49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package initialize
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import (
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"fmt"
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"log"
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"strings"
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"github.com/coreos/coreos-cloudinit/config"
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"github.com/coreos/coreos-cloudinit/system"
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)
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func ParseUserData(contents string) (interface{}, error) {
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if len(contents) == 0 {
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return nil, nil
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}
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header := strings.SplitN(contents, "\n", 2)[0]
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// Explicitly trim the header so we can handle user-data from
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// non-unix operating systems. The rest of the file is parsed
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// by yaml, which correctly handles CRLF.
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header = strings.TrimSpace(header)
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if strings.HasPrefix(header, "#!") {
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log.Printf("Parsing user-data as script")
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return system.Script(contents), nil
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} else if header == "#cloud-config" {
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log.Printf("Parsing user-data as cloud-config")
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return config.NewCloudConfig(contents)
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} else {
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return nil, fmt.Errorf("Unrecognized user-data header: %s", header)
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}
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}
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