55 lines
1.8 KiB
Go
55 lines
1.8 KiB
Go
// Copyright 2011 Google Inc. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package internal
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import (
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"os"
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netcontext "golang.org/x/net/context"
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)
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var (
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// This is set to true in identity_classic.go, which is behind the appengine build tag.
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// The appengine build tag is set for the first generation runtimes (<= Go 1.9) but not
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// the second generation runtimes (>= Go 1.11), so this indicates whether we're on a
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// first-gen runtime. See IsStandard below for the second-gen check.
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appengineStandard bool
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// This is set to true in identity_flex.go, which is behind the appenginevm build tag.
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appengineFlex bool
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)
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// AppID is the implementation of the wrapper function of the same name in
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// ../identity.go. See that file for commentary.
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func AppID(c netcontext.Context) string {
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return appID(FullyQualifiedAppID(c))
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}
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// IsStandard is the implementation of the wrapper function of the same name in
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// ../appengine.go. See that file for commentary.
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func IsStandard() bool {
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// appengineStandard will be true for first-gen runtimes (<= Go 1.9) but not
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// second-gen (>= Go 1.11).
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return appengineStandard || IsSecondGen()
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}
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// IsStandard is the implementation of the wrapper function of the same name in
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// ../appengine.go. See that file for commentary.
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func IsSecondGen() bool {
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// Second-gen runtimes set $GAE_ENV so we use that to check if we're on a second-gen runtime.
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return os.Getenv("GAE_ENV") == "standard"
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}
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// IsFlex is the implementation of the wrapper function of the same name in
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// ../appengine.go. See that file for commentary.
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func IsFlex() bool {
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return appengineFlex
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}
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// IsAppEngine is the implementation of the wrapper function of the same name in
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// ../appengine.go. See that file for commentary.
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func IsAppEngine() bool {
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return IsStandard() || IsFlex()
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}
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