| /*! |
| Using `env_logger::Logger` and the `log::Log` trait directly. |
| |
| This example doesn't rely on environment variables, or having a static logger installed. |
| */ |
| |
| use env_logger::{Builder, WriteStyle}; |
| |
| use log::{Level, LevelFilter, Log, MetadataBuilder, Record}; |
| |
| fn record() -> Record<'static> { |
| let error_metadata = MetadataBuilder::new() |
| .target("myApp") |
| .level(Level::Error) |
| .build(); |
| |
| Record::builder() |
| .metadata(error_metadata) |
| .args(format_args!("Error!")) |
| .line(Some(433)) |
| .file(Some("app.rs")) |
| .module_path(Some("server")) |
| .build() |
| } |
| |
| fn main() { |
| let stylish_logger = Builder::new() |
| .filter(None, LevelFilter::Error) |
| .write_style(WriteStyle::Always) |
| .build(); |
| |
| let unstylish_logger = Builder::new() |
| .filter(None, LevelFilter::Error) |
| .write_style(WriteStyle::Never) |
| .build(); |
| |
| stylish_logger.log(&record()); |
| unstylish_logger.log(&record()); |
| } |