// Convert JSON to YAML.
func JSONToYAML(j []byte) ([]byte, error) {
// Convert the JSON to an object.
var jsonObj interface{}
err := json.Unmarshal(j, &jsonObj)
if err != nil {
return nil, err
}
// Marshal this object into YAML.
return yaml.Marshal(jsonObj)
}
// WriteToFile serializes the config to yaml and writes it out to a file. If no present, it creates the file with 0644. If it is present
// it stomps the contents
func WriteToFile(config Config, filename string) error {
content, err := yaml.Marshal(config)
if err != nil {
return err
}
err = ioutil.WriteFile(filename, content, 0644)
if err != nil {
return err
}
return nil
}
func ExampleEmptyConfig() {
defaultConfig := NewConfig()
output, err := yaml.Marshal(defaultConfig)
if err != nil {
fmt.Printf("Unexpected error: %v", err)
}
fmt.Printf("%v", string(output))
// Output:
// preferences: {}
// clusters: {}
// users: {}
// contexts: {}
// current-context: ""
}
func ExampleMergingSomeWithConflict() {
commandLineFile, _ := ioutil.TempFile("", "")
defer os.Remove(commandLineFile.Name())
envVarFile, _ := ioutil.TempFile("", "")
defer os.Remove(envVarFile.Name())
WriteToFile(testConfigAlfa, commandLineFile.Name())
WriteToFile(testConfigConflictAlfa, envVarFile.Name())
loadingRules := ClientConfigLoadingRules{
CommandLinePath: commandLineFile.Name(),
EnvVarPath: envVarFile.Name(),
}
mergedConfig, err := loadingRules.Load()
output, err := yaml.Marshal(mergedConfig)
if err != nil {
fmt.Printf("Unexpected error: %v", err)
}
fmt.Printf("%v", string(output))
// Output:
// preferences: {}
// clusters:
// cow-cluster:
// server: http://cow.org:8080
// donkey-cluster:
// server: http://donkey.org:8080
// insecure-skip-tls-verify: true
// users:
// red-user:
// token: red-token
// yellow-user:
// token: yellow-token
// contexts:
// federal-context:
// cluster: cow-cluster
// user: red-user
// namespace: hammer-ns
// current-context: federal-context
}
func ExampleOfOptionsConfig() {
defaultConfig := NewConfig()
defaultConfig.Preferences.Colors = true
defaultConfig.Clusters["alfa"] = Cluster{
Server: "https://alfa.org:8080",
APIVersion: "v1beta2",
InsecureSkipTLSVerify: true,
CertificateAuthority: "path/to/my/cert-ca-filename",
}
defaultConfig.Clusters["bravo"] = Cluster{
Server: "https://bravo.org:8080",
APIVersion: "v1beta1",
InsecureSkipTLSVerify: false,
}
defaultConfig.AuthInfos["black-mage-via-file"] = AuthInfo{
AuthPath: "path/to/my/.kubernetes_auth",
}
defaultConfig.AuthInfos["white-mage-via-cert"] = AuthInfo{
ClientCertificate: "path/to/my/client-cert-filename",
ClientKey: "path/to/my/client-key-filename",
}
defaultConfig.AuthInfos["red-mage-via-token"] = AuthInfo{
Token: "my-secret-token",
}
defaultConfig.Contexts["bravo-as-black-mage"] = Context{
Cluster: "bravo",
AuthInfo: "black-mage-via-file",
Namespace: "yankee",
}
defaultConfig.Contexts["alfa-as-black-mage"] = Context{
Cluster: "alfa",
AuthInfo: "black-mage-via-file",
Namespace: "zulu",
}
defaultConfig.Contexts["alfa-as-white-mage"] = Context{
Cluster: "alfa",
AuthInfo: "white-mage-via-cert",
}
defaultConfig.CurrentContext = "alfa-as-white-mage"
output, err := yaml.Marshal(defaultConfig)
if err != nil {
fmt.Printf("Unexpected error: %v", err)
}
fmt.Printf("%v", string(output))
// Output:
// preferences:
// colors: true
// clusters:
// alfa:
// server: https://alfa.org:8080
// api-version: v1beta2
// insecure-skip-tls-verify: true
// certificate-authority: path/to/my/cert-ca-filename
// bravo:
// server: https://bravo.org:8080
// api-version: v1beta1
// users:
// black-mage-via-file:
// auth-path: path/to/my/.kubernetes_auth
// red-mage-via-token:
// token: my-secret-token
// white-mage-via-cert:
// client-certificate: path/to/my/client-cert-filename
// client-key: path/to/my/client-key-filename
// contexts:
// alfa-as-black-mage:
// cluster: alfa
// user: black-mage-via-file
// namespace: zulu
// alfa-as-white-mage:
// cluster: alfa
// user: white-mage-via-cert
// bravo-as-black-mage:
// cluster: bravo
// user: black-mage-via-file
// namespace: yankee
// current-context: alfa-as-white-mage
}
func ExampleMergingEverythingNoConflicts() {
commandLineFile, _ := ioutil.TempFile("", "")
defer os.Remove(commandLineFile.Name())
envVarFile, _ := ioutil.TempFile("", "")
defer os.Remove(envVarFile.Name())
currentDirFile, _ := ioutil.TempFile("", "")
defer os.Remove(currentDirFile.Name())
homeDirFile, _ := ioutil.TempFile("", "")
defer os.Remove(homeDirFile.Name())
WriteToFile(testConfigAlfa, commandLineFile.Name())
WriteToFile(testConfigBravo, envVarFile.Name())
WriteToFile(testConfigCharlie, currentDirFile.Name())
WriteToFile(testConfigDelta, homeDirFile.Name())
loadingRules := ClientConfigLoadingRules{
CommandLinePath: commandLineFile.Name(),
EnvVarPath: envVarFile.Name(),
CurrentDirectoryPath: currentDirFile.Name(),
HomeDirectoryPath: homeDirFile.Name(),
}
mergedConfig, err := loadingRules.Load()
output, err := yaml.Marshal(mergedConfig)
if err != nil {
fmt.Printf("Unexpected error: %v", err)
}
fmt.Printf("%v", string(output))
// Output:
// preferences: {}
// clusters:
// chicken-cluster:
// server: http://chicken.org:8080
// cow-cluster:
// server: http://cow.org:8080
// horse-cluster:
// server: http://horse.org:8080
// pig-cluster:
// server: http://pig.org:8080
// users:
// black-user:
// token: black-token
// blue-user:
// token: blue-token
// green-user:
// token: green-token
// red-user:
// token: red-token
// contexts:
// federal-context:
// cluster: cow-cluster
// user: red-user
// namespace: hammer-ns
// gothic-context:
// cluster: chicken-cluster
// user: blue-user
// namespace: plane-ns
// queen-anne-context:
// cluster: pig-cluster
// user: black-user
// namespace: saw-ns
// shaker-context:
// cluster: horse-cluster
// user: green-user
// namespace: chisel-ns
// current-context: ""
}