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environment.go
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environment.go
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package environment
import (
"context"
"fmt"
"github.com/equinor/radix-common/utils/slice"
"github.com/equinor/radix-operator/pkg/apis/defaults"
"github.com/equinor/radix-operator/pkg/apis/defaults/k8s"
"github.com/equinor/radix-operator/pkg/apis/kube"
"github.com/equinor/radix-operator/pkg/apis/networkpolicy"
v1 "github.com/equinor/radix-operator/pkg/apis/radix/v1"
"github.com/equinor/radix-operator/pkg/apis/utils"
radixlabels "github.com/equinor/radix-operator/pkg/apis/utils/labels"
radixclient "github.com/equinor/radix-operator/pkg/client/clientset/versioned"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
)
// Environment is the aggregate-root for manipulating RadixEnvironments
type Environment struct {
kubeclient kubernetes.Interface
radixclient radixclient.Interface
kubeutil *kube.Kube
config *v1.RadixEnvironment
regConfig *v1.RadixRegistration
appConfig *v1.RadixApplication
logger zerolog.Logger
networkPolicy *networkpolicy.NetworkPolicy
}
// NewEnvironment is the constructor for Environment
func NewEnvironment(
kubeclient kubernetes.Interface,
kubeutil *kube.Kube,
radixclient radixclient.Interface,
config *v1.RadixEnvironment,
regConfig *v1.RadixRegistration,
appConfig *v1.RadixApplication,
networkPolicy *networkpolicy.NetworkPolicy) (Environment, error) {
return Environment{
kubeclient: kubeclient,
radixclient: radixclient,
kubeutil: kubeutil,
config: config,
regConfig: regConfig,
appConfig: appConfig,
networkPolicy: networkPolicy,
logger: log.Logger.With().Str("resource_kind", v1.KindRadixEnvironment).Str("resource_name", cache.MetaObjectToName(&config.ObjectMeta).String()).Logger(),
}, nil
}
// OnSync is called by the handler when changes are applied and must be
// reconciled with current state.
func (env *Environment) OnSync(ctx context.Context, time metav1.Time) error {
re := env.config
if re.ObjectMeta.DeletionTimestamp != nil {
return env.handleDeletedRadixEnvironment(ctx, re)
}
if env.regConfig == nil {
return nil // RadixRegistration does not exist, possible it was deleted
}
// create a globally unique namespace name
namespaceName := utils.GetEnvironmentNamespace(re.Spec.AppName, re.Spec.EnvName)
if err := env.ApplyNamespace(ctx, namespaceName); err != nil {
return fmt.Errorf("failed to apply namespace %s: %w", namespaceName, err)
}
if err := env.ApplyAdGroupRoleBinding(ctx, namespaceName); err != nil {
return fmt.Errorf("failed to apply RBAC on namespace %s: %w", namespaceName, err)
}
if err := env.applyRadixTektonEnvRoleBinding(ctx, namespaceName); err != nil {
return fmt.Errorf("failed to apply RBAC for radix-tekton-env on namespace %s: %w", namespaceName, err)
}
if err := env.ApplyRadixPipelineRunnerRoleBinding(ctx, namespaceName); err != nil {
return fmt.Errorf("failed to apply RBAC for radix-pipeline-runner on namespace %s: %w", namespaceName, err)
}
if err := env.ApplyLimitRange(ctx, namespaceName); err != nil {
return fmt.Errorf("failed to apply limit range on namespace %s: %w", namespaceName, err)
}
if err := env.networkPolicy.UpdateEnvEgressRules(ctx, re.Spec.Egress.Rules, re.Spec.Egress.AllowRadix, re.Spec.EnvName); err != nil {
return fmt.Errorf("failed to add egress rules in %s, environment %s: %w", re.Spec.AppName, re.Spec.EnvName, err)
}
return env.syncStatus(ctx, re, time)
}
func (env *Environment) handleDeletedRadixEnvironment(ctx context.Context, re *v1.RadixEnvironment) error {
env.logger.Debug().Msgf("Handle deleted RadixEnvironment %s in the application %s", re.Name, re.Spec.AppName)
finalizerIndex := slice.FindIndex(re.ObjectMeta.Finalizers, func(val string) bool {
return val == kube.RadixEnvironmentFinalizer
})
if finalizerIndex < 0 {
env.logger.Info().Msgf("Missing finalizer %s in the Radix environment %s in the application %s. Exist finalizers: %d. Skip dependency handling",
kube.RadixEnvironmentFinalizer, re.Name, re.Spec.AppName, len(re.ObjectMeta.Finalizers))
return nil
}
if err := env.handleDeletedRadixEnvironmentDependencies(ctx, re); err != nil {
return err
}
updatingRE, err := env.radixclient.RadixV1().RadixEnvironments().Get(ctx, re.GetName(), metav1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
return nil
}
return err
}
updatingRE.ObjectMeta.Finalizers = append(re.ObjectMeta.Finalizers[:finalizerIndex], re.ObjectMeta.Finalizers[finalizerIndex+1:]...)
