Fill out Pricing Source Api for Azure provider for rate card api

pkg/cloud/azureprovider.go

@@ -382,6 +382,7 @@ type Azure struct {
 	Clientset               clustercache.ClusterCache
 	Config                  *ProviderConfig
 	ServiceAccountChecks    map[string]*ServiceAccountCheck
+	RateCardPricingStatus   string
 }
 
 type azureKey struct {
@@ -731,6 +732,7 @@ func (az *Azure) DownloadPricingData() error {
 
 	config, err := az.GetConfig()
 	if err != nil {
+		az.RateCardPricingStatus = err.Error()
 		return err
 	}
 
@@ -747,6 +749,7 @@ func (az *Azure) DownloadPricingData() error {
 		credentialsConfig := auth.NewClientCredentialsConfig(config.AzureClientID, config.AzureClientSecret, config.AzureTenantID)
 		a, err := credentialsConfig.Authorizer()
 		if err != nil {
+			az.RateCardPricingStatus = err.Error()
 			return err
 		}
 		authorizer = a
@@ -758,6 +761,7 @@ func (az *Azure) DownloadPricingData() error {
 		if err != nil { // Failed to create authorizer from environment, try from file
 			a, err := auth.NewAuthorizerFromFile(azure.PublicCloud.ResourceManagerEndpoint)
 			if err != nil {
+				az.RateCardPricingStatus = err.Error()
 				return err
 			}
 			authorizer = a
@@ -784,19 +788,17 @@ func (az *Azure) DownloadPricingData() error {
 	klog.Infof("Using ratecard query %s", rateCardFilter)
 	result, err := rcClient.Get(context.TODO(), rateCardFilter)
 	if err != nil {
+		az.RateCardPricingStatus = err.Error()
 		return err
 	}
 	allPrices := make(map[string]*AzurePricing)
 	regions, err := getRegions("compute", sClient, providersClient, config.AzureSubscriptionID)
 	if err != nil {
+		az.RateCardPricingStatus = err.Error()
 		return err
 	}
 
-	c, err := az.GetConfig()
-	if err != nil {
-		return err
-	}
-	baseCPUPrice := c.CPU
+	baseCPUPrice := config.CPU
 
 	for _, v := range *result.Meters {
 		meterName := *v.MeterName
@@ -915,6 +917,7 @@ func (az *Azure) DownloadPricingData() error {
 	}
 
 	az.Pricing = allPrices
+	az.RateCardPricingStatus = ""
 	return nil
 }
 
@@ -1379,8 +1382,25 @@ func (az *Azure) ServiceAccountStatus() *ServiceAccountStatus {
 	}
 }
 
+const rateCardPricingSource = "Rate Card API"
+
+// PricingSourceStatus returns the status of the rate card api
 func (az *Azure) PricingSourceStatus() map[string]*PricingSource {
-	return make(map[string]*PricingSource)
+	sources := make(map[string]*PricingSource)
+	rcps := &PricingSource {
+		Name: rateCardPricingSource,
+		Error: az.RateCardPricingStatus,
+	}
+	if rcps.Error != "" {
+		rcps.Available = false
+	} else if len(az.Pricing) == 0 {
+		rcps.Error = "No Pricing Data Available"
+		rcps.Available = false
+	}else {
+		rcps.Available = true
+	}
+	sources[rateCardPricingSource] = rcps
+	return sources
 }
 
 func (*Azure) ClusterManagementPricing() (string, float64, error) {