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|
//! `DownloadManager` — pick the right [`VcsDownloader`] for a given
//! [`LocalPackage`]. Mirrors `Composer\Downloader\DownloadManager`.
use std::path::PathBuf;
use mozart_core::composer::{InstallationSource, LocalPackage};
use mozart_vcs::downloader::VcsDownloader;
use mozart_vcs::downloader::git::GitDownloader;
use mozart_vcs::downloader::hg::HgDownloader;
use mozart_vcs::downloader::svn::SvnDownloader;
use mozart_vcs::process::ProcessExecutor;
use mozart_vcs::util::git::GitUtil;
use mozart_vcs::util::hg::HgUtil;
use mozart_vcs::util::svn::SvnUtil;
/// Selects a `VcsDownloader` for a package based on its installation source
/// and source type. Mirrors `DownloadManager::getDownloaderForPackage`:
///
/// - `metapackage` → `None`.
/// - `installation-source: dist` → `None` (Composer would return a
/// `FileDownloader`-family object that does not implement
/// `ChangeReportInterface` / `DvcsDownloaderInterface`, so the status
/// command's `instanceof` checks all become no-ops; returning `None`
/// directly is the equivalent in our trait-object world).
/// - `installation-source: source` → the matching VCS downloader by
/// `source.type` (`git` / `hg` / `svn`).
pub struct DownloadManager {
git_cache_dir: PathBuf,
}
impl DownloadManager {
/// `git_cache_dir`: where `GitUtil` should keep mirror clones (e.g.
/// `<vendor>/.cache/git`).
pub fn new(git_cache_dir: PathBuf) -> Self {
Self { git_cache_dir }
}
pub fn for_package(&self, package: &LocalPackage) -> Option<Box<dyn VcsDownloader>> {
if package.package_type() == Some("metapackage") {
return None;
}
match package.installation_source()? {
InstallationSource::Dist => None,
InstallationSource::Source => {
let kind = package.source()?.kind.as_str();
match kind {
"git" => {
let git_util =
GitUtil::new(ProcessExecutor::new(), self.git_cache_dir.clone());
Some(Box::new(GitDownloader::new(git_util)))
}
"hg" => {
let hg_util = HgUtil::new(ProcessExecutor::new());
Some(Box::new(HgDownloader::new(hg_util)))
}
"svn" => {
let svn_util = SvnUtil::new(ProcessExecutor::new());
Some(Box::new(SvnDownloader::new(svn_util)))
}
_ => None,
}
}
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use mozart_core::composer::PackageReference;
use serde_json::Value;
fn pkg(
installation_source: Option<InstallationSource>,
source_kind: Option<&str>,
) -> LocalPackage {
let source = source_kind.map(|kind| PackageReference {
kind: kind.to_string(),
url: "https://example/repo".into(),
reference: Some("abc123".into()),
shasum: None,
});
LocalPackage::new(
"vendor/pkg".into(),
"1.0.0".into(),
None,
Some("library".into()),
installation_source,
source,
None,
Value::Null,
)
}
#[test]
fn metapackage_returns_none() {
let dm = DownloadManager::new(PathBuf::from("/tmp/mz-test-cache"));
let mut p = pkg(Some(InstallationSource::Source), Some("git"));
// override type
p = LocalPackage::new(
"vendor/pkg".into(),
"1.0.0".into(),
None,
Some("metapackage".into()),
p.installation_source(),
p.source().cloned(),
None,
Value::Null,
);
assert!(dm.for_package(&p).is_none());
}
#[test]
fn dist_install_returns_none() {
let dm = DownloadManager::new(PathBuf::from("/tmp/mz-test-cache"));
let p = pkg(Some(InstallationSource::Dist), Some("git"));
assert!(dm.for_package(&p).is_none());
}
#[test]
fn source_install_with_git_returns_some() {
let dm = DownloadManager::new(PathBuf::from("/tmp/mz-test-cache"));
let p = pkg(Some(InstallationSource::Source), Some("git"));
assert!(dm.for_package(&p).is_some());
}
#[test]
fn unknown_source_kind_returns_none() {
let dm = DownloadManager::new(PathBuf::from("/tmp/mz-test-cache"));
let p = pkg(Some(InstallationSource::Source), Some("perforce"));
assert!(dm.for_package(&p).is_none());
}
#[test]
fn missing_installation_source_returns_none() {
let dm = DownloadManager::new(PathBuf::from("/tmp/mz-test-cache"));
let p = pkg(None, Some("git"));
assert!(dm.for_package(&p).is_none());
}
}
|
