Merge pull request kubevirt#270 from qinqon/add-creation-pool-interfa…

…ce-timeout

lb: Add creation polling timeout

README.md

@@ -42,7 +42,8 @@ Output:
 ```yaml
 kubeconfig: <infraKubeConfigPath>
 loadBalancer:
-  creationPollInterval: 30
+  creationPollInterval: 5
+  creationPollTimeout: 60
 ```
 
 ## How to build a Docker image

config/default/cloud-config

@@ -1,3 +1,4 @@
 loadBalancer:
-  creationPollInterval: 30
+  creationPollInterval: 5
+  creationPollTimeout: 60
 namespace: kvcluster

config/isolated/cloud-config

@@ -1,5 +1,6 @@
 loadBalancer:
-  creationPollInterval: 30
+  creationPollInterval: 5
+  creationPollTimeout: 60
 namespace: kvcluster
 instancesV2:
   enabled: true

pkg/provider/cloud.go

@@ -13,6 +13,7 @@ import (
 	"k8s.io/client-go/tools/clientcmd"
 	cloudprovider "k8s.io/cloud-provider"
 	"k8s.io/klog/v2"
+	"k8s.io/utils/pointer"
 	kubevirtv1 "kubevirt.io/api/core/v1"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
@@ -51,8 +52,12 @@ type CloudConfig struct {
 type LoadBalancerConfig struct {
 	// Enabled activates the load balancer interface of the CCM
 	Enabled bool `yaml:"enabled"`
-	// CreationPollInterval determines how many seconds to wait for the load balancer creation
-	CreationPollInterval int `yaml:"creationPollInterval"`
+
+	// CreationPollInterval determines how many seconds to wait for the load balancer creation between retries
+	CreationPollInterval *int `yaml:"creationPollInterval,omitempty"`
+
+	// CreationPollTimeout determines how many seconds to wait for the load balancer creation
+	CreationPollTimeout *int `yaml:"creationPollTimeout,omitempty"`
 }
 
 type InstancesV2Config struct {
@@ -68,7 +73,8 @@ func createDefaultCloudConfig() CloudConfig {
 	return CloudConfig{
 		LoadBalancer: LoadBalancerConfig{
 			Enabled:              true,
-			CreationPollInterval: defaultLoadBalancerCreatePollInterval,
+			CreationPollInterval: pointer.Int(int(defaultLoadBalancerCreatePollInterval.Seconds())),
+			CreationPollTimeout:  pointer.Int(int(defaultLoadBalancerCreatePollTimeout.Seconds())),
 		},
 		InstancesV2: InstancesV2Config{
 			Enabled:              true,

pkg/provider/cloud_test.go

@@ -14,20 +14,21 @@ var (
 	ns                  = "aNamespace"
 	infraKubeConfigPath = "infraKubeConfig"
 	minimalConf         = fmt.Sprintf("kubeconfig: %s", infraKubeConfigPath)
-	loadbalancerConf    = fmt.Sprintf("kubeconfig: %s\nloadBalancer:\n  enabled: %t\n  creationPollInterval: %d", infraKubeConfigPath, false, 3)
+	loadbalancerConf    = fmt.Sprintf("kubeconfig: %s\nloadBalancer:\n  enabled: %t\n  creationPollInterval: %d\n  creationPollTimeout: %d", infraKubeConfigPath, false, 3, 100)
 	instancesConf       = fmt.Sprintf("kubeconfig: %s\ninstancesV2:\n  enabled: %t\n  enableInstanceTypes: %t", infraKubeConfigPath, false, true)
 	zoneAndRegionConf   = fmt.Sprintf("kubeconfig: %s\ninstancesV2:\n  zoneAndRegionEnabled: %t\n  enableInstanceTypes: %t", infraKubeConfigPath, false, true)
 	namespaceConf       = fmt.Sprintf("kubeconfig: %s\nnamespace: %s", infraKubeConfigPath, ns)
 	allConf             = fmt.Sprintf("kubeconfig: %s\nloadBalancer:\n  enabled: %t\ninstancesV2:\n  enabled: %t\nnamespace: %s", infraKubeConfigPath, false, false, ns)
 	invalidKubeconf     = "bla"
 )
 
