fix(downloader): distinguish aliased dependency repositories

Signed-off-by: Karthik Chowdary <21139050+Karthik-Chowdary@users.noreply.github.com>

internal/resolver/resolver.go

@@ -106,7 +106,7 @@ func (r *Resolver) Resolve(reqs []*chart.Dependency, repoNames map[string]string
 			continue
 		}
 
-		repoName := repoNames[d.Name]
+		repoName := repoNames[dependencyKey(d)]
 		// if the repository was not defined, but the dependency defines a repository url, bypass the cache
 		if repoName == "" && d.Repository != "" {
 			locked[i] = &chart.Dependency{
@@ -206,6 +206,13 @@ func (r *Resolver) Resolve(reqs []*chart.Dependency, repoNames map[string]string
 	}, nil
 }
 
+func dependencyKey(dep *chart.Dependency) string {
+	if dep.Alias != "" {
+		return dep.Alias
+	}
+	return dep.Name
+}
+
 // HashReq generates a hash of the dependencies.
 //
 // This should be used only to compare against another hash generated by this

pkg/downloader/manager.go

@@ -511,7 +511,7 @@ func (m *Manager) ensureMissingRepos(repoNames map[string]string, deps []*chart.
 		}
 
 		// When the repoName for a dependency is known we can skip ensuring
-		if _, ok := repoNames[dd.Name]; ok {
+		if _, ok := repoNames[dependencyKey(dd)]; ok {
 			continue
 		}
 
@@ -527,7 +527,7 @@ func (m *Manager) ensureMissingRepos(repoNames map[string]string, deps []*chart.
 		}
 		rn = managerKeyPrefix + rn
 
-		repoNames[dd.Name] = rn
+		repoNames[dependencyKey(dd)] = rn
 
 		// Assuming the repository is generally available. For Helm managed
 		// access controls the repository needs to be added through the user
@@ -555,6 +555,13 @@ func (m *Manager) ensureMissingRepos(repoNames map[string]string, deps []*chart.
 	return repoNames, nil
 }
 
+func dependencyKey(dep *chart.Dependency) string {
+	if dep.Alias != "" {
+		return dep.Alias
+	}
+	return dep.Name
+}
+
 // resolveRepoNames returns the repo names of the referenced deps which can be used to fetch the cached index file
 // and replaces aliased repository URLs into resolved URLs in dependencies.
 func (m *Manager) resolveRepoNames(deps []*chart.Dependency) (map[string]string, error) {
@@ -586,12 +593,12 @@ func (m *Manager) resolveRepoNames(deps []*chart.Dependency) (map[string]string,
 			if m.Debug {
 				fmt.Fprintf(m.Out, "Repository from local path: %s\n", dd.Repository)
 			}
-			reposMap[dd.Name] = dd.Repository
+			reposMap[dependencyKey(dd)] = dd.Repository
 			continue
 		}
 
 		if registry.IsOCI(dd.Repository) {
-			reposMap[dd.Name] = dd.Repository
+			reposMap[dependencyKey(dd)] = dd.Repository
 			continue
 		}
 
@@ -602,11 +609,11 @@ func (m *Manager) resolveRepoNames(deps []*chart.Dependency) (map[string]string,
 				(strings.HasPrefix(dd.Repository, "alias:") && strings.TrimPrefix(dd.Repository, "alias:") == repo.Name) {
 				found = true
 				dd.Repository = repo.URL
-				reposMap[dd.Name] = repo.Name
+				reposMap[dependencyKey(dd)] = repo.Name
 				break
 			} else if urlutil.Equal(repo.URL, dd.Repository) {
 				found = true
-				reposMap[dd.Name] = repo.Name
+				reposMap[dependencyKey(dd)] = repo.Name
 				break
 			}
 		}

pkg/downloader/manager_test.go

@@ -180,6 +180,52 @@ func TestGetRepoNames(t *testing.T) {
 	}
 }
 
+func TestResolveAliasedChartFromMixedRepositories(t *testing.T) {
+	srv := repotest.NewTempServer(
+		t,
+		repotest.WithChartSourceGlob("testdata/local-subchart-0.1.0.tgz"),
+	)
+	defer srv.Stop()
+	require.NoError(t, srv.LinkIndices())
+
+	dir := t.TempDir()
+	repositoryConfig := filepath.Join(dir, "repositories.yaml")
+	require.NoError(t, os.WriteFile(repositoryConfig, []byte("apiVersion: v1\nrepositories: []\n"), 0o644))
+
+	deps := []*chart.Dependency{
+		{
+			Name:       "local-subchart",
+			Alias:      "cluster-new",
+			Version:    "0.1.0",
+			Repository: "oci://registry.example.com/charts",
+		},
+		{
+			Name:       "local-subchart",
+			Alias:      "cluster-old",
+			Version:    "0.1.0",
+			Repository: srv.URL(),
+		},
+	}
+	m := &Manager{
+		Out:              new(bytes.Buffer),
+		ChartPath:        dir,
+		Getters:          getter.Getters(),
+		RepositoryConfig: repositoryConfig,
+		RepositoryCache:  dir,
+	}
+
+	repoNames, err := m.resolveRepoNames(deps)
+	require.NoError(t, err)
+	repoNames, err = m.ensureMissingRepos(repoNames, deps)
+	require.NoError(t, err)
+
+	lock, err := m.resolve(deps, repoNames)
+	require.NoError(t, err)
+	require.Len(t, lock.Dependencies, 2)
+	assert.Equal(t, deps[0].Repository, lock.Dependencies[0].Repository)
+	assert.Equal(t, deps[1].Repository, lock.Dependencies[1].Repository)
+}
+
 func TestDownloadAll(t *testing.T) {
 	chartPath := t.TempDir()
 	m := &Manager{