traceapi "go.opentelemetry.io/otel/trace"

	"istio.io/istio/pkg/log"
)

// Inspired by https://github.com/moby/buildkit/blob/d9a6afdf089a7c4b97cac704a60ad70c21086f12/util/tracing/detect/otlp.go#L18
// Most OTLP aspects are configured by Environment variables, but the actual client we use needs to be explicitly defined.
// So we can parse the env vars ourselves and set up the correct client.

width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill="none" stroke="#000" d="M18.65,1.68 C18.41,1.45 18.109,1.33 17.81,1.33 C17.499,1.33 17.209,1.45 16.98,1.68 L8.92,9.76 L8,12.33 L10.55,11.41 L18.651,3.34 C19.12,2.87 19.12,2.15 18.65,1.68 L18.65,1.68 L18.65,1.68 Z"/><polyline fill="none" stroke="#000" points="16.5 8.482 16.5 18.5 3.5 18.5 3.5 1.5 14.211 1.5"/></svg>',"file-pdf":'<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><rect fill="none"...

	VLEG    $0, 0(R1), V16
	MOVD    $sincoss3<>+0(SB), R1
	FMOVD   0(R1), F7
	MOVD    $sincoss1<>+0(SB), R1
	FMOVD   0(R1), F3
	MOVD    $sincoss0<>+0(SB), R1
	FMOVD   0(R1), F2
	WFCHDBS V2, V5, V2
	BEQ     L18
	MOVD    $sincosrpi2<>+0(SB), R1
	FMOVD   0(R1), F3
	MOVD    $sincosxadd<>+0(SB), R1
	FMOVD   0(R1), F2
	WFMSDB  V0, V3, V2, V3
	FMOVD   0(R1), F6
	FADD    F3, F6
	MOVD    $sincosxpi2h<>+0(SB), R1

	FMOVD	0(R1), F7
	WFCHDBS	V4, V7, V3
	BEQ	L15
	WFADB	V7, V4, V3
	FSUB	F7, F3
	WFCEDBS	V4, V3, V3
	BEQ	L15
	LTDBR	F0, F0
	FMOVD	8(R9), F4
	BNE	L16
L13:
	LTDBR	F2, F2
	BLT	L18
L40:
	FMOVD	$0, F0
	WFMDB	V4, V0, V1
	BR	L1
L49:
	WFMDB	V0, V4, V1
	BR	L1
L29:
	FMOVD	8(R9), F4
	BR	L13
L15:
	MOVD	$·pow_x434<>+0(SB), R1
	FMOVD	0(R1), F7
	WFCHDBS	V4, V7, V3

	goto L3
	goto L4
	goto L5
	goto L6
	goto L7
	goto L8
	goto L9
	goto L10
	goto L11
	goto L12
	goto L13
	goto L14
	goto L15
	goto L16
	goto L17
	goto L18
	goto L19
	goto L20
	goto L21
	goto L22
	goto L23
	goto L24
	goto L25
	goto L26
	goto L27
	goto L28
	goto L29
	goto L30
	goto L31
	goto L32
	goto L33

	goto L3
	goto L4
	goto L5
	goto L6
	goto L7
	goto L8
	goto L9
	goto L10
	goto L11
	goto L12
	goto L13
	goto L14
	goto L15
	goto L16
	goto L17
	goto L18
	goto L19
	goto L20
	goto L21
	goto L22
	goto L23
	goto L24
	goto L25
	goto L26
	goto L27
	goto L28
	goto L29
	goto L30
	goto L31
	goto L32
	goto L33

		return fmt.Errorf(`invalid header %q: header cannot have ":" prefix`, name)
	}
	return nil
}

// Copy from https://github.com/bufbuild/protoc-gen-validate/blob/a65858624dd654f2fb306d6af60f737132986f44/module/checker.go#L18
var httpHeaderValueRegexp = regexp.MustCompile("^[^\u0000-\u0008\u000A-\u001F\u007F]*$")

// ValidateHTTPHeaderValue validates a header value for Envoy
// Valid: "foo", "%HOSTNAME%", "100%%", "prefix %HOSTNAME% suffix"