icinga2/plugins/check_perfmon.cpp

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2015-03-23 13:09:29 +01:00
/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include <Shlwapi.h>
#include <iostream>
#include <vector>
#include "check_perfmon.h"
#define VERSION 1.0
namespace po = boost::program_options;
INT wmain(INT argc, WCHAR **argv)
{
po::variables_map variables_map;
printInfoStruct stPrintInfo;
if (!ParseArguments(argc, argv, variables_map, stPrintInfo))
return 3;
if (variables_map.count("print-objects")) {
PrintObjects();
return 0;
}
if (variables_map.count("print-object-info")) {
PrintObjectInfo(stPrintInfo);
return 0;
}
if (QueryPerfData(stPrintInfo))
return PrintOutput(variables_map, stPrintInfo);
else
return 3;
}
BOOL ParseArguments(CONST INT ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo)
{
WCHAR szNamePath[MAX_PATH + 1];
GetModuleFileName(NULL, szNamePath, MAX_PATH);
WCHAR *szProgName = PathFindFileName(szNamePath);
po::options_description desc("Options");
desc.add_options()
("help,h", "Print help page and exit")
("version,V", "Print version and exit")
("warning,w", po::wvalue<std::wstring>(), "Warning thershold")
("critical,c", po::wvalue<std::wstring>(), "Critical threshold")
("performance-counter,P", po::wvalue<std::wstring>(), "The performance counter string to use")
("performance-wait", po::value<DWORD>(), "Sleep in milliseconds between the two perfomance querries (Default: 1000ms)")
("fmt-countertype", po::wvalue<std::wstring>(), "Value type of counter: 'double'(default), 'long', 'int64'")
("print-objects", "Prints all available objects to console")
("print-object-info", "Prints all available instances and counters of --performance-counter, do not use a full perfomance counter string here")
;
po::basic_command_line_parser<wchar_t> parser(ac, av);
try {
po::store(
parser
.options(desc)
.style(
po::command_line_style::unix_style |
po::command_line_style::allow_long_disguise)
.run(),
vm);
vm.notify();
} catch (std::exception& e) {
std::cout << e.what() << '\n' << desc << '\n';
return FALSE;
}
if (vm.count("version")) {
std::wcout << "Version: " << VERSION << '\n';
return FALSE;
}
if (vm.count("help")) {
std::wcout << szProgName << " Help\n\tVersion: " << VERSION << '\n';
wprintf(
L"%s runs a check against a performance counter.\n"
L"You can use the following options to define its behaviour:\n\n", szProgName);
std::cout << desc;
wprintf(
L"\nIt will then output a string looking something like this:\n\n"
L"\tPERFMON CRITICAL \"\\Processor(_Total)\\%% Idle Time\" = 40.34 | "
L"perfmon=40.34;20;40;; \"\\Processor(_Total)\\%% Idle Time\"=40.34\n\n"
L"\"tPERFMON\" being the type of the check, \"CRITICAL\" the returned status\n"
L"and \"40.34\" is the performance counters value.\n"
L"%s' exit codes denote the following:\n"
L" 0\tOK,\n\tNo Thresholds were exceeded\n"
L" 1\tWARNING,\n\tThe warning was broken, but not the critical threshold\n"
L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
L" 3\tUNKNOWN, \n\tNo check could be performed\n\n"
, szProgName);
return 0;
}
if (vm.count("warning")) {
try {
printInfo.tWarn = threshold(vm["warning"].as<std::wstring>());
} catch (std::invalid_argument& e) {
std::wcout << e.what() << '\n';
return FALSE;
}
}
if (vm.count("critical")) {
try {
printInfo.tCrit = threshold(vm["critical"].as<std::wstring>());
} catch (std::invalid_argument& e) {
std::wcout << e.what() << '\n';
return FALSE;
