From 922df190f0aca37c709e78368090de693da6f9d1 Mon Sep 17 00:00:00 2001
From: Hongchao Deng <hongchaodeng1@gmail.com>
Date: Wed, 7 Feb 2018 13:30:46 -0800
Subject: [PATCH] *: render directory layout

---
 .gitignore                 |  9 ++++++
 cmd/operator-sdk/main.go   | 13 ++++++++
 pkg/generator/generator.go | 61 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 83 insertions(+)
 create mode 100644 cmd/operator-sdk/main.go
 create mode 100644 pkg/generator/generator.go

diff --git a/.gitignore b/.gitignore
index a1338d68517..8ba78ab3c11 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,12 @@
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+
+# Folders
+vendor
+_obj
+_test
+_output
+.kube
+.vscode
+.idea
diff --git a/cmd/operator-sdk/main.go b/cmd/operator-sdk/main.go
new file mode 100644
index 00000000000..924b83c19de
--- /dev/null
+++ b/cmd/operator-sdk/main.go
@@ -0,0 +1,13 @@
+package main
+
+import (
+	"github.com/coreos/operator-sdk/pkg/generator"
+)
+
+func main() {
+	g := &generator.Generator{}
+	err := g.Render()
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/pkg/generator/generator.go b/pkg/generator/generator.go
new file mode 100644
index 00000000000..58ebcec46fb
--- /dev/null
+++ b/pkg/generator/generator.go
@@ -0,0 +1,61 @@
+package generator
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const defaultFileMode = 0750
+
+type Generator struct {
+}
+
+func (g *Generator) Render() error {
+	gopath, ok := os.LookupEnv("GOPATH")
+	if !ok {
+		return errors.New("GOPATH must be set")
+	}
+	projDir, ok := os.LookupEnv("PROJECT") // github.com/coreos/play
+	if !ok {
+		return errors.New("PROJECT must be set")
+	}
+	apiGroup, ok := os.LookupEnv("APIGROUP") // play.coreos.com/v1alpha1
+	if !ok {
+		return errors.New("PROJECT must be set")
+	}
+
+	projDir = filepath.Join(gopath, "src", projDir)
+	err := os.MkdirAll(projDir, defaultFileMode)
+	if err != nil {
+		return err
+	}
+
+	programName := func() string {
+		splits := strings.Split(projDir, "/")
+		return splits[len(splits)-1]
+	}()
+	err = os.MkdirAll(filepath.Join(projDir, "cmd", programName), defaultFileMode)
+	if err != nil {
+		return err
+	}
+
+	// pkg/apis/
+	groupName, apiVersion := func() (string, string) {
+		splits := strings.Split(apiGroup, "/")
+		return strings.Split(splits[0], ".")[0], splits[1]
+	}()
+	err = os.MkdirAll(filepath.Join(projDir, "pkg/apis", groupName, apiVersion), defaultFileMode)
+	if err != nil {
+		return err
+	}
+
+	// pkg/controller/
+	err = os.MkdirAll(filepath.Join(projDir, "pkg/controller"), defaultFileMode)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}