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|
#![warn(clippy::pedantic)]
use crate::cacache::Cache;
use anyhow::anyhow;
use rayon::prelude::*;
use serde_json::{Map, Value};
use std::{
env, fs,
path::Path,
process::{self, Command},
};
use tempfile::tempdir;
mod cacache;
mod parse;
/// `fixup_lockfile` removes the `integrity` field from Git dependencies.
///
/// Git dependencies from specific providers can be retrieved from those providers' automatic tarball features.
/// When these dependencies are specified with a commit identifier, npm generates a tarball, and inserts the integrity hash of that
/// tarball into the lockfile.
///
/// Thus, we remove this hash, to replace it with our own determinstic copies of dependencies from hosted Git providers.
fn fixup_lockfile(mut lock: Map<String, Value>) -> anyhow::Result<Option<Map<String, Value>>> {
if lock
.get("lockfileVersion")
.ok_or_else(|| anyhow!("couldn't get lockfile version"))?
.as_i64()
.ok_or_else(|| anyhow!("lockfile version isn't an int"))?
< 2
{
return Ok(None);
}
let mut fixed = false;
for package in lock
.get_mut("packages")
.ok_or_else(|| anyhow!("couldn't get packages"))?
.as_object_mut()
.ok_or_else(|| anyhow!("packages isn't a map"))?
.values_mut()
{
if let Some(Value::String(resolved)) = package.get("resolved") {
if resolved.starts_with("git+ssh://") && package.get("integrity").is_some() {
fixed = true;
package
.as_object_mut()
.ok_or_else(|| anyhow!("package isn't a map"))?
.remove("integrity");
}
}
}
if fixed {
lock.remove("dependencies");
Ok(Some(lock))
} else {
Ok(None)
}
}
fn main() -> anyhow::Result<()> {
let args = env::args().collect::<Vec<_>>();
if args.len() < 2 {
println!("usage: {} <path/to/package-lock.json>", args[0]);
println!();
println!("Prefetches npm dependencies for usage by fetchNpmDeps.");
process::exit(1);
}
if args[1] == "--fixup-lockfile" {
let lock = serde_json::from_str(&fs::read_to_string(&args[2])?)?;
if let Some(fixed) = fixup_lockfile(lock)? {
println!("Fixing lockfile");
fs::write(&args[2], serde_json::to_string(&fixed)?)?;
}
return Ok(());
}
let lock_content = fs::read_to_string(&args[1])?;
let out_tempdir;
let (out, print_hash) = if let Some(path) = args.get(2) {
(Path::new(path), false)
} else {
out_tempdir = tempdir()?;
(out_tempdir.path(), true)
};
let packages = parse::lockfile(&lock_content, env::var("FORCE_GIT_DEPS").is_ok())?;
let cache = Cache::new(out.join("_cacache"));
packages.into_par_iter().try_for_each(|package| {
eprintln!("{}", package.name);
let tarball = package.tarball()?;
let integrity = package.integrity();
cache
.put(
format!("make-fetch-happen:request-cache:{}", package.url),
package.url,
&tarball,
integrity,
)
.map_err(|e| anyhow!("couldn't insert cache entry for {}: {e:?}", package.name))?;
Ok::<_, anyhow::Error>(())
})?;
fs::write(out.join("package-lock.json"), lock_content)?;
if print_hash {
Command::new("nix")
.args(["--experimental-features", "nix-command", "hash", "path"])
.arg(out.as_os_str())
.status()?;
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::fixup_lockfile;
use serde_json::json;
#[test]
fn lockfile_fixup() -> anyhow::Result<()> {
let input = json!({
"lockfileVersion": 2,
"name": "foo",
"packages": {
"": {
},
"foo": {
"resolved": "https://github.com/NixOS/nixpkgs",
"integrity": "aaa"
},
"bar": {
"resolved": "git+ssh://git@github.com/NixOS/nixpkgs.git",
"integrity": "bbb"
}
}
});
let expected = json!({
"lockfileVersion": 2,
"name": "foo",
"packages": {
"": {
},
"foo": {
"resolved": "https://github.com/NixOS/nixpkgs",
"integrity": "aaa"
},
"bar": {
"resolved": "git+ssh://git@github.com/NixOS/nixpkgs.git",
}
}
});
assert_eq!(
fixup_lockfile(input.as_object().unwrap().clone())?,
Some(expected.as_object().unwrap().clone())
);
assert_eq!(
fixup_lockfile(json!({"lockfileVersion": 1}).as_object().unwrap().clone())?,
None
);
Ok(())
}
}
|
