delete secrets the right way (zalando#1054)

* delete secrets the right way

* make a one function

* continue deleting secrets even if one delete fails

Co-authored-by: Felix Kunde <felix.kunde@zalando.de>

Author: FxKu

pkg/cluster/cluster.go

@@ -797,10 +797,8 @@ func (c *Cluster) Delete() {
 		c.logger.Warningf("could not delete statefulset: %v", err)
 	}
 
-	for _, obj := range c.Secrets {
-		if err := c.deleteSecret(obj); err != nil {
-			c.logger.Warningf("could not delete secret: %v", err)
-		}
+	if err := c.deleteSecrets(); err != nil {
+		c.logger.Warningf("could not delete secrets: %v", err)
 	}
 
 	if err := c.deletePodDisruptionBudget(); err != nil {

pkg/cluster/resources.go

@@ -725,17 +725,26 @@ func (c *Cluster) deleteEndpoint(role PostgresRole) error {
 	return nil
 }
 
-func (c *Cluster) deleteSecret(secret *v1.Secret) error {
-	c.setProcessName("deleting secret %q", util.NameFromMeta(secret.ObjectMeta))
-	c.logger.Debugf("deleting secret %q", util.NameFromMeta(secret.ObjectMeta))
-	err := c.KubeClient.Secrets(secret.Namespace).Delete(context.TODO(), secret.Name, c.deleteOptions)
-	if err != nil {
-		return err
+func (c *Cluster) deleteSecrets() error {
+	c.setProcessName("deleting secrets")
+	var errors []string
+	errorCount := 0
+	for uid, secret := range c.Secrets {
+		c.logger.Debugf("deleting secret %q", util.NameFromMeta(secret.ObjectMeta))
+		err := c.KubeClient.Secrets(secret.Namespace).Delete(context.TODO(), secret.Name, c.deleteOptions)
+		if err != nil {
+			errors = append(errors, fmt.Sprintf("could not delete secret %q: %v", util.NameFromMeta(secret.ObjectMeta), err))
+			errorCount++
+		}
+		c.logger.Infof("secret %q has been deleted", util.NameFromMeta(secret.ObjectMeta))
+		c.Secrets[uid] = nil
 	}
-	c.logger.Infof("secret %q has been deleted", util.NameFromMeta(secret.ObjectMeta))
-	delete(c.Secrets, secret.UID)
 
-	return err
+	if errorCount > 0 {
+		return fmt.Errorf("could not delete all secrets: %v", errors)
+	}
+
+	return nil
 }
 
 func (c *Cluster) createRoles() (err error) {