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Add tests for controller getEndpoints
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,127 @@ | ||
| /* | ||
| Copyright 2018 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. | ||
| */ | ||
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| package controller | ||
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| import ( | ||
| "fmt" | ||
| "net" | ||
| "reflect" | ||
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| "github.com/golang/glog" | ||
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| corev1 "k8s.io/api/core/v1" | ||
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| "k8s.io/ingress-nginx/internal/ingress" | ||
| "k8s.io/ingress-nginx/internal/ingress/annotations/healthcheck" | ||
| ) | ||
|
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| // getEndpoints returns a list of <endpoint ip>:<port> for a given service/target port combination. | ||
| func getEndpoints( | ||
| s *corev1.Service, | ||
| port *corev1.ServicePort, | ||
| proto corev1.Protocol, | ||
| hz *healthcheck.Config, | ||
| getServiceEndpoints func(*corev1.Service) (*corev1.Endpoints, error), | ||
| ) []ingress.Endpoint { | ||
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| upsServers := []ingress.Endpoint{} | ||
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| if s == nil || port == nil { | ||
| return upsServers | ||
| } | ||
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| // avoid duplicated upstream servers when the service | ||
| // contains multiple port definitions sharing the same | ||
| // targetport. | ||
| adus := make(map[string]bool) | ||
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| // ExternalName services | ||
| if s.Spec.Type == corev1.ServiceTypeExternalName { | ||
| glog.V(3).Infof("Ingress using a service %v of type=ExternalName : %v", s.Name) | ||
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| targetPort := port.TargetPort.IntValue() | ||
| // check for invalid port value | ||
| if targetPort <= 0 { | ||
| glog.Errorf("ExternalName service with an invalid port: %v", targetPort) | ||
| return upsServers | ||
| } | ||
|
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| if net.ParseIP(s.Spec.ExternalName) == nil { | ||
| _, err := net.LookupHost(s.Spec.ExternalName) | ||
| if err != nil { | ||
| glog.Errorf("unexpected error resolving host %v: %v", s.Spec.ExternalName, err) | ||
| return upsServers | ||
| } | ||
| } | ||
|
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| return append(upsServers, ingress.Endpoint{ | ||
| Address: s.Spec.ExternalName, | ||
| Port: fmt.Sprintf("%v", targetPort), | ||
| MaxFails: hz.MaxFails, | ||
| FailTimeout: hz.FailTimeout, | ||
| }) | ||
| } | ||
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| glog.V(3).Infof("getting endpoints for service %v/%v and port %v", s.Namespace, s.Name, port.String()) | ||
| ep, err := getServiceEndpoints(s) | ||
| if err != nil { | ||
| glog.Warningf("unexpected error obtaining service endpoints: %v", err) | ||
| return upsServers | ||
| } | ||
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| for _, ss := range ep.Subsets { | ||
| for _, epPort := range ss.Ports { | ||
|
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| if !reflect.DeepEqual(epPort.Protocol, proto) { | ||
| continue | ||
| } | ||
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| var targetPort int32 | ||
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| if port.Name == "" { | ||
| // port.Name is optional if there is only one port | ||
| targetPort = epPort.Port | ||
| } else if port.Name == epPort.Name { | ||
| targetPort = epPort.Port | ||
| } | ||
|
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| // check for invalid port value | ||
| if targetPort <= 0 { | ||
| continue | ||
| } | ||
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| for _, epAddress := range ss.Addresses { | ||
| ep := fmt.Sprintf("%v:%v", epAddress.IP, targetPort) | ||
| if _, exists := adus[ep]; exists { | ||
| continue | ||
| } | ||
| ups := ingress.Endpoint{ | ||
| Address: epAddress.IP, | ||
| Port: fmt.Sprintf("%v", targetPort), | ||
| MaxFails: hz.MaxFails, | ||
| FailTimeout: hz.FailTimeout, | ||
| Target: epAddress.TargetRef, | ||
| } | ||
| upsServers = append(upsServers, ups) | ||
| adus[ep] = true | ||
| } | ||
| } | ||
| } | ||
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| glog.V(3).Infof("endpoints found: %v", upsServers) | ||
| return upsServers | ||
| } |
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