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// Copyright 2016 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package names
import (
"fmt"
"net/url"
"regexp"
"strings"
)
const CloudCredentialTagKind = "cloudcred"
var (
cloudCredentialNameSnippet = "[a-zA-Z][a-zA-Z0-9.@_+-]*"
validCloudCredentialName = regexp.MustCompile("^" + cloudCredentialNameSnippet + "$")
validCloudCredential = regexp.MustCompile(
"^" +
"(" + cloudSnippet + ")" +
"/(" + validUserSnippet + ")" + // credential owner
"/(" + cloudCredentialNameSnippet + ")" +
"$",
)
)
type CloudCredentialTag struct {
cloud CloudTag
owner UserTag
name string
}
// IsZero reports whether t is zero.
func (t CloudCredentialTag) IsZero() bool {
return t == CloudCredentialTag{}
}
// Kind is part of the Tag interface.
func (t CloudCredentialTag) Kind() string { return CloudCredentialTagKind }
// Id implements Tag.Id. It returns the empty string
// if t is zero.
func (t CloudCredentialTag) Id() string {
if t.IsZero() {
return ""
}
return fmt.Sprintf("%s/%s/%s", t.cloud.Id(), t.owner.Id(), t.name)
}
func quoteCredentialSeparator(in string) string {
return strings.Replace(in, "_", `%5f`, -1)
}
// String implements Tag.String. It returns the empty
// string if t is zero.
func (t CloudCredentialTag) String() string {
if t.IsZero() {
return ""
}
return fmt.Sprintf("%s-%s_%s_%s", t.Kind(),
quoteCredentialSeparator(t.cloud.Id()),
quoteCredentialSeparator(t.owner.Id()),
quoteCredentialSeparator(t.name))
}
// Cloud returns the tag of the cloud to which the credential pertains.
func (t CloudCredentialTag) Cloud() CloudTag {
return t.cloud
}
// Owner returns the tag of the user that owns the credential.
func (t CloudCredentialTag) Owner() UserTag {
return t.owner
}
// Name returns the cloud credential name, excluding the
// cloud and owner qualifiers.
func (t CloudCredentialTag) Name() string {
return t.name
}
// NewCloudCredentialTag returns the tag for the cloud with the given ID.
// It will panic if the given cloud ID is not valid.
func NewCloudCredentialTag(id string) CloudCredentialTag {
parts := validCloudCredential.FindStringSubmatch(id)
if len(parts) != 4 {
panic(fmt.Sprintf("%q is not a valid cloud credential ID", id))
}
cloud := NewCloudTag(parts[1])
owner := NewUserTag(parts[2])
return CloudCredentialTag{cloud, owner, parts[3]}
}
// ParseCloudCredentialTag parses a cloud tag string.
func ParseCloudCredentialTag(s string) (CloudCredentialTag, error) {
tag, err := ParseTag(s)
if err != nil {
return CloudCredentialTag{}, err
}
dt, ok := tag.(CloudCredentialTag)
if !ok {
return CloudCredentialTag{}, invalidTagError(s, CloudCredentialTagKind)
}
return dt, nil
}
// IsValidCloudCredential returns whether id is a valid cloud credential ID.
func IsValidCloudCredential(id string) bool {
return validCloudCredential.MatchString(id)
}
// IsValidCloudCredentialName returns whether name is a valid cloud credential name.
func IsValidCloudCredentialName(name string) bool {
return validCloudCredentialName.MatchString(name)
}
func cloudCredentialTagSuffixToId(s string) (string, error) {
s = strings.Replace(s, "_", "/", -1)
return url.QueryUnescape(s)
}
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