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Code Issues Releases Activity

Use a constant padding for 64-bit B3 trace IDs (#701)

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This commit is contained in:
Anthony Mirabella
2020-05-06 11:09:41 -04:00
committed by GitHub
parent 2df5f81356
commit a547cc3bfe
1 changed files with 2 additions and 1 deletions
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3
api/trace/b3_propagator.go
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@ -29,6 +29,7 @@ const (
B3SpanIDHeader = "X-B3-SpanId" B3SpanIDHeader = "X-B3-SpanId"
B3SampledHeader = "X-B3-Sampled" B3SampledHeader = "X-B3-Sampled"
B3ParentSpanIDHeader = "X-B3-ParentSpanId" B3ParentSpanIDHeader = "X-B3-ParentSpanId"
b3TraceIDPadding = "0000000000000000"
) )
// B3 propagator serializes SpanContext to/from B3 Headers. // B3 propagator serializes SpanContext to/from B3 Headers.
@ -89,7 +90,7 @@ func (b3 B3) Extract(ctx context.Context, supplier propagation.HTTPSupplier) con
func fixB3TID(in string) string { func fixB3TID(in string) string {
if len(in) == 16 { if len(in) == 16 {
in = strings.Repeat("0", 16) + in in = b3TraceIDPadding + in
} }
return in return in
} }