}
}
if (vm.count("fmt-countertype")) {
if (vm["fmt-countertype"].as<std::wstring>().compare(L"double"))
printInfo.dwRequestedType = PDH_FMT_DOUBLE;
else if (vm["fmt-countertype"].as<std::wstring>().compare(L"int64"))
printInfo.dwRequestedType = PDH_FMT_LARGE;
else if (vm["fmt-countertype"].as<std::wstring>().compare(L"long"))
printInfo.dwRequestedType = PDH_FMT_LONG;
else {
std::wcout << "Unknown value type " << vm["fmt-countertype"].as<std::wstring>() << '\n';
return FALSE;
}
}
if (vm.count("performance-counter"))
printInfo.wsFullPath = vm["performance-counter"].as<std::wstring>();
if (vm.count("performance-wait"))
printInfo.dwPerformanceWait = vm["performance-wait"].as<DWORD>();
return TRUE;
}
BOOL GetIntstancesAndCountersOfObject(CONST std::wstring wsObject,
std::vector<std::wstring>& vecInstances,
std::vector<std::wstring>& vecCounters)
{
LPWSTR szDataSource = NULL, szMachineName = NULL,
mszCounterList = NULL, mszInstanceList = NULL;
DWORD dwCounterListLength = 0, dwInstanceListLength = 0;
std::wstringstream wssInstanceName, wssCounterName;
LPWSTR szObjectName = new WCHAR[wsObject.length() + 1];
StrCpyW(szObjectName, wsObject.c_str());
PDH_STATUS status =
PdhEnumObjectItems(szDataSource, szMachineName, szObjectName,
mszCounterList, &dwCounterListLength, mszInstanceList,
&dwInstanceListLength, PERF_DETAIL_WIZARD, 0);
if (status != PDH_MORE_DATA) {
delete[]szObjectName;
return FALSE;
}
mszCounterList = new WCHAR[dwCounterListLength + 1];
mszInstanceList = new WCHAR[dwInstanceListLength + 1];
status = PdhEnumObjectItems(szDataSource, szMachineName, szObjectName,
mszCounterList, &dwCounterListLength, mszInstanceList,
&dwInstanceListLength, PERF_DETAIL_WIZARD, 0);
if (FAILED(status)) {
delete[]mszCounterList;
delete[]mszInstanceList;
delete[]szObjectName;
return FALSE;
}
if (dwInstanceListLength) {
for (DWORD c = 0; c < dwInstanceListLength-1; ++c) {
if (mszInstanceList[c])
wssInstanceName << mszInstanceList[c];
else {
vecInstances.push_back(wssInstanceName.str());
wssInstanceName.str(L"");
}
}
}
if (dwCounterListLength) {
for (DWORD c = 0; c < dwCounterListLength-1; ++c) {
if (mszCounterList[c]) {
wssCounterName << mszCounterList[c];
} else {
vecCounters.push_back(wssCounterName.str());
wssCounterName.str(L"");
}
}
}
delete[]mszCounterList;
delete[]mszInstanceList;
delete[]szObjectName;
return TRUE;
}
VOID PrintObjects()
{
LPWSTR szDataSource = NULL, szMachineName = NULL, mszObjectList = NULL;
DWORD dwBufferLength = 0;
PDH_STATUS status =
PdhEnumObjects(szDataSource, szMachineName, mszObjectList,
&dwBufferLength, PERF_DETAIL_WIZARD, FALSE);
//HEX HEX! Only a Magicians gets all the info he wants, and only Microsoft knows what that means
if (status != PDH_MORE_DATA)
goto die;
mszObjectList = new WCHAR[dwBufferLength + 2];
status = PdhEnumObjects(szDataSource, szMachineName, mszObjectList,
&dwBufferLength, PERF_DETAIL_WIZARD, FALSE);
if (FAILED(status))
goto die;
DWORD c = 0;
while (++c < dwBufferLength) {
if (mszObjectList[c] == '\0')
std::wcout << '\n';
else
std::wcout << mszObjectList[c];
}
delete[]mszObjectList;
return;
die:
FormatPDHError(status);
delete[]mszObjectList;
}
VOID PrintObjectInfo(CONST printInfoStruct& pI)
{
if (pI.wsFullPath.empty()) {
std::wcout << "No object given!\n";
return;
}
std::vector<std::wstring> vecInstances, vecCounters;
if (!GetIntstancesAndCountersOfObject(pI.wsFullPath, vecInstances, vecCounters)) {
