Enum MessageId 

pub enum MessageId {
    Uuid(u128),
    Sequence(u64),
    Custom(String),
    ContentHash(u64),
}

A unique identifier for messages.

Message IDs can be generated using various strategies:

• UUID: Globally unique, good for distributed systems
• Sequence: Monotonically increasing, good for ordered processing
• Custom: User-provided identifier (e.g., from source system)

Variants

Uuid(u128)

A UUID-based identifier (128-bit).

Sequence(u64)

A sequence-based identifier (64-bit).

Custom(String)

A custom string identifier.

ContentHash(u64)

A hash-based identifier derived from content.

Implementations

impl MessageId

pub fn new_uuid() -> Self

Create a new UUID-based message ID using UUIDv4.

pub const fn new_sequence(seq: u64) -> Self

Create a new sequence-based message ID.

pub fn new_custom(id: impl Into<String>) -> Self

Create a custom message ID from a string.

pub fn from_content(content: &[u8]) -> Self

Create a content-hash message ID from the given bytes.

pub const fn is_uuid(&self) -> bool

Returns true if this is a UUID-based ID.

pub const fn is_sequence(&self) -> bool

Returns true if this is a sequence-based ID.

pub const fn is_custom(&self) -> bool

Returns true if this is a custom ID.

pub const fn is_content_hash(&self) -> bool

Returns true if this is a content-hash ID.

Trait Implementations

impl Clone for MessageId

fn clone(&self) -> MessageId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageId

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

Formats the value using the given formatter.

impl Default for MessageId

fn default() -> Self

Returns the “default value” for a type.

impl Display for MessageId

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

Formats the value using the given formatter.

impl Hash for MessageId

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 PartialEq for MessageId

fn eq(&self, other: &MessageId) -> 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 Eq for MessageId

impl StructuralPartialEq for MessageId