2 * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * SPDX-License-Identifier: GPL-2.0-only
8 #ifndef LTTNG_CTF2_TRACE_CLASS_VISITOR_H
9 #define LTTNG_CTF2_TRACE_CLASS_VISITOR_H
11 #include "trace-class.hpp"
12 #include "stream-class.hpp"
13 #include "event-class.hpp"
15 #include <vendor/optional.hpp>
16 #include <vendor/nlohmann/json.hpp>
24 using append_metadata_fragment_function = std::function<void(const std::string& fragment)>;
26 class trace_class_visitor : public lttng::sessiond::trace::trace_class_visitor {
28 trace_class_visitor(const lttng::sessiond::trace::abi& trace_abi,
29 append_metadata_fragment_function append_metadata);
31 virtual void visit(const lttng::sessiond::trace::trace_class& trace_class) override final;
32 virtual void visit(const lttng::sessiond::trace::clock_class& clock_class) override final;
33 virtual void visit(const lttng::sessiond::trace::stream_class& stream_class) override final;
34 virtual void visit(const lttng::sessiond::trace::event_class& event_class) override final;
37 void append_metadata_fragment(const nlohmann::json& fragment) const;
39 const lttng::sessiond::trace::abi& _trace_abi;
40 const append_metadata_fragment_function _append_metadata_fragment;
43 } /* namespace ctf2 */
44 } /* namespace sessiond */
45 } /* namespace lttng */
47 #endif /* LTTNG_CTF2_TRACE_CLASS_VISITOR_H */