Implement CLR-based checks.

contrib/icinga2clr.cs

@@ -0,0 +1,44 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2014 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.             *
+ ******************************************************************************/
+
+using System;
+using System.Collections;
+
+namespace Icinga
+{
+	public enum ServiceState
+	{
+		ServiceOK,
+		ServiceWarning,
+		ServiceCritical,
+		ServiceUnknown
+	}
+
+	public class CheckResult
+	{
+		public ServiceState State;
+		public String Output;
+		public String PerformanceData;
+	}
+
+	public interface ICheckPlugin
+	{
+		CheckResult Check(Hashtable args);
+	}
+}

itl/command.conf

@@ -35,6 +35,10 @@ template CheckCommand "agent-check-command" {
 	methods.execute = "AgentCheck"
 }
 
+template CheckCommand "clr-check-command" {
+	methods.execute = "ClrCheck"
+}
+
 template NotificationCommand "plugin-notification-command" {
 	methods.execute = "PluginNotification"
 }

lib/methods/CMakeLists.txt

@@ -15,10 +15,16 @@
 # along with this program; if not, write to the Free Software Foundation
 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 
+if(MSVC)
+  set(WindowsSources clrchecktask.cpp)
+else()
+  set(WindowsSources "")
+endif()
+
 add_library(methods SHARED
   castfuncs.cpp icingachecktask.cpp nullchecktask.cpp nulleventtask.cpp
   pluginchecktask.cpp plugineventtask.cpp pluginnotificationtask.cpp
-  randomchecktask.cpp timeperiodtask.cpp
+  randomchecktask.cpp timeperiodtask.cpp ${WindowsSources}
 )
 
 target_link_libraries(methods ${Boost_LIBRARIES} base config icinga)

lib/methods/clrchecktask.cpp

@@ -0,0 +1,205 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2014 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 "methods/clrchecktask.h"
+#include "icinga/pluginutility.h"
+#include "icinga/checkcommand.h"
+#include "icinga/macroprocessor.h"
+#include "icinga/icingaapplication.h"
+#include "base/dynamictype.h"
+#include "base/logger_fwd.h"
+#include "base/scriptfunction.h"
+#include "base/utility.h"
+#include "base/process.h"
+#include <boost/algorithm/string/classification.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <boost/foreach.hpp>
+#include <objbase.h>
+#include <mscoree.h>
+
+#import "mscorlib.tlb"
+#pragma comment(lib, "mscoree.lib")
+
+using namespace icinga;
+
+REGISTER_SCRIPTFUNCTION(ClrCheck,  &ClrCheckTask::ScriptFunc);
+
+static boost::once_flag l_OnceFlag = BOOST_ONCE_INIT;
+
+static boost::mutex l_ObjectsMutex;
+static std::map<Checkable::Ptr, variant_t> l_Objects;
+
+static mscorlib::_AppDomainPtr l_AppDomain;
+
+static void InitializeClr(void)
+{
+	ICorRuntimeHost *runtimeHost;
+
+	if (FAILED(CorBindToRuntimeEx(NULL, NULL,
+	    STARTUP_LOADER_OPTIMIZATION_SINGLE_DOMAIN | STARTUP_CONCURRENT_GC,
+	    CLSID_CorRuntimeHost, IID_ICorRuntimeHost, (void **)&runtimeHost))) {
+		return;
+	}
+
+	runtimeHost->Start();
+
+	IUnknownPtr punkAppDomain = NULL;
+	runtimeHost->GetDefaultDomain(&punkAppDomain);
+
+	punkAppDomain->QueryInterface(__uuidof(mscorlib::_AppDomain), (void **)&l_AppDomain);
+
+	runtimeHost->Release();
+}
+
+static variant_t CreateClrType(const String& assemblyName, const String& typeName)
+{
+	boost::call_once(l_OnceFlag, &InitializeClr);
+
+	try {
+		mscorlib::_ObjectHandlePtr pObjectHandle;
+		pObjectHandle = l_AppDomain->CreateInstanceFrom(assemblyName.CStr(), typeName.CStr());
+
+		return pObjectHandle->Unwrap();
+	} catch (_com_error& error) {
+		BOOST_THROW_EXCEPTION(std::runtime_error("Could not load .NET type: " + String(error.Description())));
+	}
+}
+
+static variant_t InvokeClrMethod(const variant_t& vtObject, const String& methodName, const Dictionary::Ptr& args)
+{
+	CLSID clsid;
+	HRESULT hr = CLSIDFromProgID(L"System.Collections.Hashtable", &clsid);
+	
+	mscorlib::IDictionaryPtr pHashtable;
+	CoCreateInstance(clsid, NULL, CLSCTX_ALL, __uuidof(mscorlib::IDictionary), (void **)&pHashtable);
+
+	ObjectLock olock(args);
+	BOOST_FOREACH(const Dictionary::Pair& kv, args) {
+		String value = kv.second;
+		pHashtable->Add(kv.first.CStr(), value.CStr());
+	}
+		
+	mscorlib::_ObjectPtr pObject;
+	vtObject.pdispVal->QueryInterface(__uuidof(mscorlib::_Object), (void**)&pObject);
+	mscorlib::_TypePtr pType = pObject->GetType();
+
+	SAFEARRAY *psa = SafeArrayCreateVector(VT_VARIANT, 0, 1);
+
+	variant_t vtHashtable = static_cast<IUnknown *>(pHashtable);
+	LONG idx = 0;
+	SafeArrayPutElement(psa, &idx, &vtHashtable);
+
+	variant_t result = pType->InvokeMember_3(methodName.CStr(),
+		mscorlib::BindingFlags_InvokeMethod,
+		NULL,
+		vtObject,
+		psa);
+
+	SafeArrayDestroy(psa);
+
+	return result;
+}
+
+static void FillCheckResult(const CheckResult::Ptr& cr, variant_t vtResult)
+{
+	mscorlib::_ObjectPtr pObject;
+	vtResult.pdispVal->QueryInterface(__uuidof(mscorlib::_Object), (void**)&pObject);
+	mscorlib::_TypePtr pType = pObject->GetType();
+
+	SAFEARRAY *psa = SafeArrayCreateVector(VT_VARIANT, 0, 0);
+	int lState = pType->InvokeMember_3("State",
+		mscorlib::BindingFlags_GetField,
+		NULL,
+		vtResult,
+		psa);
+	cr->SetState(static_cast<ServiceState>(lState));
+	bstr_t sOutput = pType->InvokeMember_3("Output",
+		mscorlib::BindingFlags_GetField,
+		NULL,
+		vtResult,
+		psa);
+	cr->SetOutput(static_cast<const char *>(sOutput));
+	bstr_t sPerformanceData = pType->InvokeMember_3("PerformanceData",
+		mscorlib::BindingFlags_GetField,
+		NULL,
+		vtResult,
+		psa);
+	SafeArrayDestroy(psa);
+	cr->SetPerformanceData(static_cast<const char *>(sPerformanceData));
+}
+
+void ClrCheckTask::ScriptFunc(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr)
+{
+	CheckCommand::Ptr commandObj = checkable->GetCheckCommand();
+	Value raw_command = commandObj->GetCommandLine();
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	MacroProcessor::ResolverList resolvers;
+	if (service)
+		resolvers.push_back(std::make_pair("service", service));
+	resolvers.push_back(std::make_pair("host", host));
+	resolvers.push_back(std::make_pair("command", commandObj));
+	resolvers.push_back(std::make_pair("icinga", IcingaApplication::GetInstance()));
+
+	Dictionary::Ptr envMacros = make_shared<Dictionary>();
+
+	Dictionary::Ptr env = commandObj->GetEnv();
+
+	if (env) {
+		ObjectLock olock(env);
+		BOOST_FOREACH(const Dictionary::Pair& kv, env) {
+			String name = kv.second;
+
+			Value value = MacroProcessor::ResolveMacros(name, resolvers, checkable->GetLastCheckResult());
+
+			envMacros->Set(kv.first, value);
+		}
+	}
+
+	variant_t vtObject;
+
+	{
+		boost::mutex::scoped_lock lock(l_ObjectsMutex);
+
+		std::map<Checkable::Ptr, variant_t>::iterator it = l_Objects.find(checkable);
+
+		if (it != l_Objects.end()) {
+			vtObject = it->second;
+		} else {
+			String clr_assembly = MacroProcessor::ResolveMacros("$clr_assembly$", resolvers, checkable->GetLastCheckResult());
+			String clr_type = MacroProcessor::ResolveMacros("$clr_type$", resolvers, checkable->GetLastCheckResult());
+
+			vtObject = CreateClrType(clr_assembly, clr_type);
+			l_Objects[checkable] = vtObject;
+		}
+	}
+
+	try {
+		variant_t vtResult = InvokeClrMethod(vtObject, "Check", envMacros);
+		FillCheckResult(cr, vtResult);
+		checkable->ProcessCheckResult(cr);
+	} catch (_com_error& error) {
+		cr->SetOutput("Failed to invoke .NET method: " + String(error.Description()));
+		cr->SetState(ServiceUnknown);
+		checkable->ProcessCheckResult(cr);
+	}
+}

