[WIP] logging refactor (#1794)

* refactor logging

Signed-off-by: huanggze <loganhuang@yunify.com>

* refactor logging

Signed-off-by: huanggze <loganhuang@yunify.com>

pkg/kapis/logging/v1alpha2/helper.go

@@ -0,0 +1,56 @@
+package v1alpha2
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/klog"
+	"kubesphere.io/kubesphere/pkg/constants"
+	"kubesphere.io/kubesphere/pkg/utils/stringutils"
+	"strings"
+	"time"
+)
+
+func (h handler) intersect(nsFilter []string, nsSearch []string, wsFilter []string, wsSearch []string) map[string]time.Time {
+	nsList, err := h.k.Kubernetes().CoreV1().Namespaces().List(v1.ListOptions{})
+	if err != nil {
+		klog.Errorf("failed to list namespace, error: %s", err)
+		return nil
+	}
+
+	inner := make(map[string]time.Time)
+
+	// if no search condition is set on both namespace and workspace,
+	// then return all namespaces
+	if nsSearch == nil && nsFilter == nil && wsSearch == nil && wsFilter == nil {
+		for _, ns := range nsList.Items {
+			inner[ns.Name] = ns.CreationTimestamp.Time
+		}
+	} else {
+		for _, ns := range nsList.Items {
+			if stringutils.StringIn(ns.Name, nsFilter) ||
+				stringutils.StringIn(ns.Annotations[constants.WorkspaceLabelKey], wsFilter) ||
+				containsIn(ns.Name, nsSearch) ||
+				containsIn(ns.Annotations[constants.WorkspaceLabelKey], wsSearch) {
+				inner[ns.Name] = ns.CreationTimestamp.Time
+			}
+		}
+	}
+
+	return inner
+}
+
+func containsIn(str string, subStrs []string) bool {
+	for _, sub := range subStrs {
+		if strings.Contains(str, sub) {
+			return true
+		}
+	}
+	return false
+}
+
+func (h handler) withCreationTime(name string) map[string]time.Time {
+	ns, err := h.k.Kubernetes().CoreV1().Namespaces().Get(name, v1.GetOptions{})
+	if err == nil {
+		return map[string]time.Time{name: ns.CreationTimestamp.Time}
+	}
+	return nil
+}