Struct FieldFormatter 

pub struct FieldFormatter { /* private fields */ }

Serif’s formatter for event and span metadata fields.

FieldFormatter is intended to be used with SubscriberBuilder::fmt_fields and is designed to work with EventFormatter’s output format.

FieldFormatter implements FormatFields, though this isn’t immediately clear in Rustdoc. Specifically, FieldFormatter implements MakeVisitor, and FieldVisitor implements Visit, VisitOutput, and VisitFmt. Thanks to blanket impls in the tracing_subscriber crate, this means that FieldFormatter implements FormatFields.

Field Format

If a field is named message, then it’s printed in the default text style. All other fields are formatted in square brackets and dimmed text style like [name=value]. Padding is added on either side of the message field, but not around other fields.

Implementations

impl FieldFormatter

pub fn new() -> Self

Create a new FieldFormatter with the default configuration.

Trait Implementations

impl Clone for FieldFormatter

fn clone(&self) -> FieldFormatter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldFormatter

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

Formats the value using the given formatter.

impl Default for FieldFormatter

fn default() -> Self

Returns the “default value” for a type.

impl<'a> MakeVisitor<Writer<'a>> for FieldFormatter

type Visitor = FieldVisitor<'a>

The visitor type produced by this MakeVisitor.

fn make_visitor(&self, target: Writer<'a>) -> Self::Visitor

Make a new visitor for the provided target.