Struct Hook 

pub struct Hook {
    pub name: String,
    pub callback: HookCallback,
}

An observer or interceptor attached to a pipeline via Pipeline::hook.

Construct with Hook::observer for read-only event tracing or Hook::interceptor for callbacks that can abort the pipeline. Built-in hooks (Logger, Profiler, StepFilter, and friends) implement Into<Hook> so they can be passed directly to Pipeline::hook.

Fields

name: String

The hook’s name, surfaced in abort messages.

callback: HookCallback

The underlying callback.

Implementations

impl Hook

pub fn observer( name: impl Into<String>, f: impl Fn(&HookEvent<'_>, &Store<StoreEntry>) + Send + 'static, ) -> Self

Wraps a closure as a read-only observer hook. Observers cannot abort the pipeline.

pub fn interceptor( name: impl Into<String>, f: impl Fn(&HookEvent<'_>, &Store<StoreEntry>) -> HookAction + Send + 'static, ) -> Self

Wraps a closure as an interceptor hook. Interceptors inspect each event and return a HookAction — use HookAction::Abort to stop the pipeline.

Trait Implementations

impl From<EventLog> for Hook

fn from(event_log: EventLog) -> Hook

Converts to this type from the input type.

impl From<Logger> for Hook

fn from(logger: Logger) -> Hook

Converts to this type from the input type.

impl From<Profiler> for Hook

fn from(profiler: Profiler) -> Hook

Converts to this type from the input type.

impl From<StepFilter> for Hook

fn from(filter: StepFilter) -> Hook

Converts to this type from the input type.

impl From<StoreValidator> for Hook

fn from(validator: StoreValidator) -> Hook

Converts to this type from the input type.

impl From<Timeout> for Hook

fn from(timeout: Timeout) -> Hook

Converts to this type from the input type.