From 8f48aeeb8fde115938193e7b52217644b8ca2bfe Mon Sep 17 00:00:00 2001
From: fanmin shi <fanmin.shi@coreos.com>
Date: Wed, 21 Feb 2018 11:27:03 -0800
Subject: [PATCH] pkg/generator: add stub/handler.go generator

---
 pkg/generator/gen_handler.go  | 27 +++++++++++++++++++++++++++
 pkg/generator/handler_tmpl.go | 17 +++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 pkg/generator/gen_handler.go
 create mode 100644 pkg/generator/handler_tmpl.go

diff --git a/pkg/generator/gen_handler.go b/pkg/generator/gen_handler.go
new file mode 100644
index 0000000000..9c4367ce63
--- /dev/null
+++ b/pkg/generator/gen_handler.go
@@ -0,0 +1,27 @@
+package generator
+
+import (
+	"io"
+	"text/template"
+)
+
+// Handler contains all the customized data needed to generate stub/handler.go for a new operator
+// when pairing with handlerTmpl template.
+type Handler struct {
+	// imports
+	OperatorSDKImport string
+}
+
+// renderHandler generates the stub/handler.go file.
+func renderHandler(w io.Writer) error {
+	t := template.New("stub/handler.go")
+	t, err := t.Parse(handlerTmpl)
+	if err != nil {
+		return err
+	}
+
+	h := Handler{
+		OperatorSDKImport: sdkImport,
+	}
+	return t.Execute(w, h)
+}
diff --git a/pkg/generator/handler_tmpl.go b/pkg/generator/handler_tmpl.go
new file mode 100644
index 0000000000..d8940aaed2
--- /dev/null
+++ b/pkg/generator/handler_tmpl.go
@@ -0,0 +1,17 @@
+package generator
+
+// handlerTmpl is the template for stub/handler.go.
+const handlerTmpl = `package stub
+
+import (
+	"{{.OperatorSDKImport}}/types"
+)
+
+type Handler struct {
+	// Fill me
+}
+
+func (h *Handler) Handle(ctx types.Context, event types.Event) {
+	// Fill me
+}
+`