preferring float32 for rate limit QPS param

pkg/cloudprovider/providers/azure/azure.go

@@ -40,7 +40,7 @@ import (
 const (
 	// CloudProviderName is the value used for the --cloud-provider flag
 	CloudProviderName      = "azure"
-	rateLimitQPSDefault    = 1
+	rateLimitQPSDefault    = 1.0
 	rateLimitBucketDefault = 5
 	backoffRetriesDefault  = 6
 	backoffExponentDefault = 1.5
@@ -93,7 +93,7 @@ type Config struct {
 	// Enable rate limiting
 	CloudProviderRateLimit bool `json:"cloudProviderRateLimit" yaml:"cloudProviderRateLimit"`
 	// Rate limit QPS
-	CloudProviderRateLimitQPS int `json:"cloudProviderRateLimitQPS" yaml:"cloudProviderRateLimitQPS"`
+	CloudProviderRateLimitQPS float32 `json:"cloudProviderRateLimitQPS" yaml:"cloudProviderRateLimitQPS"`
 	// Rate limit Bucket Size
 	CloudProviderRateLimitBucket int `json:"cloudProviderRateLimitBucket" yaml:"cloudProviderRateLimitBucket"`
 }
@@ -216,7 +216,7 @@ func NewCloud(configReader io.Reader) (cloudprovider.Interface, error) {
 			az.CloudProviderRateLimitBucket = rateLimitBucketDefault
 		}
 		az.operationPollRateLimiter = flowcontrol.NewTokenBucketRateLimiter(
-			float32(az.CloudProviderRateLimitQPS),
+			az.CloudProviderRateLimitQPS,
 			az.CloudProviderRateLimitBucket)
 		glog.V(2).Infof("Azure cloudprovider using rate limit config: QPS=%d, bucket=%d",
 			az.CloudProviderRateLimitQPS,

pkg/cloudprovider/providers/azure/azure_test.go

@@ -598,7 +598,7 @@ func TestNewCloudFromJSON(t *testing.T) {
 		"cloudProviderBackoffDuration": 5,
 		"cloudProviderBackoffJitter": 1.0,
 		"cloudProviderRatelimit": true,
-		"cloudProviderRateLimitQPS": 1,
+		"cloudProviderRateLimitQPS": 0.5,
 		"cloudProviderRateLimitBucket": 5
 	}`
 	validateConfig(t, config)
@@ -638,7 +638,7 @@ cloudProviderBackoffExponent: 1.5
 cloudProviderBackoffDuration: 5
 cloudProviderBackoffJitter: 1.0
 cloudProviderRatelimit: true
-cloudProviderRateLimitQPS: 1
+cloudProviderRateLimitQPS: 0.5
 cloudProviderRateLimitBucket: 5
 `
 	validateConfig(t, config)
@@ -698,7 +698,7 @@ func validateConfig(t *testing.T, config string) {
 	if azureCloud.CloudProviderRateLimit != true {
 		t.Errorf("got incorrect value for CloudProviderRateLimit")
 	}
-	if azureCloud.CloudProviderRateLimitQPS != 1 {
+	if azureCloud.CloudProviderRateLimitQPS != 0.5 {
 		t.Errorf("got incorrect value for CloudProviderRateLimitQPS")
 	}
 	if azureCloud.CloudProviderRateLimitBucket != 5 {