Make HTTP middleware easier to use

appengine/cmd/cron/ui/index.go

 // Copyright 2015 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package ui
 
 import (
-        "net/http"
-
-        "github.com/julienschmidt/httprouter"
-        "golang.org/x/net/context"
-
         "github.com/luci/luci-go/common/clock"
+        "github.com/luci/luci-go/server/router"
         "github.com/luci/luci-go/server/templates"
 )
 
-func indexPage(c context.Context, w http.ResponseWriter, r *http.Request, p httprouter.Params) {
-        jobs, err := config(c).Engine.GetAllCronJobs(c)
+func indexPage(c *router.Context) {
+        jobs, err := config(c.Context).Engine.GetAllCronJobs(c.Context)

[iannucci, 2016/06/13 19:23:28]

wdyt about making router.Context embed context.Context anonymously? e.g.

type Context struct {
  context.Context
  Writer http.ResponseWriter
  Request *http.Request
  Params httprouter.Params
}

Then you can just pass c here.

         if err != nil {
                 panic(err)
         }
-        templates.MustRender(c, w, "pages/index.html", map[string]interface{}{
-                "Jobs": convertToSortedCronJobs(jobs, clock.Now(c).UTC()),
+        templates.MustRender(c.Context, c.Writer, "pages/index.html", map[string]interface{}{
+                "Jobs": convertToSortedCronJobs(jobs, clock.Now(c.Context).UTC()),
         })
 }