Federation build and e2e test integration

Federation components are now buildable and e2e-testable via e2e.go.

federation/cluster/template.go

@@ -0,0 +1,76 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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.
+*/
+
+/*
+This is a simple script that makes *every* environment variable available
+as a go template field of the same name
+
+$ echo "hello world, MYVAR={{.MYVAR}}" > test.txt
+$ MYVAR=foobar go run template.go test.txt
+> hello world, MYVAR=foobar
+
+If you want the base64 version of any MYVAR, simple use {{.MYVAR_BASE64}}
+*/
+
+package main
+
+import (
+	"encoding/base64"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"path"
+	"strings"
+	"text/template"
+)
+
+func main() {
+	flag.Parse()
+	env := make(map[string]string)
+	envList := os.Environ()
+
+	for i := range envList {
+		pieces := strings.SplitN(envList[i], "=", 2)
+		if len(pieces) == 2 {
+			env[pieces[0]] = pieces[1]
+			env[pieces[0]+"_BASE64"] = base64.StdEncoding.EncodeToString([]byte(pieces[1]))
+		} else {
+			fmt.Fprintf(os.Stderr, "Invalid environ found: %s\n", envList[i])
+			os.Exit(2)
+		}
+	}
+
+	for i := 0; i < flag.NArg(); i++ {
+		inpath := flag.Arg(i)
+
+		if err := templateYamlFile(env, inpath, os.Stdout); err != nil {
+			panic(err)
+		}
+	}
+}
+
+func templateYamlFile(params map[string]string, inpath string, out io.Writer) error {
+	if tmpl, err := template.New(path.Base(inpath)).ParseFiles(inpath); err != nil {
+		return err
+	} else {
+		if err := tmpl.Execute(out, params); err != nil {
+			return err
+		}
+	}
+	_, err := out.Write([]byte("\n---\n"))
+	return err
+}