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infrastructure.go
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infrastructure.go
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// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 validation
import (
"reflect"
"sort"
cidrvalidation "github.com/gardener/gardener/pkg/utils/validation/cidr"
"github.com/google/uuid"
apivalidation "k8s.io/apimachinery/pkg/api/validation"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/validation/field"
api "github.com/gardener/gardener-extension-provider-openstack/pkg/apis/openstack"
"github.com/gardener/gardener-extension-provider-openstack/pkg/utils"
)
// ValidateInfrastructureConfig validates a InfrastructureConfig object.
func ValidateInfrastructureConfig(infra *api.InfrastructureConfig, nodesCIDR *string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if len(infra.FloatingPoolName) == 0 {
allErrs = append(allErrs, field.Required(fldPath.Child("floatingPoolName"), "must provide the name of a floating pool"))
}
networkingPath := field.NewPath("networking")
var nodes cidrvalidation.CIDR
if nodesCIDR != nil {
nodes = cidrvalidation.NewCIDR(*nodesCIDR, networkingPath.Child("nodes"))
}
networksPath := fldPath.Child("networks")
if len(infra.Networks.Worker) == 0 && len(infra.Networks.Workers) == 0 {
allErrs = append(allErrs, field.Required(networksPath.Child("workers"), "must specify the network range for the worker network"))
}
var workerCIDR cidrvalidation.CIDR
if infra.Networks.Worker != "" {
workerCIDR = cidrvalidation.NewCIDR(infra.Networks.Worker, networksPath.Child("worker"))
allErrs = append(allErrs, cidrvalidation.ValidateCIDRParse(workerCIDR)...)
allErrs = append(allErrs, cidrvalidation.ValidateCIDRIsCanonical(networksPath.Child("worker"), infra.Networks.Worker)...)
}
if infra.Networks.Workers != "" {
workerCIDR = cidrvalidation.NewCIDR(infra.Networks.Workers, networksPath.Child("workers"))
allErrs = append(allErrs, cidrvalidation.ValidateCIDRParse(workerCIDR)...)
allErrs = append(allErrs, cidrvalidation.ValidateCIDRIsCanonical(networksPath.Child("workers"), infra.Networks.Workers)...)
}
if nodes != nil {
allErrs = append(allErrs, nodes.ValidateSubset(workerCIDR)...)
}
if infra.Networks.ID != nil {
if _, err := uuid.Parse(*infra.Networks.ID); err != nil {
allErrs = append(allErrs, field.Invalid(networksPath.Child("id"), infra.Networks.ID, "if network ID is provided it must be a valid OpenStack UUID"))
}
}
if infra.Networks.Router != nil && len(infra.Networks.Router.ID) == 0 {
allErrs = append(allErrs, field.Invalid(networksPath.Child("router", "id"), infra.Networks.Router.ID, "router id must not be empty when router key is provided"))
}
if infra.FloatingPoolSubnetName != nil && infra.Networks.Router != nil && len(infra.Networks.Router.ID) > 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("floatingPoolSubnetName"), infra.FloatingPoolSubnetName, "router id must be empty when a floating subnet name is provided"))
}
return allErrs
}
// ValidateInfrastructureConfigUpdate validates a InfrastructureConfig object.
func ValidateInfrastructureConfigUpdate(oldConfig, newConfig *api.InfrastructureConfig, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
newNetworks := newConfig.Networks
oldNetworks := oldConfig.Networks
// share network changes are allowed, therefore ignore them on comparing
newNetworks.ShareNetwork = nil
oldNetworks.ShareNetwork = nil
allErrs = append(allErrs, apivalidation.ValidateImmutableField(newNetworks, oldNetworks, fldPath.Child("networks"))...)
allErrs = append(allErrs, apivalidation.ValidateImmutableField(newConfig.FloatingPoolName, oldConfig.FloatingPoolName, fldPath.Child("floatingPoolName"))...)
allErrs = append(allErrs, apivalidation.ValidateImmutableField(newConfig.FloatingPoolSubnetName, oldConfig.FloatingPoolSubnetName, fldPath.Child("floatingPoolSubnetName"))...)
return allErrs
}
// ValidateInfrastructureConfigAgainstCloudProfile validates the given InfrastructureConfig against constraints in the given CloudProfile.
func ValidateInfrastructureConfigAgainstCloudProfile(oldInfra, infra *api.InfrastructureConfig, domain, shootRegion string, cloudProfileConfig *api.CloudProfileConfig, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if oldInfra == nil || oldInfra.FloatingPoolName != infra.FloatingPoolName {
allErrs = append(allErrs, validateFloatingPoolNameConstraints(cloudProfileConfig.Constraints.FloatingPools, domain, shootRegion, infra.FloatingPoolName, fldPath)...)
