func processUserdata(userdata string, env *initialize.Environment) error {
userdata = env.Apply(userdata)
parsed, err := initialize.ParseUserData(userdata)
if err != nil {
fmt.Printf("Failed parsing user-data: %v\n", err)
return err
}
err = initialize.PrepWorkspace(env.Workspace())
if err != nil {
fmt.Printf("Failed preparing workspace: %v\n", err)
return err
}
switch t := parsed.(type) {
case initialize.CloudConfig:
err = initialize.Apply(t, env)
case system.Script:
var path string
path, err = initialize.PersistScriptInWorkspace(t, env.Workspace())
if err == nil {
var name string
name, err = system.ExecuteScript(path)
initialize.PersistUnitNameInWorkspace(name, env.Workspace())
}
}
return err
}
// TODO(jonboulle): this should probably be refactored and moved into a different module
func runScript(script config.Script, env *initialize.Environment) error {
err := initialize.PrepWorkspace(env.Workspace())
if err != nil {
log.Printf("Failed preparing workspace: %v\n", err)
return err
}
path, err := initialize.PersistScriptInWorkspace(script, env.Workspace())
if err == nil {
var name string
name, err = system.ExecuteScript(path)
initialize.PersistUnitNameInWorkspace(name, env.Workspace())
}
return err
}
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 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 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 useProcCmdline {
ds = datasource.NewProcCmdline()
} else {
fmt.Println("Provide one of --from-file, --from-url or --from-proc-cmdline")
os.Exit(1)
}
log.Printf("Fetching user-data from datasource of type %q", ds.Type())
userdataBytes, err := ds.Fetch()
if err != nil {
log.Printf("Failed fetching user-data from datasource: %v", err)
if ignoreFailure {
os.Exit(0)
} else {
os.Exit(1)
}
}
if len(userdataBytes) == 0 {
log.Printf("No user data to handle, exiting.")
os.Exit(0)
}
env := initialize.NewEnvironment("/", workspace)
userdata := string(userdataBytes)
userdata = env.Apply(userdata)
parsed, err := initialize.ParseUserData(userdata)
if err != nil {
log.Printf("Failed parsing user-data: %v", err)
if ignoreFailure {
os.Exit(0)
} else {
os.Exit(1)
}
}
err = initialize.PrepWorkspace(env.Workspace())
if err != nil {
log.Fatalf("Failed preparing workspace: %v", err)
}
switch t := parsed.(type) {
case initialize.CloudConfig:
err = initialize.Apply(t, env)
case system.Script:
var path string
path, err = initialize.PersistScriptInWorkspace(t, env.Workspace())
if err == nil {
var name string
name, err = system.ExecuteScript(path)
initialize.PersistUnitNameInWorkspace(name, workspace)
}
}
if err != nil {
log.Fatalf("Failed resolving user-data: %v", err)
}
}