mirror of https://github.com/knative/pkg.git
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
/*
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Copyright 2019 The Knative Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package system
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import (
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"fmt"
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"os"
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)
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const (
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NamespaceEnvKey = "SYSTEM_NAMESPACE"
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)
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// Namespace holds the K8s namespace where our serving system
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// components run.
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func Namespace() string {
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if ns := os.Getenv(NamespaceEnvKey); ns != "" {
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return ns
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}
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panic(fmt.Sprintf(`The environment variable %q is not set
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If this is a process running on Kubernetes, then it should be using the downward
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API to initialize this variable via:
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env:
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- name: %s
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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If this is a Go unit test consuming system.Namespace() then it should add the
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following import:
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import (
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_ "knative.dev/pkg/system/testing"
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)`, NamespaceEnvKey, NamespaceEnvKey))
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}
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