-func makeCloudConfig(kubeconfig, namespace string, loadbalancerEnabled, instancesEnabled bool, zoneAndRegionEnabled bool, lbCreationPollInterval int) CloudConfig {
+func makeCloudConfig(kubeconfig, namespace string, loadbalancerEnabled, instancesEnabled bool, zoneAndRegionEnabled bool, lbCreationPollInterval int, lbCreationPollTimeout int) CloudConfig {
 	return CloudConfig{
 		Kubeconfig: kubeconfig,
 		LoadBalancer: LoadBalancerConfig{
 			Enabled:              loadbalancerEnabled,
-			CreationPollInterval: lbCreationPollInterval,
+			CreationPollInterval: &lbCreationPollInterval,
+			CreationPollTimeout:  &lbCreationPollTimeout,
 		},
 		InstancesV2: InstancesV2Config{
 			Enabled:              instancesEnabled,
@@ -44,12 +45,12 @@ var _ = Describe("Cloud config", func() {
 		Expect(config).To(Equal(expectedCloudConfig))
 		Expect(err).To(BeNil())
 	},
-		Entry("With minimal configuration", minimalConf, makeCloudConfig(infraKubeConfigPath, "", true, true, true, 5), nil),
-		Entry("With loadBalancer configuration", loadbalancerConf, makeCloudConfig(infraKubeConfigPath, "", false, true, true, 3), nil),
-		Entry("With instance configuration", instancesConf, makeCloudConfig(infraKubeConfigPath, "", true, false, true, 5), nil),
-		Entry("With zone and region configuration", zoneAndRegionConf, makeCloudConfig(infraKubeConfigPath, "", true, true, false, 5), nil),
-		Entry("With namespace configuration", namespaceConf, makeCloudConfig(infraKubeConfigPath, ns, true, true, true, 5), nil),
-		Entry("With full configuration", allConf, makeCloudConfig(infraKubeConfigPath, ns, false, false, true, 5), nil),
+		Entry("With minimal configuration", minimalConf, makeCloudConfig(infraKubeConfigPath, "", true, true, true, 5, 300), nil),
+		Entry("With loadBalancer configuration", loadbalancerConf, makeCloudConfig(infraKubeConfigPath, "", false, true, true, 3, 100), nil),
+		Entry("With instance configuration", instancesConf, makeCloudConfig(infraKubeConfigPath, "", true, false, true, 5, 300), nil),
+		Entry("With zone and region configuration", zoneAndRegionConf, makeCloudConfig(infraKubeConfigPath, "", true, true, false, 5, 300), nil),
+		Entry("With namespace configuration", namespaceConf, makeCloudConfig(infraKubeConfigPath, ns, true, true, true, 5, 300), nil),
+		Entry("With full configuration", allConf, makeCloudConfig(infraKubeConfigPath, ns, false, false, true, 5, 300), nil),
 	)
 
 	Describe("KubeVirt Cloud Factory", func() {

pkg/provider/loadbalancer.go

@@ -16,8 +16,11 @@ import (
 )
 
 const (
-	// Default interval in seconds between polling the service after creation
-	defaultLoadBalancerCreatePollInterval = 5
+	// Default interval between polling the service after creation
+	defaultLoadBalancerCreatePollInterval = 5 * time.Second
+
+	// Default timeout between polling the service after creation
+	defaultLoadBalancerCreatePollTimeout = 5 * time.Minute
 )
 
 type loadbalancer struct {
@@ -92,7 +95,7 @@ func (lb *loadbalancer) EnsureLoadBalancer(ctx context.Context, clusterName stri
 		return nil, err
 	}
 
-	err = wait.PollUntil(lb.getLoadBalancerCreatePollInterval()*time.Second, func() (bool, error) {
+	err = wait.PollWithContext(ctx, lb.getLoadBalancerCreatePollInterval(), lb.getLoadBalancerCreatePollTimeout(), func(ctx context.Context) (bool, error) {
 		if len(lbService.Status.LoadBalancer.Ingress) != 0 {
 			return true, nil
 		}
@@ -107,7 +110,7 @@ func (lb *loadbalancer) EnsureLoadBalancer(ctx context.Context, clusterName stri
 			return true, nil
 		}
 		return false, nil
-	}, ctx.Done())
+	})
 	if err != nil {
 		klog.Errorf("Failed to poll LoadBalancer service: %v", err)
 		return nil, err
@@ -232,9 +235,22 @@ func (lb *loadbalancer) createLoadBalancerServicePorts(service *corev1.Service)
 }
 
