pg_exporter 0.1.0

PostgreSQL metric exporter for Prometheus
Documentation 
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use clap::{
    Arg, ArgAction, ColorChoice, Command,
    builder::styling::{AnsiColor, Effects, Styles},
};

pub mod built_info {
    include!(concat!(env!("OUT_DIR"), "/built.rs"));
}

pub fn new() -> Command {
    let styles = Styles::styled()
        .header(AnsiColor::Yellow.on_default() | Effects::BOLD)
        .usage(AnsiColor::Green.on_default() | Effects::BOLD)
        .literal(AnsiColor::Blue.on_default() | Effects::BOLD)
        .placeholder(AnsiColor::Green.on_default());

    Command::new("pg_exporter")
        .about("PostgreSQL metric exporter for Prometheus")
        .version(env!("CARGO_PKG_VERSION"))
        .long_version(built_info::GIT_COMMIT_HASH.to_owned())
        .color(ColorChoice::Auto)
        .styles(styles)
        .arg(
            Arg::new("dsn")
                .long("dsn")
                .help("Database connection string")
                .env("DSN")
                .value_name("DSN")
                .required(true),
        )
        .arg(
            Arg::new("verbose")
                .short('v')
                .long("verbose")
                .help("Increase verbosity, -vv for debug")
                .action(ArgAction::Count),
        )
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_defaults() {
        let matches = new().try_get_matches_from(["pg_exporter"]);

        assert!(matches.is_err());
    }
}