mirror of https://github.com/Icinga/icinga2.git
233 lines
7.2 KiB
C++
233 lines
7.2 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "thresholds.h"
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#include <boost/program_options.hpp>
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#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string/classification.hpp>
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#include <Pdh.h>
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#include <Shlwapi.h>
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#include <pdhmsg.h>
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#include <iostream>
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#define VERSION 1.0
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namespace po = boost::program_options;
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using std::endl; using std::cout; using std::wstring;
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using std::wcout;
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struct printInfoStruct
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{
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threshold warn, crit;
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double load;
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};
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static int parseArguments(int, wchar_t **, po::variables_map&, printInfoStruct&);
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static int printOutput(printInfoStruct&);
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static int check_load(printInfoStruct&);
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int wmain(int argc, wchar_t **argv)
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{
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printInfoStruct printInfo{ };
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po::variables_map vm;
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int ret = parseArguments(argc, argv, vm, printInfo);
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if (ret != -1)
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return ret;
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ret = check_load(printInfo);
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if (ret != -1)
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return ret;
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return printOutput(printInfo);
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}
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int parseArguments(int ac, wchar_t **av, po::variables_map& vm, printInfoStruct& printInfo) {
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wchar_t namePath[MAX_PATH];
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GetModuleFileName(NULL, namePath, MAX_PATH);
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wchar_t *progName = PathFindFileName(namePath);
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po::options_description desc;
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desc.add_options()
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("help,h", "print usage message and exit")
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("version,V", "print version and exit")
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("warning,w", po::wvalue<wstring>(), "warning value (in percent)")
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("critical,c", po::wvalue<wstring>(), "critical value (in percent)")
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;
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po::basic_command_line_parser<wchar_t> parser(ac, av);
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try {
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po::store(
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parser
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.options(desc)
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.style(
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po::command_line_style::unix_style |
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po::command_line_style::allow_long_disguise)
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.run(),
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vm);
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vm.notify();
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} catch (std::exception& e) {
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cout << e.what() << endl << desc << endl;
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return 3;
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}
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if (vm.count("help")) {
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wcout << progName << " Help\n\tVersion: " << VERSION << endl;
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wprintf(
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L"%s is a simple program to check a machines CPU load.\n"
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L"You can use the following options to define its behaviour:\n\n", progName);
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cout << desc;
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wprintf(
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L"\nIt will then output a string looking something like this:\n\n"
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L"\tLOAD WARNING 67%%|load=67%%;50%%;90%%;0;100\n\n"
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L"\"LOAD\" being the type of the check, \"WARNING\" the returned status\n"
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L"and \"67%%\" is the returned value.\n"
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L"The performance data is found behind the \"|\", in order:\n"
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L"returned value, warning threshold, critical threshold, minimal value and,\n"
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L"if applicable, the maximal value.\n\n"
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L"%s' exit codes denote the following:\n"
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L" 0\tOK,\n\tNo Thresholds were broken or the programs check part was not executed\n"
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L" 1\tWARNING,\n\tThe warning, but not the critical threshold was broken\n"
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L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
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L" 3\tUNKNOWN, \n\tThe program experienced an internal or input error\n\n"
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L"Threshold syntax:\n\n"
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L"-w THRESHOLD\n"
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L"warn if threshold is broken, which means VALUE > THRESHOLD\n"
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L"(unless stated differently)\n\n"
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L"-w !THRESHOLD\n"
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L"inverts threshold check, VALUE < THRESHOLD (analogous to above)\n\n"
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L"-w [THR1-THR2]\n"
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L"warn is VALUE is inside the range spanned by THR1 and THR2\n\n"
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L"-w ![THR1-THR2]\n"
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L"warn if VALUE is outside the range spanned by THR1 and THR2\n\n"
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L"-w THRESHOLD%%\n"
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L"if the plugin accepts percentage based thresholds those will be used.\n"
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L"Does nothing if the plugin does not accept percentages, or only uses\n"
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L"percentage thresholds. Ranges can be used with \"%%\", but both range values need\n"
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L"to end with a percentage sign.\n\n"
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L"All of these options work with the critical threshold \"-c\" too."
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, progName);
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cout << endl;
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return 0;
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}
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if (vm.count("version"))
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cout << "Version: " << VERSION << endl;
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if (vm.count("warning")) {
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try {
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std::wstring wthreshold = vm["warning"].as<wstring>();
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std::vector<std::wstring> tokens;
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boost::algorithm::split(tokens, wthreshold, boost::algorithm::is_any_of(","));
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printInfo.warn = threshold(tokens[0]);
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} catch (std::invalid_argument& e) {
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cout << e.what() << endl;
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return 3;
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}
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}
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if (vm.count("critical")) {
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try {
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std::wstring cthreshold = vm["critical"].as<wstring>();
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std::vector<std::wstring> tokens;
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boost::algorithm::split(tokens, cthreshold, boost::algorithm::is_any_of(","));
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printInfo.crit = threshold(tokens[0]);
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} catch (std::invalid_argument& e) {
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cout << e.what() << endl;
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return 3;
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}
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}
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return -1;
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}
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int printOutput(printInfoStruct& printInfo)
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{
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state state = OK;
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if (printInfo.warn.rend(printInfo.load))
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state = WARNING;
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if (printInfo.crit.rend(printInfo.load))
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state = CRITICAL;
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std::wstringstream perf;
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perf << L"% | load=" << printInfo.load << L"%;" << printInfo.warn.pString() << L";"
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<< printInfo.crit.pString() << L";0;100" << endl;
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switch (state) {
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case OK:
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wcout << L"LOAD OK " << printInfo.load << perf.str();
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break;
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case WARNING:
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wcout << L"LOAD WARNING " << printInfo.load << perf.str();
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break;
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case CRITICAL:
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wcout << L"LOAD CRITICAL " << printInfo.load << perf.str();
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break;
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}
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return state;
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}
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int check_load(printInfoStruct& printInfo)
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{
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PDH_HQUERY phQuery;
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PDH_HCOUNTER phCounter;
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DWORD dwBufferSize = 0;
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DWORD CounterType;
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PDH_FMT_COUNTERVALUE DisplayValue;
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PDH_STATUS err;
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LPCWSTR path = L"\\Processor(_Total)\\% Idle Time";
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err = PdhOpenQuery(NULL, NULL, &phQuery);
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if (!SUCCEEDED(err))
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goto die;
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err = PdhAddEnglishCounter(phQuery, path, NULL, &phCounter);
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if (!SUCCEEDED(err))
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goto die;
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err = PdhCollectQueryData(phQuery);
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if (!SUCCEEDED(err))
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goto die;
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Sleep(1000);
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err = PdhCollectQueryData(phQuery);
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if (!SUCCEEDED(err))
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goto die;
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err = PdhGetFormattedCounterValue(phCounter, PDH_FMT_DOUBLE, &CounterType, &DisplayValue);
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if (SUCCEEDED(err)) {
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if (DisplayValue.CStatus == PDH_CSTATUS_VALID_DATA)
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printInfo.load = 100.0 - DisplayValue.doubleValue;
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PdhCloseQuery(phQuery);
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return -1;
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}
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die:
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die();
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if (phQuery)
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PdhCloseQuery(phQuery);
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return 3;
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} |