Struct Timestamp 

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

Wall-clock timestamp with monotonic guarantee within the system.

Compliance requires real-world time for audit trails; monotonicity prevents ordering issues when system clocks are adjusted.

Stored as nanoseconds since Unix epoch (1970-01-01 00:00:00 UTC). This gives us ~584 years of range, well beyond any practical use.

Implementations

impl Timestamp

pub const EPOCH: Timestamp

The Unix epoch (1970-01-01 00:00:00 UTC).

pub fn from_nanos(nanos: u64) -> Self

Creates a timestamp from nanoseconds since Unix epoch.

pub fn as_nanos(&self) -> u64

Returns the timestamp as nanoseconds since Unix epoch.

pub fn as_secs(&self) -> u64

Returns the timestamp as seconds since Unix epoch (truncates nanoseconds).

pub fn now() -> Self

Creates a timestamp for the current time.

Panics

Panics if the system clock is before Unix epoch (should never happen).

pub fn now_monotonic(last: Option<Timestamp>) -> Self

Creates a timestamp ensuring monotonicity: max(now, last + 1ns).

This guarantees that each timestamp is strictly greater than the previous, even if the system clock moves backwards or two events occur in the same nanosecond.

Arguments

• last - The previous timestamp, if any. Pass None for the first timestamp.

Trait Implementations

impl Clone for Timestamp

fn clone(&self) -> Timestamp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Timestamp

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

Formats the value using the given formatter.

impl Default for Timestamp

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Timestamp

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Timestamp

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

Formats the value using the given formatter.

impl From<Timestamp> for u64

fn from(ts: Timestamp) -> Self

Converts to this type from the input type.

impl From<u64> for Timestamp

fn from(nanos: u64) -> Self

Converts to this type from the input type.

impl Hash for Timestamp

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 Timestamp

fn cmp(&self, other: &Timestamp) -> 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 Timestamp

fn eq(&self, other: &Timestamp) -> 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 Timestamp

fn partial_cmp(&self, other: &Timestamp) -> 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 Timestamp

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Timestamp

impl Eq for Timestamp

impl StructuralPartialEq for Timestamp