[WIP] logging refactor (#1794)

* refactor logging

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

* refactor logging

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

pkg/models/logging/logging.go

@@ -0,0 +1,41 @@
+package logging
+
+import (
+	"io"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
+	"kubesphere.io/kubesphere/pkg/simple/client/logging"
+)
+
+type LoggingOperator interface {
+	GetCurrentStats(sf logging.SearchFilter) (v1alpha2.APIResponse, error)
+	CountLogsByInterval(sf logging.SearchFilter, interval string) (v1alpha2.APIResponse, error)
+	ExportLogs(sf logging.SearchFilter, w io.Writer) error
+	SearchLogs(sf logging.SearchFilter, from, size int64, order string) (v1alpha2.APIResponse, error)
+}
+
+type loggingOperator struct {
+	c logging.Interface
+}
+
+func NewLoggingOperator(client logging.Interface) LoggingOperator {
+	return &loggingOperator{client}
+}
+
+func (l loggingOperator) GetCurrentStats(sf logging.SearchFilter) (v1alpha2.APIResponse, error) {
+	res, err := l.c.GetCurrentStats(sf)
+	return v1alpha2.APIResponse{Statistics: &res}, err
+}
+
+func (l loggingOperator) CountLogsByInterval(sf logging.SearchFilter, interval string) (v1alpha2.APIResponse, error) {
+	res, err := l.c.CountLogsByInterval(sf, interval)
+	return v1alpha2.APIResponse{Histogram: &res}, err
+}
+
+func (l loggingOperator) ExportLogs(sf logging.SearchFilter, w io.Writer) error {
+	return l.c.ExportLogs(sf, w)
+}
+
+func (l loggingOperator) SearchLogs(sf logging.SearchFilter, from, size int64, order string) (v1alpha2.APIResponse, error) {
+	res, err := l.c.SearchLogs(sf, from, size, order)
+	return v1alpha2.APIResponse{Logs: &res}, err
+}