move coreos-cloudinit into config/cloudinit

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

config/cloudinit/initialize/user_data.go

@@ -0,0 +1,54 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// 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.
+
+package initialize
+
+import (
+	"errors"
+	"log"
+
+	"github.com/rancher/os/config/cloudinit/config"
+)
+
+var (
+	ErrIgnitionConfig = errors.New("not a config (found Ignition)")
+)
+
+func ParseUserData(contents string) (interface{}, error) {
+	if len(contents) == 0 {
+		return nil, nil
+	}
+
+	switch {
+	case config.IsScript(contents):
+		log.Printf("Parsing user-data as script")
+		return config.NewScript(contents)
+	case config.IsCloudConfig(contents):
+		log.Printf("Parsing user-data as cloud-config")
+		cc, err := config.NewCloudConfig(contents)
+		if err != nil {
+			return nil, err
+		}
+
+		if err := cc.Decode(); err != nil {
+			return nil, err
+		}
+
+		return cc, nil
+	case config.IsIgnitionConfig(contents):
+		return nil, ErrIgnitionConfig
+	default:
+		return nil, errors.New("Unrecognized user-data format")
+	}
+}