Change plugins output and update README

In their perfdata the plugins will now use absolute values for percentage thresholds.
Also the check_disks output is now more similar to the one of nagios/check_disk.
The README has also been improved.

refs #7886 #8060

plugins/README.md

@@ -1,26 +1,51 @@
-##Icinga 2 plugins for Windows##
-This collection of plugins is intended to provide basic functionality checks on windows machines. They (mostly) conform to the [nagios developer guidelines](https://nagios-plugins.org/doc/guidelines.html), returning adequate exit codes and printing a pertinent string with performance data.
+## Icinga 2 plugins for Windows
+
+This collection of plugins is intended to provide basic functionality checks on windows machines.  
+They (mostly) conform to the [nagios developer guidelines](https://nagios-plugins.org/doc/guidelines.html), 
+returning adequate exit codes and printing a pertinent string with performance data.
+
+
+### Intallation
 
-###Intallation###
 The plugins are installed as part of Icinga 2.
 
-###Requirements###
+
+### Requirements
+
 - Boost 1.41.0
 - Windows Vista, Windows Server 2008 or newer
 
-###Usage###
-Call a plugin with the "--help" option to receive information about its usage.
 
-###License###
+### Usage
+
+Call a plugin with the "--help" option to receive information about its usage.  
+Most of them don't need any parameters to but all of them have a -w (warning) and -c (critical) option. 
+Those accept, if not otherwise specified, value or percentage based thresholds or threshold ranges.  
+
+A few examples:  
+*./check_command.exe -w 12 -c !60%*  
+Adds a warning threshold of 12 and an inversed critical threshold of 60%  
+
+*./check_command.exe -w ![20%-80%] -c [0%-40%]*  
+The warning threshold is outside of 20% to 80% and the critical threshold is the range from 0% to 40%.  
+A critical state always overwrites a warning state, meaning the check would be critical with a value of 30%.
+
+
+### License
 
 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 tems of the GNU General Public License as published by the Free Software Foundation; either version 2
+This program is free software; you can redistribute it and/or  
+modify it under the tems 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.                               
 
+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
+ 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.

plugins/check_disk.cpp

@@ -27,7 +27,7 @@
 
 #include "boost/program_options.hpp"
 
-#define VERSION 1.0
+#define VERSION 1.1
 
 namespace po = boost::program_options;
 
@@ -209,48 +209,46 @@ int printOutput(printInfoStruct& printInfo, vector<drive>& vDrives)
 {
 	if (debug)
 		wcout << L"Constructing output string" << endl;
-	state state = OK;
-	double tCap = 0, tFree = 0;
-	std::wstringstream perf, prePerf;
+
+	vector<wstring> wsDrives, wsPerf;
 	wstring unit = BunitStr(printInfo.unit);
 
-	for (vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); ++it) {
-		tCap += it->cap; tFree += it->free;
-		perf << std::fixed << L" " << it->name << L"=" << removeZero(it->free) << unit << L";"
-			<< printInfo.warn.pString() << L";" << printInfo.crit.pString() << L";0;" << removeZero(tCap);
+	state state = OK;
+	wstring output = L"DISK OK - free space:";
+
+	double tCap = 0, tFree = 0;
+	for (vector<drive>::iterator it = vDrives.begin(); it != vDrives.end(); it++) {
+		tCap += it->cap;
+		tFree += it->free;
+		wsDrives.push_back(it->name + L" " + removeZero(it->free) + L" " + unit + L" (" + 
+						   removeZero(std::round(it->free/it->cap * 100.0)) + L"%); ");
+		wsPerf.push_back(L" " + it->name + L"=" + removeZero(it->free) + unit + L";" + 
+						 printInfo.warn.pString(it->cap) + L";" + printInfo.crit.pString(it->cap) + L";0;"
+						 + removeZero(it->cap));
 	}
 
-	prePerf << L" | disk=" << removeZero(tFree) << unit << L";" << printInfo.warn.pString() << L";"
-		<< printInfo.crit.pString() << L";0;" << removeZero(tCap);
-
-	if (printInfo.warn.perc) {
-		if (printInfo.warn.rend((tFree / tCap) * 100.0))
-			state = WARNING;
-	} else {
-		if (printInfo.warn.rend(tFree))
+	if (printInfo.warn.rend(tFree, tCap)) {
 		state = WARNING;
+		output = L"DISK WARNING - free space:";
 	}
 
