Scaffold admin app

pkg/proxy/modify.go

@@ -0,0 +1,24 @@
+package proxy
+
+import "net/http"
+
+var (
+	nopReqModifier = func(req *http.Request) {}
+	nopResModifier = func(res *http.Response) error { return nil }
+)
+
+// RequestModifyFunc defines a type for a function that can modify a HTTP
+// request before it's proxied.
+type RequestModifyFunc func(req *http.Request)
+
+// RequestModifyMiddleware defines a type for chaining request modifier
+// middleware.
+type RequestModifyMiddleware func(next RequestModifyFunc) RequestModifyFunc
+
+// ResponseModifyFunc defines a type for a function that can modify a HTTP
+// response before it's written back to the client.
+type ResponseModifyFunc func(res *http.Response) error
+
+// ResponseModifyMiddleware defines a type for chaining response modifier
+// middleware.
+type ResponseModifyMiddleware func(ResponseModifyFunc) ResponseModifyFunc