Source file command_line.ml

(*****************************************************************************)
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(* Open Source License                                                       *)
(* Copyright (c) 2021 Nomadic Labs. <contact@nomadic-labs.com>               *)
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(*****************************************************************************)

let parse_args () =
  let socket_dir = ref None in
  let args =
    Arg.
      [
        ( "--socket-dir",
          String
            (fun s ->
              if not (Sys.file_exists s && Sys.is_directory s) then
                raise
                  (Arg.Bad
                     (Format.sprintf "File '%s' is not a valid directory" s))
              else socket_dir := Some s),
          {|<dir>
      When provided, the validator will communicate through a socket located
      at '<dir>/tezos-validation-socket-<pid>' where <pid> is the
      tezos-validator's process identifier. By default, the validator will
      communicate through its standard input and output.|}
        );
        ( "--version",
          Unit
            (fun () ->
              Format.printf
                "%s\n"
                Tezos_version_value.Bin_version.octez_version_string ;
              Stdlib.exit 0),
          " Display version information" );
      ]
  in
  let usage_msg =
    Format.sprintf "tezos-validator [--version] [--socket-dir <dir>]"
  in
  Arg.parse
    args
    (fun s -> raise (Arg.Bad (Format.sprintf "Unexpected argument: %s" s)))
    usage_msg ;
  !socket_dir

let run () =
  let socket_dir = parse_args () in
  let main_promise = External_validator.main ?socket_dir () in
  Stdlib.exit
    (let open Lwt_syntax in
    Lwt.Exception_filter.(set handle_all_except_runtime) ;
    Lwt_main.run
      (let* r = Lwt_exit.wrap_and_exit main_promise in
       match r with
       | Ok () -> Lwt_exit.exit_and_wait 0
       | Error err ->
           Format.eprintf "%a\n%!" pp_print_trace err ;
           Lwt_exit.exit_and_wait 1))