}
return allErrs
}
func validateFloatingPoolNameConstraints(fps []api.FloatingPool, domain, region string, name string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
_, errs := FindFloatingPool(fps, domain, region, name, fldPath.Child("floatingPoolName"))
allErrs = append(allErrs, errs...)
return allErrs
}
// FindFloatingPool finds best match for given domain, region, and name
func FindFloatingPool(floatingPools []api.FloatingPool, domain, shootRegion, floatingPoolName string, fldPath *field.Path) (*api.FloatingPool, field.ErrorList) {
var (
allErrs = field.ErrorList{}
validValues = sets.New[string]()
additionalValidValues = sets.New[string]()
)
found := findFloatingPoolCandidate(floatingPools, &domain, &shootRegion, floatingPoolName, false, validValues, additionalValidValues)
if found != nil {
return found, allErrs
}
// region and domain constraint must be checked together, as constraints of both must be fulfilled
nonConstrainingOnly := len(validValues) > 0
validValuesRegion := sets.New[string]()
validValuesDomain := sets.New[string]()
foundRegion := findFloatingPoolCandidate(floatingPools, nil, &shootRegion, floatingPoolName, nonConstrainingOnly, validValuesRegion, additionalValidValues)
foundDomain := findFloatingPoolCandidate(floatingPools, &domain, nil, floatingPoolName, nonConstrainingOnly, validValuesDomain, additionalValidValues)
if foundRegion != nil && foundDomain != nil {
return foundRegion, allErrs
}
if foundRegion != nil && len(validValuesDomain) == 0 {
return foundRegion, allErrs
}
if foundDomain != nil && len(validValuesRegion) == 0 {
return foundDomain, allErrs
}
if len(validValuesRegion) != 0 && len(validValuesDomain) != 0 {
// if region and domain are constrainted separately, only values are valid which are valid for both
validValues = validValuesRegion.Intersection(validValuesDomain)
} else if len(validValuesRegion) != 0 {
validValues = validValuesRegion
} else if len(validValuesDomain) != 0 {
validValues = validValuesDomain
}
nonConstrainingOnly = len(validValues) > 0
found = findFloatingPoolCandidate(floatingPools, nil, nil, floatingPoolName, nonConstrainingOnly, validValues, additionalValidValues)
if found != nil {
return found, allErrs
}
validValuesList := []string{}
for key := range validValues {
validValuesList = append(validValuesList, key)
}
for key := range additionalValidValues {
validValuesList = append(validValuesList, key)
}
sort.Strings(validValuesList)
allErrs = append(allErrs, field.NotSupported(fldPath, floatingPoolName, validValuesList))
return nil, allErrs
}
// findFloatingPoolCandidate finds floating pool candidate with optional domain and/or region constraints
func findFloatingPoolCandidate(floatingPools []api.FloatingPool, domain, shootRegion *string, floatingPoolName string,
nonConstrainingOnly bool, validValues, additionalValidValues sets.Set[string]) *api.FloatingPool {
var (
candidate *api.FloatingPool
candidateScore int
)
for _, fp := range floatingPools {
if reflect.DeepEqual(domain, fp.Domain) && reflect.DeepEqual(shootRegion, fp.Region) {
if fp.NonConstraining != nil && *fp.NonConstraining {
additionalValidValues.Insert(fp.Name)
} else {
if nonConstrainingOnly {
continue
}
validValues.Insert(fp.Name)
}
if match, score := utils.SimpleMatch(fp.Name, floatingPoolName); match {
if candidate == nil || candidateScore < score {
f := fp
candidate = &f
candidateScore = score
}
}
}
}
return candidate
}