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Original file line number | Diff line number | Diff line change |
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use crate::core::{ManifestDependency, Summary}; | ||
use once_map::OnceMap; | ||
use std::sync::Arc; | ||
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/// In-memory index of package metadata. | ||
#[derive(Default, Clone)] | ||
pub struct InMemoryIndex(Arc<SharedInMemoryIndex>); | ||
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#[derive(Default)] | ||
struct SharedInMemoryIndex { | ||
/// A map from package name to the metadata for that package and the index where the metadata | ||
/// came from. | ||
packages: FxOnceMap<ManifestDependency, Arc<VersionsResponse>>, | ||
} | ||
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pub(crate) type FxOnceMap<K, V> = OnceMap<K, V>; | ||
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impl InMemoryIndex { | ||
/// Returns a reference to the package metadata. | ||
pub fn packages(&self) -> &FxOnceMap<ManifestDependency, Arc<VersionsResponse>> { | ||
&self.0.packages | ||
} | ||
} | ||
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#[derive(Debug)] | ||
pub enum VersionsResponse { | ||
Found(Vec<Summary>), | ||
} |
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Original file line number | Diff line number | Diff line change |
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@@ -1,12 +1,153 @@ | ||
use crate::core::lockfile::Lockfile; | ||
use crate::core::registry::Registry; | ||
use crate::core::{Resolve, Summary}; | ||
use crate::core::{PackageId, Resolve, Summary}; | ||
use crate::resolver::algorithm::provider::{ | ||
rewrite_locked_dependency, DependencyProviderError, PubGrubDependencyProvider, PubGrubPackage, | ||
}; | ||
use crate::resolver::algorithm::solution::{build_resolve, validate_solution}; | ||
use crate::resolver::algorithm::state::{Request, ResolverState}; | ||
use anyhow::bail; | ||
use futures::{FutureExt, TryFutureExt}; | ||
use itertools::Itertools; | ||
use pubgrub::PubGrubError; | ||
use pubgrub::{DefaultStringReporter, Reporter}; | ||
use pubgrub::{Incompatibility, State}; | ||
use std::collections::HashSet; | ||
use std::sync::Arc; | ||
use std::thread; | ||
use tokio::sync::{mpsc, oneshot}; | ||
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#[tracing::instrument(level = "trace", skip_all)] | ||
pub async fn resolve( | ||
_summaries: &[Summary], | ||
_registry: &dyn Registry, | ||
_lockfile: Lockfile, | ||
mod in_memory_index; | ||
mod provider; | ||
mod solution; | ||
mod state; | ||
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pub async fn resolve<'c>( | ||
summaries: &[Summary], | ||
registry: &dyn Registry, | ||
lockfile: Lockfile, | ||
) -> anyhow::Result<Resolve> { | ||
todo!("implement") | ||
let state = Arc::new(ResolverState::default()); | ||
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let (request_sink, request_stream): (mpsc::Sender<Request>, mpsc::Receiver<Request>) = | ||
mpsc::channel(300); | ||
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let requests_fut = state | ||
.clone() | ||
.fetch(registry, request_stream) | ||
.map_err(|err| anyhow::format_err!(err)) | ||
.fuse(); | ||
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for summary in summaries { | ||
for dep in summary.full_dependencies() { | ||
let locked_package_id = lockfile.packages_matching(dep.clone()); | ||
let dep = if let Some(locked_package_id) = locked_package_id { | ||
rewrite_locked_dependency(dep.clone(), locked_package_id?) | ||
} else { | ||
dep.clone() | ||
}; | ||
if state.index.packages().register(dep.clone()) { | ||
request_sink.send(Request::Package(dep.clone())).await?; | ||
} | ||
} | ||
} | ||
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let main_package_ids: HashSet<PackageId> = | ||
HashSet::from_iter(summaries.iter().map(|sum| sum.package_id)); | ||
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let (tx, rx) = oneshot::channel(); | ||
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let cloned_lockfile = lockfile.clone(); | ||
thread::Builder::new() | ||
.name("scarb-resolver".into()) | ||
.spawn(move || { | ||
let result = || { | ||
let provider = PubGrubDependencyProvider::new( | ||
main_package_ids, | ||
state, | ||
request_sink, | ||
cloned_lockfile, | ||
); | ||
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// Init state | ||
let main_package_ids = provider | ||
.main_package_ids() | ||
.clone() | ||
.into_iter() | ||
.collect_vec(); | ||
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let Some((first, rest)) = main_package_ids.split_first() else { | ||
bail!("empty summaries"); | ||
}; | ||
let package: PubGrubPackage = (*first).into(); | ||
let version = first.version.clone(); | ||
let mut state = State::init(package.clone(), version); | ||
state | ||
.unit_propagation(package.clone()) | ||
.map_err(|err| anyhow::format_err!("unit propagation failed: {:?}", err))?; | ||
for package_id in rest { | ||
let package: PubGrubPackage = (*package_id).into(); | ||
let version = package_id.version.clone(); | ||
state.add_incompatibility(Incompatibility::not_root( | ||
package.clone(), | ||
version.clone(), | ||
)); | ||
state | ||
.unit_propagation(package) | ||
.map_err(|err| anyhow::format_err!("unit propagation failed: {:?}", err))? | ||
} | ||
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// Resolve requirements | ||
let solution = | ||
pubgrub::resolve_state(&provider, &mut state, package).map_err(format_error)?; | ||
|
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validate_solution(&solution)?; | ||
build_resolve(&provider, solution) | ||
}; | ||
let result = result(); | ||
tx.send(result).unwrap(); | ||
})?; | ||
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let resolve_fut = async move { | ||
rx.await | ||
.map_err(|_| DependencyProviderError::ChannelClosed.into()) | ||
.and_then(|result| result) | ||
}; | ||
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let (_, resolve) = tokio::try_join!(requests_fut, resolve_fut)?; | ||
resolve.check_checksums(&lockfile)?; | ||
Ok(resolve) | ||
} | ||
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fn format_error(err: PubGrubError<PubGrubDependencyProvider>) -> anyhow::Error { | ||
match err { | ||
PubGrubError::NoSolution(derivation_tree) => { | ||
anyhow::format_err!( | ||
"version solving failed:\n{}\n", | ||
DefaultStringReporter::report(&derivation_tree) | ||
) | ||
} | ||
PubGrubError::ErrorChoosingPackageVersion(DependencyProviderError::PackageNotFound { | ||
name, | ||
version, | ||
}) => { | ||
anyhow::format_err!("cannot find package `{name} {version}`") | ||
} | ||
PubGrubError::ErrorChoosingPackageVersion(DependencyProviderError::PackageQueryFailed( | ||
err, | ||
)) => anyhow::format_err!("{}", err).context("dependency query failed"), | ||
PubGrubError::ErrorRetrievingDependencies { | ||
package, | ||
version, | ||
source, | ||
} => anyhow::Error::from(source) | ||
.context(format!("cannot get dependencies of `{package}@{version}`")), | ||
PubGrubError::ErrorInShouldCancel(err) => { | ||
anyhow::format_err!("{}", err).context("should cancel failed") | ||
} | ||
PubGrubError::Failure(msg) => anyhow::format_err!("{}", msg).context("resolver failure"), | ||
PubGrubError::ErrorChoosingPackageVersion(DependencyProviderError::ChannelClosed) => { | ||
anyhow::format_err!("channel closed") | ||
} | ||
} | ||
} |
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