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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::collections::HashMap;
use std::path::PathBuf;
use std::sync::Arc;
use deno_core::anyhow::bail;
use deno_core::anyhow::Context;
use deno_core::error::AnyError;
use deno_core::futures::stream::FuturesOrdered;
use deno_core::futures::StreamExt;
use deno_core::parking_lot::Mutex;
use deno_npm::registry::NpmRegistryApi;
use deno_npm::resolution::SerializedNpmResolutionSnapshot;
use deno_npm::resolution::SerializedNpmResolutionSnapshotPackage;
use deno_npm::resolution::ValidSerializedNpmResolutionSnapshot;
use deno_npm::NpmPackageId;
use deno_npm::NpmResolutionPackageSystemInfo;
use deno_semver::npm::NpmPackageReq;
use crate::args::ConfigFile;
use crate::npm::CliNpmRegistryApi;
use crate::Flags;
use super::DenoSubcommand;
pub use deno_lockfile::Lockfile;
pub use deno_lockfile::LockfileError;
pub fn discover(
flags: &Flags,
maybe_config_file: Option<&ConfigFile>,
) -> Result<Option<Lockfile>, AnyError> {
if flags.no_lock
|| matches!(
flags.subcommand,
DenoSubcommand::Install(_) | DenoSubcommand::Uninstall(_)
)
{
return Ok(None);
}
let filename = match flags.lock {
Some(ref lock) => PathBuf::from(lock),
None => match maybe_config_file {
Some(config_file) => {
if config_file.specifier.scheme() == "file" {
match config_file.resolve_lockfile_path()? {
Some(path) => path,
None => return Ok(None),
}
} else {
return Ok(None);
}
}
None => return Ok(None),
},
};
let lockfile = Lockfile::new(filename, flags.lock_write)?;
Ok(Some(lockfile))
}
pub async fn snapshot_from_lockfile(
lockfile: Arc<Mutex<Lockfile>>,
api: &CliNpmRegistryApi,
) -> Result<ValidSerializedNpmResolutionSnapshot, AnyError> {
let (root_packages, mut packages) = {
let lockfile = lockfile.lock();
let mut root_packages =
HashMap::<NpmPackageReq, NpmPackageId>::with_capacity(
lockfile.content.npm.specifiers.len(),
);
// collect the specifiers to version mappings
for (key, value) in &lockfile.content.npm.specifiers {
let package_req = NpmPackageReq::from_str(key)
.with_context(|| format!("Unable to parse npm specifier: {key}"))?;
let package_id = NpmPackageId::from_serialized(value)?;
root_packages.insert(package_req, package_id.clone());
}
// now fill the packages except for the dist information
let mut packages = Vec::with_capacity(lockfile.content.npm.packages.len());
for (key, package) in &lockfile.content.npm.packages {
let id = NpmPackageId::from_serialized(key)?;
// collect the dependencies
let mut dependencies = HashMap::with_capacity(package.dependencies.len());
for (name, specifier) in &package.dependencies {
let dep_id = NpmPackageId::from_serialized(specifier)?;
dependencies.insert(name.clone(), dep_id);
}
packages.push(SerializedNpmResolutionSnapshotPackage {
id,
dependencies,
// temporarily empty
system: Default::default(),
dist: Default::default(),
optional_dependencies: Default::default(),
});
}
(root_packages, packages)
};
// now that the lockfile is dropped, fetch the package version information
let pkg_nvs = packages.iter().map(|p| p.id.nv.clone()).collect::<Vec<_>>();
let get_version_infos = || {
FuturesOrdered::from_iter(pkg_nvs.iter().map(|nv| async move {
let package_info = api.package_info(&nv.name).await?;
match package_info.version_info(nv) {
Ok(version_info) => Ok(version_info),
Err(err) => {
bail!("Could not find '{}' specified in the lockfile.", err.0);
}
}
}))
};
let mut version_infos = get_version_infos();
let mut i = 0;
while let Some(result) = version_infos.next().await {
match result {
Ok(version_info) => {
let package = &mut packages[i];
package.dist = version_info.dist;
package.system = NpmResolutionPackageSystemInfo {
cpu: version_info.cpu,
os: version_info.os,
};
package.optional_dependencies =
version_info.optional_dependencies.into_keys().collect();
}
Err(err) => {
if api.mark_force_reload() {
// reset and try again
version_infos = get_version_infos();
i = 0;
continue;
} else {
return Err(err);
}
}
}
i += 1;
}
// clear the memory cache to reduce memory usage
api.clear_memory_cache();
SerializedNpmResolutionSnapshot {
packages,
root_packages,
}
.into_valid()
.context("The lockfile is corrupt. You can recreate it with --lock-write")
}
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