1aabacc769
This attempts to retrieve cloudconfigs from two sources: the meta-data service, and the user-data service. If only one cloudconfig is found, that is applied to the system. If both services return a cloudconfig, the two are merged into a single cloudconfig which is then applied to the system. Only a subset of parameters are merged (because the meta-data service currently only partially populates a cloudconfig). In the event of any conflicts, parameters in the user-data cloudconfig take precedence over those in the meta-data cloudconfig.
29 lines
747 B
Go
29 lines
747 B
Go
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/system"
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)
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func ParseUserData(contents string) (interface{}, error) {
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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 goyaml, 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 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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