Implement the PerfdataWriter class.

lib/icinga/Makefile.am

@@ -29,6 +29,8 @@ libicinga_la_SOURCES =  \
 	notificationrequestmessage.h \
 	nullchecktask.cpp \
 	nullchecktask.h \
+	perfdatawriter.cpp \
+	perfdatawriter.h \
 	pluginchecktask.cpp \
 	pluginchecktask.h \
 	pluginnotificationtask.cpp \

lib/icinga/i2-icinga.h

@@ -69,4 +69,6 @@ using boost::algorithm::is_any_of;
 
 #include "api.h"
 
+#include "perfdatawriter.h"
+
 #endif /* I2ICINGA_H */

lib/icinga/notification.cpp

@@ -43,9 +43,6 @@ Notification::Ptr Notification::GetByName(const String& name)
 {
 	DynamicObject::Ptr configObject = DynamicObject::GetObject("Notification", name);
 
-	if (!configObject)
-		BOOST_THROW_EXCEPTION(invalid_argument("Notification '" + name + "' does not exist."));
-
 	return dynamic_pointer_cast<Notification>(configObject);
 }
 

lib/icinga/perfdatawriter.cpp

@@ -0,0 +1,149 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012 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 "i2-icinga.h"
+
+using namespace icinga;
+
+REGISTER_TYPE(PerfdataWriter, NULL);
+
+PerfdataWriter::PerfdataWriter(const Dictionary::Ptr& properties)
+	: DynamicObject(properties)
+{
+	RegisterAttribute("path_prefix", Attribute_Config, &m_PathPrefix);
+	RegisterAttribute("format_template", Attribute_Config, &m_FormatTemplate);
+	RegisterAttribute("rotation_interval", Attribute_Config, &m_RotationInterval);
+}
+
+PerfdataWriter::~PerfdataWriter(void)
+{
+}
+
+void PerfdataWriter::OnAttributeChanged(const String& name, const Value& oldValue)
+{
+	if (name == "rotation_interval") {
+		ObjectLock olock(this);
+		m_RotationTimer->SetInterval(GetRotationInterval());
+	}
+}
+
+void PerfdataWriter::Start(void)
+{
+	m_Endpoint = Endpoint::MakeEndpoint("perfdata_" + GetName(), false);
+
+	{
+		ObjectLock olock(m_Endpoint);
+		m_Endpoint->RegisterTopicHandler("checker::CheckResult",
+		    boost::bind(&PerfdataWriter::CheckResultRequestHandler, this, _3));
+	}
+
+	m_RotationTimer = boost::make_shared<Timer>();
+	m_RotationTimer->OnTimerExpired.connect(boost::bind(&PerfdataWriter::RotationTimerHandler, this));
+	m_RotationTimer->SetInterval(GetRotationInterval());
+	m_RotationTimer->Start();
+
+	RotateFile();
+}
+
+PerfdataWriter::Ptr PerfdataWriter::GetByName(const String& name)
+{
+	DynamicObject::Ptr configObject = DynamicObject::GetObject("PerfdataWriter", name);
+
+	return dynamic_pointer_cast<PerfdataWriter>(configObject);
+}
+
+String PerfdataWriter::GetPathPrefix(void) const
+{
+	if (!m_PathPrefix.IsEmpty())
+		return m_PathPrefix;
+	else
+		return Application::GetLocalStateDir() + "/cache/icinga2/perfdata/perfdata";
+}
+
+String PerfdataWriter::GetFormatTemplate(void) const
+{
+	if (!m_FormatTemplate.IsEmpty()) {
+		return m_FormatTemplate;
+	} else {
+		return "DATATYPE::SERVICEPERFDATA\t"
+			"TIMET::$TIMET$\t"
+			"HOSTNAME::$HOSTNAME$\t"
+			"SERVICEDESC::$SERVICEDESC$\t"
+			"SERVICEPERFDATA::$SERVICEPERFDATA$\t"
+			"SERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\t"
+			"HOSTSTATE::$HOSTSTATE$\t"
+			"HOSTSTATETYPE::$HOSTSTATETYPE$\t"
+			"SERVICESTATE::$SERVICESTATE$\t"
+			"SERVICESTATETYPE::$SERVICESTATETYPE$";
+	}
+}
+
+double PerfdataWriter::GetRotationInterval(void) const
+{
+	if (!m_RotationInterval.IsEmpty())
+		return m_RotationInterval;
+	else
+		return 30;
+}
+
+void PerfdataWriter::CheckResultRequestHandler(const RequestMessage& request)
+{
+	CheckResultMessage params;
+	if (!request.GetParams(&params))
+		return;
+
+	String svcname = params.GetService();
+	Service::Ptr service = Service::GetByName(svcname);
+
+	Dictionary::Ptr cr = params.GetCheckResult();
+	if (!cr)
+		return;
+
+	Dictionary::Ptr macros = cr->Get("macros");
+	String line = MacroProcessor::ResolveMacros(GetFormatTemplate(), macros);
+
+	if (!m_OutputFile.good())
+		return;
+
+	ObjectLock olock(this);
+	m_OutputFile << line << "\n";
+}
+
+void PerfdataWriter::RotateFile(void)
+{
+	String tempFile = GetPathPrefix();
+
+	if (m_OutputFile.good()) {
+		m_OutputFile.close();
+
+		String finalFile = GetPathPrefix() + "." + Convert::ToString((long)Utility::GetTime());
+		(void) rename(tempFile.CStr(), finalFile.CStr());
+	}
+
+	m_OutputFile.open(tempFile.CStr());
+
+	if (!m_OutputFile.good())
+		Logger::Write(LogWarning, "icinga", "Could not open perfdata file '" + tempFile + "' for writing. Perfdata will be lost.");
+}
+
+void PerfdataWriter::RotationTimerHandler(void)
+{
+	ObjectLock olock(this);
+	RotateFile();
+}

