Add .metadata folder to env dir structure

This change simply hides the environment metadata details that we do not
want users directly modifying into a .metadata folder.

metadata/environment.go

@@ -30,7 +30,8 @@ import (
 )
 
 const (
-	defaultEnvName = "default"
+	defaultEnvName  = "default"
+	metadataDirName = ".metadata"
 
 	schemaFilename        = "swagger.json"
 	extensionsLibFilename = "k.libsonnet"
@@ -87,11 +88,17 @@ func (m *manager) createEnvironment(name, uri string, extensionsLibData, k8sLibD
 		return err
 	}
 
+	metadataPath := appendToAbsPath(envPath, metadataDirName)
+	err = m.appFS.MkdirAll(string(metadataPath), defaultFolderPermissions)
+	if err != nil {
+		return err
+	}
+
 	log.Infof("Generating environment metadata at path '%s'", envPath)
 
 	// Generate the schema file.
 	log.Debugf("Generating '%s', length: %d", schemaFilename, len(specData))
-	schemaPath := appendToAbsPath(envPath, schemaFilename)
+	schemaPath := appendToAbsPath(metadataPath, schemaFilename)
 	err = afero.WriteFile(m.appFS, string(schemaPath), specData, defaultFilePermissions)
 	if err != nil {
 		log.Debugf("Failed to write '%s'", schemaFilename)
@@ -99,7 +106,7 @@ func (m *manager) createEnvironment(name, uri string, extensionsLibData, k8sLibD
 	}
 
 	log.Debugf("Generating '%s', length: %d", k8sLibFilename, len(k8sLibData))
-	k8sLibPath := appendToAbsPath(envPath, k8sLibFilename)
+	k8sLibPath := appendToAbsPath(metadataPath, k8sLibFilename)
 	err = afero.WriteFile(m.appFS, string(k8sLibPath), k8sLibData, defaultFilePermissions)
 	if err != nil {
 		log.Debugf("Failed to write '%s'", k8sLibFilename)
@@ -107,7 +114,7 @@ func (m *manager) createEnvironment(name, uri string, extensionsLibData, k8sLibD
 	}
 
 	log.Debugf("Generating '%s', length: %d", extensionsLibFilename, len(extensionsLibData))
-	extensionsLibPath := appendToAbsPath(envPath, extensionsLibFilename)
+	extensionsLibPath := appendToAbsPath(metadataPath, extensionsLibFilename)
 	err = afero.WriteFile(m.appFS, string(extensionsLibPath), extensionsLibData, defaultFilePermissions)
 	if err != nil {
 		log.Debugf("Failed to write '%s'", extensionsLibFilename)

metadata/manager.go

@@ -170,7 +170,7 @@ func (m *manager) CreateComponent(name string, text string, templateType prototy
 }
 
 func (m *manager) LibPaths(envName string) (libPath, envLibPath AbsPath) {
-	return m.libPath, appendToAbsPath(m.environmentsPath, envName)
+	return m.libPath, appendToAbsPath(m.environmentsPath, envName, metadataDirName)
 }
 
 func (m *manager) createAppDirTree() error {

metadata/manager_test.go

@@ -84,8 +84,10 @@ func TestInitSuccess(t *testing.T) {
 		}
 	}
 
-	envPath := appendToAbsPath(appPath, string(defaultEnvDir))
-	schemaPath := appendToAbsPath(envPath, schemaFilename)
+	envPath := appendToAbsPath(appPath, string(environmentsDir))
+	metadataPath := appendToAbsPath(appPath, string(defaultEnvDir), string(metadataDirName))
+
+	schemaPath := appendToAbsPath(metadataPath, schemaFilename)
 	bytes, err := afero.ReadFile(testFS, string(schemaPath))
 	if err != nil {
 		t.Fatalf("Failed to read swagger file at '%s':\n%v", schemaPath, err)
@@ -93,7 +95,7 @@ func TestInitSuccess(t *testing.T) {
 		t.Fatalf("Expected swagger file at '%s' to have value: '%s', got: '%s'", schemaPath, blankSwaggerData, actualSwagger)
 	}
 
-	k8sLibPath := appendToAbsPath(envPath, k8sLibFilename)
+	k8sLibPath := appendToAbsPath(metadataPath, k8sLibFilename)
 	k8sLibBytes, err := afero.ReadFile(testFS, string(k8sLibPath))
 	if err != nil {
 		t.Fatalf("Failed to read ksonnet-lib file at '%s':\n%v", k8sLibPath, err)
@@ -101,7 +103,7 @@ func TestInitSuccess(t *testing.T) {
 		t.Fatalf("Expected swagger file at '%s' to have value: '%s', got: '%s'", k8sLibPath, blankK8sLib, actualK8sLib)
 	}
 
-	extensionsLibPath := appendToAbsPath(envPath, extensionsLibFilename)
+	extensionsLibPath := appendToAbsPath(metadataPath, extensionsLibFilename)
 	extensionsLibBytes, err := afero.ReadFile(testFS, string(extensionsLibPath))
 	if err != nil {
 		t.Fatalf("Failed to read ksonnet-lib file at '%s':\n%v", extensionsLibPath, err)