Trait TraceEvent 

pub trait TraceEvent {
    type Ref<'a>;

    // Required methods
    fn event_name() -> &'static str;
    fn field_defs() -> Vec<FieldDef>;
    fn timestamp(&self) -> u64;
    fn encode_fields<W: Write>(
        &self,
        enc: &mut EventEncoder<'_, W>,
    ) -> Result<()>;
    fn decode<'a>(
        timestamp_ns: Option<u64>,
        fields: &[FieldValueRef<'a>],
        field_defs: &[FieldDef],
    ) -> Option<Self::Ref<'a>>;

    // Provided methods
    fn has_timestamp() -> bool { ... }
    fn schema_entry() -> SchemaEntry { ... }
}

Trait implemented by #[derive(TraceEvent)] for compile-time event types.

Required Associated Types

type Ref<'a>

Decoded form of this event, potentially borrowing from the input buffer.

Required Methods

fn event_name() -> &'static str

The event type name (used in schema registration).

fn field_defs() -> Vec<FieldDef>

Field definitions for schema registration. When has_timestamp() is true, the timestamp is NOT included here — it is encoded in the event frame header.

fn timestamp(&self) -> u64

Return the event’s timestamp in nanoseconds.

fn encode_fields<W: Write>(&self, enc: &mut EventEncoder<'_, W>) -> Result<()>

Encode this event’s non-timestamp fields into the encoder.

fn decode<'a>( timestamp_ns: Option<u64>, fields: &[FieldValueRef<'a>], field_defs: &[FieldDef], ) -> Option<Self::Ref<'a>>

Decode from field values using field definitions for name resolution. timestamp_ns is the absolute timestamp from the event header (if present).

Provided Methods

fn has_timestamp() -> bool

Whether this event type carries a packed timestamp in the event header.

fn schema_entry() -> SchemaEntry

Build a SchemaEntry for this event type.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors