refactor code structure (#1738)

pkg/simple/client/monitoring/prometheus_options.go

@@ -0,0 +1,41 @@
+package monitoring
+
+import (
+    "github.com/spf13/pflag"
+)
+
+type Options struct {
+    Endpoint          string `json:"endpoint,omitempty" yaml:"endpoint"`
+    SecondaryEndpoint string `json:"secondaryEndpoint,omitempty" yaml:"secondaryEndpoint"`
+}
+
+func NewPrometheusOptions() *Options {
+    return &Options{
+        Endpoint:          "",
+        SecondaryEndpoint: "",
+    }
+}
+
+func (s *Options) Validate() []error {
+    var errs []error
+    return errs
+}
+
+func (s *Options) ApplyTo(options *Options) {
+    if s.Endpoint != "" {
+        options.Endpoint = s.Endpoint
+    }
+
+    if s.SecondaryEndpoint != "" {
+        options.SecondaryEndpoint = s.SecondaryEndpoint
+    }
+}
+
+func (s *Options) AddFlags(fs *pflag.FlagSet, c *Options) {
+    fs.StringVar(&s.Endpoint, "prometheus-endpoint", c.Endpoint, ""+
+        "Prometheus service endpoint which stores KubeSphere monitoring data, if left "+
+        "blank, will use builtin metrics-server as data source.")
+
+    fs.StringVar(&s.SecondaryEndpoint, "prometheus-secondary-endpoint", c.SecondaryEndpoint, ""+
+        "Prometheus secondary service endpoint, if left empty and endpoint is set, will use endpoint instead.")
+}