Enum ScryerFilter 

pub enum ScryerFilter {
    Fields(FieldSet),
    And(Vec<ScryerFilter>),
    Or(Vec<ScryerFilter>),
    Not(Box<ScryerFilter>),
    Any,
    HealthSignal(HealthSignal),
}

The filter shape tower hands to scryer.subscribe.

Fields captures the indexable constraints that scryer can push down to its SQL indexes. Boolean variants allow compound predicates to be evaluated entirely inside scryer when the substrate supports it; in the current P2 stub tower evaluates them in-process via matches.

Variants

Fields(FieldSet)

Indexable field constraints — the fast path scryer evaluates first.

And(Vec<ScryerFilter>)

All children must match.

Or(Vec<ScryerFilter>)

At least one child must match.

Not(Box<ScryerFilter>)

The single child must NOT match.

Any

Matches every event regardless of content.

HealthSignal(HealthSignal)

Subscribe to scryer’s own health signal stream for this specific signal. Opens a parallel subscription, not against the main event store.

Implementations

impl ScryerFilter

pub fn matches(&self, event: &Event) -> bool

Returns true if event satisfies this filter.

Rate predicates inside Fields are not evaluated here — they require a sliding window maintained by the supervisor (F3). All other constraints are checked in full.

Trait Implementations

impl Clone for ScryerFilter

fn clone(&self) -> ScryerFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScryerFilter

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

Formats the value using the given formatter.

impl PartialEq for ScryerFilter

fn eq(&self, other: &ScryerFilter) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ScryerFilter