utils

func (TraceID) HexString ¶ added in v0.83.0

func (t TraceID) HexString() string

HexString returns the trace ID as lowercase hex.

When Hi == 0 (the high half was not collected, e.g. dd-trace-go pprof labels expose only the lower 64 bits), Lo is emitted unpadded so the result is byte-exact for backend pattern searches against the uint64 lower half.

When Hi != 0 the full 128-bit ID was collected and the result must match the canonical 16-byte form (e.g. APM's 32-char display): Hi is emitted unpadded but Lo is zero-padded to 16 hex chars so leading zeros in Lo — which are part of the real 128-bit ID — are preserved.

func (TraceID) String ¶

func (t TraceID) String() string