Remove ephelper and other endpoints code.

appengine/ephelper/context.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package ephelper
-
-import (
-        "fmt"
-
-        "github.com/GoogleCloudPlatform/go-endpoints/endpoints"
-        "golang.org/x/net/context"
-)
-
-type serviceCallKeyType int
-
-var serviceCallKey serviceCallKeyType
-
-type serviceCall struct {
-        mi *endpoints.MethodInfo
-}
-
-// ServiceBase is an embeddable base class for endpoints services.
-//
-// Example:
-//
-//   type MyService struct {
-//     *ServiceBase
-//   }
-//
-//   func (s *MyService) MyCoolEndpoint(c context.Context) error {
-//     c, err = s.Use(c, myMethodInfo)
-//     if err != nil {
-//       return err
-//     }
-//     ...
-//   }
-type ServiceBase struct {
-        // Middleware is the set of middleware context manipulators to run for this
-        // service.
-        //
-        // If nil, the middleware stack returned by DefaultMiddleware will be used.
-        Middleware []Middleware
-}
-
-// Use should be called at the beginning of a Cloud Endpoint handler to
-// initialize the handler's baseline Context and authenticate the call.
-func (s *ServiceBase) Use(c context.Context, mi *endpoints.MethodInfo) (context.Context, error) {
-        // In case the developer forgot to set it...
-        if s == nil {
-                return c, fmt.Errorf("no ServiceBase is configured for: %#v", mi)
-        }
-
-        // Embed our service context.
-        sc := serviceCall{
-                mi: mi,
-        }
-        c = context.WithValue(c, serviceCallKey, &sc)
-
-        middleware := s.Middleware
-        if middleware == nil {
-                middleware = []Middleware{DefaultMiddleware(nil)}
-        }
-        for _, mw := range middleware {
-                ic, err := mw(c)
-                if err != nil {
-                        return c, err
-                }
-                c = ic
-        }
-
-        return c, nil
-}
-
-// MethodInfo returns the endpoints.MethodInfo for the current service call.
-func MethodInfo(c context.Context) *endpoints.MethodInfo {
-        if sc, ok := c.Value(serviceCallKey).(*serviceCall); ok {
-                return sc.mi
-        }
-        return nil
-}