1 // Copyright 2011 Google Inc. All rights reserved.
2 // Use of this source code is governed by the Apache 2.0
3 // license that can be found in the LICENSE file.
10 netcontext "golang.org/x/net/context"
14 // This is set to true in identity_classic.go, which is behind the appengine build tag.
15 // The appengine build tag is set for the first generation runtimes (<= Go 1.9) but not
16 // the second generation runtimes (>= Go 1.11), so this indicates whether we're on a
17 // first-gen runtime. See IsStandard below for the second-gen check.
18 appengineStandard bool
20 // This is set to true in identity_flex.go, which is behind the appenginevm build tag.
24 // AppID is the implementation of the wrapper function of the same name in
25 // ../identity.go. See that file for commentary.
26 func AppID(c netcontext.Context) string {
27 return appID(FullyQualifiedAppID(c))
30 // IsStandard is the implementation of the wrapper function of the same name in
31 // ../appengine.go. See that file for commentary.
32 func IsStandard() bool {
33 // appengineStandard will be true for first-gen runtimes (<= Go 1.9) but not
34 // second-gen (>= Go 1.11).
35 return appengineStandard || IsSecondGen()
38 // IsStandard is the implementation of the wrapper function of the same name in
39 // ../appengine.go. See that file for commentary.
40 func IsSecondGen() bool {
41 // Second-gen runtimes set $GAE_ENV so we use that to check if we're on a second-gen runtime.
42 return os.Getenv("GAE_ENV") == "standard"
45 // IsFlex is the implementation of the wrapper function of the same name in
46 // ../appengine.go. See that file for commentary.
51 // IsAppEngine is the implementation of the wrapper function of the same name in
52 // ../appengine.go. See that file for commentary.
53 func IsAppEngine() bool {
54 return IsStandard() || IsFlex()