env.logger.Debug().Msgf("Removed finalizer %s from the Radix environment %s in the application %s. Left finalizers: %d",
kube.RadixEnvironmentFinalizer, updatingRE.Name, updatingRE.Spec.AppName, len(updatingRE.ObjectMeta.Finalizers))
updated, err := env.kubeutil.UpdateRadixEnvironment(ctx, updatingRE)
if err != nil {
return err
}
env.logger.Debug().Msgf("Updated RadixEnvironment %s revision %s", re.Name, updated.GetResourceVersion())
return nil
}
func (env *Environment) handleDeletedRadixEnvironmentDependencies(ctx context.Context, re *v1.RadixEnvironment) error {
radixDNSAliasList, err := env.kubeutil.GetRadixDNSAliasWithSelector(ctx, radixlabels.Merge(radixlabels.ForApplicationName(re.Spec.AppName), radixlabels.ForEnvironmentName(re.Spec.EnvName)).String())
if err != nil {
return err
}
env.logger.Debug().Msgf("delete %d RadixDNSAlias(es)", len(radixDNSAliasList.Items))
dnsAliases := slice.Reduce(radixDNSAliasList.Items, []*v1.RadixDNSAlias{}, func(acc []*v1.RadixDNSAlias, radixDNSAlias v1.RadixDNSAlias) []*v1.RadixDNSAlias {
return append(acc, &radixDNSAlias)
})
return env.kubeutil.DeleteRadixDNSAliases(ctx, dnsAliases...)
}
// ApplyNamespace sets up namespace metadata and applies configuration to kubernetes
func (env *Environment) ApplyNamespace(ctx context.Context, name string) error {
// get key to use for namespace annotation to pick up private image hubs
imagehubKey := fmt.Sprintf("%s-sync", defaults.PrivateImageHubSecretName)
nsLabels := labels.Set{
"sync": "cluster-wildcard-tls-cert",
"cluster-wildcard-sync": "cluster-wildcard-tls-cert", // redundant, can be removed
"app-wildcard-sync": "app-wildcard-tls-cert", // redundant, can be removed
"active-cluster-wildcard-sync": "active-cluster-wildcard-tls-cert", // redundant, can be removed
"radix-wildcard-sync": "radix-wildcard-tls-cert",
imagehubKey: env.config.Spec.AppName,
kube.RadixAppLabel: env.config.Spec.AppName,
kube.RadixEnvLabel: env.config.Spec.EnvName,
}
nsLabels = labels.Merge(nsLabels, kube.NewEnvNamespacePodSecurityStandardFromEnv().Labels())
return env.kubeutil.ApplyNamespace(ctx, name, nsLabels, env.AsOwnerReference())
}
// ApplyAdGroupRoleBinding grants access to environment namespace
func (env *Environment) ApplyAdGroupRoleBinding(ctx context.Context, namespace string) error {
adGroups, err := utils.GetAdGroups(env.regConfig)
if err != nil {
return err
}
adminSubjects := kube.GetRoleBindingGroups(adGroups)
adminRoleBinding := kube.GetRolebindingToClusterRoleForSubjects(env.config.Spec.AppName, defaults.AppAdminEnvironmentRoleName, adminSubjects)
adminRoleBinding.SetOwnerReferences(env.AsOwnerReference())
readerAdGroups := env.regConfig.Spec.ReaderAdGroups
readerSubjects := kube.GetRoleBindingGroups(readerAdGroups)
readerRoleBinding := kube.GetRolebindingToClusterRoleForSubjects(env.config.Spec.AppName, defaults.AppReaderEnvironmentsRoleName, readerSubjects)
readerRoleBinding.SetOwnerReferences(env.AsOwnerReference())
for _, roleBinding := range []*rbacv1.RoleBinding{adminRoleBinding, readerRoleBinding} {
err = env.kubeutil.ApplyRoleBinding(ctx, namespace, roleBinding)
if err != nil {
return err
}
}
return nil
}
