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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,237 @@ | ||
| /* | ||
| Copyright 2020 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package metrics | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
|
|
||
| "k8s.io/api/networking/v1beta1" | ||
| "k8s.io/ingress-gce/pkg/utils" | ||
| "k8s.io/klog" | ||
| ) | ||
|
|
||
| type feature string | ||
|
|
||
| func (f feature) String() string { | ||
| return string(f) | ||
| } | ||
|
|
||
| const ( | ||
| // WARNING: Please keep the following constants in sync with | ||
| // pkg/annotations/ingress.go | ||
| // allowHTTPKey tells the Ingress controller to allow/block HTTP access. | ||
| allowHTTPKey = "kubernetes.io/ingress.allow-http" | ||
| ingressClassKey = "kubernetes.io/ingress.class" | ||
| gceIngressClass = "gce" | ||
| gceMultiIngressClass = "gce-multi-cluster" | ||
| gceL7ILBIngressClass = "gce-internal" | ||
| // preSharedCertKey represents the specific pre-shared SSL | ||
| // certificate for the Ingress controller to use. | ||
| preSharedCertKey = "ingress.gcp.kubernetes.io/pre-shared-cert" | ||
| managedCertKey = "networking.gke.io/managed-certificates" | ||
| // staticIPKey is the annotation key used by controller to record GCP static ip. | ||
| staticIPKey = "ingress.kubernetes.io/static-ip" | ||
|
|
||
| ingress = feature("Ingress") | ||
| externalIngress = feature("ExternalIngress") | ||
| internalIngress = feature("InternalIngress") | ||
| httpEnabled = feature("HTTPEnabled") | ||
| hostBasedRouting = feature("HostBasedRouting") | ||
| pathBasedRouting = feature("PathBasedRouting") | ||
| tlsTermination = feature("TLSTermination") | ||
| secretBasedCertsForTLS = feature("SecretBasedCertsForTLS") | ||
| preSharedCertsForTLS = feature("PreSharedCertsForTLS") | ||
| managedCertsForTLS = feature("ManagedCertsForTLS") | ||
| staticGlobalIP = feature("StaticGlobalIP") | ||
|
|
||
| servicePort = feature("L7LBServicePort") | ||
| externalServicePort = feature("L7XLBServicePort") | ||
| internalServicePort = feature("L7ILBServicePort") | ||
| neg = feature("NEG") | ||
| cloudCDN = feature("CloudCDN") | ||
| cloudArmor = feature("CloudArmor") | ||
| cloudIAP = feature("CloudIAP") | ||
| backendTimeout = feature("BackendTimeout") | ||
| backendConnectionDraining = feature("BackendConnectionDraining") | ||
| clientIPAffinity = feature("ClientIPAffinity") | ||
| cookieAffinity = feature("CookieAffinity") | ||
| customRequestHeaders = feature("CustomRequestHeaders") | ||
| ) | ||
|
|
||
| // featuresForIngress returns the list of features for given ingress. | ||
| func featuresForIngress(ing *v1beta1.Ingress) []feature { | ||
| features := []feature{ingress} | ||
|
|
||
| ingKey := fmt.Sprintf("%s/%s", ing.Namespace, ing.Name) | ||
| klog.V(4).Infof("Listing features for Ingress %s", ingKey) | ||
| ingAnnotations := ing.Annotations | ||
|
|
||
| // Determine the type of ingress based on ingress class. | ||
| ingClass := ingAnnotations[ingressClassKey] | ||
| klog.V(6).Infof("Ingress class value for ingress %s: %s", ingKey, ingClass) | ||
| switch ingClass { | ||
| case "", gceIngressClass, gceMultiIngressClass: | ||
| features = append(features, externalIngress) | ||
| case gceL7ILBIngressClass: | ||
| features = append(features, internalIngress) | ||
