direct_logger.rs - mozsearch

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/*!

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());