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987dd994b6
Summary: Allocate and hook up a StructuredLogger at startup if the EdenConfig has the appropriate values set. Reviewed By: simpkins Differential Revision: D18071821 fbshipit-source-id: 3996b6644bbf0c16bb3b9950d57a79d4619a1656
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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*/
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#pragma once
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#include <unordered_map>
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#include "eden/fs/telemetry/LogEvent.h"
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#include "eden/fs/telemetry/SessionInfo.h"
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namespace facebook {
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namespace eden {
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class StructuredLogger {
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public:
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explicit StructuredLogger(bool enabled, SessionInfo sessionInfo);
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virtual ~StructuredLogger() = default;
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template <typename Event>
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void logEvent(const Event& event) {
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// Avoid a bunch of work if it's going to be thrown away by the
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// logDynamicEvent implementation.
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if (!enabled_) {
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return;
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}
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// constexpr to ensure that the type field on the Event struct is constexpr
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// too.
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constexpr const char* type = Event::type;
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// TODO: consider moving the event to another thread and populating the
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// default fields there to reduce latency at the call site.
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DynamicEvent de{populateDefaultFields(type)};
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event.populate(de);
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logDynamicEvent(std::move(de));
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}
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private:
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virtual void logDynamicEvent(DynamicEvent event) = 0;
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DynamicEvent populateDefaultFields(const char* type);
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bool enabled_;
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uint32_t sessionId_;
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SessionInfo sessionInfo_;
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};
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} // namespace eden
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} // namespace facebook
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