Struct NestedFmt

pub struct NestedFmt;

Policy to insert span data as object.

Specifically, any span’s or event metadata’s attributes are associated with its name inside record. For example having span lolka would add key lolka to the record, with span’s attributes as value.

Special case is event metadata which is always inserted with key metadata and contains information such location in code and event level.

Trait Implementations

impl FieldFormatter for NestedFmt

fn on_event<'a, R: LookupSpan<'a>>( &self, event_record: &mut Record, event: &Event<'_>, current_span: Option<SpanRef<'a, R>>, )

Handler for when Layer::on_event is invoked.

fn on_new_span<C: Collect + for<'a> LookupSpan<'a>>( &self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, C>, )

Handler for when Layer::new_span is invoked.

fn on_record<C: Collect + for<'a> LookupSpan<'a>>( &self, id: &Id, values: &Record<'_>, ctx: Context<'_, C>, )

Handler for when Layer::new_span is invoked.