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// Copyright 2016 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package names
import (
"regexp"
)
const ModelTagKind = "model"
// ModelTag represents a tag used to describe a model.
type ModelTag struct {
uuid string
}
var validUUID = regexp.MustCompile(`[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}`)
// Lowercase letters, digits and (non-leading) hyphens, as per LP:1568944 #5.
var validModelName = regexp.MustCompile(`^[a-z0-9]+[a-z0-9-]*$`)
// NewModelTag returns the tag of an model with the given model UUID.
func NewModelTag(uuid string) ModelTag {
return ModelTag{uuid: uuid}
}
// ParseModelTag parses an environ tag string.
func ParseModelTag(modelTag string) (ModelTag, error) {
tag, err := ParseTag(modelTag)
if err != nil {
return ModelTag{}, err
}
et, ok := tag.(ModelTag)
if !ok {
return ModelTag{}, invalidTagError(modelTag, ModelTagKind)
}
return et, nil
}
func (t ModelTag) String() string { return t.Kind() + "-" + t.Id() }
func (t ModelTag) Kind() string { return ModelTagKind }
func (t ModelTag) Id() string { return t.uuid }
// IsValidModel returns whether id is a valid model UUID.
func IsValidModel(id string) bool {
return validUUID.MatchString(id)
}
// IsValidModelName returns whether name is a valid string safe for a model name.
func IsValidModelName(name string) bool {
return validModelName.MatchString(name)
}
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