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Add to the Solver the capability to check conflicts with revdeps

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This commit is contained in:
Ettore Di Giacinto
2020-05-02 17:05:26 +02:00
parent 3befbfa915
commit 7b6e4a2176
2 changed files with 124 additions and 0 deletions
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31
pkg/solver/solver.go
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@@ -31,6 +31,8 @@ type PackageSolver interface {
Uninstall(candidate pkg.Package, checkconflicts bool) (pkg.Packages, error)
ConflictsWithInstalled(p pkg.Package) (bool, error)
ConflictsWith(p pkg.Package, ls pkg.Packages) (bool, error)
Conflicts(pack pkg.Package, lsp pkg.Packages) (bool, error)
World() pkg.Packages
Upgrade(checkconflicts bool) (pkg.Packages, PackagesAssertions, error)
@@ -149,6 +151,35 @@ func (s *Solver) getList(db pkg.PackageDatabase, lsp pkg.Packages) (pkg.Packages
return ls, nil
}
// Conflicts acts like ConflictsWith, but uses package's reverse dependencies to
// determine if it conflicts with the given set
func (s *Solver) Conflicts(pack pkg.Package, lsp pkg.Packages) (bool, error) {
p, err := s.DefinitionDatabase.FindPackage(pack)
if err != nil {
p = pack
}
ls, err := s.getList(s.DefinitionDatabase, lsp)
if err != nil {
return false, errors.Wrap(err, "Package not found in definition db")
}
if s.noRulesWorld() {
return false, nil
}
temporarySet := pkg.NewInMemoryDatabase(false)
for _, p := range ls {
temporarySet.CreatePackage(p)
}
visited := make(map[string]interface{})
revdeps := p.ExpandedRevdeps(temporarySet, visited)
return len(revdeps) != 0, nil
}
// ConflictsWith return true if a package is part of the requirement set of a list of package
// return false otherwise (and thus it is NOT relevant to the given list)
func (s *Solver) ConflictsWith(pack pkg.Package, lsp pkg.Packages) (bool, error) {
p, err := s.DefinitionDatabase.FindPackage(pack)
if err != nil {