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traces_profiler.go
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traces_profiler.go
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package sentry
// Checks whether the transaction should be profiled (according to ProfilesSampleRate)
// and starts a profiler if so.
func (span *Span) sampleTransactionProfile() {
var sampleRate = span.clientOptions().ProfilesSampleRate
switch {
case sampleRate < 0.0 || sampleRate > 1.0:
Logger.Printf("Skipping transaction profiling: ProfilesSampleRate out of range [0.0, 1.0]: %f", sampleRate)
case sampleRate == 0.0 || rng.Float64() >= sampleRate:
Logger.Printf("Skipping transaction profiling: ProfilesSampleRate is: %f", sampleRate)
default:
span.profiler = &_transactionProfiler{
stopFunc: startProfiling(span.StartTime),
}
}
}
type transactionProfiler interface {
Finish(span *Span) *profileInfo
}
type _transactionProfiler struct {
stopFunc func() *profilerResult
}
func (tp *_transactionProfiler) Finish(span *Span) *profileInfo {
result := tp.stopFunc()
if result == nil || result.trace == nil {
return nil
}
info := &profileInfo{
Version: "1",
EventID: uuid(),
// See https://github.com/getsentry/sentry-go/pull/626#discussion_r1204870340 for explanation why we use the Transaction time.
Timestamp: span.StartTime,
Trace: result.trace,
Transaction: profileTransaction{
DurationNS: uint64(span.EndTime.Sub(span.StartTime).Nanoseconds()),
Name: span.Name,
TraceID: span.TraceID.String(),
},
}
if len(info.Transaction.Name) == 0 {
// Name is required by Relay so use the operation name if the span name is empty.
info.Transaction.Name = span.Op
}
if result.callerGoID > 0 {
info.Transaction.ActiveThreadID = result.callerGoID
}
return info
}
func (info *profileInfo) UpdateFromEvent(event *Event) {
info.Environment = event.Environment
info.Platform = event.Platform
info.Release = event.Release
info.Dist = event.Dist
info.Transaction.ID = event.EventID
if runtimeContext, ok := event.Contexts["runtime"]; ok {
if value, ok := runtimeContext["name"]; !ok {
info.Runtime.Name = value.(string)
}
if value, ok := runtimeContext["version"]; !ok {
info.Runtime.Version = value.(string)
}
}
if osContext, ok := event.Contexts["os"]; ok {
if value, ok := osContext["name"]; !ok {
info.OS.Name = value.(string)
}
}
if deviceContext, ok := event.Contexts["device"]; ok {
if value, ok := deviceContext["arch"]; !ok {
info.Device.Architecture = value.(string)
}
}
}