lib/methods/clrchecktask.h

@@ -0,0 +1,49 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2014 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.             *
+ ******************************************************************************/
+
+#ifndef CLRCHECKTASK_H
+#define CLRCHECKTASK_H
+
+#include "methods/i2-methods.h"
+#include "base/process.h"
+#include "icinga/service.h"
+
+namespace icinga
+{
+
+/**
+ * Implements service checks based CLR libraries.
+ *
+ * @ingroup methods
+ */
+class I2_METHODS_API ClrCheckTask
+{
+public:
+	static void ScriptFunc(const Checkable::Ptr& service, const CheckResult::Ptr& cr);
+
+private:
+	ClrCheckTask(void);
+
+	static void ProcessFinishedHandler(const Checkable::Ptr& service, const CheckResult::Ptr& cr, const ProcessResult& pr);
+
+};
+
+}
+
+#endif /* CLRCHECKTASK_H */

lib/methods/pluginchecktask.cpp

@@ -58,6 +58,7 @@ void PluginCheckTask::ScriptFunc(const Checkable::Ptr& checkable, const CheckRes
 	Dictionary::Ptr env = commandObj->GetEnv();
 
 	if (env) {
+		ObjectLock olock(env);
 		BOOST_FOREACH(const Dictionary::Pair& kv, env) {
 			String name = kv.second;
 

lib/methods/plugineventtask.cpp

@@ -55,6 +55,7 @@ void PluginEventTask::ScriptFunc(const Checkable::Ptr& checkable)
 	Dictionary::Ptr env = commandObj->GetEnv();
 
 	if (env) {
+		ObjectLock olock(env);
 		BOOST_FOREACH(const Dictionary::Pair& kv, env) {
 			String name = kv.second;
 

lib/methods/pluginnotificationtask.cpp

@@ -70,6 +70,7 @@ void PluginNotificationTask::ScriptFunc(const Notification::Ptr& notification, c
 	Dictionary::Ptr env = commandObj->GetEnv();
 
 	if (env) {
+		ObjectLock olock(env);
 		BOOST_FOREACH(const Dictionary::Pair& kv, env) {
 			String name = kv.second;