-	if (printInfo.crit.perc) {
-		if (printInfo.crit.rend((tFree / tCap) * 100.0))
-			state = CRITICAL;
-	} else {
-		if (printInfo.crit.rend(tFree))
+	if (printInfo.crit.rend(tFree, tCap)) {
 		state = CRITICAL;
+		output = L"DISK CRITICAL - free space:";
 	}
 
-	switch (state) {
-	case OK:
-		wcout << L"DISK OK " << std::fixed << removeZero(tFree) << unit << prePerf.str() << perf.str() << endl;
-		break;
-	case WARNING:
-		wcout << L"DISK WARNING " << std::fixed << removeZero(tFree) << unit << prePerf.str() << perf.str() << endl;
-		break;
-	case CRITICAL:
-		wcout << L"DISK CRITICAL " << std::fixed << removeZero(tFree) << unit << prePerf.str() << perf.str() << endl;
-		break;
-	}
+	wcout << output;
+	if (vDrives.size() > 1)
+		wcout << L"Total " << tFree << unit << L" (" << removeZero(std::round(tFree/tCap * 100.0)) << L"%); ";
 
+	for (vector<wstring>::const_iterator it = wsDrives.begin(); it != wsDrives.end(); it++)
+		wcout << *it;
+	wcout << L"|";
+
+	for (vector<wstring>::const_iterator it = wsPerf.begin(); it != wsPerf.end(); it++)
+		wcout << *it;
+
+	wcout << endl;
 	return state;
 }
 
@@ -369,11 +367,11 @@ bool getFreeAndCap(drive& drive, const Bunit& unit)
 		wcout << L"\tcap: " << tempFree.QuadPart << endl;
 	drive.cap = round((tempTotal.QuadPart / pow(1024.0, unit)));
 	if (debug)
-		wcout << L"\tAfter converion: " << drive.cap << endl
+		wcout << L"\tAfter conversion: " << drive.cap << endl
 		<< L"\tfree: " << tempFree.QuadPart << endl;
 	drive.free = round((tempFree.QuadPart / pow(1024.0, unit)));
 	if (debug)
-		wcout << L"\tAfter converion: " << drive.free << endl << endl;
+		wcout << L"\tAfter conversion: " << drive.free << endl << endl;
 
 	return TRUE;
 }

plugins/thresholds.cpp

@@ -86,39 +86,44 @@ threshold::threshold(const wstring& stri)
 }
 
 //return TRUE if the threshold is broken
-bool threshold::rend(const double b)
+bool threshold::rend(const double val, const double max)
 {
+	double upperAbs = upper;
+	double lowerAbs = lower;
+
+	if (perc) {
+		upperAbs = upper / 100 * max;
+		lowerAbs = lower / 100 * max;
+	}
+
 	if (!set)
 		return set;
-	if (lower == upper)
-		return b > upper == legal;
+	if (lowerAbs == upperAbs)
+		return val > upperAbs == legal;
 	else
-		return (b < lower || upper < b) != legal;
+		return (val < lowerAbs || upperAbs < val) != legal;
 }
 
 //returns a printable string of the threshold
-std::wstring threshold::pString()
+std::wstring threshold::pString(const double max)
 {
 	if (!set)
 		return L"";
+	//transform percentages to abolute values
+	double lowerAbs = lower/100 * max;
+	double upperAbs = upper/100 * max;
 
-	std::wstring s, lowerStr = removeZero(lower), upperStr = removeZero(upper);
+	std::wstring s, lowerStr = removeZero(lowerAbs), 
+					upperStr = removeZero(upperAbs);
 	if (!legal)
 		s.append(L"!");
 
 	if (lower != upper) {
-		if (perc)
-			s.append(L"[").append(lowerStr).append(L"%").append(L"-")
-			.append(upperStr).append(L"%").append(L"]");
-		else
 		s.append(L"[").append(lowerStr).append(L"-")
 		.append(upperStr).append(L"]");
-	} else {
-		if (perc)
-			s = lowerStr.append(L"%");
-		else
+	} else 
 		s = lowerStr;
-	}
+	
 	return s;
 }
 

plugins/thresholds.h

@@ -40,10 +40,10 @@ public:
 	threshold(const std::wstring&);
 
 	//return TRUE if the threshold is broken
-	bool rend(const double b);
+	bool rend(const double val, const double max = 100);
 
 	//returns a printable string of the threshold
-	std::wstring pString();
+	std::wstring pString(const double max = 100);
 
 };
 std::wstring removeZero(double);