Enum LogFormat 

#[non_exhaustive]
pub enum LogFormat {
    Json,
    Pretty,
}

Log output format for the subscriber’s fmt layer.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Json

Single-line JSON objects — the estate default for services, so collectors can parse without regex. Requires the json feature (enabled by default); requesting it without the feature is a configuration error, never a silent fallback.

Pretty

Human-oriented multi-line format with ANSI color when stderr is a TTY — for local development.

Trait Implementations

impl Clone for LogFormat

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LogFormat

impl Debug for LogFormat

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

Formats the value using the given formatter.

impl Default for LogFormat

fn default() -> Self

Returns the “default value” for a type.

impl Eq for LogFormat

impl PartialEq for LogFormat

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LogFormat