std::wcout << "Could not enumerate instances and counters of " << pI.wsFullPath << '\n'
<< "Make sure it exists!\n";
return;
}
std::wcout << "Instances of " << pI.wsFullPath << ":\n";
if (vecInstances.empty())
std::wcout << "> Has no instances\n";
else {
for (std::vector<std::wstring>::iterator it = vecInstances.begin();
it != vecInstances.end(); ++it) {
std::wcout << "> " << *it << '\n';
}
}
std::wcout << std::endl;
std::wcout << "Performance Counters of " << pI.wsFullPath << ":\n";
if (vecCounters.empty())
std::wcout << "> Has no counters\n";
else {
for (std::vector<std::wstring>::iterator it = vecCounters.begin();
it != vecCounters.end(); ++it) {
std::wcout << "> " << *it << '\n';
}
}
std::wcout << std::endl;
}
BOOL QueryPerfData(printInfoStruct& pI)
{
PDH_HQUERY hQuery = NULL;
PDH_HCOUNTER hCounter = NULL;
PDH_FMT_COUNTERVALUE_ITEM *pDisplayValues = NULL;
DWORD dwBufferSize = 0, dwItemCount = 0;
if (pI.wsFullPath.empty()) {
std::wcout << "No performance counter path given!\n";
return FALSE;
}
PDH_STATUS status = PdhOpenQuery(NULL, NULL, &hQuery);
if (FAILED(status))
goto die;
status = PdhAddCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
if (FAILED(status))
goto die;
status = PdhCollectQueryData(hQuery);
if (FAILED(status))
goto die;
/*
/* Most counters need two queries to provide a value.
/* Those which need only one will return the second.
*/
Sleep(pI.dwPerformanceWait);
status = PdhCollectQueryData(hQuery);
if (FAILED(status))
goto die;
status = PdhGetFormattedCounterArray(hCounter, pI.dwRequestedType,
&dwBufferSize, &dwItemCount, pDisplayValues);
if (status != PDH_MORE_DATA)
goto die;
pDisplayValues = reinterpret_cast<PDH_FMT_COUNTERVALUE_ITEM*>(new BYTE[dwBufferSize]);
status = PdhGetFormattedCounterArray(hCounter, pI.dwRequestedType,
&dwBufferSize, &dwItemCount, pDisplayValues);
if (FAILED(status))
goto die;
switch (pI.dwRequestedType)
{
case (PDH_FMT_LONG):
pI.dValue = pDisplayValues[0].FmtValue.longValue;
case (PDH_FMT_LARGE) :
pI.dValue = pDisplayValues[0].FmtValue.largeValue;
default:
pI.dValue = pDisplayValues[0].FmtValue.doubleValue;
}
delete[]pDisplayValues;
return TRUE;
die:
FormatPDHError(status);
delete[]pDisplayValues;
return FALSE;
}
INT PrintOutput(CONST po::variables_map& vm, printInfoStruct& pi)
{
std::wstringstream wssPerfData;
wssPerfData << "perfmon=" << pi.dValue << ';'
<< pi.tWarn.pString() << ';' << pi.tCrit.pString() << ";; "
<< '"' << pi.wsFullPath << "\"=" << pi.dValue;
if (pi.tCrit.rend(pi.dValue)) {
std::wcout << "PERFMON CRITICAL \"" << pi.wsFullPath << "\" = "
<< pi.dValue << " | " << wssPerfData.str() << '\n';
return 2;
}
if (pi.tWarn.rend(pi.dValue)) {
std::wcout << "PERFMON WARNING \"" << pi.wsFullPath << "\" = "
<< pi.dValue << " | " << wssPerfData.str() << '\n';
return 1;
}
std::wcout << "PERFMON OK \"" << pi.wsFullPath << "\" = "
<< pi.dValue << " | " << wssPerfData.str() << '\n';
return 0;
}
VOID FormatPDHError(PDH_STATUS status)
{
HANDLE hPdhLibrary = NULL;
LPWSTR pMessage = NULL;
hPdhLibrary = LoadLibrary(L"pdh.dll");
if (NULL == hPdhLibrary) {
std::wcout << "LoadLibrary failed with " << GetLastError() << '\n';
return;
}
if (!FormatMessage(FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_ARGUMENT_ARRAY,
hPdhLibrary, status, 0, (LPWSTR)&pMessage, 0, NULL)) {
std::wcout << "Format message failed with " << std::hex << GetLastError() << '\n';
return;
}
std::wcout << pMessage << '\n';
LocalFree(pMessage);
}