func sliceOrEmptyVal(yamlMap generic.Map, key string, errs *ManifestErrors) *[]string {
if !yamlMap.Has(key) {
return new([]string)
}
var (
stringSlice []string
err error
)
errMsg := fmt.Sprintf("Expected %s to be a list of strings.", key)
switch input := yamlMap.Get(key).(type) {
case []interface{}:
for _, value := range input {
stringValue, ok := value.(string)
if !ok {
err = errors.New(errMsg)
break
}
stringSlice = append(stringSlice, stringValue)
}
default:
err = errors.New(errMsg)
}
if err != nil {
*errs = append(*errs, err)
return nil
}
return &stringSlice
}
func mapToAppSet(basePath string, data generic.Map) (appSet []models.AppParams, errs ManifestErrors) {
if data.Has("applications") {
appMaps, ok := data.Get("applications").([]interface{})
if !ok {
errs = append(errs, errors.New("Expected applications to be a list"))
return
}
// we delete applications so that we may merge top level app params into each app
data.Delete("applications")
for _, appData := range appMaps {
if !generic.IsMappable(appData) {
errs = append(errs, errors.New("Expected application to be a dictionary"))
continue
}
appMap := generic.DeepMerge(data, generic.NewMap(appData))
appParams, appErrs := mapToAppParams(basePath, appMap)
if !appErrs.Empty() {
errs = append(errs, appErrs)
continue
}
appSet = append(appSet, appParams)
}
}
return
}
func (m Manifest) getAppMaps(data generic.Map) (apps []generic.Map, errs []error) {
globalProperties := data.Except([]interface{}{"applications"})
if data.Has("applications") {
appMaps, ok := data.Get("applications").([]interface{})
if !ok {
errs = append(errs, errors.New("Expected applications to be a list"))
return
}
for _, appData := range appMaps {
if !generic.IsMappable(appData) {
errs = append(errs, errors.New(fmt.Sprintf("Expected application to be a list of key/value pairs\nError occurred in manifest near:\n'%s'", appData)))
continue
}
appMap := generic.DeepMerge(globalProperties, generic.NewMap(appData))
apps = append(apps, appMap)
}
} else {
apps = append(apps, globalProperties)
}
return
}
func stringOrNullVal(yamlMap generic.Map, key string, errs *ManifestErrors) *string {
if !yamlMap.Has(key) {
return nil
}
switch val := yamlMap.Get(key).(type) {
case string:
return &val
case nil:
empty := ""
return &empty
default:
*errs = append(*errs, errors.New(fmt.Sprintf("%s must be a string or null value", key)))
return nil
}
}
func mapToAppParams(yamlMap generic.Map) (appParams cf.AppParams, errs ManifestErrors) {
appParams = cf.NewEmptyAppParams()
errs = checkForNulls(yamlMap)
if !errs.Empty() {
return
}
for key, handler := range manifestKeys {
if yamlMap.Has(key) {
handler(appParams, yamlMap, key, &errs)
}
}
return
}
func stringValOrDefault(yamlMap generic.Map, key string, errs *[]error) *string {
if !yamlMap.Has(key) {
return nil
}
empty := ""
switch val := yamlMap.Get(key).(type) {
case string:
if val == "default" {
return &empty
} else {
return &val
}
case nil:
return &empty
default:
*errs = append(*errs, errors.NewWithFmt("%s must be a string or null value", key))
return nil
}
}
func servicesOrEmptyVal(yamlMap generic.Map, key string, errs *ManifestErrors) (*[]string, *[]map[string]string) {
if !yamlMap.Has(key) {
return new([]string), new([]map[string]string)
}
var (
stringSlice []string
mapSlice []map[string]string
err error
)
errMsg := fmt.Sprintf("Expected %s to be a list of strings.", key)
switch input := yamlMap.Get(key).(type) {
case []map[interface{}]interface{}:
for _, mapValue := range input {
stringMap := map[string]string{}
for key, value := range mapValue {
stringMap[key.(string)] = value.(string)
}
mapSlice = append(mapSlice, stringMap)
}
case []interface{}:
for _, value := range input {
stringValue, ok := value.(string)
if !ok {
err = errors.New(errMsg)
break
}
stringSlice = append(stringSlice, stringValue)
}
default:
err = errors.New(errMsg)
}
if err != nil {
*errs = append(*errs, err)
return nil, nil
}
return &stringSlice, &mapSlice
}
func setEnvVarOrEmptyMap(appMap, yamlMap generic.Map, key string, errs *ManifestErrors) {
if !yamlMap.Has(key) {
appMap.Set(key, generic.NewMap())
return
}
envVars := yamlMap.Get(key)
if !generic.IsMappable(envVars) {
*errs = append(*errs, errors.New(fmt.Sprintf("Expected %s to be a set of key => value.", key)))
return
}
merrs := validateEnvVars(envVars)
if merrs != nil {
*errs = append(*errs, merrs)
return
}
appMap.Set(key, generic.NewMap(envVars))
}
func mapToAppParams(yamlMap generic.Map) (appParams cf.AppParams, errs ManifestErrors) {
appParams = cf.NewEmptyAppParams()
errs = checkForNulls(yamlMap)
if !errs.Empty() {
return
}
for _, key := range []string{"buildpack", "command", "disk_quota", "domain", "host", "name", "path", "stack", "no-route"} {
if yamlMap.Has(key) {
setStringVal(appParams, key, yamlMap.Get(key), &errs)
}
}
if yamlMap.Has("memory") {
memory, err := formatters.ToMegabytes(yamlMap.Get("memory").(string))
if err != nil {
errs = append(errs, errors.New(fmt.Sprintf("Unexpected value for app memory:\n%s", err.Error())))
return
}
appParams.Set("memory", memory)
}
if yamlMap.Has("timeout") {
setIntVal(appParams, "health_check_timeout", yamlMap.Get("timeout"), &errs)
}
if yamlMap.Has("instances") {
setIntVal(appParams, "instances", yamlMap.Get("instances"), &errs)
}
if yamlMap.Has("services") {
setStringSlice(appParams, "services", yamlMap.Get("services"), &errs)
} else {
appParams.Set("services", []string{})
}
if yamlMap.Has("env") {
setEnvVar(appParams, yamlMap.Get("env"), &errs)
} else {
appParams.Set("env", generic.NewMap())
}
return
}