github.com/deemoprobe/k8s-first-commit@v0.0.0-20230430165612-a541f1982be3/pkg/registry/service_registry.go (about) 1 /* 2 Copyright 2014 Google Inc. All rights reserved. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 package registry 17 18 import ( 19 "encoding/json" 20 "net/url" 21 "strconv" 22 "strings" 23 24 . "github.com/GoogleCloudPlatform/kubernetes/pkg/api" 25 "github.com/GoogleCloudPlatform/kubernetes/pkg/apiserver" 26 ) 27 28 type ServiceRegistry interface { 29 ListServices() (ServiceList, error) 30 CreateService(svc Service) error 31 GetService(name string) (*Service, error) 32 DeleteService(name string) error 33 UpdateService(svc Service) error 34 UpdateEndpoints(e Endpoints) error 35 } 36 37 type ServiceRegistryStorage struct { 38 registry ServiceRegistry 39 } 40 41 func MakeServiceRegistryStorage(registry ServiceRegistry) apiserver.RESTStorage { 42 return &ServiceRegistryStorage{registry: registry} 43 } 44 45 // GetServiceEnvironmentVariables populates a list of environment variables that are use 46 // in the container environment to get access to services. 47 func GetServiceEnvironmentVariables(registry ServiceRegistry, machine string) ([]EnvVar, error) { 48 var result []EnvVar 49 services, err := registry.ListServices() 50 if err != nil { 51 return result, err 52 } 53 for _, service := range services.Items { 54 name := strings.ToUpper(service.ID) + "_SERVICE_PORT" 55 value := strconv.Itoa(service.Port) 56 result = append(result, EnvVar{Name: name, Value: value}) 57 } 58 result = append(result, EnvVar{Name: "SERVICE_HOST", Value: machine}) 59 return result, nil 60 } 61 62 func (sr *ServiceRegistryStorage) List(*url.URL) (interface{}, error) { 63 return sr.registry.ListServices() 64 } 65 66 func (sr *ServiceRegistryStorage) Get(id string) (interface{}, error) { 67 return sr.registry.GetService(id) 68 } 69 70 func (sr *ServiceRegistryStorage) Delete(id string) error { 71 return sr.registry.DeleteService(id) 72 } 73 74 func (sr *ServiceRegistryStorage) Extract(body string) (interface{}, error) { 75 var svc Service 76 err := json.Unmarshal([]byte(body), &svc) 77 return svc, err 78 } 79 80 func (sr *ServiceRegistryStorage) Create(obj interface{}) error { 81 return sr.registry.CreateService(obj.(Service)) 82 } 83 84 func (sr *ServiceRegistryStorage) Update(obj interface{}) error { 85 return sr.registry.UpdateService(obj.(Service)) 86 }