Struct FilteredFormatFields

pub struct FilteredFormatFields<Format, Filter> { /* private fields */ }

Wraps around an existing struct that impls FormatFields, but allows for filtering specific fields from spans or events.

Implementations

impl<'writer, Format, Filter> FilteredFormatFields<Format, Filter>

where Format: MakeVisitor<Writer<'writer>>, Format::Visitor: VisitFmt + VisitOutput<Result>, Filter: Clone + Fn(&Field) -> bool,

pub fn new(format: Format, filter: Filter) -> Self

Wraps around an existing struct that impls FormatFields, but filters out any fields which returns false when passed into filter.

Trait Implementations

impl<'writer, Format, Filter> FormatFields<'writer> for FilteredFormatFields<Format, Filter>

where Format: MakeVisitor<Writer<'writer>>, Format::Visitor: VisitFmt + VisitOutput<Result>, Filter: Clone + Fn(&Field) -> bool,

fn format_fields<R: RecordFields>( &self, writer: Writer<'writer>, fields: R, ) -> Result

Format the provided fields to the provided Writer, returning a result.

fn add_fields( &self, current: &'writer mut FormattedFields<Self>, fields: &Record<'_>, ) -> Result<(), Error>

Record additional field(s) on an existing span.