github.com/midokura/kubeedge@v1.2.0-mido.0/tests/e2e/utils/config.go (about) 1 /* 2 Copyright 2019 The KubeEdge Authors. 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 utils 17 18 import ( 19 "encoding/json" 20 "math/rand" 21 "os" 22 "path/filepath" 23 "time" 24 ) 25 26 const letterBytes = "abcdefghijklmnopqrstuvwxyz0123456789" 27 28 type vmSpec struct { 29 Ip string `json:"ip"` 30 Username string `json:"username"` 31 Passwd string `json:"password"` 32 } 33 34 //config.json decode struct 35 type Config struct { 36 AppImageUrl []string `json:"image_url"` 37 K8SMasterForKubeEdge string `json:"k8smasterforkubeedge"` 38 Nodes map[string]vmSpec `json:"k8snodes"` 39 NumOfNodes int `json:"node_num"` 40 ImageRepo string `json:"imagerepo"` 41 K8SMasterForProvisionEdgeNodes string `json:"k8smasterforprovisionedgenodes"` 42 CloudImageUrl string `json:"cloudimageurl"` 43 EdgeImageUrl string `json:"edgeimageurl"` 44 Namespace string `json:"namespace"` 45 ControllerStubPort int `json:"controllerstubport"` 46 Protocol string `json:"protocol"` 47 DockerHubUserName string `json:"dockerhubusername"` 48 DockerHubPassword string `json:"dockerhubpassword"` 49 MqttEndpoint string `json:"mqttendpoint"` 50 KubeConfigPath string `json:"kubeconfigpath"` 51 } 52 53 //config struct 54 var config *Config 55 56 //get config.json path 57 func LoadConfig() Config { 58 if config == nil { 59 config = loadConfigJsonFromPath() 60 } 61 return *config 62 } 63 64 //loadConfigJsonFromPath reads the test configuration and builds a Config object. 65 func loadConfigJsonFromPath() *Config { 66 path := getConfigPath() 67 _, err := filepath.Abs(filepath.Dir(path)) 68 if err != nil { 69 Infof("Failed to get Abs path: %v", err) 70 panic(err) 71 } 72 var config *Config = &Config{} 73 configFile, err := os.Open(path) 74 if err != nil { 75 panic(err) 76 } 77 decoder := json.NewDecoder(configFile) 78 err = decoder.Decode(config) 79 if err != nil { 80 panic(err) 81 } 82 return config 83 } 84 85 //getConfigPath returns the configuration path provided in the env var name. In case the env var is not 86 //set, the default configuration path is returned 87 func getConfigPath() string { 88 path := os.Getenv("TESTCONFIG") 89 if path == "" { 90 path = "config.json" 91 } 92 return path 93 } 94 95 func RandomInt(min, max int) int { 96 return min + rand.Intn(max-min) 97 } 98 99 //function to Generate Random string 100 func GetRandomString(length int) string { 101 str := "0123456789abcdefghijklmnopqrstuvwxyz" 102 bytes := []byte(str) 103 result := []byte{} 104 r := rand.New(rand.NewSource(time.Now().UnixNano())) 105 for i := 0; i < length; i++ { 106 result = append(result, bytes[r.Intn(len(bytes))]) 107 } 108 return string(result) 109 }