Struct WatchEventRecord 

pub struct WatchEventRecord {
    pub entity_id: [u8; 16],
    pub collective_id: [u8; 16],
    pub event_type: WatchEventTypeTag,
    pub timestamp_ms: i64,
    pub entity_type: EntityTypeTag,
}

A persisted watch event for cross-process change detection (schema v2).

This is the on-disk representation — compact and self-contained. Converted to the public WatchEvent type when returned to callers.

Uses raw byte arrays for IDs (not UUID wrappers) to keep serialization simple and avoid coupling the storage format to the public type system.

Schema v2 Changes

In v1, this struct only tracked experiences (experience_id). In v2, the field is renamed to entity_id and an entity_type discriminant is added to track all entity types (relations, insights, collectives).

Fields

entity_id: [u8; 16]

The entity that changed (16-byte UUID).

For experiences this is an ExperienceId, for relations a RelationId, etc.

collective_id: [u8; 16]

The collective this entity belongs to (16-byte UUID).

event_type: WatchEventTypeTag

What kind of change occurred.

timestamp_ms: i64

When the change occurred (milliseconds since Unix epoch).

entity_type: EntityTypeTag

What kind of entity changed (schema v2).

Trait Implementations

impl Clone for WatchEventRecord

fn clone(&self) -> WatchEventRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WatchEventRecord

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WatchEventRecord

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<WatchEventRecord> for WatchEvent

fn from(record: WatchEventRecord) -> Self

Converts to this type from the input type.

impl Serialize for WatchEventRecord

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

where __S: Serializer,

Serialize this value into the given Serde serializer.