Struct TraceId 

pub struct TraceId(/* private fields */);

128-bit unique trace identifier.

Uses UUIDv7-style layout for time-ordered generation: the high 48 bits encode a millisecond Unix timestamp, the remaining 80 bits are random.

use franken_kernel::TraceId;

let id = TraceId::from_parts(1_700_000_000_000, 0xABCD_EF01_2345_6789_AB);
let hex = id.to_string();
let parsed: TraceId = hex.parse().unwrap();
assert_eq!(id, parsed);

Implementations

impl TraceId

pub const fn from_raw(raw: u128) -> Self

Create a TraceId from raw 128-bit value.

pub const fn from_parts(ts_ms: u64, random: u128) -> Self

Create a TraceId from a millisecond timestamp and random bits.

The high 48 bits store ts_ms, the low 80 bits store random. The random value is truncated to 80 bits.

br-asupersync-97gwup: ts_ms is saturated to the 48-bit representable range (2^48 - 1, ≈ year 10889) before being shifted into the high bits. Pre-fix the function did (ts_ms as u128) << 80 which silently dropped the high bits of any ts_ms >= 2^48 — corrupting the trace-id wire layout (the truncated bits would land in random’s space, producing IDs that no longer satisfy the documented “high 48 = ts_ms, low 80 = random” invariant). Saturation keeps the const-fn signature and never silently corrupts the layout. Callers that want a strict, no-saturation surface can use Self::try_from_parts which returns Err on truncation.

pub const fn try_from_parts(ts_ms: u64, random: u128) -> Result<Self, u64>

Strict variant of Self::from_parts (br-asupersync-97gwup).

Returns Err(ts_ms) when the millisecond timestamp does not fit in the 48-bit field. Use this in places where silently saturating to year-10889 would mask a unit-error bug (e.g., passing microseconds or nanoseconds by mistake).

Errors

Returns Err(ts_ms) if ts_ms >= 2^48.

pub const fn timestamp_ms(self) -> u64

Extract the millisecond timestamp from the high 48 bits.

pub const fn as_u128(self) -> u128

Return the raw 128-bit value.

pub const fn to_bytes(self) -> [u8; 16]

Return the bytes in big-endian order.

pub const fn from_bytes(bytes: [u8; 16]) -> Self

Construct from big-endian bytes.

Trait Implementations

impl Clone for TraceId

fn clone(&self) -> TraceId

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TraceId

impl Debug for TraceId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TraceId

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TraceId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for TraceId

impl FromStr for TraceId

type Err = ParseIdError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for TraceId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TraceId

fn cmp(&self, other: &TraceId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TraceId

fn eq(&self, other: &TraceId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TraceId

fn partial_cmp(&self, other: &TraceId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for TraceId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TraceId