Struct rustracing::log::StdErrorLogFieldsBuilder

pub struct StdErrorLogFieldsBuilder<'a>(_);

A specialized span log builder for the standard error log fields.

This builder automatically inserts the field LogField::new("event", "error").

Methods

impl<'a> StdErrorLogFieldsBuilder<'a>

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn kind<T>(&mut self, kind: T) -> &mut Self where     T: Into<Cow<'static, str>>,

Adds the field LogField::new("error.kind", kind).

kind is the type or "kind" of an error.

E.g., "Exception", "OSError"

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn message<T>(&mut self, message: T) -> &mut Self where     T: Into<Cow<'static, str>>,

Adds the field LogField::new("message", message).

message is a concise, human-readable, one-line message explaining the event.

E.g., "Could not connect to backend", "Cache invalidation succeeded"

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn object<T: Error>(&mut self, error: T) -> &mut Self

Adds "error.kind" and "message" fields.

These values are error.description() and error.to_string() respectively.

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

pub fn stack(&mut self) -> &mut Self

Adds the field LogField::new("stack", {stack trace}).

Trait Implementations

impl<'a> Debug for StdErrorLogFieldsBuilder<'a>

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

Formats the value using the given formatter.