Struct Checkpoint 

pub struct Checkpoint {
    pub stream_id: String,
    pub partition: u32,
    pub offset: i64,
    pub timestamp: i64,
    pub metadata: HashMap<String, String>,
}

A committed offset for one stream partition.

Fields

stream_id: String

Logical stream name.

partition: u32

Partition index within the stream.

offset: i64

Consumed-up-to offset (inclusive).

timestamp: i64

Wall-clock timestamp when the checkpoint was committed (epoch millis).

metadata: HashMap<String, String>

Arbitrary application metadata (e.g. consumer group, host, version).

Implementations

impl Checkpoint

pub fn new( stream_id: impl Into<String>, partition: u32, offset: i64, timestamp: i64, ) -> Self

Create a minimal checkpoint with no metadata.

pub fn with_meta(self, key: impl Into<String>, value: impl Into<String>) -> Self

Builder helper: attach a single metadata entry.

Trait Implementations

impl Clone for Checkpoint

fn clone(&self) -> Checkpoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Checkpoint

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

Formats the value using the given formatter.

impl PartialEq for Checkpoint

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

impl StructuralPartialEq for Checkpoint