 func (lb *loadbalancer) getLoadBalancerCreatePollInterval() time.Duration {
-	if lb.config.CreationPollInterval > 0 {
-		return time.Duration(lb.config.CreationPollInterval)
+	return convertLoadBalancerCreatePollConfig(lb.config.CreationPollInterval, defaultLoadBalancerCreatePollInterval, "interval")
+}
+
+func (lb *loadbalancer) getLoadBalancerCreatePollTimeout() time.Duration {
+	return convertLoadBalancerCreatePollConfig(lb.config.CreationPollTimeout, defaultLoadBalancerCreatePollTimeout, "timeout")
+}
+
+func convertLoadBalancerCreatePollConfig(configValue *int, defaultValue time.Duration, name string) time.Duration {
+	if configValue == nil {
+		klog.Infof("Setting creation poll %s to default value '%d'", name, defaultValue)
+		return defaultValue
+	}
+	if *configValue <= 0 {
+		klog.Infof("Creation poll %s %d' must be > 0. Setting to '%d'", name, *configValue, defaultValue)
+		return defaultValue
 	}
-	klog.Infof("Creation poll interval '%d' must be > 0. Setting to '%d'", lb.config.CreationPollInterval, defaultLoadBalancerCreatePollInterval)
-	return defaultLoadBalancerCreatePollInterval
+	return time.Duration(*configValue) * time.Second
+
 }

pkg/provider/loadbalancer_test.go

@@ -16,6 +16,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/intstr"
+	"k8s.io/utils/pointer"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
@@ -251,7 +252,8 @@ var _ = Describe("LoadBalancer", func() {
 				namespace: "test",
 				client:    c,
 				config: LoadBalancerConfig{
-					CreationPollInterval: 1,
+					CreationPollInterval: pointer.Int(1),
+					CreationPollTimeout:  pointer.Int(5),
 				},
 			}
 
@@ -673,9 +675,9 @@ var _ = Describe("LoadBalancer", func() {
 			Expect(err).Should(Equal(expectedError))
 		})
 
-		It("Should return an error if polling LoadBalancer service 20-time fails", func() {
+		It("Should return an error if polling LoadBalancer service fails but success before timeout", func() {
 			expectedError := errors.New("Test error - poll Service")
-			getCount := 20
+			getCount := *lb.config.CreationPollTimeout / *lb.config.CreationPollInterval
 			port := 30001
 			infraServiceExist := generateInfraService(
 				tenantService,
@@ -735,6 +737,39 @@ var _ = Describe("LoadBalancer", func() {
 			ctrl.Finish()
 		})
 
+		It("Should return an error if polling LoadBalancer returns no IPs after some time", func() {
+			expectedError := errors.New("timed out waiting for the condition")
+
+			c.EXPECT().
+				Get(ctx, client.ObjectKey{Name: "af6ebf1722bb111e9b210d663bd873d9", Namespace: "test"}, gomock.AssignableToTypeOf(&corev1.Service{})).
+				Return(notFoundErr)
+
+			infraService1 := generateInfraService(
+				tenantService,
+				[]corev1.ServicePort{
+					{Name: "port1", Protocol: corev1.ProtocolTCP, Port: 80, TargetPort: intstr.IntOrString{Type: intstr.Int, IntVal: 30001}},
+				},
+			)
+
+			c.EXPECT().Create(ctx, infraService1)
+
+			infraService2 := infraService1.DeepCopy()
+			c.EXPECT().Get(
+				ctx,
+				client.ObjectKey{Name: "af6ebf1722bb111e9b210d663bd873d9", Namespace: "test"},
+				gomock.AssignableToTypeOf(&corev1.Service{}),
+			).Do(func(ctx context.Context, key client.ObjectKey, obj client.Object, opts ...client.GetOption) {
+				infraService2.DeepCopyInto(obj.(*corev1.Service))
+			}).AnyTimes()
+
+			_, err := lb.EnsureLoadBalancer(ctx, clusterName, tenantService, nodes)
+			Expect(err).Should(MatchError(expectedError))
+		})
+
+		AfterAll(func() {
+			ctrl.Finish()
+		})
+
 	})
 
 	Context("With updating loadbalancer", Ordered, func() {
@@ -757,7 +792,7 @@ var _ = Describe("LoadBalancer", func() {
 				namespace: "test",
 				client:    c,
 				config: LoadBalancerConfig{
-					CreationPollInterval: 1,
+					CreationPollInterval: pointer.Int(1),
 				},
 			}
 
@@ -1011,7 +1046,7 @@ var _ = Describe("LoadBalancer", func() {
 				namespace: "test",
 				client:    c,
 				config: LoadBalancerConfig{
-					CreationPollInterval: 1,
+					CreationPollInterval: pointer.Int(1),
 				},
 			}