/
dest_namespaces.go
243 lines (207 loc) · 6.5 KB
/
dest_namespaces.go
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package backend
import (
"context"
"fmt"
mirrorsv1alpha2 "github.com/ktsstudio/mirrors/api/v1alpha2"
"github.com/ktsstudio/mirrors/pkg/metrics"
"github.com/ktsstudio/mirrors/pkg/nskeeper"
"github.com/ktsstudio/mirrors/pkg/reconresult"
"github.com/panjf2000/ants/v2"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/sync/errgroup"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/record"
"regexp"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
"sync"
)
type NamespacesDest struct {
client.Client
record.EventRecorder
mirror *mirrorsv1alpha2.SecretMirror
nsKeeper *nskeeper.NSKeeper
pool *ants.Pool
}
func (d *NamespacesDest) Setup(ctx context.Context) error {
_ = ctx
if err := d.registerNamespaces(); err != nil {
return err
}
return nil
}
func (d *NamespacesDest) Sync(ctx context.Context, secret *v1.Secret) error {
wg := &sync.WaitGroup{}
g := &errgroup.Group{}
destNamespaces := d.getDestinationNamespaces()
for _, ns := range destNamespaces {
ns := ns
wg.Add(1)
if err := d.pool.Submit(func() {
g.Go(func() error {
defer wg.Done()
return d.syncOneToNamespace(ctx, secret, types.NamespacedName{
Namespace: ns,
Name: d.mirror.Spec.Source.Name,
})
})
}); err != nil {
return err
}
}
wg.Wait()
if err := g.Wait(); err != nil {
return &reconresult.ReconcileResult{
Message: fmt.Sprintf("unable to sync some objects: %s", err),
Status: mirrorsv1alpha2.MirrorStatusError,
EventType: v1.EventTypeWarning,
EventReason: "SyncError",
}
}
metrics.MirrorNSCurrentCount.With(prometheus.Labels{
"mirror": getPrettyName(d.mirror),
"source_type": string(d.mirror.Spec.Source.Type),
}).Set(float64(len(destNamespaces)))
return nil
}
func (d *NamespacesDest) registerNamespaces() error {
if len(d.mirror.Spec.Destination.Namespaces) > 0 {
regexps := make([]*regexp.Regexp, 0, len(d.mirror.Spec.Destination.Namespaces))
for _, regexRaw := range d.mirror.Spec.Destination.Namespaces {
regex, err := regexp.Compile(regexRaw)
if err != nil {
return err
}
regexps = append(regexps, regex)
}
d.nsKeeper.RegisterNamespaceRegex(types.NamespacedName{
Namespace: d.mirror.Namespace,
Name: d.mirror.Name,
}, regexps)
}
return nil
}
func (d *NamespacesDest) syncOneToNamespace(ctx context.Context, secret *v1.Secret, dest types.NamespacedName) error {
logger := log.FromContext(ctx)
destSecret, err := FetchSecret(ctx, d, dest)
if err != nil {
return err
}
if !d.validateAnnotations(ctx, destSecret) {
return nil
}
doCreate := false
if destSecret == nil {
// secret does not exist yet
destSecret = &v1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: dest.Name,
Namespace: dest.Namespace,
Labels: make(map[string]string),
Annotations: make(map[string]string),
},
Type: secret.Type,
}
doCreate = true
}
if !secretDiffer(secret, destSecret) {
logger.Info(fmt.Sprintf("secrets %s/%s and %s/%s are identical",
secret.Namespace, secret.Name, destSecret.Namespace, destSecret.Name))
return nil
}
copySecret(secret, destSecret)
destSecret.Annotations[ownedByMirrorAnnotation] = d.getManagedByMirrorValue()
destSecret.Annotations[lastSyncAnnotation] = metav1.Now().String()
destSecret.Annotations[parentVersionAnnotation] = secret.ResourceVersion
destSecret.Annotations[sourceTypeAnnotation] = string(d.mirror.Spec.Source.Type)
if d.mirror.Spec.Source.Type == mirrorsv1alpha2.SourceTypeVault {
destSecret.Annotations[vaultPathAnnotation] = d.mirror.Spec.Source.Vault.Path
if d.mirror.Status.VaultSource != nil {
destSecret.Annotations[vaultLeaseIdAnnotation] = d.mirror.Status.VaultSource.LeaseID
destSecret.Annotations[vaultLeaseDurationAnnotation] = fmt.Sprintf("%d", d.mirror.Status.VaultSource.LeaseDuration)
}
}
if doCreate {
if err := d.Create(ctx, destSecret); err != nil {
logger.Error(err, "unable to create own secret for SecretMirror", "secret", destSecret)
return err
}
} else {
if err := d.Update(ctx, destSecret); err != nil {
logger.Error(err, "unable to update dest secret for SecretMirror", "secret", destSecret)
return err
}
}
logger.Info(fmt.Sprintf("successfully mirrored secret %s/%s to %s/%s",
secret.Namespace, secret.Name, destSecret.Namespace, destSecret.Name))
return nil
}
func (d *NamespacesDest) getDestinationNamespaces() []string {
return d.nsKeeper.FindMatchingNamespaces(types.NamespacedName{
Namespace: d.mirror.Namespace,
Name: d.mirror.Name,
})
}
func (d *NamespacesDest) validateAnnotations(ctx context.Context, secret *v1.Secret) bool {
if secret == nil {
return true
}
logger := log.FromContext(ctx)
value := secret.Annotations[ownedByMirrorAnnotation]
managedByMirrorValue := d.getManagedByMirrorValue()
if value == managedByMirrorValue {
return true
}
logger.Info(
fmt.Sprintf("secret %s/%s found but is not managed by SecretMirror %s/%s",
secret.Namespace,
secret.Name,
d.mirror.Namespace,
d.mirror.Name,
),
)
return false
}
func (d *NamespacesDest) getManagedByMirrorValue() string {
return getManagedByMirrorValue(d.mirror.Namespace, d.mirror.Name)
}
func (d *NamespacesDest) Cleanup(ctx context.Context) error {
namespaces := d.getDestinationNamespaces()
d.nsKeeper.DeregisterNamespaceRegex(types.NamespacedName{
Namespace: d.mirror.Namespace,
Name: d.mirror.Name,
})
for _, ns := range namespaces {
if err := d.deleteOneSecret(ctx, types.NamespacedName{
Namespace: ns,
Name: d.mirror.Spec.Source.Name,
}); err != nil {
return err
}
}
return nil
}
func (d *NamespacesDest) deleteOneSecret(ctx context.Context, name types.NamespacedName) error {
logger := log.FromContext(ctx)
var secret v1.Secret
if err := d.Get(ctx, name, &secret); err != nil {
return client.IgnoreNotFound(err)
}
if d.mirror.Spec.DeletePolicy == mirrorsv1alpha2.DeletePolicyDelete {
correctValue := d.getManagedByMirrorValue()
if val, ok := secret.Annotations[ownedByMirrorAnnotation]; !ok || val != correctValue {
logger.Info(fmt.Sprintf("secret %s/%s is not managed by SecretMirror %s",
secret.Namespace, secret.Name, correctValue))
return nil
}
if err := d.Delete(ctx, &secret); err != nil {
return client.IgnoreNotFound(err)
}
logger.Info(fmt.Sprintf("deleted secret %s/%s", secret.Namespace, secret.Name))
} else {
logger.Info(fmt.Sprintf("retaining secret %s/%s", secret.Namespace, secret.Name))
}
return nil
}