ceph/src/ceph_mgr.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2015 Red Hat Inc
   7  *
   8  * Author: John Spray <john.spray@redhat.com>
   9  *
  10  * This is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License version 2.1, as published by the Free Software
  13  * Foundation.  See file COPYING.
  14  *
  15  */
  16
  17 #include <Python.h>
  18
  19 #include "include/types.h"
  20 #include "common/config.h"
  21 #include "common/ceph_argparse.h"
  22 #include "common/errno.h"
  23 #include "global/global_init.h"
  24
  25 #include "mgr/MgrStandby.h"
  26
  27 static void usage()
  28 {
  29   cout << "usage: ceph-mgr -i <ID> [flags]\n"
  30        << std::endl;
  31   generic_server_usage();
  32 }
  33
  34 /**
  35  * A short main() which just instantiates a MgrStandby and
  36  * hands over control to that.
  37  */
  38 int main(int argc, const char **argv)
  39 {
  40   vector<const char*> args;
  41   argv_to_vec(argc, argv, args);
  42   env_to_vec(args);
  43
  44   auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_MGR,
  45                          CODE_ENVIRONMENT_DAEMON, 0,
  46                          "mgr_data");
  47   // For consumption by KeyRing::from_ceph_context in MonClient
  48   g_conf->set_val("keyring", "$mgr_data/keyring", false);
  49
  50   // Handle --help
  51   if ((args.size() == 1 && (std::string(args[0]) == "--help" || std::string(args[0]) == "-h"))) {
  52     usage();
  53   }
  54
  55   global_init_daemonize(g_ceph_context);
  56   global_init_chdir(g_ceph_context);
  57   common_init_finish(g_ceph_context);
  58
  59   MgrStandby mgr(argc, argv);
  60   int rc = mgr.init();
  61   if (rc != 0) {
  62       std::cerr << "Error in initialization: " << cpp_strerror(rc) << std::endl;
  63       return rc;
  64   }
  65
  66   return mgr.main(args);
  67 }
  68