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string_validators.go
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/
string_validators.go
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package validators
import (
"fmt"
"strings"
"github.com/hashicorp/terraform/helper/schema"
)
// StringIsOneOf creates a validator for Terraform schema values that ensures the supplied value is one of the specified strings.
func StringIsOneOf(valueDescription string, permittedValues ...string) schema.SchemaValidateFunc {
permittedValuesDescription := strings.Join(permittedValues, ", ")
return func(value interface{}, key string) (warnings []string, errors []error) {
stringValue := value.(string)
for _, permittedValue := range permittedValues {
if stringValue == permittedValue {
return
}
}
errors = append(errors, fmt.Errorf("invalid %s '%s' (valid values are [%s])",
valueDescription,
stringValue,
permittedValuesDescription,
))
return
}
}
// StringIsOneOfCaseInsensitive creates a validator for Terraform schema values that ensures the supplied value is one of the specified strings (case-insensitive).
func StringIsOneOfCaseInsensitive(valueDescription string, permittedValues ...string) schema.SchemaValidateFunc {
upperPermittedValues := make([]string, len(permittedValues))
for index, permittedValue := range permittedValues {
upperPermittedValues[index] = strings.ToUpper(permittedValue)
}
permittedValuesDescription := strings.Join(permittedValues, ", ")
return func(value interface{}, key string) (warnings []string, errors []error) {
stringValue := value.(string)
upperStringValue := strings.ToUpper(stringValue)
for _, upperPermittedValue := range upperPermittedValues {
if upperStringValue == upperPermittedValue {
return
}
}
errors = append(errors, fmt.Errorf("invalid %s '%s' (valid values are [%s])",
valueDescription,
stringValue,
permittedValuesDescription,
))
return
}
}