Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/pkg/dns/federation/federation.go

@@ -0,0 +1,75 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Fed contains federation specific DNS code.
+package fed
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"k8s.io/kubernetes/pkg/util/validation"
+)
+
+var ErrExpectedKeyEqualsValue = errors.New("invalid format, must be key=value")
+
+// ParseFederationsFlag parses the federations command line flag. The
+// flag is a comma-separated list of zero or more "name=label" pairs,
+// e.g. "a=b,c=d".
+func ParseFederationsFlag(str string, federations map[string]string) error {
+	if strings.TrimSpace(str) == "" {
+		return nil
+	}
+
+	for _, val := range strings.Split(str, ",") {
+		splits := strings.SplitN(strings.TrimSpace(val), "=", 2)
+		if len(splits) != 2 {
+			return ErrExpectedKeyEqualsValue
+		}
+
+		name := strings.TrimSpace(splits[0])
+		domain := strings.TrimSpace(splits[1])
+
+		if err := ValidateName(name); err != nil {
+			return err
+		}
+		if err := ValidateDomain(domain); err != nil {
+			return err
+		}
+		federations[name] = domain
+	}
+
+	return nil
+}
+
+// ValidateName checks the validity of a federation name.
+func ValidateName(name string) error {
+	if errs := validation.IsDNS1123Label(name); len(errs) != 0 {
+		return fmt.Errorf("%q not a valid federation name: %q", name, errs)
+	}
+	return nil
+}
+
+// ValidateDomain checks the validity of a federation label.
+func ValidateDomain(name string) error {
+	// The federation domain name need not strictly be domain names, we
+	// accept valid dns names with subdomain components.
+	if errs := validation.IsDNS1123Subdomain(name); len(errs) != 0 {
+		return fmt.Errorf("%q not a valid domain name: %q", name, errs)
+	}
+	return nil
+}