mirror of
https://github.com/go-gitea/gitea.git
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97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
// Copyright 2025 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package gtprof
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import (
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"context"
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"fmt"
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"strings"
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"sync/atomic"
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"time"
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"code.gitea.io/gitea/modules/tailmsg"
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)
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type traceBuiltinStarter struct{}
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type traceBuiltinSpan struct {
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ts *TraceSpan
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internalSpanIdx int
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}
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func (t *traceBuiltinSpan) addEvent(name string, cfg *EventConfig) {
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// No-op because builtin tracer doesn't need it.
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// In the future we might use it to mark the time point between backend logic and network response.
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}
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func (t *traceBuiltinSpan) recordError(err error, cfg *EventConfig) {
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// No-op because builtin tracer doesn't need it.
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// Actually Gitea doesn't handle err this way in most cases
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}
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func (t *traceBuiltinSpan) toString(out *strings.Builder, indent int) {
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t.ts.mu.RLock()
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defer t.ts.mu.RUnlock()
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out.WriteString(strings.Repeat(" ", indent))
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out.WriteString(t.ts.name)
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if t.ts.endTime.IsZero() {
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out.WriteString(" duration: (not ended)")
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} else {
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fmt.Fprintf(out, " duration=%.4fs", t.ts.endTime.Sub(t.ts.startTime).Seconds())
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}
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for _, a := range t.ts.attributes {
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out.WriteString(" ")
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out.WriteString(a.Key)
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out.WriteString("=")
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value := a.Value.AsString()
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if strings.ContainsAny(value, " \t\r\n") {
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quoted := false
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for _, c := range "\"'`" {
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if quoted = !strings.Contains(value, string(c)); quoted {
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value = string(c) + value + string(c)
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break
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}
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}
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if !quoted {
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value = fmt.Sprintf("%q", value)
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}
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}
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out.WriteString(value)
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}
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out.WriteString("\n")
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for _, c := range t.ts.children {
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span := c.internalSpans[t.internalSpanIdx].(*traceBuiltinSpan)
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span.toString(out, indent+2)
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}
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}
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func (t *traceBuiltinSpan) end() {
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if t.ts.parent == nil {
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// TODO: debug purpose only
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// TODO: it should distinguish between http response network lag and actual processing time
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threshold := time.Duration(traceBuiltinThreshold.Load())
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if threshold != 0 && t.ts.endTime.Sub(t.ts.startTime) > threshold {
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sb := &strings.Builder{}
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t.toString(sb, 0)
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tailmsg.GetManager().GetTraceRecorder().Record(sb.String())
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}
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}
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}
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func (t *traceBuiltinStarter) start(ctx context.Context, traceSpan *TraceSpan, internalSpanIdx int) (context.Context, traceSpanInternal) {
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return ctx, &traceBuiltinSpan{ts: traceSpan, internalSpanIdx: internalSpanIdx}
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}
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func init() {
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globalTraceStarters = append(globalTraceStarters, &traceBuiltinStarter{})
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}
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var traceBuiltinThreshold atomic.Int64
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func EnableBuiltinTracer(threshold time.Duration) {
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traceBuiltinThreshold.Store(int64(threshold))
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}
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