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|
use std::collections::HashMap;
use std::fs;
use anyhow::Context;
use flate2::write::GzEncoder;
use flate2::Compression;
use once_cell::sync::Lazy;
use tar::Builder;
use crate::testdata_path;
static CUSTOM_NPM_PACKAGE_CACHE: Lazy<Result<CustomNpmPackageCache, String>> =
Lazy::new(|| CustomNpmPackageCache::load().map_err(|e| e.to_string()));
/// Get a reference to the custom npm cache which is lazily created.
pub fn custom_npm_cache(
) -> Result<&'static CustomNpmPackageCache, anyhow::Error> {
match &*CUSTOM_NPM_PACKAGE_CACHE {
Ok(cache) => Ok(cache),
Err(err) => Err(anyhow::anyhow!("{}", err)),
}
}
struct CustomNpmPackage {
pub registry_file: String,
pub tarballs: HashMap<String, Vec<u8>>,
}
/// Creates tarballs and a registry json file for npm packages
/// in the `testdata/npm/registry/@denotest` directory.
pub struct CustomNpmPackageCache(HashMap<String, CustomNpmPackage>);
impl CustomNpmPackageCache {
pub fn load() -> Result<Self, anyhow::Error> {
use ring::digest::Context;
use ring::digest::SHA512;
// read all the packages in the @denotest folder
let custom_packages_path = testdata_path().join("npm/registry/@denotest");
let mut packages = HashMap::new();
for entry in fs::read_dir(&custom_packages_path)? {
let entry = entry?;
let file_type = entry.file_type()?;
if !file_type.is_dir() {
continue;
}
// read all the package's versions
let mut tarballs = HashMap::new();
let package_folder_name = entry.file_name().to_string_lossy().to_string();
let package_name = format!("@denotest/{}", package_folder_name);
let package_folder = custom_packages_path.join(&package_folder_name);
let mut versions = serde_json::Map::new();
for entry in fs::read_dir(&package_folder)? {
let entry = entry?;
let file_type = entry.file_type()?;
if !file_type.is_dir() {
continue;
}
let version = entry.file_name().to_string_lossy().to_string();
let version_folder = package_folder.join(&version);
// create the tarball
let mut tarball_bytes = Vec::new();
{
let mut encoder =
GzEncoder::new(&mut tarball_bytes, Compression::default());
{
let mut builder = Builder::new(&mut encoder);
builder
.append_dir_all("package", &version_folder)
.with_context(|| {
format!(
"Error adding tarball for directory: {}",
version_folder.display()
)
})?;
builder.finish()?;
}
encoder.finish()?;
}
// get tarball hash
let mut hash_ctx = Context::new(&SHA512);
hash_ctx.update(&tarball_bytes);
let digest = hash_ctx.finish();
let tarball_checksum = base64::encode(digest.as_ref()).to_lowercase();
// create the registry file JSON for this version
let mut dist = serde_json::Map::new();
dist.insert(
"integrity".to_string(),
format!("sha512-{}", tarball_checksum).into(),
);
dist.insert("shasum".to_string(), "dummy-value".into());
dist.insert(
"tarball".to_string(),
format!(
"http://localhost:4545/npm/registry/{}/{}.tgz",
package_name, version
)
.into(),
);
tarballs.insert(version.clone(), tarball_bytes);
let package_json_path = version_folder.join("package.json");
let package_json_text = fs::read_to_string(&package_json_path)
.with_context(|| {
format!(
"Error reading package.json at {}",
package_json_path.display()
)
})?;
let mut version_info: serde_json::Map<String, serde_json::Value> =
serde_json::from_str(&package_json_text)?;
version_info.insert("dist".to_string(), dist.into());
versions.insert(version, version_info.into());
}
// create the registry file for this package
let mut registry_file = serde_json::Map::new();
registry_file.insert("name".to_string(), package_name.clone().into());
registry_file.insert("versions".to_string(), versions.into());
packages.insert(
package_name,
CustomNpmPackage {
registry_file: serde_json::to_string(®istry_file).unwrap(),
tarballs,
},
);
}
Ok(Self(packages))
}
pub fn tarball_bytes(&self, name: &str, version: &str) -> Option<&Vec<u8>> {
self.0.get(name).and_then(|p| p.tarballs.get(version))
}
pub fn registry_file(&self, name: &str) -> Option<&String> {
self.0.get(name).map(|p| &p.registry_file)
}
}
|
