95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/*
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* Tracing.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2020 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "flow/Tracing.h"
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#include <memory>
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namespace {
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struct NoopTracer : ITracer {
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TracerType type() const { return TracerType::DISABLED; }
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void trace(Span const& span) override {}
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};
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struct LogfileTracer : ITracer {
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TracerType type() const { return TracerType::LOG_FILE; }
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void trace(Span const& span) override {
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if (g_network->isSimulated()) {
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return;
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}
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TraceEvent te(SevInfo, "TracingSpan", span.context);
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te.detail("Location", span.location.name)
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.detail("Begin", format("%.6f", span.begin))
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.detail("End", format("%.6f", span.end));
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if (span.parents.size() == 1) {
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te.detail("Parent", *span.parents.begin());
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} else {
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for (auto parent : span.parents) {
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TraceEvent(SevInfo, "TracingSpanAddParent", span.context).detail("AddParent", parent);
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}
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}
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}
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};
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std::unique_ptr<ITracer> g_tracer = std::make_unique<NoopTracer>();
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} // namespace
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void openTracer(TracerType type) {
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if (g_tracer->type() == type) {
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return;
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}
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switch (type) {
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case TracerType::DISABLED:
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g_tracer = std::make_unique<NoopTracer>();
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break;
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case TracerType::LOG_FILE:
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g_tracer = std::make_unique<LogfileTracer>();
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break;
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case TracerType::END:
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ASSERT(false);
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break;
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}
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}
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ITracer::~ITracer() {}
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Span& Span::operator=(Span&& o) {
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if (begin > 0.0) {
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end = g_network->now();
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g_tracer->trace(*this);
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}
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arena = std::move(o.arena);
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context = o.context;
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begin = o.begin;
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end = o.end;
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location = o.location;
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parents = std::move(o.parents);
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return *this;
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}
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Span::~Span() {
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if (begin > 0.0) {
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end = g_network->now();
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g_tracer->trace(*this);
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}
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}
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