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package config
import (
"fmt"
"regexp"
"strings"
)
// TODO(spox): match back up with waypoint validation implementation
// once we actually get proper configuration going
func (c *Config) Validate() error {
return nil
}
// ValidateLabels validates a set of labels. This ensures that labels are
// set according to our requirements:
//
// * key and value length can't be greater than 255 characters each
// * keys must be in hostname format (RFC 952)
// * keys can't be prefixed with "waypoint/" which is reserved for system use
//
func ValidateLabels(labels map[string]string) []error {
var errs []error
for k, v := range labels {
name := fmt.Sprintf("label[%s]", k)
if strings.HasPrefix(k, "waypoint/") {
errs = append(errs, fmt.Errorf("%s: prefix 'waypoint/' is reserved for system use", name))
}
if len(k) > 255 {
errs = append(errs, fmt.Errorf("%s: key must be less than or equal to 255 characters", name))
}
if !hostnameRegexRFC952.MatchString(strings.SplitN(k, "/", 2)[0]) {
errs = append(errs, fmt.Errorf("%s: key before '/' must be a valid hostname (RFC 952)", name))
}
if len(v) > 255 {
errs = append(errs, fmt.Errorf("%s: value must be less than or equal to 255 characters", name))
}
}
return errs
}
var hostnameRegexRFC952 = regexp.MustCompile(`^[a-zA-Z]([a-zA-Z0-9\-]+[\.]?)*[a-zA-Z0-9]$`)
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