src/bin/obnam-benchmark.rs


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use obnam_benchmark::Specification;
use std::fs::File;
use std::path::PathBuf;
use std::process::exit;
use structopt::StructOpt;

#[derive(Debug, StructOpt)]
struct Opt {
    #[structopt(subcommand)]
    cmd: Command,
}

#[derive(Debug, StructOpt)]
enum Command {
    Spec(Spec),
}

#[derive(Debug, StructOpt)]
struct Spec {
    #[structopt(parse(from_os_str))]
    spec: PathBuf,

    #[structopt(long, parse(from_os_str))]
    output: PathBuf,
}

fn main() {
    if let Err(err) = real_main() {
        eprintln!("ERROR: {}", err);
        exit(1);
    }
}

fn real_main() -> anyhow::Result<()> {
    let opt = Opt::from_args();

    match opt.cmd {
        Command::Spec(x) => x.run()?,
    }

    Ok(())
}

impl Spec {
    fn run(&self) -> anyhow::Result<()> {
        let input = File::open(&self.spec)?;
        let spec: Specification = serde_yaml::from_reader(&input)?;

        let output = File::create(&self.output)?;
        serde_json::to_writer(&output, &spec)?;

        Ok(())
    }
}