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user_data.go
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/
user_data.go
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// 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")
}
}