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 <pthread.h>
  20
  21 #include "include/types.h"
  22 #include "include/compat.h"
  23 #include "common/config.h"
  24 #include "common/ceph_argparse.h"
  25 #include "common/errno.h"
  26 #include "common/pick_address.h"
  27 #include "global/global_init.h"
  28
  29 #include "mgr/MgrStandby.h"
  30
  31 static void usage()
  32 {
  33   std::cout << "usage: ceph-mgr -i <ID> [flags]\n"
  34             << std::endl;
  35   generic_server_usage();
  36 }
  37
  38 /**
  39  * A short main() which just instantiates a MgrStandby and
  40  * hands over control to that.
  41  */
  42 int main(int argc, const char **argv)
  43 {
  44   ceph_pthread_setname(pthread_self(), "ceph-mgr");
  45
  46   auto args = argv_to_vec(argc, argv);
  47   if (args.empty()) {
  48     std::cerr << argv[0] << ": -h or --help for usage" << std::endl;
  49     exit(1);
  50   }
  51   if (ceph_argparse_need_usage(args)) {
  52     usage();
  53     exit(0);
  54   }
  55
  56   std::map<std::string,std::string> defaults = {
  57     { "keyring", "$mgr_data/keyring" }
  58   };
  59   auto cct = global_init(&defaults, args, CEPH_ENTITY_TYPE_MGR,
  60                          CODE_ENVIRONMENT_DAEMON, 0);
  61
  62   pick_addresses(g_ceph_context, CEPH_PICK_ADDRESS_PUBLIC);
  63
  64   global_init_daemonize(g_ceph_context);
  65   global_init_chdir(g_ceph_context);
  66   common_init_finish(g_ceph_context);
  67
  68   MgrStandby mgr(argc, argv);
  69   int rc = mgr.init();
  70   if (rc != 0) {
  71       std::cerr << "Error in initialization: " << cpp_strerror(rc) << std::endl;
  72       return rc;
  73   }
  74
  75   return mgr.main(args);
  76 }
  77