Merge pull request #796 from bryanl/remove-component

Remove component in module with

pkg/component/component.go

@@ -57,6 +57,8 @@ type Component interface {
 	// Params returns a list of all parameters for a component. If envName is a
 	// blank string, it will report the local parameters.
 	Params(envName string) ([]ModuleParameter, error)
+	// Remove removes the component
+	Remove() error
 	// SetParams sets a component paramaters.
 	SetParam(path []string, value interface{}) error
 	// Summarize returns a summary of the component.
@@ -87,7 +89,7 @@ func LocateComponent(ksApp app.App, module, name string) (Component, error) {
 
 // Path returns returns the file system path for a component.
 func Path(a app.App, name string) (string, error) {
-	ns, localName := ExtractModuleComponent(a, name)
+	ns, localName := extractModuleComponent(a, name)
 
 	fis, err := afero.ReadDir(a.Fs(), ns.Dir())
 	if err != nil {
@@ -122,7 +124,7 @@ func Path(a app.App, name string) (string, error) {
 
 // ExtractComponent extracts a component from a path.
 func ExtractComponent(a app.App, path string) (Component, error) {
-	ns, componentName := ExtractModuleComponent(a, path)
+	ns, componentName := extractModuleComponent(a, path)
 	members, err := ns.Components()
 	if err != nil {
 		return nil, err

pkg/component/delete.go

@@ -31,19 +31,35 @@ import (
 // the directory structure in a half-finished state.
 func Delete(a app.App, name string) error {
 	log.Debugf("deleting component %s", name)
-	componentPath, err := Path(a, name)
+
+	moduleName, componentName, err := extractPathParts(a, name)
 	if err != nil {
 		return err
 	}
 
-	ns, _ := ExtractModuleComponent(a, name)
+	m := NewModule(a, moduleName)
+
+	var c Component
+	components, err := m.Components()
+	if err != nil {
+		return err
+	}
+	for i := range components {
+		if components[i].Name(false) == componentName {
+			c = components[i]
+		}
+	}
+
+	if c == nil {
+		return errors.Errorf("unable to find component %q", name)
+	}
 
-	// Build the new component/params.libsonnet file.
-	componentParamsFile, err := afero.ReadFile(a.Fs(), ns.ParamsPath())
+	// Build the new component params.libsonnet file.
+	componentParamsFile, err := afero.ReadFile(a.Fs(), m.ParamsPath())
 	if err != nil {
 		return err
 	}
-	componentJsonnet, err := param.DeleteComponent(name, string(componentParamsFile))
+	componentJsonnet, err := param.DeleteComponent(c.Name(false), string(componentParamsFile))
 	if err != nil {
 		return err
 	}
@@ -71,8 +87,8 @@ func Delete(a app.App, name string) error {
 	log.Infof("Removing component parameter references ...")
 
 	// Remove the references in component/params.libsonnet.
-	log.Debugf("... deleting references in %s", ns.ParamsPath())
-	err = afero.WriteFile(a.Fs(), ns.ParamsPath(), []byte(componentJsonnet), defaultFilePermissions)
+	log.Debugf("... deleting references in %s", m.ParamsPath())
+	err = afero.WriteFile(a.Fs(), m.ParamsPath(), []byte(componentJsonnet), defaultFilePermissions)
 	if err != nil {
 		return err
 	}
@@ -84,8 +100,8 @@ func Delete(a app.App, name string) error {
 	//
 	// Delete the component file in components/.
 	//
-	log.Infof("Deleting component '%s' at path '%s'", name, componentPath)
-	if err := a.Fs().Remove(componentPath); err != nil {
+	log.Infof("Deleting component %q", name)
+	if err := c.Remove(); err != nil {
 		return err
 	}
 
@@ -110,8 +126,8 @@ func collectEnvParams(a app.App, env *app.EnvironmentConfig, componentName, envN
 	return ecr.Remove(componentName, string(envParamsFile))
 }
 
-/// updateEnvParam removes the component references in each environment's
-// paramss.libsonnet.
+// updateEnvParam removes the component references in each environment's
+// params.libsonnet.
 func updateEnvParam(a app.App, envs app.EnvironmentConfigs, envParams map[string]string) error {
 	for envName := range envs {
 		path := filepath.Join(a.Root(), "environments", envName, "params.libsonnet")

pkg/component/delete_test.go

@@ -53,3 +53,33 @@ func TestDelete(t *testing.T) {
 		)
 	})
 }
+
+func TestDeleteWithModule(t *testing.T) {
+	test.WithApp(t, "/app", func(a *mocks.App, fs afero.Fs) {
+		test.StageDir(t, fs, "delete", "/app")
+
+		envs := app.EnvironmentConfigs{
+			"default": &app.EnvironmentConfig{},
+		}
+		a.On("Environments").Return(envs, nil)
+
+		err := Delete(a, "nested.guestbook-ui")
+		require.NoError(t, err)
+
+		base := filepath.Join("/app", "components", "nested")
+
+		test.AssertNotExists(t, fs, filepath.Join(base, "guestbook-ui.jsonnet"))
+		test.AssertContents(
+			t,
+			fs,
+			"delete-params.libsonnet",
+			filepath.Join(base, "params.libsonnet"),
+		)
+		test.AssertContents(
+			t,
+			fs,
+			"delete-env-params-nested.libsonnet",
+			filepath.Join("/app", "environments", "default", "params.libsonnet"),
+		)
+	})
+}