lib/icinga/perfdatawriter.h

@@ -0,0 +1,67 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012 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 PERFDATAWRITER_H
+#define PERFDATAWRITER_H
+
+namespace icinga
+{
+
+/**
+ * An Icinga perfdata writer.
+ *
+ * @ingroup icinga
+ */
+class I2_ICINGA_API PerfdataWriter : public DynamicObject
+{
+public:
+	typedef shared_ptr<PerfdataWriter> Ptr;
+	typedef weak_ptr<PerfdataWriter> WeakPtr;
+
+	PerfdataWriter(const Dictionary::Ptr& properties);
+	~PerfdataWriter(void);
+
+	static PerfdataWriter::Ptr GetByName(const String& name);
+
+	String GetPathPrefix(void) const;
+	String GetFormatTemplate(void) const;
+	double GetRotationInterval(void) const;
+
+protected:
+	virtual void OnAttributeChanged(const String& name, const Value& oldValue);
+	virtual void Start(void);
+
+private:
+	Attribute<String> m_PathPrefix;
+	Attribute<String> m_FormatTemplate;
+	Attribute<double> m_RotationInterval;
+
+	Endpoint::Ptr m_Endpoint;
+	void CheckResultRequestHandler(const RequestMessage& request);
+
+	Timer::Ptr m_RotationTimer;
+	void RotationTimerHandler(void);
+
+	ofstream m_OutputFile;
+	void RotateFile(void);
+};
+
+}
+
+#endif /* PERFDATAWRITER_H */

lib/icinga/service.cpp

@@ -378,6 +378,7 @@ Dictionary::Ptr Service::CalculateDynamicMacros(const Service::Ptr& self)
 		macros->Set("SERVICESTATETYPE", StateTypeToString(self->GetStateType()));
 		macros->Set("SERVICEATTEMPT", self->GetCurrentCheckAttempt());
 		macros->Set("MAXSERVICEATTEMPT", self->GetMaxCheckAttempts());
+		macros->Set("SERVICECHECKCOMMAND", "check_i2");
 
 		cr = self->GetLastCheckResult();
 	}