Struct LogFormat

pub struct LogFormat { /* private fields */ }

Custom formatter which adds into a log sink

Implementations

impl LogFormat

pub fn new(time_fmt: &str, format_fn: FormatFunc) -> Self

Arguments

time_fmt: refer to chrono::format::strftime.

format_fn: Since std::fmt only support compile time format, you have to write a static function to format the log line

Example

use captains_log::{LogRawFile, LogFormat, FormatRecord};
fn format_f(r: FormatRecord) -> String {
    let time = r.time();
    let level = r.level();
    let msg = r.msg();
    let req_id = r.key("req_id");
    format!("[{time}][{level}] {msg}{req_id}\n").to_string()
}
let log_format = LogFormat::new("%Y-%m-%d %H:%M:%S%.6f", format_f);
let log_sink = LogRawFile::new("/tmp", "test.log", log::Level::Info, log_format);

Trait Implementations

impl Clone for LogFormat

fn clone(&self) -> LogFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Hash for LogFormat

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.