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