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flavors.go
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flavors.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package shootflavors
import (
"fmt"
"github.com/Masterminds/semver/v3"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/hashicorp/go-multierror"
"github.com/pkg/errors"
"k8s.io/utils/ptr"
"k8s.io/utils/strings/slices"
"github.com/gardener/test-infra/pkg/common"
"github.com/gardener/test-infra/pkg/util"
)
// Validate validates a shoot flavor and checks if all necessary attributes are set
func Validate(identifier string, flavor *common.ShootFlavor) error {
var allErrs *multierror.Error
if flavor.Provider == "" {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s.provider: value has to be defined", identifier))
}
if flavor.KubernetesVersions.Versions == nil && flavor.KubernetesVersions.Pattern == nil {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s.kubernetes : Kubernetes versions or a pattern has to be defined", identifier))
}
if len(flavor.Workers) != 0 {
for i, pool := range flavor.Workers {
identifier := fmt.Sprintf("%s[%d].workerPools", identifier, i)
if len(pool.WorkerPools) == 0 {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s: at least one worker pool has to be defined", identifier))
continue
}
for j, workers := range pool.WorkerPools {
if workers.Machine.Image == nil {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s[%d].machine.image: value has to be defined", identifier, j))
}
if workers.Machine.Architecture != nil && !slices.Contains(v1beta1constants.ValidArchitectures, *workers.Machine.Architecture) {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s[%d].machine.architecture: value is invalid", identifier, j))
}
}
}
}
if len(flavor.AdditionalLocations) != 0 {
for i, location := range flavor.AdditionalLocations {
if location.Type == "" {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s.additionalLocations[%d].type: value has to be defined", identifier, i))
}
if location.Repo == "" {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s.additionalLocations[%d].repo: value has to be defined", identifier, i))
}
if location.Revision == "" {
allErrs = multierror.Append(allErrs, fmt.Errorf("%s.additionalLocations[%d].revision: value has to be defined", identifier, i))
}
}
}
return util.ReturnMultiError(allErrs)
}
// DefaultShootMachineArchitecture defaults machine architecture of a worker pool to `amd64` if it is not set.
func DefaultShootMachineArchitecture(workers []common.ShootWorkerFlavor) {
for i := range workers {
for j := range workers[i].WorkerPools {
if workers[i].WorkerPools[j].Machine.Architecture == nil {
workers[i].WorkerPools[j].Machine.Architecture = ptr.To(v1beta1constants.ArchitectureAMD64)
}
}
}
}
// New creates an internal representation of raw shoot flavors.
// It also parses the flavors and creates the resulting shoots.
func New(rawFlavors []*common.ShootFlavor) (*Flavors, error) {
versions := make(map[common.CloudProvider]gardencorev1beta1.KubernetesSettings)
machineImages := make(map[common.CloudProvider][]gardencorev1beta1.MachineImage)
addVersion := addKubernetesVersionFunc(versions)
addMachineImage := addMachineImagesFunc(machineImages)
shoots := make([]*common.Shoot, 0)
for i, rawFlavor := range rawFlavors {
DefaultShootMachineArchitecture(rawFlavor.Workers)
if err := Validate(fmt.Sprintf("flavor[%d]", i), rawFlavor); err != nil {
return nil, err
}
versions, err := ParseKubernetesVersions(rawFlavor.KubernetesVersions)
if err != nil {
return nil, err
}
for _, k8sVersion := range versions {
addVersion(rawFlavor.Provider, k8sVersion)
if len(rawFlavor.Workers) != 0 {
for _, workers := range rawFlavor.Workers {
for _, pool := range workers.WorkerPools {
addMachineImage(rawFlavor.Provider, pool.Machine.Image.Name, *pool.Machine.Image.Version, []string{*pool.Machine.Architecture})
}
shoots = append(shoots, &common.Shoot{
AdditionalAnnotations: rawFlavor.AdditionalAnnotations,
AdditionalLocations: rawFlavor.AdditionalLocations,
Provider: rawFlavor.Provider,
KubernetesVersion: k8sVersion,
Workers: workers.WorkerPools,
})
}
continue
}
shoots = append(shoots, &common.Shoot{
AdditionalAnnotations: rawFlavor.AdditionalAnnotations,
AdditionalLocations: rawFlavor.AdditionalLocations,
Provider: rawFlavor.Provider,
KubernetesVersion: k8sVersion,
})
}
}
return &Flavors{
Info: rawFlavors,
shoots: shoots,
usedKubernetesVersions: versions,
usedMachineImages: machineImages,
}, nil
}
// GetShoots returns a list of all shoots that are defined by the given flavors.
