Reland: Refactor current GAE abstraction library to be free of the SDK*

go/src/infra/gae/libs/wrapper/globalinfo.go

Index: go/src/infra/gae/libs/wrapper/globalinfo.go
diff --git a/go/src/infra/gae/libs/wrapper/globalinfo.go b/go/src/infra/gae/libs/wrapper/globalinfo.go
deleted file mode 100644
index aab66bb572aa170460beb429b4059e042e2fd4c9..0000000000000000000000000000000000000000
--- a/go/src/infra/gae/libs/wrapper/globalinfo.go
+++ /dev/null
@@ -1,80 +0,0 @@
-// 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 wrapper
-
-import (
-	"time"
-
-	"appengine"
-
-	"golang.org/x/net/context"
-)
-
-// GlobalInfo is the interface for all of the package methods which normally
-// would be in the 'appengine' package.
-type GlobalInfo interface {
-	// methods usually requiring a Context
-
-	AccessToken(scopes ...string) (token string, expiry time.Time, err error)
-	AppID() string
-	DefaultVersionHostname() string
-	ModuleHostname(module, version, instance string) (string, error)
-	ModuleName() string
-	PublicCertificates() ([]appengine.Certificate, error)
-	RequestID() string
-	ServiceAccount() (string, error)
-	SignBytes(bytes []byte) (keyName string, signature []byte, err error)
-	VersionID() string
-
-	// our tweaked interface
-
-	// Namespace takes the new namespace as a string, and returns a context
-	// set to use that namespace, or an error.
-	// The appengine SDK doesn't document what errors you can see from this
-	// method, or under what circumstances they might occur.
-	Namespace(namespace string) (context.Context, error)
-
-	// Really global functions... these don't normally even require context, but
-	// for the purposes of testing+consistency, they're included here.
-
-	Datacenter() string
-	InstanceID() string
-	IsDevAppserver() bool
-	ServerSoftware() string
-
-	IsCapabilityDisabled(err error) bool
-	IsOverQuota(err error) bool
-	IsTimeoutError(err error) bool
-
-	// Backends are deprecated in favor of modules, so simplify this a bit by
-	// omitting them from the interface.
-	// BackendHostname(name string, index int) string
-	// BackendInstance() (name string, index int)
-}
-
-// GIFactory is the function signature for factory methods compatible with
-// SetGIFactory.
-type GIFactory func(context.Context) GlobalInfo
-
-// GetGI gets gets the GlobalInfo implementation from context.
-func GetGI(c context.Context) GlobalInfo {
-	if f, ok := c.Value(globalInfoKey).(GIFactory); ok && f != nil {
-		return f(c)
-	}
-	return nil
-}
-
-// SetGIFactory sets the function to produce GlobalInfo instances, as returned
-// by the GetGI method.
-func SetGIFactory(c context.Context, gif GIFactory) context.Context {
-	return context.WithValue(c, globalInfoKey, gif)
-}
-
-// SetGI sets the current GlobalInfo object in the context. Useful for testing
-// with a quick mock. This is just a shorthand SetGIFactory invocation to set
-// a factory which always returns the same object.
-func SetGI(c context.Context, gi GlobalInfo) context.Context {
-	return SetGIFactory(c, func(context.Context) GlobalInfo { return gi })
-}