Struct Timestamp

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

Strictly monotonic timestamp since SystemTime::UNIX_EPOCH in microseconds.

The purpose of this timestamp is to unique per “user”, not globally, it achieves this by: 1. Override the last byte with a random clock_id, reducing the probability of two matching timestamps across multiple machines/threads. 2. Guarantee that the remaining 3 bytes are ever increasing (strictly monotonic) within the same thread regardless of the wall clock value

This timestamp is also serialized as BE bytes to remain sortable. If a utf-8 encoding is necessary, it is encoded as base32::Alphabet::Crockford to act as a sortable Id.

U64 (through pubky) of microseconds is valid for the next ~600 thousand years! i64 (in mainline) of microseconds is valid for the next ~300 thousand years!

Implementations

impl Timestamp

pub fn now() -> Timestamp

Generate a Timestamp from the DEFAULT_FACTORY.

pub fn parse_http_date(date: &str) -> Result<Timestamp, Error>

pub fn to_bytes(&self) -> [u8; 8]

Return big endian bytes representation of this timestamp.

pub fn as_u64(&self) -> u64

Return the internal u64 representation of this Timestamp.

pub fn format_http_date(&self) -> String

Trait Implementations

impl Add<u64> for Timestamp

type Output = Timestamp

The resulting type after applying the + operator.

fn add(self, rhs: u64) -> <Timestamp as Add<u64>>::Output

Performs the + operation.

impl Add for Timestamp

type Output = Timestamp

The resulting type after applying the + operator.

fn add(self, rhs: Timestamp) -> <Timestamp as Add>::Output

Performs the + operation.

impl AddAssign<u64> for Timestamp

fn add_assign(&mut self, other: u64)

Performs the += operation.

impl AddAssign for Timestamp

fn add_assign(&mut self, other: Timestamp)

Performs the += operation.

impl Clone for Timestamp

fn clone(&self) -> Timestamp

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Default for Timestamp

fn default() -> Timestamp

Returns the “default value” for a type.

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

fn deserialize<D>( deserializer: D, ) -> Result<Timestamp, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Timestamp

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

Formats the value using the given formatter.

impl From<&Timestamp> for Timestamp

fn from(timestamp: &Timestamp) -> Timestamp

Converts to this type from the input type.

impl From<[u8; 8]> for Timestamp

fn from(bytes: [u8; 8]) -> Timestamp

Converts to this type from the input type.

impl From<HttpDate> for Timestamp

fn from(value: HttpDate) -> Timestamp

Converts to this type from the input type.

impl From<SystemTime> for Timestamp

fn from(system_time: SystemTime) -> Timestamp

Converts to this type from the input type.

impl From<u64> for Timestamp

fn from(inner: u64) -> Timestamp

Converts to this type from the input type.

impl Hash for Timestamp

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

where __H: Hasher,

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 as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Sub<u64> for Timestamp

type Output = Timestamp

The resulting type after applying the - operator.

fn sub(self, rhs: u64) -> <Timestamp as Sub<u64>>::Output

Performs the - operation.

impl Sub for Timestamp

type Output = Timestamp

The resulting type after applying the - operator.

fn sub(self, rhs: Timestamp) -> <Timestamp as Sub>::Output

Performs the - operation.

impl SubAssign<u64> for Timestamp

fn sub_assign(&mut self, other: u64)

Performs the -= operation.

impl SubAssign for Timestamp

fn sub_assign(&mut self, other: Timestamp)

Performs the -= operation.

impl TryFrom<&[u8]> for Timestamp

type Error = TryFromSliceError

The type returned in the event of a conversion error.

fn try_from( bytes: &[u8], ) -> Result<Timestamp, <Timestamp as TryFrom<&[u8]>>::Error>

Performs the conversion.

impl TryFrom<String> for Timestamp

type Error = InvalidEncoding

The type returned in the event of a conversion error.

fn try_from( value: String, ) -> Result<Timestamp, <Timestamp as TryFrom<String>>::Error>

Performs the conversion.

impl Copy for Timestamp

impl Eq for Timestamp

impl StructuralPartialEq for Timestamp