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spanEvent.go
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spanEvent.go
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package trace
import (
"time"
"go.opentelemetry.io/otel/trace"
)
type SpanEvent interface {
IsRecording() bool
Flush()
Error(err error)
Tags(tags ...KeyValue)
Vars(v interface{})
}
var (
_ SpanEvent = &SeverityEvent{}
_ SpanEvent = NopEvent(0)
)
var (
nopEventInstance = NopEvent(0)
)
type NopEvent int
// IsRecording implements SpanEvent
func (NopEvent) IsRecording() bool {
return false
}
// Flush implements SpanEvent
func (NopEvent) Flush() {
// do nothing
}
// Error implements SpanEvent
func (NopEvent) Error(err error) {
// do nothing
}
// Tags implements SpanEvent
func (NopEvent) Tags(tags ...KeyValue) {
// do nothing
}
// Vars implements SpanEvent
func (NopEvent) Vars(v interface{}) {
// do nothing
}
type SeverityEvent struct {
span trace.Span
timestamp time.Time
severity Severity
message string
flushed bool
tags []KeyValue
err error
}
// IsRecording implements SpanEvent
func (s *SeverityEvent) IsRecording() bool {
return !s.flushed
}
// Flush implements SpanEvent
func (s *SeverityEvent) Flush() {
if !s.flushed {
s.flushed = true
s.tags = append(s.tags,
__ATTR_EVENT_MESSAGE.String(s.message),
__ATTR_EVENT_SEVERITY.String(s.severity.Name()),
)
if s.err != nil {
err := s.err
s.span.RecordError(err, trace.WithAttributes(
s.tags...,
), trace.WithTimestamp(s.timestamp))
} else {
s.span.AddEvent(string(__ATTR_EVENT), trace.WithAttributes(
s.tags...,
), trace.WithTimestamp(s.timestamp))
}
}
}
// Error implements SpanEvent
func (s *SeverityEvent) Error(err error) {
if !s.flushed {
s.err = err
}
}
// Tags implements SpanEvent
func (s *SeverityEvent) Tags(tags ...KeyValue) {
if !s.flushed {
s.tags = append(s.tags, tags...)
}
}
// Vars implements SpanEvent
func (s *SeverityEvent) Vars(v interface{}) {
if !s.flushed {
tags := expandObject(string(__ATTR_VARS), v)
s.tags = append(s.tags, tags...)
}
}