// getDatasources creates a slice of possible Datasources for cloudinit based
// on the different source command-line flags.
func getDatasources() []datasource.Datasource {
dss := make([]datasource.Datasource, 0, 5)
if sources.file != "" {
dss = append(dss, datasource.NewLocalFile(sources.file))
}
if sources.url != "" {
dss = append(dss, datasource.NewRemoteFile(sources.url))
}
if sources.configDrive != "" {
dss = append(dss, datasource.NewConfigDrive(sources.configDrive))
}
if sources.metadataService {
dss = append(dss, datasource.NewMetadataService())
}
if sources.procCmdLine {
dss = append(dss, datasource.NewProcCmdline())
}
return dss
}
func main() {
var printVersion bool
flag.BoolVar(&printVersion, "version", false, "Print the version and exit")
var ignoreFailure bool
flag.BoolVar(&ignoreFailure, "ignore-failure", false, "Exits with 0 status in the event of malformed input from user-data")
var file string
flag.StringVar(&file, "from-file", "", "Read user-data from provided file")
var configdrive string
flag.StringVar(&configdrive, "from-configdrive", "", "Read user-data from provided cloud-drive directory")
var url string
flag.StringVar(&url, "from-url", "", "Download user-data from provided url")
var useProcCmdline bool
flag.BoolVar(&useProcCmdline, "from-proc-cmdline", false, fmt.Sprintf("Parse %s for '%s=<url>', using the cloud-config served by an HTTP GET to <url>", datasource.ProcCmdlineLocation, datasource.ProcCmdlineCloudConfigFlag))
var convertNetconf string
flag.StringVar(&convertNetconf, "convert-netconf", "", "Read the network config provided in cloud-drive and translate it from the specified format into networkd unit files (requires the -from-configdrive flag)")
var workspace string
flag.StringVar(&workspace, "workspace", "/var/lib/coreos-cloudinit", "Base directory coreos-cloudinit should use to store data")
var sshKeyName string
flag.StringVar(&sshKeyName, "ssh-key-name", initialize.DefaultSSHKeyName, "Add SSH keys to the system with the given name")
flag.Parse()
if printVersion == true {
fmt.Printf("coreos-cloudinit version %s\n", version)
os.Exit(0)
}
var ds datasource.Datasource
if file != "" {
ds = datasource.NewLocalFile(file)
} else if url != "" {
ds = datasource.NewMetadataService(url)
} else if configdrive != "" {
ds = datasource.NewConfigDrive(configdrive)
} else if useProcCmdline {
ds = datasource.NewProcCmdline()
} else {
fmt.Println("Provide one of --from-file, --from-configdrive, --from-url or --from-proc-cmdline")
os.Exit(1)
}
if convertNetconf != "" && configdrive == "" {
fmt.Println("-convert-netconf flag requires -from-configdrive")
os.Exit(1)
}
switch convertNetconf {
case "":
case "debian":
default:
fmt.Printf("Invalid option to -convert-netconf: '%s'. Supported options: 'debian'\n", convertNetconf)
os.Exit(1)
}
fmt.Printf("Fetching user-data from datasource of type %q\n", ds.Type())
userdataBytes, err := ds.Fetch()
if err != nil {
fmt.Printf("Failed fetching user-data from datasource: %v\n", err)
if ignoreFailure {
os.Exit(0)
} else {
os.Exit(1)
}
}
env := initialize.NewEnvironment("/", workspace)
if len(userdataBytes) > 0 {
if err := processUserdata(string(userdataBytes), env); err != nil {
fmt.Printf("Failed resolving user-data: %v\n", err)
if !ignoreFailure {
os.Exit(1)
}
}
} else {
fmt.Println("No user data to handle.")
}
if convertNetconf != "" {
if err := processNetconf(convertNetconf, configdrive); err != nil {
fmt.Printf("Failed to process network config: %v\n", err)
if !ignoreFailure {
os.Exit(1)
}
}
}
}