func (f *Flavors) GetShoots() []*common.Shoot {
if f.shoots == nil {
return []*common.Shoot{}
}
return f.shoots
}
// GetUsedKubernetesVersions returns a list of unique kubernetes versions used across all shoots.
func (f *Flavors) GetUsedKubernetesVersions() map[common.CloudProvider]gardencorev1beta1.KubernetesSettings {
if f.usedKubernetesVersions == nil {
return map[common.CloudProvider]gardencorev1beta1.KubernetesSettings{}
}
return f.usedKubernetesVersions
}
func (f *Flavors) GetUsedMachineImages() map[common.CloudProvider][]gardencorev1beta1.MachineImage {
if f.usedMachineImages == nil {
return make(map[common.CloudProvider][]gardencorev1beta1.MachineImage)
}
return f.usedMachineImages
}
// addKubernetesVersionFunc adds a new kubernetes version to a list of unique versions per cloudprovider.
func addKubernetesVersionFunc(versions map[common.CloudProvider]gardencorev1beta1.KubernetesSettings) func(common.CloudProvider, gardencorev1beta1.ExpirableVersion) {
used := make(map[common.CloudProvider]map[string]interface{})
return func(provider common.CloudProvider, version gardencorev1beta1.ExpirableVersion) {
if _, ok := used[provider]; !ok {
used[provider] = map[string]interface{}{version.Version: new(interface{})}
versions[provider] = gardencorev1beta1.KubernetesSettings{Versions: []gardencorev1beta1.ExpirableVersion{version}}
return
}
if _, ok := used[provider][version.Version]; !ok {
used[provider][version.Version] = new(interface{})
versions[provider] = gardencorev1beta1.KubernetesSettings{
Versions: append(versions[provider].Versions, version),
}
}
}
}
// addMachineImagesFunc adds a new machine image version to a list of unique versions per cloudprovider.
func addMachineImagesFunc(images map[common.CloudProvider][]gardencorev1beta1.MachineImage) func(common.CloudProvider, string, string, []string) {
used := make(map[common.CloudProvider]map[string]map[string]interface{})
indexMapping := make(map[common.CloudProvider]map[string]int)
return func(provider common.CloudProvider, name, version string, arch []string) {
if _, ok := used[provider]; !ok {
used[provider] = map[string]map[string]interface{}{
name: {version: new(interface{})},
}
indexMapping[provider] = map[string]int{name: 0}
images[provider] = []gardencorev1beta1.MachineImage{
{
Name: name,
Versions: MachineImageVersions(map[string][]string{version: arch}),
},
}
return
}
if _, ok := used[provider][name]; !ok {
used[provider][name] = map[string]interface{}{version: new(interface{})}
indexMapping[provider][name] = len(images[provider]) - 1
images[provider] = append(images[provider], gardencorev1beta1.MachineImage{
Name: name,
Versions: MachineImageVersions(map[string][]string{version: arch}),
})
return
}
if _, ok := used[provider][name][version]; !ok {
used[provider][name][version] = new(interface{})
index := indexMapping[provider][name]
images[provider][index].Versions = append(images[provider][index].Versions, MachineImageVersion(version, arch))
}
}
}
// ParseKubernetesVersions parses kubernetes versions flavor and returns a list of kubernetes versions.
// This function will not read from cloudprofile as it is meant to be used in the full gardener tests where there is no landscape
// to fetch versions at this point in time.
func ParseKubernetesVersions(versions common.ShootKubernetesVersionFlavor) ([]gardencorev1beta1.ExpirableVersion, error) {
if versions.Versions != nil && len(*versions.Versions) != 0 {
for _, v := range *versions.Versions {
_, err := semver.NewVersion(v.Version)
if err != nil {
return nil, errors.Wrapf(err, "invalid version %s", v.Version)
}
}
return *versions.Versions, nil
}
if *versions.Pattern != "" {
return nil, errors.New("unable to read versions from cloudprofile. Only concrete kubernetes versions are allowed")
}
return nil, errors.New("no kubernetes versions or patterns are defined")
}
// MachineImageVersion creates a new machine image version
func MachineImageVersion(version string, architectures []string) gardencorev1beta1.MachineImageVersion {
return gardencorev1beta1.MachineImageVersion{
ExpirableVersion: gardencorev1beta1.ExpirableVersion{
Version: version,
},
Architectures: architectures,
}
}
// MachineImageVersions creates a new list of machine image versions
func MachineImageVersions(versions map[string][]string) []gardencorev1beta1.MachineImageVersion {
images := []gardencorev1beta1.MachineImageVersion{}
for version, arch := range versions {
images = append(images, MachineImageVersion(version, arch))
}
return images
}