add cloud-region-providers climc command

cmd/climc/shell/cloudregions.go

@@ -59,6 +59,24 @@ func init() {
 		return nil
 	})
 
+	R(&CloudregionCityListOptions{}, "cloud-region-providers", "List cities where cloud region resides", func(s *mcclient.ClientSession, args *CloudregionCityListOptions) error {
+		params, err := options.StructToParams(args)
+		if err != nil {
+			return err
+		}
+		results, err := modules.Cloudregions.GetRegionProviders(s, params)
+		if err != nil {
+			return err
+		}
+		listResult := modules.ListResult{}
+		listResult.Data, err = results.GetArray()
+		if err != nil {
+			return err
+		}
+		printList(&listResult, nil)
+		return nil
+	})
+
 	type CloudregionCreateOptions struct {
 		Id          string  `help:"ID of the region"`
 		NAME        string  `help:"Name of the region"`

pkg/mcclient/modules/mod_cloudregions.go

@@ -15,23 +15,23 @@ var (
 	Cloudregions SCloudregionManager
 )
 
-type sCityCounter struct {
-	City    string
-	Regions int
+type sNameCounter struct {
+	Name  string
+	Count int
 }
 
-type cityCounters []sCityCounter
+type cityCounters []sNameCounter
 
 func (cc cityCounters) Len() int      { return len(cc) }
 func (cc cityCounters) Swap(i, j int) { cc[i], cc[j] = cc[j], cc[i] }
 func (cc cityCounters) Less(i, j int) bool {
-	if cc[i].Regions != cc[j].Regions {
-		return cc[i].Regions > cc[j].Regions
+	if cc[i].Count != cc[j].Count {
+		return cc[i].Count > cc[j].Count
 	}
-	return cc[i].City < cc[j].City
+	return cc[i].Name < cc[j].Name
 }
 
-func (this *SCloudregionManager) GetRegionCities(session *mcclient.ClientSession, params jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+func (this *SCloudregionManager) getRegionAttributeList(session *mcclient.ClientSession, params jsonutils.JSONObject, attr string) (jsonutils.JSONObject, error) {
 	paramsDict := params.(*jsonutils.JSONDict)
 	paramsDict.Set("limit", jsonutils.NewInt(0))
 
@@ -42,7 +42,7 @@ func (this *SCloudregionManager) GetRegionCities(session *mcclient.ClientSession
 
 	cities := make(map[string]int)
 	for i := range listResult.Data {
-		cityStr, _ := listResult.Data[i].GetString("city")
+		cityStr, _ := listResult.Data[i].GetString(attr)
 		if len(cityStr) > 0 {
 			if _, ok := cities[cityStr]; ok {
 				cities[cityStr] += 1
@@ -52,10 +52,10 @@ func (this *SCloudregionManager) GetRegionCities(session *mcclient.ClientSession
 		}
 	}
 
-	cityList := make([]sCityCounter, len(cities))
+	cityList := make([]sNameCounter, len(cities))
 	i := 0
 	for k, v := range cities {
-		cityList[i] = sCityCounter{City: k, Regions: v}
+		cityList[i] = sNameCounter{Name: k, Count: v}
 		i += 1
 	}
 
@@ -64,6 +64,14 @@ func (this *SCloudregionManager) GetRegionCities(session *mcclient.ClientSession
 	return jsonutils.Marshal(cityList), nil
 }
 
+func (this *SCloudregionManager) GetRegionCities(session *mcclient.ClientSession, params jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+	return this.getRegionAttributeList(session, params, "city")
+}
+
+func (this *SCloudregionManager) GetRegionProviders(session *mcclient.ClientSession, params jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+	return this.getRegionAttributeList(session, params, "provider")
+}
+
 func init() {
 	Cloudregions = SCloudregionManager{
 		NewComputeManager("cloudregion", "cloudregions",