Provide annotations to exclude reloading resources (#764)

* Provide annotations to exclude reloading resources

* update test case

* undo commented tests

* remove sleep

Author: LochanRn

internal/pkg/handler/upgrade.go

@@ -199,13 +199,34 @@ func PerformAction(clients kube.Clients, config util.Config, upgradeFuncs callba
 		searchAnnotationValue, foundSearchAnn := annotations[options.AutoSearchAnnotation]
 		reloaderEnabledValue, foundAuto := annotations[options.ReloaderAutoAnnotation]
 		typedAutoAnnotationEnabledValue, foundTypedAuto := annotations[config.TypedAutoAnnotation]
+		excludeConfigmapAnnotationValue, foundExcludeConfigmap := annotations[options.ConfigmapExcludeReloaderAnnotation]
+		excludeSecretAnnotationValue, foundExcludeSecret := annotations[options.SecretExcludeReloaderAnnotation]
+
 		if !found && !foundAuto && !foundTypedAuto && !foundSearchAnn {
 			annotations = upgradeFuncs.PodAnnotationsFunc(i)
 			annotationValue = annotations[config.Annotation]
 			searchAnnotationValue = annotations[options.AutoSearchAnnotation]
 			reloaderEnabledValue = annotations[options.ReloaderAutoAnnotation]
 			typedAutoAnnotationEnabledValue = annotations[config.TypedAutoAnnotation]
 		}
+
+		isResourceExcluded := false
+
+		switch config.Type {
+		case constants.ConfigmapEnvVarPostfix:
+			if foundExcludeConfigmap {
+				isResourceExcluded = checkIfResourceIsExcluded(config.ResourceName, excludeConfigmapAnnotationValue)
+			}
+		case constants.SecretEnvVarPostfix:
+			if foundExcludeSecret {
+				isResourceExcluded = checkIfResourceIsExcluded(config.ResourceName, excludeSecretAnnotationValue)
+			}
+		}
+
+		if isResourceExcluded {
+			continue
+		}
+
 		result := constants.NotUpdated
 		reloaderEnabled, _ := strconv.ParseBool(reloaderEnabledValue)
 		typedAutoAnnotationEnabled, _ := strconv.ParseBool(typedAutoAnnotationEnabledValue)
@@ -275,6 +296,21 @@ func PerformAction(clients kube.Clients, config util.Config, upgradeFuncs callba
 	return nil
 }
 
+func checkIfResourceIsExcluded(resourceName, excludedResources string) bool {
+	if excludedResources == "" {
+		return false
+	}
+
+	excludedResourcesList := strings.Split(excludedResources, ",")
+	for _, excludedResource := range excludedResourcesList {
+		if strings.TrimSpace(excludedResource) == resourceName {
+			return true
+		}
+	}
+
+	return false
+}
+
 func getVolumeMountName(volumes []v1.Volume, mountType string, volumeName string) string {
 	for i := range volumes {
 		if mountType == constants.ConfigmapEnvVarPostfix {