| } | ||
|
|
||
| // Determine if http is enabled. | ||
| if val, ok := ingAnnotations[allowHTTPKey]; !ok { | ||
| klog.V(6).Infof("Annotation %s does not exist for ingress %s", allowHTTPKey, ingKey) | ||
| features = append(features, httpEnabled) | ||
| } else { | ||
| klog.V(6).Infof("User specified value for annotation %s on ingress %s: %s", allowHTTPKey, ingKey, val) | ||
| v, err := strconv.ParseBool(val) | ||
| if err != nil { | ||
| klog.Errorf("Failed to parse %s for annotation %s on ingress %s", val, allowHTTPKey, ingKey) | ||
| } | ||
| if err == nil && v { | ||
| features = append(features, httpEnabled) | ||
| } | ||
| } | ||
|
|
||
| // An ingress without a host or http-path is ignored. | ||
| hostBased, pathBased := false, false | ||
| if len(ing.Spec.Rules) == 0 { | ||
| klog.V(6).Infof("Neither host-based nor path-based routing rules are setup for ingress %s", ingKey) | ||
| } | ||
| for _, rule := range ing.Spec.Rules { | ||
| if rule.HTTP != nil && len(rule.HTTP.Paths) > 0 { | ||
| klog.V(6).Infof("User specified http paths for ingress %s: %v", ingKey, rule.HTTP.Paths) | ||
| pathBased = true | ||
| } | ||
| if rule.Host != "" { | ||
| klog.V(6).Infof("User specified host for ingress %s: %v", ingKey, rule.Host) | ||
| hostBased = true | ||
| } | ||
| if pathBased && hostBased { | ||
| break | ||
| } | ||
| } | ||
| if hostBased { | ||
| features = append(features, hostBasedRouting) | ||
| } | ||
| if pathBased { | ||
| features = append(features, pathBasedRouting) | ||
| } | ||
|
|
||
| // SSL certificate based features. | ||
| sslConfigured := false | ||
| if val, ok := ingAnnotations[preSharedCertKey]; ok { | ||
| klog.V(6).Infof("Specified pre-shared certs for ingress %s: %v", ingKey, val) | ||
| sslConfigured = true | ||
| features = append(features, preSharedCertsForTLS) | ||
| } | ||
| if val, ok := ingAnnotations[managedCertKey]; ok { | ||
| klog.V(6).Infof("Specified google managed certs for ingress %s: %v", ingKey, val) | ||
| sslConfigured = true | ||
| features = append(features, managedCertsForTLS) | ||
| } | ||
| if hasSecretBasedCerts(ing) { | ||
| sslConfigured = true | ||
| features = append(features, secretBasedCertsForTLS) | ||
| } | ||
| if sslConfigured { | ||
| klog.V(6).Infof("TLS termination is configured for ingress %s", ingKey) | ||
| features = append(features, tlsTermination) | ||
| } | ||
|
|
||
| // Both user specified and ingress controller managed global static ips are reported. | ||
| if val, ok := ingAnnotations[staticIPKey]; ok && val != "" { | ||
| klog.V(6).Infof("Specified static for ingress %s: %s", ingKey, val) | ||
| features = append(features, staticGlobalIP) | ||
| } | ||
| klog.V(4).Infof("Features for ingress %s/%s: %v", ing.Namespace, ing.Name, features) | ||
| return features | ||
| } | ||
|
|
||
| // hasSecretBasedCerts returns true if ingress spec contains a secret based cert. | ||
| func hasSecretBasedCerts(ing *v1beta1.Ingress) bool { | ||
| for _, tlsSecret := range ing.Spec.TLS { | ||
| if tlsSecret.SecretName == "" { | ||
| continue | ||
| } | ||
| klog.V(6).Infof("User specified secret for ingress %s/%s: %s", ing.Namespace, ing.Name, tlsSecret.SecretName) | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| // featuresForServicePort returns the list of features for given service port. | ||
