Struct Uuid 

pub struct Uuid { /* private fields */ }

This class defines an immutable universally unique identifier (UUID). It represents a 128-bit value. More specifically, the random UUIDs generated by this class are variant 2 (Leach-Salz) version 4 UUIDs. This is the same type of UUID as the ones generated by java.util.UUID. The Display implementation prints using the base64 string encoding. Likewise, the from_string method expects a base64 string encoding.

Implementations

impl Uuid

pub const ZERO_UUID: Uuid

A UUID that represents a null or empty UUID. Will never be returned by random_uuid.

pub const ONE_UUID: Uuid

A reserved UUID. Will never be returned by random_uuid.

pub const METADATA_TOPIC_ID: Uuid = Self::ONE_UUID

A UUID for the metadata topic in KRaft mode. Will never be returned by random_uuid.

pub const fn new(most_sig_bits: u64, least_sig_bits: u64) -> Self

Constructs a 128-bit type 4 UUID where the first long represents the most significant 64 bits and the second long represents the least significant 64 bits.

Arguments

• most_sig_bits - the most significant 64 bits
• least_sig_bits - the least significant 64 bits

pub fn random_uuid() -> Self

Static factory to retrieve a type 4 (pseudo randomly generated) UUID.

This will not generate a UUID equal to ZERO_UUID, ONE_UUID, or one whose string representation contains a dash (“-”).

pub const fn most_significant_bits(&self) -> u64

Returns the most significant 64 bits of this UUID.

pub const fn least_significant_bits(&self) -> u64

Returns the least significant 64 bits of this UUID.

pub fn from_string(s: &str) -> Result<Self, Error>

Creates a UUID based on a base64 string encoding used in the to_string() method.

Arguments

• s - the base64 URL encoding, without padding

Errors

• Error::is_local_illegal_argument_error if s is not the base64 encoding of 16 bytes

Trait Implementations

impl Clone for Uuid

fn clone(&self) -> Uuid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Uuid

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

Formats the value using the given formatter.

impl Default for Uuid

fn default() -> Self

Returns the “default value” for a type.

impl Display for Uuid

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

Formats the value using the given formatter.

impl Hash for Uuid

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 Uuid

fn cmp(&self, other: &Self) -> 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 Uuid

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

fn partial_cmp(&self, other: &Self) -> 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 Copy for Uuid

impl Eq for Uuid

impl StructuralPartialEq for Uuid