96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
package main
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import (
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"fmt"
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"flag"
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"io/ioutil"
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"os"
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"log"
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"github.com/coreos/coreos-cloudinit/cloudinit"
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)
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const version = "0.1.2"
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func main() {
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var userdata []byte
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var err error
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var printVersion bool
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flag.BoolVar(&printVersion, "version", false, "Print the version and exit")
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var file string
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flag.StringVar(&file, "from-file", "", "Read user-data from provided file")
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var url string
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flag.StringVar(&url, "from-url", "", "Download user-data from provided url")
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var workspace string
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flag.StringVar(&workspace, "workspace", "/var/lib/coreos-cloudinit", "Base directory coreos-cloudinit should use to store data")
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var sshKeyName string
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flag.StringVar(&sshKeyName, "ssh-key-name", cloudinit.DefaultSSHKeyName, "Add SSH keys to the system with the given name")
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flag.Parse()
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if printVersion == true {
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fmt.Printf("coreos-cloudinit version %s\n", version)
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os.Exit(0)
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}
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if file != "" && url != "" {
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fmt.Println("Provide one of --from-file or --from-url")
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os.Exit(1)
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}
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if file != "" {
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log.Printf("Reading user-data from file: %s", file)
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userdata, err = ioutil.ReadFile(file)
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if err != nil {
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log.Fatal(err.Error())
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}
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} else if url != "" {
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log.Printf("Reading user-data from metadata service")
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svc := cloudinit.NewMetadataService(url)
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userdata, err = svc.UserData()
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if err != nil {
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log.Fatal(err.Error())
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}
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} else {
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fmt.Println("Provide one of --from-file or --from-url")
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os.Exit(1)
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}
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if len(userdata) == 0 {
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log.Printf("No user data to handle, exiting.")
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os.Exit(0)
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}
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parsed, err := cloudinit.ParseUserData(userdata)
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if err != nil {
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log.Fatalf("Failed parsing user-data: %v", err)
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}
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err = cloudinit.PrepWorkspace(workspace)
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if err != nil {
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log.Fatalf("Failed preparing workspace: %v", err)
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}
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switch t := parsed.(type) {
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case cloudinit.CloudConfig:
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err = cloudinit.ApplyCloudConfig(t, sshKeyName)
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case cloudinit.Script:
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var path string
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path, err = cloudinit.PersistScriptInWorkspace(t, workspace)
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if err == nil {
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var name string
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name, err = cloudinit.ExecuteScript(path)
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cloudinit.PersistScriptUnitNameInWorkspace(name, workspace)
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}
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}
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if err != nil {
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log.Fatalf("Failed resolving user-data: %v", err)
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}
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}
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