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use log::{debug, error, info};
use obnam_benchmark::builder::{which_obnam, ObnamBuilder, WhichObnam};
use obnam_benchmark::junk::junk;
use obnam_benchmark::report::Reporter;
use obnam_benchmark::result::SuiteMeasurements;
use obnam_benchmark::specification::Specification;
use obnam_benchmark::suite::Suite;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
use std::process::exit;
use structopt::StructOpt;
fn main() {
pretty_env_logger::init_custom_env("OBNAM_BENCHMARK_LOG");
info!("obnam-benchmark starts");
if let Err(err) = real_main() {
eprintln!("ERROR: {}", err);
error!("{}", err);
exit(1);
}
info!("obnam-benchmark ends successfully");
}
fn real_main() -> anyhow::Result<()> {
debug!("parsing command line");
let opt = Opt::from_args();
debug!("parsed: {:#?}", opt);
match opt.cmd {
Command::GenerateJunk(x) => x.run()?,
Command::Run(x) => x.run()?,
Command::Spec(x) => x.run()?,
Command::Steps(x) => x.run()?,
Command::Report(x) => x.run()?,
}
Ok(())
}
#[derive(Debug, StructOpt)]
struct Opt {
#[structopt(subcommand)]
cmd: Command,
}
#[derive(Debug, StructOpt)]
enum Command {
/// Run benchmarks
Run(Run),
/// Dump the specification as JSON
Spec(Spec),
/// Generate some junk data in a file.
GenerateJunk(GenerateJunk),
/// Show the steps for running a benchmark.
Steps(Steps),
/// Report results for several benchmarks.
Report(Report),
}
#[derive(Debug, StructOpt)]
struct Run {
/// Name of the specification file
#[structopt(parse(from_os_str))]
spec: PathBuf,
/// Name of file where the results will be written. Default is
/// stdout.
#[structopt(long, parse(from_os_str))]
output: Option<PathBuf>,
/// Construct output filename from benchmark run metadata.
#[structopt(short, long)]
auto: bool,
/// Which Obnam to run? Defaults to installed. Value is
/// "installed" or a git commit ref.
#[structopt(long, default_value = "installed", parse(try_from_str = which_obnam))]
obnam: WhichObnam,
}
impl Run {
fn run(&self) -> anyhow::Result<()> {
info!("running benchmarks from {}", self.spec.display());
let spec = Specification::from_file(&self.spec)?;
let builder = ObnamBuilder::new(&self.obnam)?;
let obnam_version = builder.version()?;
let mut suite = Suite::new(&builder)?;
let mut result = SuiteMeasurements::new(obnam_version)?;
for step in spec.steps().iter() {
result.push(suite.execute(step)?);
}
let output = serde_json::to_string_pretty(&result)?;
if let Some(filename) = &self.output {
std::fs::write(filename, output)?
} else if self.auto {
let filename = format!("{}_{}.json", result.hostname(), result.timestamp());
std::fs::write(filename, output)?
} else {
std::io::stdout().write_all(output.as_bytes())?;
};
Ok(())
}
}
#[derive(Debug, StructOpt)]
struct Spec {
/// Name of the specification file
#[structopt(parse(from_os_str))]
spec: PathBuf,
/// Name of JSON file to write
#[structopt(long, parse(from_os_str))]
output: PathBuf,
}
impl Spec {
fn run(&self) -> anyhow::Result<()> {
info!("dumping specification file as JSON");
debug!("reading specification from {}", self.spec.display());
let input = File::open(&self.spec)?;
let spec: Specification = serde_yaml::from_reader(&input)?;
debug!("writing specification as JSON to {}", self.output.display());
let output = File::create(&self.output)?;
serde_json::to_writer(&output, &spec)?;
Ok(())
}
}
#[derive(Debug, StructOpt)]
struct GenerateJunk {
/// Number of bytes of junk to create
#[structopt()]
bytes: u64,
/// Name of the output file
#[structopt(parse(from_os_str))]
filename: PathBuf,
}
impl GenerateJunk {
fn run(&self) -> anyhow::Result<()> {
info!(
"generating {} bytes of junk into {}",
self.bytes,
self.filename.display()
);
let mut output = File::create(&self.filename)?;
junk(&mut output, self.bytes)?;
Ok(())
}
}
#[derive(Debug, StructOpt)]
struct Steps {
/// Name of the specification file
#[structopt(parse(from_os_str))]
spec: PathBuf,
}
impl Steps {
fn run(&self) -> anyhow::Result<()> {
info!(
"showing steps to run benchmarks from {}",
self.spec.display()
);
let spec = Specification::from_file(&self.spec)?;
for step in spec.steps().iter() {
println!("{:?}", step);
}
Ok(())
}
}
#[derive(Debug, StructOpt)]
struct Report {
/// Names of the results file for which to produce a report.
#[structopt(parse(from_os_str))]
filenames: Vec<PathBuf>,
}
impl Report {
fn run(&self) -> anyhow::Result<()> {
info!("Reporting results");
let mut report = Reporter::default();
for filename in self.filenames.iter() {
report.push(SuiteMeasurements::from_file(filename)?);
}
report.write(&mut std::io::stdout())?;
Ok(())
}
}
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