Struct VersionToken 

pub struct VersionToken { /* private fields */ }

Opaque version token that abstracts store-specific versioning.

Different stores use different versioning schemes:

• NATS: 8-byte u64 revision
• FDB: 10-byte versionstamp
• Redis: could be stream ID + sequence

Stored inline (no heap allocation) — fits up to 10 bytes, which covers every current backend.

Implementations

impl VersionToken

pub fn unknown() -> Self

Create an empty/unknown version (for entries without version info).

pub fn is_unknown(&self) -> bool

Check if this is an unknown/empty version.

pub fn from_u64(rev: u64) -> Self

Create from NATS u64 revision.

pub fn as_u64(&self) -> Option<u64>

Try to extract as u64 (for NATS compatibility).

pub fn as_bytes(&self) -> &[u8]

Get the raw bytes.

Trait Implementations

impl Clone for VersionToken

fn clone(&self) -> VersionToken

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionToken

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

Formats the value using the given formatter.

impl Default for VersionToken

fn default() -> VersionToken

Returns the “default value” for a type.

impl Hash for VersionToken

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 VersionToken

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

impl StructuralPartialEq for VersionToken