_H */ |