ceph/src/exporter/util.cc

   1 #include "util.h"
   2
   3 #include <boost/algorithm/string/classification.hpp>
   4 #include <boost/algorithm/string/replace.hpp>
   5 #include <cctype>
   6 #include <chrono>
   7 #include <fstream>
   8 #include <iostream>
   9 #include <sstream>
  10
  11 #include "common/debug.h"
  12
  13 #define dout_context g_ceph_context
  14 #define dout_subsys ceph_subsys_ceph_exporter
  15
  16 BlockTimer::BlockTimer(std::string file, std::string function)
  17         : file(file), function(function), stopped(false) {
  18         t1 = std::chrono::high_resolution_clock::now();
  19 }
  20 BlockTimer::~BlockTimer() {
  21   dout(20) << file << ":" << function << ": " << ms.count() << "ms" << dendl;
  22 }
  23
  24 // useful with stop
  25 double BlockTimer::get_ms() {
  26         return ms.count();
  27 }
  28
  29 // Manually stop the timer as you might want to get the time
  30 void BlockTimer::stop() {
  31         if (!stopped) {
  32                 stopped = true;
  33                 t2 = std::chrono::high_resolution_clock::now();
  34                 ms = t2 - t1;
  35         }
  36 }
  37
  38 bool string_is_digit(std::string s) {
  39         size_t i = 0;
  40         while (std::isdigit(s[i]) && i < s.size()) {
  41                 i++;
  42         }
  43         return i >= s.size();
  44 }
  45
  46 std::string read_file_to_string(std::string path) {
  47         std::ifstream is(path);
  48         std::stringstream buffer;
  49         buffer << is.rdbuf();
  50         return buffer.str();
  51 }
  52
  53 // Must be kept in sync with promethize() in src/pybind/mgr/prometheus/module.py
  54 void promethize(std::string &name) {
  55   if (name[name.size() - 1] == '-') {
  56     name[name.size() - 1] = '_';
  57     name += "minus";
  58   }
  59
  60   auto should_be_underscore = [](char ch) {
  61     return ch == '.' || ch == '/' || ch == ' ' || ch == '-';
  62   };
  63   std::replace_if(name.begin(), name.end(), should_be_underscore, '_');
  64
  65   boost::replace_all(name, "::", "_");
  66   boost::replace_all(name, "+", "_plus");
  67
  68   name = "ceph_" + name;
  69 }