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127 lines
3.6 KiB
127 lines
3.6 KiB
/*
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Copyright The Helm 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 chartutil
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import (
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"fmt"
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"strconv"
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"github.com/Masterminds/semver/v3"
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"k8s.io/client-go/kubernetes/scheme"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
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helmversion "helm.sh/helm/v3/internal/version"
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)
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var (
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// The Kubernetes version can be set by LDFLAGS. In order to do that the value
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// must be a string.
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k8sVersionMajor = "1"
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k8sVersionMinor = "20"
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// DefaultVersionSet is the default version set, which includes only Core V1 ("v1").
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DefaultVersionSet = allKnownVersions()
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// DefaultCapabilities is the default set of capabilities.
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DefaultCapabilities = &Capabilities{
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KubeVersion: KubeVersion{
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Version: fmt.Sprintf("v%s.%s.0", k8sVersionMajor, k8sVersionMinor),
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Major: k8sVersionMajor,
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Minor: k8sVersionMinor,
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},
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APIVersions: DefaultVersionSet,
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HelmVersion: helmversion.Get(),
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}
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)
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// Capabilities describes the capabilities of the Kubernetes cluster.
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type Capabilities struct {
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// KubeVersion is the Kubernetes version.
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KubeVersion KubeVersion
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// APIVersions are supported Kubernetes API versions.
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APIVersions VersionSet
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// HelmVersion is the build information for this helm version
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HelmVersion helmversion.BuildInfo
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}
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func (capabilities *Capabilities) Copy() *Capabilities {
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return &Capabilities{
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KubeVersion: capabilities.KubeVersion,
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APIVersions: capabilities.APIVersions,
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HelmVersion: capabilities.HelmVersion,
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}
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}
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// KubeVersion is the Kubernetes version.
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type KubeVersion struct {
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Version string // Kubernetes version
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Major string // Kubernetes major version
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Minor string // Kubernetes minor version
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}
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// String implements fmt.Stringer
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func (kv *KubeVersion) String() string { return kv.Version }
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// GitVersion returns the Kubernetes version string.
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//
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// Deprecated: use KubeVersion.Version.
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func (kv *KubeVersion) GitVersion() string { return kv.Version }
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// ParseKubeVersion parses kubernetes version from string
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func ParseKubeVersion(version string) (*KubeVersion, error) {
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sv, err := semver.NewVersion(version)
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if err != nil {
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return nil, err
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}
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return &KubeVersion{
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Version: "v" + sv.String(),
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Major: strconv.FormatUint(sv.Major(), 10),
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Minor: strconv.FormatUint(sv.Minor(), 10),
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}, nil
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}
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// VersionSet is a set of Kubernetes API versions.
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type VersionSet []string
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// Has returns true if the version string is in the set.
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//
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// vs.Has("apps/v1")
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func (v VersionSet) Has(apiVersion string) bool {
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for _, x := range v {
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if x == apiVersion {
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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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func allKnownVersions() VersionSet {
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// We should register the built in extension APIs as well so CRDs are
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// supported in the default version set. This has caused problems with `helm
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// template` in the past, so let's be safe
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apiextensionsv1beta1.AddToScheme(scheme.Scheme)
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apiextensionsv1.AddToScheme(scheme.Scheme)
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groups := scheme.Scheme.PrioritizedVersionsAllGroups()
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vs := make(VersionSet, 0, len(groups))
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for _, gv := range groups {
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vs = append(vs, gv.String())
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}
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return vs
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}
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