ceph/src/include/util.h

   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) 2012 Inktank Storage, Inc.
   7  * Copyright (C) 2014 Red Hat <contact@redhat.com>
   8  *
   9  * This is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License version 2.1, as published by the Free Software
  12  * Foundation.  See file COPYING.
  13  */
  14 #ifndef CEPH_UTIL_H
  15 #define CEPH_UTIL_H
  16
  17 #include "common/Formatter.h"
  18 #include "include/types.h"
  19
  20 std::string bytes2str(uint64_t count);
  21
  22 struct ceph_data_stats
  23 {
  24   uint64_t byte_total;
  25   uint64_t byte_used;
  26   uint64_t byte_avail;
  27   int avail_percent;
  28
  29   ceph_data_stats() :
  30     byte_total(0),
  31     byte_used(0),
  32     byte_avail(0),
  33     avail_percent(0)
  34   { }
  35
  36   void dump(Formatter *f) const {
  37     assert(f != NULL);
  38     f->dump_int("total", byte_total);
  39     f->dump_int("used", byte_used);
  40     f->dump_int("avail", byte_avail);
  41     f->dump_int("avail_percent", avail_percent);
  42   }
  43
  44   void encode(bufferlist &bl) const {
  45     ENCODE_START(1, 1, bl);
  46     ::encode(byte_total, bl);
  47     ::encode(byte_used, bl);
  48     ::encode(byte_avail, bl);
  49     ::encode(avail_percent, bl);
  50     ENCODE_FINISH(bl);
  51   }
  52
  53   void decode(bufferlist::iterator &p) {
  54     DECODE_START(1, p);
  55     ::decode(byte_total, p);
  56     ::decode(byte_used, p);
  57     ::decode(byte_avail, p);
  58     ::decode(avail_percent, p);
  59     DECODE_FINISH(p);
  60   }
  61
  62   static void generate_test_instances(list<ceph_data_stats*>& ls) {
  63     ls.push_back(new ceph_data_stats);
  64     ls.push_back(new ceph_data_stats);
  65     ls.back()->byte_total = 1024*1024;
  66     ls.back()->byte_used = 512*1024;
  67     ls.back()->byte_avail = 512*1024;
  68     ls.back()->avail_percent = 50;
  69   }
  70 };
  71 typedef struct ceph_data_stats ceph_data_stats_t;
  72 WRITE_CLASS_ENCODER(ceph_data_stats)
  73
  74 int get_fs_stats(ceph_data_stats_t &stats, const char *path);
  75
  76 /// collect info from @p uname(2), @p /proc/meminfo and @p /proc/cpuinfo
  77 void collect_sys_info(map<string, string> *m, CephContext *cct);
  78
  79 /// dump service ids grouped by their host to the specified formatter
  80 /// @param f formatter for the output
  81 /// @param services a map from hostname to a list of service id hosted by this host
  82 /// @param type the service type of given @p services, for example @p osd or @p mon.
  83 void dump_services(Formatter* f, const map<string, list<int> >& services, const char* type);
  84
  85 string cleanbin(bufferlist &bl, bool &b64);
  86 string cleanbin(string &str);
  87 #endif /* CEPH_UTIL_H */