eba4fd1
use std::path::{Path, PathBuf};
use anyhow::{Context, anyhow};
fn generate<F>(generate: F) -> anyhow::Result<String>
where
F: FnOnce() -> anyhow::Result<String> + Send + 'static,
{
std::thread::Builder::new()
.stack_size(256 * 1024 * 1024)
.spawn(generate)
.context("spawn generator thread")?
.join()
.map_err(|_| anyhow!("openapi generation panicked (stack overflow?)"))?
}
fn check_file(path: &Path, json: &str) -> anyhow::Result<()> {
let existing =
std::fs::read_to_string(path).with_context(|| format!("reading {}", path.display()))?;
if existing.trim_end() != json.trim_end() {
eprintln!(
"{} is out of date; run `cargo run -p openapi` to regenerate",
path.display()
);
std::process::exit(1);
}
Ok(())
}
fn main() -> anyhow::Result<()> {
let web = generate(|| {
let doc = webapi::openapi::api_doc();
doc.to_pretty_json().context("serializing web openapi doc")
})?;
let crate_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
let root = crate_dir
.ancestors()
.nth(2)
.ok_or_else(|| anyhow!("workspace root not found above {}", crate_dir.display()))?;
let web_path = root.join("openapi.json");
let check = std::env::args().nth(1).as_deref() == Some("--check");
if check {
check_file(&web_path, &web)?;
println!("openapi.json is up to date");
return Ok(());
}
std::fs::write(&web_path, web).with_context(|| format!("writing {}", web_path.display()))?;
println!("wrote {}", web_path.display());
Ok(())
}