pkg/component/jsonnet.go

@@ -79,6 +79,17 @@ func (j *Jsonnet) Type() string {
 	return TypeJsonnet
 }
 
+// Remove removes the component.
+func (j *Jsonnet) Remove() error {
+	m := NewModule(j.app, j.module)
+	path := filepath.Join(m.Dir(), j.Name(false)+"."+j.Type())
+	if err := j.app.Fs().Remove(path); err != nil {
+		return errors.Wrapf(err, "removing %q", path)
+	}
+
+	return nil
+}
+
 // SetParam set parameter for a component.
 func (j *Jsonnet) SetParam(path []string, value interface{}) error {
 	paramsData, err := j.readModuleParams()

pkg/component/manager.go

@@ -119,7 +119,7 @@ func extractPathParts(ksApp app.App, path string) (string, string, error) {
 	}
 
 	path = strings.Replace(path, ".", string(filepath.Separator), -1)
-	module, componentName := ExtractModuleComponent(ksApp, path)
+	module, componentName := extractModuleComponent(ksApp, path)
 	base := filepath.Join(module.Dir(), componentName)
 
 	exts := []string{".yaml", ".jsonnet", ".json"}

pkg/component/module.go

@@ -83,8 +83,8 @@ func NewModule(ksApp app.App, path string) *FilesystemModule {
 	return &FilesystemModule{app: ksApp, path: path}
 }
 
-// ExtractModuleComponent extracts a module and a component from a filesystem path.
-func ExtractModuleComponent(a app.App, path string) (Module, string) {
+// extractModuleComponent extracts a module and a component from a filesystem path.
+func extractModuleComponent(a app.App, path string) (Module, string) {
 	dir, file := filepath.Split(path)
 	componentName := strings.TrimSuffix(file, filepath.Ext(file))
 

pkg/component/module_test.go

@@ -169,7 +169,7 @@ func TestExtractModuleComponent(t *testing.T) {
 	for _, tc := range cases {
 		t.Run(tc.name, func(t *testing.T) {
 			test.WithApp(t, "/app", func(a *mocks.App, fs afero.Fs) {
-				m, c := ExtractModuleComponent(a, tc.in)
+				m, c := extractModuleComponent(a, tc.in)
 
 				assert.Equal(t, tc.m, m.Name())
 				assert.Equal(t, tc.c, c)

pkg/component/testdata/delete-env-params-nested.libsonnet

@@ -0,0 +1,9 @@
+local params = import '../../components/params.libsonnet';
+
+params {
+  components+: {
+    "guestbook-ui"+: {
+      name: 'guestbook-dev',
+    },
+  },
+}

pkg/component/testdata/delete-env-params.libsonnet

@@ -1,5 +1,9 @@
 local params = import '../../components/params.libsonnet';
 
 params {
-  components+: {},
+  components+: {
+    "nested.guestbook-ui"+: {
+      name: 'guestbook-dev',
+    },
+  },
 }

pkg/component/testdata/delete/components/nested/guestbook-ui.jsonnet

@@ -0,0 +1,29 @@
+local env = std.extVar("__ksonnet/environments");
+local params = std.extVar("__ksonnet/params").components["guestbook-ui"];
+local k = import "k.libsonnet";
+local deployment = k.apps.v1beta1.deployment;
+local container = k.apps.v1beta1.deployment.mixin.spec.template.spec.containersType;
+local containerPort = container.portsType;
+local service = k.core.v1.service;
+local servicePort = k.core.v1.service.mixin.spec.portsType;
+
+local targetPort = params.containerPort;
+local labels = {app: params.name};
+
+local appService = service
+  .new(
+    params.name,
+    labels,
+    servicePort.new(params.servicePort, targetPort))
+  .withType(params.type);
+
+local appDeployment = deployment
+  .new(
+    params.name,
+    params.replicas,
+    container
+      .new(params.name, params.image)
+      .withPorts(containerPort.new(targetPort)),
+    labels);
+
+k.core.v1.list.new([appService, appDeployment])

pkg/component/testdata/delete/components/nested/params.libsonnet

@@ -0,0 +1,19 @@
+{
+  global: {
+    // User-defined global parameters; accessible to all component and environments, Ex:
+    // replicas: 4,
+  },
+  components: {
+    // Component-level parameters, defined initially from 'ks prototype use ...'
+    // Each object below should correspond to a component in the components/ directory
+    "guestbook-ui": {
+      containerPort: 80,
+      image: "gcr.io/heptio-images/ks-guestbook-demo:0.1",
+      name: "guiroot",
+      replicas: 1,
+      servicePort: 80,
+      type: "ClusterIP",
+      obj: {a: "b"},
+    },
+  },
+}

pkg/component/testdata/delete/environments/default/params.libsonnet

@@ -4,5 +4,8 @@ params {
     "guestbook-ui" +: {
        name: "guestbook-dev",
     },
+    "nested.guestbook-ui" +: {
+       name: "guestbook-dev",
+    },
   },
 }

pkg/component/yaml.go

@@ -80,6 +80,17 @@ func (y *YAML) Type() string {
 	return TypeYAML
 }
 
+// Remove removes the component.
+func (y *YAML) Remove() error {
+	m := NewModule(y.app, y.module)
+	path := filepath.Join(m.Dir(), y.Name(false)+"."+y.Type())
+	if err := y.app.Fs().Remove(path); err != nil {
+		return errors.Wrapf(err, "removing %q", path)
+	}
+
+	return nil
+}
+
 // Params returns params for a component.
 func (y *YAML) Params(envName string) ([]ModuleParameter, error) {
 	y.log().WithField("env-name", envName).Debug("getting component params")