diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
commit | 0915b3ef56dfac3113cce55a59a5765dc94976be (patch) | |
tree | a8fea11d50b4f083e1bf0f90025ece7f0824784a /plugins/check_swap.cpp | |
parent | Initial commit. (diff) | |
download | icinga2-upstream.tar.xz icinga2-upstream.zip |
Adding upstream version 2.13.6.upstream/2.13.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/check_swap.cpp')
-rw-r--r-- | plugins/check_swap.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/plugins/check_swap.cpp b/plugins/check_swap.cpp new file mode 100644 index 0000000..dc08f3b --- /dev/null +++ b/plugins/check_swap.cpp @@ -0,0 +1,238 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#include "plugins/thresholds.hpp" +#include <boost/program_options.hpp> +#include <iostream> +#include <shlwapi.h> +#include <Psapi.h> +#include <vector> + +#define VERSION 1.0 + +namespace po = boost::program_options; + +struct printInfoStruct +{ + threshold warn; + threshold crit; + double tSwap; + double aSwap; + double percentFree; + Bunit unit = BunitMB; + bool showUsed; +}; + +struct pageFileInfo +{ + SIZE_T totalSwap; + SIZE_T availableSpwap; +}; + +static bool l_Debug; + +BOOL EnumPageFilesProc(LPVOID pContext, PENUM_PAGE_FILE_INFORMATION pPageFileInfo, LPCWSTR lpFilename) { + std::vector<pageFileInfo>* pageFile = static_cast<std::vector<pageFileInfo>*>(pContext); + SYSTEM_INFO systemInfo; + + GetSystemInfo(&systemInfo); + + // pPageFileInfo output is in pages, we need to multiply it by the page size + pageFile->push_back({ pPageFileInfo->TotalSize * systemInfo.dwPageSize, (pPageFileInfo->TotalSize - pPageFileInfo->TotalInUse) * systemInfo.dwPageSize }); + + return TRUE; +} + +static int parseArguments(int ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo) +{ + WCHAR namePath[MAX_PATH]; + GetModuleFileName(NULL, namePath, MAX_PATH); + WCHAR *progName = PathFindFileName(namePath); + + po::options_description desc; + + desc.add_options() + ("help,h", "Print help message and exit") + ("version,V", "Print version and exit") + ("debug,d", "Verbose/Debug output") + ("warning,w", po::wvalue<std::wstring>(), "Warning threshold") + ("critical,c", po::wvalue<std::wstring>(), "Critical threshold") + ("unit,u", po::wvalue<std::wstring>(), "The unit to use for display (default MB)") + ("show-used,U", "Show used swap instead of the free swap") + ; + + po::wcommand_line_parser 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 (const std::exception& e) { + std::cout << e.what() << '\n' << desc << '\n'; + return 3; + } + + if (vm.count("help")) { + std::wcout << progName << " Help\n\tVersion: " << VERSION << '\n'; + wprintf( + L"%s is a simple program to check a machines swap in percent.\n" + L"You can use the following options to define its behaviour:\n\n", progName); + std::cout << desc; + wprintf( + L"\nIt will then output a string looking something like this:\n\n" + L"\tSWAP WARNING - 20%% free | swap=2000B;3000;500;0;10000\n\n" + L"\"SWAP\" being the type of the check, \"WARNING\" the returned status\n" + L"and \"20%%\" is the returned value.\n" + L"The performance data is found behind the \"|\", in order:\n" + L"returned value, warning threshold, critical threshold, minimal value and,\n" + L"if applicable, the maximal value. Performance data will only be displayed when\n" + L"you set at least one threshold\n\n" + L"%s' exit codes denote the following:\n" + L" 0\tOK,\n\tNo Thresholds were broken or the programs check part was not executed\n" + L" 1\tWARNING,\n\tThe warning, but not the critical threshold was broken\n" + L" 2\tCRITICAL,\n\tThe critical threshold was broken\n" + L" 3\tUNKNOWN, \n\tThe program experienced an internal or input error\n\n" + L"Threshold syntax:\n\n" + L"-w THRESHOLD\n" + L"warn if threshold is broken, which means VALUE > THRESHOLD\n" + L"(unless stated differently)\n\n" + L"-w !THRESHOLD\n" + L"inverts threshold check, VALUE < THRESHOLD (analogous to above)\n\n" + L"-w [THR1-THR2]\n" + L"warn is VALUE is inside the range spanned by THR1 and THR2\n\n" + L"-w ![THR1-THR2]\n" + L"warn if VALUE is outside the range spanned by THR1 and THR2\n\n" + L"-w THRESHOLD%%\n" + L"if the plugin accepts percentage based thresholds those will be used.