Struct ChangeEvent 

#[non_exhaustive]
pub struct ChangeEvent {
    pub id: u64,
    pub verb: ChangeVerb,
    pub path: ValidatedWorldPath,
    pub etag: String,
}

Protocol-neutral change event delivered to subscribers.

On targets with native 64-bit atomics, ids advance through the full u64 range via AtomicU64. On 32-bit targets without native 64-bit atomics, a mutex-backed u64 counter provides the same external id range. The counter uses saturating increments, so u64::MAX is the rollover-imminent signal on all platforms.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

id: u64

Monotonically increasing event id. Use this as since for resumed subscriptions.

verb: ChangeVerb

Engine mutation that produced the change.

path: ValidatedWorldPath

Canonical world path the change applies to.

etag: String

Strong ETag after the change (empty string for ChangeVerb::Delete).

Trait Implementations

impl Clone for ChangeEvent

fn clone(&self) -> ChangeEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChangeEvent

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

Formats the value using the given formatter.