func generateK8sEventNamespaceFilter()

in pkg/source/gcp/task/gke/k8s_event/query.go [39:72]
34 lines of code
13 McCabe index (conditional complexity)

func generateK8sEventNamespaceFilter(filter *queryutil.SetFilterParseResult) string {
	if filter.ValidationError != "" {
		return fmt.Sprintf(`-- Failed to generate namespace filter due to the validation error "%s"`, filter.ValidationError)
	}
	if filter.SubtractMode {
		return "-- Unsupported operation"
	} else {
		hasClusterScope := slices.Contains(filter.Additives, "#cluster-scoped")
		hasNamespacedScope := slices.Contains(filter.Additives, "#namespaced")
		if hasClusterScope && hasNamespacedScope {
			return "-- No namespace filter"
		}
		if !hasClusterScope && hasNamespacedScope {
			return `jsonPayload.involvedObject.namespace:"" -- ignore events in k8s object with namespace`
		}
		if hasClusterScope && !hasNamespacedScope {
			if len(filter.Additives) == 1 {
				return `-jsonPayload.involvedObject.namespace:"" -- ignore events in k8s object with namespace`
			}
			namespaceContains := []string{}
			for _, additive := range filter.Additives {
				if strings.HasPrefix(additive, "#") {
					continue
				}
				namespaceContains = append(namespaceContains, additive)
			}
			return fmt.Sprintf(`(jsonPayload.involvedObject.namespace=(%s) OR NOT (jsonPayload.involvedObject.namespace:""))`, strings.Join(namespaceContains, " OR "))
		}
		if len(filter.Additives) == 0 {
			return `-- Invalid: none of the resources will be selected. Ignoreing namespace filter.`
		}
		return fmt.Sprintf(`jsonPayload.involvedObject.namespace=(%s)`, strings.Join(filter.Additives, " OR "))
	}
}