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pub mod config;
use err_derive::Error;
use std::str::FromStr;
#[derive(Error, Debug)]
pub enum LoggerError {
#[error(display = "LoggerConfigurationError: [{}]", message)]
LoggerConfigurationError { message: String },
}
impl From<log::SetLoggerError> for LoggerError {
fn from(error: log::SetLoggerError) -> Self {
LoggerError::LoggerConfigurationError { message: format!("{}", error) }
}
}
impl From<std::io::Error> for LoggerError {
fn from(error: std::io::Error) -> Self {
LoggerError::LoggerConfigurationError { message: format!("{}", error) }
}
}
pub fn setup_logger(logger_config: &config::LoggerConfig) -> Result<(), LoggerError> {
let mut log_dispatcher = fern::Dispatch::new()
.format(|out, message, record| {
out.finish(format_args!(
"{}[{}][{}] {}",
chrono::Local::now().format("[%Y-%m-%d][%H:%M:%S]"),
record.target(),
record.level(),
message
))
})
.level(log::LevelFilter::from_str(&logger_config.level).map_err(|err| {
LoggerError::LoggerConfigurationError {
message: format!(
"The specified logger level is not valid: [{}]. err: {}",
&logger_config.level, err
),
}
})?);
if logger_config.stdout_output {
log_dispatcher = log_dispatcher.chain(std::io::stdout());
}
if logger_config.stderr_output {
log_dispatcher = log_dispatcher.chain(std::io::stderr());
}
if let Some(path) = &logger_config.file_output_path {
log_dispatcher = log_dispatcher.chain(fern::log_file(&path)?)
}
log_dispatcher.apply()?;
Ok(())
}