Struct EngineCheckpoint 

pub struct EngineCheckpoint {
    pub version: u32,
    pub window_states: HashMap<String, WindowCheckpoint>,
    pub sase_states: HashMap<String, SaseCheckpoint>,
    pub join_states: HashMap<String, JoinCheckpoint>,
    pub variables: HashMap<String, SerializableValue>,
    pub events_processed: u64,
    pub output_events_emitted: u64,
    pub watermark_state: Option<WatermarkCheckpoint>,
    pub distinct_states: HashMap<String, DistinctCheckpoint>,
    pub limit_states: HashMap<String, LimitCheckpoint>,
}

Checkpoint for a single engine instance (one context).

Fields

version: u32

Schema version for forward/backward compatibility.

window_states: HashMap<String, WindowCheckpoint>

Window states by stream name

sase_states: HashMap<String, SaseCheckpoint>

SASE+ pattern engine states by stream name

join_states: HashMap<String, JoinCheckpoint>

Join buffer states by stream name

variables: HashMap<String, SerializableValue>

Engine variables

events_processed: u64

Events processed counter

output_events_emitted: u64

Output events emitted counter

watermark_state: Option<WatermarkCheckpoint>

Watermark tracker state

distinct_states: HashMap<String, DistinctCheckpoint>

Distinct operator states by stream name (LRU keys snapshot)

limit_states: HashMap<String, LimitCheckpoint>

Limit operator states by stream name (counter snapshot)

Implementations

impl EngineCheckpoint

pub const fn validate_and_migrate(&mut self) -> Result<(), StoreError>

Validate and migrate a checkpoint to the current schema version.

Returns Err if the checkpoint is from a future version that this binary does not understand (forward-incompatible).

Trait Implementations

impl Clone for EngineCheckpoint

fn clone(&self) -> EngineCheckpoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineCheckpoint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EngineCheckpoint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EngineCheckpoint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.