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a8c9d1206a
This is a thin wrapper over the `seastar::file` class which adds CQL trace messages before and after I/O operations.
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
/*
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* Copyright (C) 2019 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <seastar/core/file.hh>
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#include "tracing/trace_state.hh"
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namespace tracing {
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// Creates a wrapper over `f` that writes CQL trace messages using `trace_state`
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// before and after each operation performed on `f` that returns a future
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// (all operations except `dup` and `list_directory`).
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// To identify messages for this particular file, `trace_prefix` is prepended to every such message.
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// Note: calling dup() on the wrapper returns a handle to the underlying file.
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seastar::file make_traced_file(seastar::file f, trace_state_ptr trace_state, seastar::sstring trace_prefix);
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} // namespace tracing
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