| func featuresForServicePort(sp utils.ServicePort) []feature { | ||
| features := []feature{servicePort} | ||
| svcPortKey := newServicePortKey(sp).string() | ||
| klog.V(4).Infof("Listing features for service port %s", svcPortKey) | ||
| if sp.L7ILBEnabled { | ||
| klog.V(6).Infof("L7 ILB is enabled for service port %s", svcPortKey) | ||
| features = append(features, internalServicePort) | ||
| } else { | ||
| features = append(features, externalServicePort) | ||
| } | ||
| if sp.NEGEnabled { | ||
| klog.V(6).Infof("NEG is enabled for service port %s", svcPortKey) | ||
| features = append(features, neg) | ||
| } | ||
| if sp.BackendConfig == nil { | ||
| klog.V(4).Infof("Features for Service port %s: %v", svcPortKey, features) | ||
| return features | ||
| } | ||
|
|
||
| beConfig := fmt.Sprintf("%s/%s", sp.BackendConfig.Namespace, sp.BackendConfig.Name) | ||
| klog.V(6).Infof("Backend config specified for service port %s: %s", svcPortKey, beConfig) | ||
|
|
||
| if sp.BackendConfig.Spec.Cdn != nil && sp.BackendConfig.Spec.Cdn.Enabled { | ||
| klog.V(6).Infof("Cloud CDN is enabled for service port %s", svcPortKey) | ||
| features = append(features, cloudCDN) | ||
| } | ||
| if sp.BackendConfig.Spec.Iap != nil && sp.BackendConfig.Spec.Iap.Enabled { | ||
| klog.V(6).Infof("Cloud IAP is enabled for service port %s", svcPortKey) | ||
| features = append(features, cloudIAP) | ||
| } | ||
| // Possible list of Affinity types: | ||
| // NONE, CLIENT_IP, GENERATED_COOKIE, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO. | ||
| if sp.BackendConfig.Spec.SessionAffinity != nil { | ||
| affinityType := sp.BackendConfig.Spec.SessionAffinity.AffinityType | ||
| switch affinityType { | ||
| case "GENERATED_COOKIE": | ||
| features = append(features, cookieAffinity) | ||
| case "CLIENT_IP", "CLIENT_IP_PROTO", "CLIENT_IP_PORT_PROTO": | ||
| features = append(features, clientIPAffinity) | ||
| } | ||
| klog.V(6).Infof("Session affinity %s is configured for service port %s", affinityType, svcPortKey) | ||
| } | ||
| if sp.BackendConfig.Spec.SecurityPolicy != nil { | ||
| klog.V(6).Infof("Security policy %s is configured for service port %s", sp.BackendConfig.Spec.SecurityPolicy, svcPortKey) | ||
| features = append(features, cloudArmor) | ||
| } | ||
| if sp.BackendConfig.Spec.TimeoutSec != nil { | ||
| klog.V(6).Infof("Backend timeout(%v secs) is configured for service port %s", sp.BackendConfig.Spec.TimeoutSec, svcPortKey) | ||
| features = append(features, backendTimeout) | ||
| } | ||
| if sp.BackendConfig.Spec.ConnectionDraining != nil { | ||
| klog.V(6).Infof("Backend connection draining(%v secs) is configured for service port %s", sp.BackendConfig.Spec.ConnectionDraining.DrainingTimeoutSec, svcPortKey) | ||
| features = append(features, backendConnectionDraining) | ||
| } | ||
| if sp.BackendConfig.Spec.CustomRequestHeaders != nil { | ||
| klog.V(6).Infof("Custom request headers configured for service port %s: %v", svcPortKey, sp.BackendConfig.Spec.CustomRequestHeaders.Headers) | ||
| features = append(features, customRequestHeaders) | ||
| } | ||
| klog.V(4).Infof("Features for Service port %s: %v", svcPortKey, features) | ||
| return features | ||
| } |
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