Initializes logging with fern
(
verbosity: VerbosityLevel,
quiet_mode: bool,
)
| 74 | |
| 75 | /// Initializes logging with fern |
| 76 | pub(crate) fn initialize_logging( |
| 77 | verbosity: VerbosityLevel, |
| 78 | quiet_mode: bool, |
| 79 | ) -> Result<(), anyhow::Error> { |
| 80 | let mut unknown_log_filter_level = None; |
| 81 | let log_filter_level = if quiet_mode { |
| 82 | // First option: disable logging in quiet mode |
| 83 | log::LevelFilter::Off |
| 84 | } else { |
| 85 | // Second option: use verbosity level |
| 86 | verbosity.into_filter().unwrap_or_else(|| { |
| 87 | // Third option: use log level from env |
| 88 | if let Some(log_level) = env::var_os("RUST_LOG") { |
| 89 | let log_level = log_level.to_string_lossy().to_ascii_lowercase(); |
| 90 | match log_level.as_str() { |
| 91 | "off" => log::LevelFilter::Off, |
| 92 | "error" => log::LevelFilter::Error, |
| 93 | "warn" => log::LevelFilter::Warn, |
| 94 | "info" => log::LevelFilter::Info, |
| 95 | "debug" => log::LevelFilter::Debug, |
| 96 | "trace" => log::LevelFilter::Trace, |
| 97 | _ => { |
| 98 | unknown_log_filter_level = Some(log_level); |
| 99 | log::LevelFilter::Info |
| 100 | } |
| 101 | } |
| 102 | } else { |
| 103 | // Fourth option: use default level |
| 104 | log::LevelFilter::Info |
| 105 | } |
| 106 | }) |
| 107 | }; |
| 108 | |
| 109 | if matches!(verbosity, VerbosityLevel::None) { |
| 110 | build_logger(log_filter_level, |out, message, record| { |
| 111 | out.finish(format_args!( |
| 112 | "[{}][{}] {}", |
| 113 | chrono::Local::now().format("%T%.3f"), |
| 114 | record.level(), |
| 115 | message |
| 116 | )) |
| 117 | })?; |
| 118 | } else { |
| 119 | build_logger(log_filter_level, |out, message, record| { |
| 120 | out.finish(format_args!( |
| 121 | "[{}][{}][{}] {}", |
| 122 | chrono::Local::now().to_rfc3339_opts(chrono::SecondsFormat::Micros, false), |
| 123 | record.target(), |
| 124 | record.level(), |
| 125 | message |
| 126 | )) |
| 127 | })?; |
| 128 | } |
| 129 | |
| 130 | if let Some(filter_level) = unknown_log_filter_level { |
| 131 | error!( |
| 132 | "Unknown log filter level '{}' defined in 'RUST_LOG' env variable, using INFO instead.", |
| 133 | filter_level |
no test coverage detected