Enum EngineEvent 

#[non_exhaustive]
pub enum EngineEvent {
    RunStarted {
        workflow_name: String,
    },
    RunCompleted {
        succeeded: bool,
    },
    RunResumed {
        workflow_name: String,
    },
    RunCancelled {
        reason: CancellationReason,
    },
    StepStarted {
        step_name: String,
    },
    StepCompleted {
        step_name: String,
        succeeded: bool,
    },
    StepRetrying {
        step_name: String,
        attempt: u32,
    },
    GateWaiting {
        gate_name: String,
    },
    GateResolved {
        gate_name: String,
        approved: bool,
    },
    FanOutItemsCollected {
        count: usize,
    },
    FanOutItemStarted {
        item_id: String,
    },
    FanOutItemCompleted {
        item_id: String,
        succeeded: bool,
    },
    MetricsUpdated {
        total_cost: f64,
        total_turns: i64,
        total_duration_ms: i64,
    },
    Panicked {
        message: String,
        backtrace: String,
    },
}

Workflow engine event variants emitted after each DB-write state transition.

Marked #[non_exhaustive] so downstream crates must handle an _ arm — future variants can be added without breaking existing sinks.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

RunStarted

Fields

workflow_name: String

RunCompleted

Fields

succeeded: bool

RunResumed

Fields

workflow_name: String

RunCancelled

Fields

reason: CancellationReason

StepStarted

Fields

step_name: String

StepCompleted

Fields

step_name: String

succeeded: bool

StepRetrying

Fields

step_name: String

attempt: u32

GateWaiting

Fields

gate_name: String

GateResolved

Fields

gate_name: String

approved: bool

FanOutItemsCollected

Fields

count: usize

FanOutItemStarted

Fields

item_id: String

FanOutItemCompleted

Fields

item_id: String

succeeded: bool

MetricsUpdated

Fields

total_cost: f64

total_turns: i64

total_duration_ms: i64

Panicked

Fields

message: String

backtrace: String

Trait Implementations

impl Clone for EngineEvent

fn clone(&self) -> EngineEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineEvent

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

Formats the value using the given formatter.