support kustomize components

pkg/appdir/walk_kustomize_files.go

@@ -40,6 +40,7 @@ func walkKustomizeFiles(result *AppDirectory, fs fs.FS, appName, dirpath string)
 
 		kustomize struct {
 			Bases                 []string        `yaml:"bases"`
+			Components            []string        `yaml:"components"`
 			Resources             []string        `yaml:"resources"`
 			PatchesJson6902       []patchJson6902 `yaml:"patchesJson6902"`
 			PatchesStrategicMerge []string        `yaml:"patchesStrategicMerge"`
@@ -66,7 +67,7 @@ func walkKustomizeFiles(result *AppDirectory, fs fs.FS, appName, dirpath string)
 
 	for _, resource := range kustomize.Resources {
 		if isGoGetterIsh(resource) {
-			// no reason to walk remote files, since they can't be changed
+			// no reason to walk remote files, since they can't be changed in this PR
 			continue
 		}
 
@@ -110,6 +111,17 @@ func walkKustomizeFiles(result *AppDirectory, fs fs.FS, appName, dirpath string)
 		}
 	}
 
+	for _, componentPath := range kustomize.Components {
+		if isGoGetterIsh(componentPath) {
+			continue
+		}
+		relPath := filepath.Join(dirpath, componentPath)
+		result.addDir(appName, relPath)
+		if err = walkKustomizeFiles(result, fs, appName, relPath); err != nil {
+			log.Warn().Err(err).Msgf("failed to read kustomize.yaml from components in %s", relPath)
+		}
+	}
+
 	for _, patchFile := range kustomize.PatchesStrategicMerge {
 		relPath := filepath.Join(dirpath, patchFile)
 		result.addFile(appName, relPath)

pkg/appdir/walk_kustomize_files_test.go

@@ -55,6 +55,10 @@ resources:
 - file1.yaml
 - ../overlays/base
 - /common/overlays/prod
+
+components:
+- ../components/one/
+- ../components/two/
 `)},
 			"test/overlays/base/kustomization.yaml": {
 				Data: toBytes(`
@@ -73,6 +77,8 @@ resources:
 			"common/overlays/prod/kustomization.yaml":  {Data: toBytes("hello: world")},
 			"test/overlays/base/some-file1.yaml":       {Data: toBytes("hello: world")},
 			"test/overlays/base/some-file2.yaml":       {Data: toBytes("hello: world")},
+			"test/components/one/kustomization.yaml":   {Data: toBytes("hello: world")},
+			"test/components/two/kustomization.yaml":   {Data: toBytes("hello: world")},
 		}
 	)
 
@@ -135,6 +141,12 @@ resources:
 			kustomizeApp1Name,
 			kustomizeApp2Name,
 		},
+		"test/components/one": {
+			kustomizeApp2Name,
+		},
+		"test/components/two": {
+			kustomizeApp2Name,
+		},
 	}, appdir.appDirs)
 
 	assert.Equal(t, map[string][]string{