cord-776 create build / runtime containers for autmation uservices
Change-Id: I246973192adef56a250ffe93a5f65fff488840c1
diff --git a/switchq/vendor/gopkg.in/juju/names.v2/storage.go b/switchq/vendor/gopkg.in/juju/names.v2/storage.go
new file mode 100644
index 0000000..2314f87
--- /dev/null
+++ b/switchq/vendor/gopkg.in/juju/names.v2/storage.go
@@ -0,0 +1,86 @@
+// Copyright 2015 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package names
+
+import (
+ "fmt"
+ "regexp"
+ "strings"
+)
+
+const (
+ StorageTagKind = "storage"
+
+ // StorageNameSnippet is the regular expression that describes valid
+ // storage names (without the storage instance sequence number).
+ StorageNameSnippet = "(?:[a-z][a-z0-9]*(?:-[a-z0-9]*[a-z][a-z0-9]*)*)"
+)
+
+var validStorage = regexp.MustCompile("^(" + StorageNameSnippet + ")/" + NumberSnippet + "$")
+
+type StorageTag struct {
+ id string
+}
+
+func (t StorageTag) String() string { return t.Kind() + "-" + t.id }
+func (t StorageTag) Kind() string { return StorageTagKind }
+func (t StorageTag) Id() string { return storageTagSuffixToId(t.id) }
+
+// NewStorageTag returns the tag for the storage instance with the given ID.
+// It will panic if the given string is not a valid storage instance Id.
+func NewStorageTag(id string) StorageTag {
+ tag, ok := tagFromStorageId(id)
+ if !ok {
+ panic(fmt.Sprintf("%q is not a valid storage instance ID", id))
+ }
+ return tag
+}
+
+// ParseStorageTag parses a storage tag string.
+func ParseStorageTag(s string) (StorageTag, error) {
+ tag, err := ParseTag(s)
+ if err != nil {
+ return StorageTag{}, err
+ }
+ st, ok := tag.(StorageTag)
+ if !ok {
+ return StorageTag{}, invalidTagError(s, StorageTagKind)
+ }
+ return st, nil
+}
+
+// IsValidStorage returns whether id is a valid storage instance ID.
+func IsValidStorage(id string) bool {
+ return validStorage.MatchString(id)
+}
+
+// StorageName returns the storage name from a storage instance ID.
+// StorageName returns an error if "id" is not a valid storage
+// instance ID.
+func StorageName(id string) (string, error) {
+ s := validStorage.FindStringSubmatch(id)
+ if s == nil {
+ return "", fmt.Errorf("%q is not a valid storage instance ID", id)
+ }
+ return s[1], nil
+}
+
+func tagFromStorageId(id string) (StorageTag, bool) {
+ // replace only the last "/" with "-".
+ i := strings.LastIndex(id, "/")
+ if i <= 0 || !IsValidStorage(id) {
+ return StorageTag{}, false
+ }
+ id = id[:i] + "-" + id[i+1:]
+ return StorageTag{id}, true
+}
+
+func storageTagSuffixToId(s string) string {
+ // Replace only the last "-" with "/", as it is valid for storage
+ // names to contain hyphens.
+ if i := strings.LastIndex(s, "-"); i > 0 {
+ s = s[:i] + "/" + s[i+1:]
+ }
+ return s
+}