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Refactor -> move simple resolver to separate mod
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,176 @@ | ||
| use crate::core::lockfile::Lockfile; | ||
| use crate::core::registry::Registry; | ||
| use crate::core::resolver::DependencyEdge; | ||
| use crate::core::{ | ||
| DepKind, DependencyFilter, DependencyVersionReq, ManifestDependency, PackageId, Resolve, | ||
| Summary, TargetKind, | ||
| }; | ||
| use anyhow::bail; | ||
| use indoc::{formatdoc, indoc}; | ||
| use petgraph::graphmap::DiGraphMap; | ||
| use std::collections::{HashMap, HashSet}; | ||
|
|
||
| #[tracing::instrument(level = "trace", skip_all)] | ||
| pub async fn resolve( | ||
| summaries: &[Summary], | ||
| registry: &dyn Registry, | ||
| lockfile: Lockfile, | ||
| ) -> anyhow::Result<Resolve> { | ||
| // TODO(#2): This is very bad, use PubGrub here. | ||
| let mut graph = DiGraphMap::<PackageId, DependencyEdge>::new(); | ||
|
|
||
| let main_packages = summaries | ||
| .iter() | ||
| .map(|sum| sum.package_id) | ||
| .collect::<HashSet<PackageId>>(); | ||
| let mut packages: HashMap<_, _> = HashMap::from_iter( | ||
| summaries | ||
| .iter() | ||
| .map(|s| (s.package_id.name.clone(), s.package_id)), | ||
| ); | ||
|
|
||
| let mut summaries: HashMap<_, _> = summaries | ||
| .iter() | ||
| .map(|s| (s.package_id, s.clone())) | ||
| .collect(); | ||
|
|
||
| let mut queue: Vec<PackageId> = summaries.keys().copied().collect(); | ||
| while !queue.is_empty() { | ||
| let mut next_queue = Vec::new(); | ||
|
|
||
| for package_id in queue { | ||
| graph.add_node(package_id); | ||
|
|
||
| let summary = summaries[&package_id].clone(); | ||
| let dep_filter = | ||
| DependencyFilter::propagation(main_packages.contains(&summary.package_id)); | ||
| for dep in summary.filtered_full_dependencies(dep_filter) { | ||
| let dep = rewrite_dependency_source_id(registry, &package_id, dep).await?; | ||
|
|
||
| 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 | ||
| }; | ||
|
|
||
| let results = registry.query(&dep).await?; | ||
|
|
||
| let Some(dep_summary) = results.first() else { | ||
| bail!("cannot find package {}", dep.name) | ||
| }; | ||
|
|
||
| let dep_target_kind: Option<TargetKind> = match dep.kind.clone() { | ||
| DepKind::Normal => None, | ||
| DepKind::Target(target_kind) => Some(target_kind), | ||
| }; | ||
| let dep = dep_summary.package_id; | ||
|
|
||
| if let Some(existing) = packages.get(dep.name.as_ref()) { | ||
| if existing.source_id != dep.source_id { | ||
| bail!( | ||
| indoc! {" | ||
| found dependencies on the same package `{}` coming from incompatible \ | ||
| sources: | ||
| source 1: {} | ||
| source 2: {} | ||
| "}, | ||
| dep.name, | ||
| existing.source_id, | ||
| dep.source_id | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| let weight = graph | ||
| .edge_weight(package_id, dep) | ||
| .cloned() | ||
| .unwrap_or_default(); | ||
| let weight = weight.extend(dep_target_kind); | ||
| graph.add_edge(package_id, dep, weight); | ||
| summaries.insert(dep, dep_summary.clone()); | ||
|
|
||
| if packages.contains_key(dep.name.as_ref()) { | ||
| continue; | ||
| } | ||
|
|
||
| packages.insert(dep.name.clone(), dep); | ||
| next_queue.push(dep); | ||
| } | ||
| } | ||
|
|
||
| queue = next_queue; | ||
| } | ||
|
|
||
| // Detect incompatibilities and bail in case ones are found. | ||
| let mut incompatibilities = Vec::new(); | ||
| for from_package in graph.nodes() { | ||
| let dep_filter = DependencyFilter::propagation(main_packages.contains(&from_package)); | ||
| for manifest_dependency in summaries[&from_package].filtered_full_dependencies(dep_filter) { | ||
| let to_package = packages[&manifest_dependency.name]; | ||
| if !manifest_dependency.matches_package_id(to_package) { | ||
| let message = format!( | ||
| "- {from_package} cannot use {to_package}, because {} requires {} {}", | ||
| from_package.name, to_package.name, manifest_dependency.version_req | ||
| ); | ||
| incompatibilities.push(message); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if !incompatibilities.is_empty() { | ||
| incompatibilities.sort(); | ||
| let incompatibilities = incompatibilities.join("\n"); | ||
| bail!(formatdoc! {" | ||
| Version solving failed: | ||
| {incompatibilities} | ||
| Scarb does not have real version solving algorithm yet. | ||
| Perhaps in the future this conflict could be resolved, but currently, | ||
| please upgrade your dependencies to use latest versions of their dependencies. | ||
| "}); | ||
| } | ||
|
|
||
| let resolve = Resolve { graph, summaries }; | ||
| resolve.check_checksums(&lockfile)?; | ||
| Ok(resolve) | ||
| } | ||
|
|
||
| fn rewrite_locked_dependency( | ||
| dependency: ManifestDependency, | ||
| locked_package_id: PackageId, | ||
| ) -> ManifestDependency { | ||
| ManifestDependency::builder() | ||
| .kind(dependency.kind.clone()) | ||
| .name(dependency.name.clone()) | ||
| .source_id(locked_package_id.source_id) | ||
| .version_req(DependencyVersionReq::Locked { | ||
| exact: locked_package_id.version.clone(), | ||
| req: dependency.version_req.clone().into(), | ||
| }) | ||
| .build() | ||
| } | ||
|
|
||
| async fn rewrite_dependency_source_id( | ||
| registry: &dyn Registry, | ||
| package_id: &PackageId, | ||
| dependency: &ManifestDependency, | ||
| ) -> anyhow::Result<ManifestDependency> { | ||
| // Rewrite path dependencies for git sources. | ||
| if package_id.source_id.is_git() && dependency.source_id.is_path() { | ||
| let rewritten_dep = ManifestDependency::builder() | ||
| .kind(dependency.kind.clone()) | ||
| .name(dependency.name.clone()) | ||
| .source_id(package_id.source_id) | ||
| .version_req(dependency.version_req.clone()) | ||
| .build(); | ||
| // Check if this dependency can be queried from git source. | ||
| // E.g. packages below other package's manifest will not be accessible. | ||
| if !registry.query(&rewritten_dep).await?.is_empty() { | ||
| // If it is, return rewritten dependency. | ||
| return Ok(rewritten_dep); | ||
| } | ||
| }; | ||
|
|
||
| Ok(dependency.clone()) | ||
| } |