20 lines
592 B
Go
20 lines
592 B
Go
// Package constants define constant variable
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package constants
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// Assuming the B3 specification
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const (
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HeaderTraceID = "X-B3-TraceId"
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HeaderSpanID = "X-B3-SpanId"
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HeaderParentSpanID = "X-B3-ParentSpanId"
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)
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// traceCtxKey is an unexported type for context keys to avoid collisions with other packages.
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type traceCtxKey string
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// Typed context keys for trace values — use these with context.WithValue / ctx.Value.
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var (
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CtxKeyTraceID = traceCtxKey(HeaderTraceID)
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CtxKeySpanID = traceCtxKey(HeaderSpanID)
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CtxKeyParentSpanID = traceCtxKey(HeaderParentSpanID)
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)
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