69 lines
2.1 KiB
Go
69 lines
2.1 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 to keep track of API Versions that should be registered in api.Scheme.
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package registered
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import (
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"os"
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"strings"
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"github.com/golang/glog"
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)
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// List of registered API versions.
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// The list is in the order of most preferred to the least.
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var RegisteredVersions []string
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func init() {
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validAPIVersions := map[string]bool{
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"v1": true,
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"v1beta1": true,
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"v1beta2": true,
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"v1beta3": true,
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}
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// The default list of supported api versions, in order of most preferred to the least.
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defaultSupportedVersions := "v1beta3,v1beta1,v1beta2,v1"
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// Env var KUBE_API_VERSIONS is a comma separated list of API versions that should be registered in the scheme.
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// The versions should be in the order of most preferred to the least.
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supportedVersions := os.Getenv("KUBE_API_VERSIONS")
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if supportedVersions == "" {
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supportedVersions = defaultSupportedVersions
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}
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versions := strings.Split(supportedVersions, ",")
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for _, version := range versions {
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// Verify that the version is valid.
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valid, ok := validAPIVersions[version]
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if !ok || !valid {
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// Not a valid API version.
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glog.Fatalf("invalid api version: %s in KUBE_API_VERSIONS: %s. List of valid API versions: %v",
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version, os.Getenv("KUBE_API_VERSIONS"), validAPIVersions)
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}
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RegisteredVersions = append(RegisteredVersions, version)
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}
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}
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// Returns true if the given api version is one of the registered api versions.
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func IsRegisteredAPIVersion(version string) bool {
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for _, apiVersion := range RegisteredVersions {
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if apiVersion == version {
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return true
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}
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}
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return false
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}
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