Struct LogfmtFormat 

pub struct LogfmtFormat { /* private fields */ }

Available on crate feature logfmt only.

logfmt formatter. See the module docs for the wire format.

User keys named timestamp, level, target, message, file or line are written as fields.<name>.

Examples

use log_io::format::{Format, LogfmtFormat};
use log_io::{Field, Level, Metadata, Record};

let fields = [Field::new("port", 8080_u32), Field::new("path", "/a b")];
let record = Record::new(Metadata::new(Level::Info, "app"), "ok", &fields);

let mut out = String::new();
LogfmtFormat::new().write_record(&record, &mut out)?;
assert_eq!(out, "level=info target=app message=ok port=8080 path=\"/a b\"\n");

Implementations

impl LogfmtFormat

pub const fn new() -> Self

New logfmt formatter.

pub const fn timestamp_rfc3339(self, enabled: bool) -> Self

Emit timestamps as RFC 3339 (timestamp=2023-11-14T22:13:20.000000000Z) instead of Unix nanoseconds (the default).

Trait Implementations

impl Clone for LogfmtFormat

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 LogfmtFormat

impl Debug for LogfmtFormat

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

Formats the value using the given formatter.

impl Default for LogfmtFormat

fn default() -> Self

Returns the “default value” for a type.

impl Format for LogfmtFormat

fn write_record(&self, record: &Record<'_>, writer: &mut dyn Write) -> Result

Write record to writer.

fn write_record_generic<W: Write>( &self, record: &Record<'_>, writer: &mut W, ) -> Result

Statically dispatched variant of Format::write_record.