cord-776 create build / runtime containers for autmation uservices
Change-Id: I246973192adef56a250ffe93a5f65fff488840c1
diff --git a/switchq/vendor/gopkg.in/juju/names.v2/unit.go b/switchq/vendor/gopkg.in/juju/names.v2/unit.go
new file mode 100644
index 0000000..3f3a026
--- /dev/null
+++ b/switchq/vendor/gopkg.in/juju/names.v2/unit.go
@@ -0,0 +1,79 @@
+// Copyright 2013 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package names
+
+import (
+ "fmt"
+ "regexp"
+ "strings"
+)
+
+const UnitTagKind = "unit"
+
+var validUnit = regexp.MustCompile("^(" + ApplicationSnippet + ")/" + NumberSnippet + "$")
+
+type UnitTag struct {
+ name string
+}
+
+func (t UnitTag) String() string { return t.Kind() + "-" + t.name }
+func (t UnitTag) Kind() string { return UnitTagKind }
+func (t UnitTag) Id() string { return unitTagSuffixToId(t.name) }
+
+// NewUnitTag returns the tag for the unit with the given name.
+// It will panic if the given unit name is not valid.
+func NewUnitTag(unitName string) UnitTag {
+ tag, ok := tagFromUnitName(unitName)
+ if !ok {
+ panic(fmt.Sprintf("%q is not a valid unit name", unitName))
+ }
+ return tag
+}
+
+// ParseUnitTag parses a unit tag string.
+func ParseUnitTag(unitTag string) (UnitTag, error) {
+ tag, err := ParseTag(unitTag)
+ if err != nil {
+ return UnitTag{}, err
+ }
+ ut, ok := tag.(UnitTag)
+ if !ok {
+ return UnitTag{}, invalidTagError(unitTag, UnitTagKind)
+ }
+ return ut, nil
+}
+
+// IsValidUnit returns whether name is a valid unit name.
+func IsValidUnit(name string) bool {
+ return validUnit.MatchString(name)
+}
+
+// UnitApplication returns the name of the application that the unit is
+// associated with. It returns an error if unitName is not a valid unit name.
+func UnitApplication(unitName string) (string, error) {
+ s := validUnit.FindStringSubmatch(unitName)
+ if s == nil {
+ return "", fmt.Errorf("%q is not a valid unit name", unitName)
+ }
+ return s[1], nil
+}
+
+func tagFromUnitName(unitName string) (UnitTag, bool) {
+ // Replace only the last "/" with "-".
+ i := strings.LastIndex(unitName, "/")
+ if i <= 0 || !IsValidUnit(unitName) {
+ return UnitTag{}, false
+ }
+ unitName = unitName[:i] + "-" + unitName[i+1:]
+ return UnitTag{name: unitName}, true
+}
+
+func unitTagSuffixToId(s string) string {
+ // Replace only the last "-" with "/", as it is valid for application
+ // names to contain hyphens.
+ if i := strings.LastIndex(s, "-"); i > 0 {
+ s = s[:i] + "/" + s[i+1:]
+ }
+ return s
+}