icinga2/lib/icinga/perfdatawriter.cpp

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/******************************************************************************
* 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. *
******************************************************************************/
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#include "icinga/perfdatawriter.h"
#include "icinga/checkresultmessage.h"
#include "icinga/service.h"
#include "icinga/macroprocessor.h"
#include "icinga/icingaapplication.h"
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#include "base/dynamictype.h"
#include "base/objectlock.h"
#include "base/logger_fwd.h"
#include "base/convert.h"
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#include "base/utility.h"
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#include "base/application.h"
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#include <boost/smart_ptr/make_shared.hpp>
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using namespace icinga;
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REGISTER_TYPE(PerfdataWriter);
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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);
}
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void PerfdataWriter::OnAttributeChanged(const String& name)
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{
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ASSERT(!OwnsLock());
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if (name == "rotation_interval") {
m_RotationTimer->SetInterval(GetRotationInterval());
}
}
void PerfdataWriter::Start(void)
{
m_Endpoint = Endpoint::MakeEndpoint("perfdata_" + GetName(), false);
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m_Endpoint->RegisterTopicHandler("checker::CheckResult",
boost::bind(&PerfdataWriter::CheckResultRequestHandler, this, _3));
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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;
std::vector<MacroResolver::Ptr> resolvers;
resolvers.push_back(service);
resolvers.push_back(service->GetHost());
resolvers.push_back(IcingaApplication::GetInstance());
String line = MacroProcessor::ResolveMacros(GetFormatTemplate(), resolvers, cr);
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ObjectLock olock(this);
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if (!m_OutputFile.good())
return;
m_OutputFile << line << "\n";
}
void PerfdataWriter::RotateFile(void)
{
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ObjectLock olock(this);
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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())
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Log(LogWarning, "icinga", "Could not open perfdata file '" + tempFile + "' for writing. Perfdata will be lost.");
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}
void PerfdataWriter::RotationTimerHandler(void)
{
RotateFile();
}