[−][src]Crate async_logger_log
Asyncronous logger implementation of log facade. The implementation is
based on async_logger crate, and allows non-blocking writes of
log records in memory buffer, which in turn then processed in separate thread by writer (see
more details in async_logger
documentation).
Default log record format includes date, time, timezone, log level, target, and log message itself. Log record example:
[2020-03-15 11:47:32.339865887+0100 WARN thread]: log message.
The log record format, and other parameters are customizable with LoggerBuilder
.
Examples
use async_logger_log::Logger; use log::{info, warn}; let logger = Logger::new("/tmp", 65536).expect("Failed to create Logger instance"); log::set_boxed_logger(Box::new(logger)).expect("Failed to set logger"); log::set_max_level(log::LevelFilter::Info); info!("{}", "test msg"); warn!("{}", "warning msg"); log::logger().flush();
Custom writer and formatter:
use async_logger_log::Logger; use async_logger::Writer; use log::{debug, Record}; // Custom formatting of `log::Record` fn custom_formatter(record: &Record) -> String { format!("log record: {}\n", record.args()) } struct WriterTest {} // Writer simply prints log messages to stdout impl Writer for WriterTest { fn process_slice(&mut self, slice: &[u8]) { println!("Got log message: {}", String::from_utf8_lossy(slice)); } fn flush(&mut self) { } } let logger = Logger::builder() .buf_size(100) .formatter(custom_formatter) .writer(Box::new(WriterTest {})) .build() .unwrap(); log::set_boxed_logger(Box::new(logger)).expect("Failed to set logger"); log::set_max_level(log::LevelFilter::Trace); debug!("{}", "Hello, Wrold!"); log::logger().flush();
Structs
Logger | Log trait implementation. |
LoggerBuilder | Builder of |