func (env *Environment) applyRadixTektonEnvRoleBinding(ctx context.Context, namespace string) error {
roleBinding := &rbacv1.RoleBinding{
TypeMeta: metav1.TypeMeta{
APIVersion: rbacv1.SchemeGroupVersion.Identifier(),
Kind: k8s.KindRoleBinding,
},
ObjectMeta: metav1.ObjectMeta{
Name: defaults.RadixTektonEnvRoleName,
Labels: map[string]string{
kube.RadixAppLabel: env.config.Spec.AppName,
},
},
RoleRef: rbacv1.RoleRef{
APIGroup: rbacv1.GroupName,
Kind: k8s.KindClusterRole,
Name: defaults.RadixTektonEnvRoleName,
},
Subjects: []rbacv1.Subject{
{
Kind: rbacv1.ServiceAccountKind,
Name: defaults.RadixTektonServiceAccountName,
Namespace: utils.GetAppNamespace(env.config.Spec.AppName),
},
},
}
roleBinding.SetOwnerReferences(env.AsOwnerReference())
return env.kubeutil.ApplyRoleBinding(ctx, namespace, roleBinding)
}
func (env *Environment) ApplyRadixPipelineRunnerRoleBinding(ctx context.Context, namespace string) error {
roleBinding := &rbacv1.RoleBinding{
TypeMeta: metav1.TypeMeta{
APIVersion: rbacv1.SchemeGroupVersion.Identifier(),
Kind: k8s.KindRoleBinding,
},
ObjectMeta: metav1.ObjectMeta{
Name: defaults.PipelineEnvRoleName,
Labels: map[string]string{
kube.RadixAppLabel: env.config.Spec.AppName,
},
},
RoleRef: rbacv1.RoleRef{
APIGroup: rbacv1.GroupName,
Kind: k8s.KindClusterRole,
Name: defaults.PipelineEnvRoleName,
},
Subjects: []rbacv1.Subject{
{
Kind: rbacv1.ServiceAccountKind,
Name: defaults.PipelineServiceAccountName,
Namespace: utils.GetAppNamespace(env.config.Spec.AppName),
},
},
}
roleBinding.SetOwnerReferences(env.AsOwnerReference())
return env.kubeutil.ApplyRoleBinding(ctx, namespace, roleBinding)
}
const limitRangeName = "mem-cpu-limit-range-env"
// ApplyLimitRange sets resource usage limits to provided namespace
func (env *Environment) ApplyLimitRange(ctx context.Context, namespace string) error {
defaultMemoryLimit := defaults.GetDefaultMemoryLimit()
defaultCPURequest := defaults.GetDefaultCPURequest()
defaultMemoryRequest := defaults.GetDefaultMemoryRequest()
// if not all limits are defined, then don't put any limits on namespace
if defaultMemoryLimit == nil ||
defaultCPURequest == nil ||
defaultMemoryRequest == nil {
env.logger.Warn().Msgf("Not all limits are defined for the Operator, so no limitrange will be put on namespace %s", namespace)
return nil
}
limitRange := env.kubeutil.BuildLimitRange(namespace, limitRangeName, env.config.Spec.AppName, defaultMemoryLimit, defaultCPURequest, defaultMemoryRequest)
limitRange.SetOwnerReferences(env.AsOwnerReference())
return env.kubeutil.ApplyLimitRange(ctx, namespace, limitRange)
}
// AsOwnerReference creates an OwnerReference to this environment object
func (env *Environment) AsOwnerReference() []metav1.OwnerReference {
trueVar := true
return []metav1.OwnerReference{
{
APIVersion: v1.SchemeGroupVersion.Identifier(),
Kind: v1.KindRadixEnvironment,
Name: env.config.Name,
UID: env.config.UID,
Controller: &trueVar,
},
}
}
func (env *Environment) GetConfig() *v1.RadixEnvironment {
return env.config
}
func existsInAppConfig(app *v1.RadixApplication, envName string) bool {
if app == nil {
return false
}
for _, appEnv := range app.Spec.Environments {
if appEnv.Name == envName {
return true
}
}
return false
}