Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/google.golang.org/appengine/internal/identity.go b/vendor/google.golang.org/appengine/internal/identity.go
new file mode 100644
index 0000000..9b4134e
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity.go
@@ -0,0 +1,55 @@
+// Copyright 2011 Google Inc. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package internal
+
+import (
+ "os"
+
+ netcontext "golang.org/x/net/context"
+)
+
+var (
+ // This is set to true in identity_classic.go, which is behind the appengine build tag.
+ // The appengine build tag is set for the first generation runtimes (<= Go 1.9) but not
+ // the second generation runtimes (>= Go 1.11), so this indicates whether we're on a
+ // first-gen runtime. See IsStandard below for the second-gen check.
+ appengineStandard bool
+
+ // This is set to true in identity_flex.go, which is behind the appenginevm build tag.
+ appengineFlex bool
+)
+
+// AppID is the implementation of the wrapper function of the same name in
+// ../identity.go. See that file for commentary.
+func AppID(c netcontext.Context) string {
+ return appID(FullyQualifiedAppID(c))
+}
+
+// IsStandard is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsStandard() bool {
+ // appengineStandard will be true for first-gen runtimes (<= Go 1.9) but not
+ // second-gen (>= Go 1.11).
+ return appengineStandard || IsSecondGen()
+}
+
+// IsStandard is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsSecondGen() bool {
+ // Second-gen runtimes set $GAE_ENV so we use that to check if we're on a second-gen runtime.
+ return os.Getenv("GAE_ENV") == "standard"
+}
+
+// IsFlex is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsFlex() bool {
+ return appengineFlex
+}
+
+// IsAppEngine is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsAppEngine() bool {
+ return IsStandard() || IsFlex()
+}