\n" + L"Does nothing if the plugin does not accept percentages, or only uses\n" + L"percentage thresholds. Ranges can be used with \"%%\", but both range values need\n" + L"to end with a percentage sign.\n\n" + L"All of these options work with the critical threshold \"-c\" too.\n" + , progName); + std::cout << '\n'; + return 0; + } + + if (vm.count("version")) + std::wcout << L"Version: " << VERSION << '\n'; + + if (vm.count("warning")) { + try { + printInfo.warn = threshold(vm["warning"].as<std::wstring>()); + } catch (const std::invalid_argument& e) { + std::cout << e.what() << '\n'; + return 3; + } + printInfo.warn.legal = !printInfo.warn.legal; + } + + if (vm.count("critical")) { + try { + printInfo.crit = threshold(vm["critical"].as<std::wstring>()); + } catch (const std::invalid_argument& e) { + std::cout << e.what() << '\n'; + return 3; + } + printInfo.crit.legal = !printInfo.crit.legal; + } + + l_Debug = vm.count("debug") > 0; + + if (vm.count("unit")) { + try { + printInfo.unit = parseBUnit(vm["unit"].as<std::wstring>()); + } catch (const std::invalid_argument& e) { + std::cout << e.what() << '\n'; + return 3; + } + } + + if (vm.count("show-used")) { + printInfo.showUsed = true; + printInfo.warn.legal = true; + printInfo.crit.legal = true; + } + + return -1; +} + +static int printOutput(printInfoStruct& printInfo) +{ + if (l_Debug) + std::wcout << L"Constructing output string" << '\n'; + + state state = OK; + + std::wcout << L"SWAP "; + + double currentValue; + + if (!printInfo.showUsed) + currentValue = printInfo.aSwap; + else + currentValue = printInfo.tSwap - printInfo.aSwap; + + if (printInfo.warn.rend(currentValue, printInfo.tSwap)) + state = WARNING; + + if (printInfo.crit.rend(currentValue, printInfo.tSwap)) + state = CRITICAL; + + std::wcout << stateToString(state) << " - "; + + if (!printInfo.showUsed) + std::wcout << printInfo.percentFree << L"% free "; + else + std::wcout << 100 - printInfo.percentFree << L"% used "; + + std::wcout << "| 'swap'=" << currentValue << BunitStr(printInfo.unit) << L";" + << printInfo.warn.pString(printInfo.tSwap) << L";" << printInfo.crit.pString(printInfo.tSwap) + << L";0;" << printInfo.tSwap << '\n'; + + return state; +} + +static int check_swap(printInfoStruct& printInfo) +{ + // Needs explicit cast: http://msinilo.pl/blog2/post/p1348/ + PENUM_PAGE_FILE_CALLBACKW pageFileCallback = (PENUM_PAGE_FILE_CALLBACKW)EnumPageFilesProc; + std::vector<pageFileInfo> pageFiles; + + if(!EnumPageFilesW(pageFileCallback, &pageFiles)) { + printErrorInfo(); + return 3; + } + + for (int i = 0; i < pageFiles.size(); i++) { + printInfo.tSwap += round(pageFiles.at(i).totalSwap / pow(1024.0, printInfo.unit)); + printInfo.aSwap += round(pageFiles.at(i).availableSpwap / pow(1024.0, printInfo.unit)); + } + + if (printInfo.aSwap > 0 && printInfo.tSwap > 0) + printInfo.percentFree = 100.0 * printInfo.aSwap / printInfo.tSwap; + else + printInfo.percentFree = 0; + + return -1; +} + +int wmain(int argc, WCHAR **argv) +{ + printInfoStruct printInfo = { }; + po::variables_map vm; + + int ret = parseArguments(argc, argv, vm, printInfo); + if (ret != -1) + return ret; + + ret = check_swap(printInfo); + if (ret != -1) + return ret; + + return printOutput(printInfo); +} |