Function SpanIDToUint64

pkg/util/traceid.go:107–114

SpanIDToUint64 converts a span ID into an uint64 representation. This is useful when using a span ID as key in a map. If the ID is longer than 8 bytes, the bytes at larger positions are discarded. The function does not make any guarantees about the endianess or ordering of converted IDs. Note: span

(id []byte)

// Note: span IDs are not always unique within a trace (e.g. zipkin traces) SpanIDAndKindToToken could be more
// appropriate in some cases.
func SpanIDToUint64(id []byte) uint64 {
	if len(id) < 8 {
		var idArray [8]byte
		copy(idArray[:], id)
		return *(*uint64)(unsafe.Pointer(&idArray[0]))
	}
	return *(*uint64)(unsafe.Pointer(&id[0]))
}

// EqualHexStringTraceIDs compares two trace ID strings and compares the
// resulting bytes after padding.  Returns true unless there is a reason not