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azure.go
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azure.go
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/*
Copyright 2022 Red Hat, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package controlplanemachinesetgenerator
import (
"encoding/json"
"errors"
"fmt"
"github.com/go-logr/logr"
configv1 "github.com/openshift/api/config/v1"
machinev1 "github.com/openshift/api/machine/v1"
machinev1beta1 "github.com/openshift/api/machine/v1beta1"
machinev1builder "github.com/openshift/client-go/machine/applyconfigurations/machine/v1"
machinev1beta1builder "github.com/openshift/client-go/machine/applyconfigurations/machine/v1beta1"
"github.com/openshift/cluster-control-plane-machine-set-operator/pkg/machineproviders/providers/openshift/machine/v1beta1/failuredomain"
"github.com/openshift/cluster-control-plane-machine-set-operator/pkg/machineproviders/providers/openshift/machine/v1beta1/providerconfig"
"k8s.io/apimachinery/pkg/runtime"
)
// generateControlPlaneMachineSetAzureSpec generates an Azure flavored ControlPlaneMachineSet Spec.
func generateControlPlaneMachineSetAzureSpec(logger logr.Logger, machines []machinev1beta1.Machine, machineSets []machinev1beta1.MachineSet) (machinev1builder.ControlPlaneMachineSetSpecApplyConfiguration, error) {
controlPlaneMachineSetMachineFailureDomainsApplyConfig, err := buildFailureDomains(logger, machineSets, machines, nil)
if errors.Is(err, errNoFailureDomains) {
// This is a special case where we don't have any failure domains.
} else if err != nil {
return machinev1builder.ControlPlaneMachineSetSpecApplyConfiguration{}, fmt.Errorf("failed to build ControlPlaneMachineSet's Azure failure domains: %w", err)
}
controlPlaneMachineSetMachineSpecApplyConfig, err := buildControlPlaneMachineSetAzureMachineSpec(logger, machines)
if err != nil {
return machinev1builder.ControlPlaneMachineSetSpecApplyConfiguration{}, fmt.Errorf("failed to build ControlPlaneMachineSet's Azure spec: %w", err)
}
// We want to work with the newest machine.
controlPlaneMachineSetApplyConfigSpec := genericControlPlaneMachineSetSpec(replicas, machines[0].ObjectMeta.Labels[clusterIDLabelKey])
controlPlaneMachineSetApplyConfigSpec.Template.OpenShiftMachineV1Beta1Machine.FailureDomains = controlPlaneMachineSetMachineFailureDomainsApplyConfig
controlPlaneMachineSetApplyConfigSpec.Template.OpenShiftMachineV1Beta1Machine.Spec = controlPlaneMachineSetMachineSpecApplyConfig
return controlPlaneMachineSetApplyConfigSpec, nil
}
// buildControlPlaneMachineSetAzureMachineSpec builds an Azure flavored MachineSpec for the ControlPlaneMachineSet.
func buildControlPlaneMachineSetAzureMachineSpec(logger logr.Logger, machines []machinev1beta1.Machine) (*machinev1beta1builder.MachineSpecApplyConfiguration, error) {
// The machines slice is sorted by the creation time.
// We want to get the provider config for the newest machine.
providerConfigs := []providerconfig.ProviderConfig{}
for _, machine := range machines {
providerconfig, err := providerconfig.NewProviderConfigFromMachineSpec(logger, machine.Spec, nil)
if err != nil {
return nil, fmt.Errorf("failed to extract machine's azure providerSpec: %w", err)
}
providerConfigs = append(providerConfigs, providerconfig)
}
azureProviderSpec := providerConfigs[0].Azure().Config()
if !allProviderConfigZonesMatch(providerConfigs) {
azureProviderSpec.Zone = ""
}
if !allProviderConfigSubnetsMatch(providerConfigs) {
azureProviderSpec.Subnet = ""
}
rawBytes, err := json.Marshal(azureProviderSpec)
if err != nil {
return nil, fmt.Errorf("error marshalling azure providerSpec: %w", err)
}
re := runtime.RawExtension{
Raw: rawBytes,
}
return &machinev1beta1builder.MachineSpecApplyConfiguration{
ProviderSpec: &machinev1beta1builder.ProviderSpecApplyConfiguration{Value: &re},
}, nil
}
func allProviderConfigSubnetsMatch(providerConfigs []providerconfig.ProviderConfig) bool {
firstSubnet := providerConfigs[0].Azure().Config().Subnet
for _, config := range providerConfigs {
if config.Azure().Config().Subnet != firstSubnet {
return false
}
}
return true
}
func allProviderConfigZonesMatch(providerConfigs []providerconfig.ProviderConfig) bool {
firstZone := providerConfigs[0].Azure().Config().Zone
for _, config := range providerConfigs {
if config.Azure().Config().Zone != firstZone {
return false
}
}
return true
}
// buildAzureFailureDomains builds an Azure flavored FailureDomains for the ControlPlaneMachineSet.
func buildAzureFailureDomains(failureDomains *failuredomain.Set) (machinev1.FailureDomains, error) { //nolint:unparam
azureFailureDomains := []machinev1.AzureFailureDomain{}
for _, fd := range failureDomains.List() {
azureFailureDomains = append(azureFailureDomains, fd.Azure())
}
// If there is only one failure domain, then all of its fields are already set in the template providerSpec.
if len(azureFailureDomains) <= 1 {
return machinev1.FailureDomains{}, nil
}
if allFailureDomainsSubnetsMatch(azureFailureDomains) {
for i := range azureFailureDomains {
azureFailureDomains[i].Subnet = ""
}
}
if allFailureDomainsZonesMatch(azureFailureDomains) {
for i := range azureFailureDomains {
azureFailureDomains[i].Zone = ""
}
}
cpmsFailureDomain := machinev1.FailureDomains{
Azure: &azureFailureDomains,
Platform: configv1.AzurePlatformType,
}
return cpmsFailureDomain, nil
}
func allFailureDomainsZonesMatch(azureFailureDomains []machinev1.AzureFailureDomain) bool {
if len(azureFailureDomains) == 0 {
return true
}
for _, fd := range azureFailureDomains {
if fd.Zone != azureFailureDomains[0].Zone {
return false
}
}
return true
}
func allFailureDomainsSubnetsMatch(azureFailureDomains []machinev1.AzureFailureDomain) bool {
if len(azureFailureDomains) == 0 {
return true
}
for _, fd := range azureFailureDomains {
if fd.Subnet != azureFailureDomains[0].Subnet {
return false
}
}
return true
}