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icinga2/components/compat/compatlogger.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2013 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 "compat/compatlogger.h"
#include "icinga/service.h"
#include "icinga/checkcommand.h"
#include "icinga/eventcommand.h"
#include "icinga/notification.h"
#include "icinga/macroprocessor.h"
#include "icinga/externalcommandprocessor.h"
#include "icinga/compatutility.h"
#include "config/configcompilercontext.h"
#include "base/dynamictype.h"
#include "base/objectlock.h"
#include "base/logger_fwd.h"
#include "base/exception.h"
#include "base/convert.h"
#include "base/application.h"
#include "base/utility.h"
#include "base/scriptfunction.h"
#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
using namespace icinga;
REGISTER_TYPE(CompatLogger);
REGISTER_SCRIPTFUNCTION(ValidateRotationMethod, &CompatLogger::ValidateRotationMethod);
CompatLogger::CompatLogger(void)
: m_LastRotation(0)
{ }
/**
* @threadsafety Always.
*/
void CompatLogger::Start(void)
{
DynamicObject::Start();
Service::OnNewCheckResult.connect(bind(&CompatLogger::CheckResultHandler, this, _1, _2));
Service::OnNotificationSentToUser.connect(bind(&CompatLogger::NotificationSentHandler, this, _1, _2, _3, _4, _5, _6, _7));
Service::OnFlappingChanged.connect(bind(&CompatLogger::FlappingHandler, this, _1, _2));
Service::OnDowntimeTriggered.connect(boost::bind(&CompatLogger::TriggerDowntimeHandler, this, _1, _2));
Service::OnDowntimeRemoved.connect(boost::bind(&CompatLogger::RemoveDowntimeHandler, this, _1, _2));
Service::OnEventCommandExecuted.connect(bind(&CompatLogger::EventCommandHandler, this, _1));
ExternalCommandProcessor::OnNewExternalCommand.connect(boost::bind(&CompatLogger::ExternalCommandHandler, this, _2, _3));
m_RotationTimer = make_shared<Timer>();
m_RotationTimer->OnTimerExpired.connect(boost::bind(&CompatLogger::RotationTimerHandler, this));
m_RotationTimer->Start();
ReopenFile(false);
ScheduleNextRotation();
}
/**
* @threadsafety Always.
*/
void CompatLogger::CheckResultHandler(const Service::Ptr& service, const CheckResult::Ptr &cr)
{
Host::Ptr host = service->GetHost();
Dictionary::Ptr vars_after = cr->GetVarsAfter();
long state_after = vars_after->Get("state");
long stateType_after = vars_after->Get("state_type");
long attempt_after = vars_after->Get("attempt");
bool reachable_after = vars_after->Get("reachable");
bool host_reachable_after = vars_after->Get("host_reachable");
Dictionary::Ptr vars_before = cr->GetVarsBefore();
if (vars_before) {
long state_before = vars_before->Get("state");
long stateType_before = vars_before->Get("state_type");
long attempt_before = vars_before->Get("attempt");
bool reachable_before = vars_before->Get("reachable");
if (state_before == state_after && stateType_before == stateType_after &&
attempt_before == attempt_after && reachable_before == reachable_after)
return; /* Nothing changed, ignore this checkresult. */
}
String output;
if (cr)
output = CompatUtility::GetCheckResultOutput(cr);
std::ostringstream msgbuf;
msgbuf << "SERVICE ALERT: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< Service::StateToString(static_cast<ServiceState>(state_after)) << ";"
<< Service::StateTypeToString(static_cast<StateType>(stateType_after)) << ";"
<< attempt_after << ";"
<< output << ""
<< "";
{
ObjectLock olock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST ALERT: "
<< host->GetName() << ";"
<< Host::StateToString(Host::CalculateState(static_cast<ServiceState>(state_after), host_reachable_after)) << ";"
<< Service::StateTypeToString(static_cast<StateType>(stateType_after)) << ";"
<< attempt_after << ";"
<< output << ""
<< "";
{
ObjectLock olock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock olock(this);
Flush();
}
}
/**
* @threadsafety Always.
*/
void CompatLogger::TriggerDowntimeHandler(const Service::Ptr& service, const Downtime::Ptr& downtime)
{
Host::Ptr host = service->GetHost();
if (!downtime)
return;
std::ostringstream msgbuf;
msgbuf << "SERVICE DOWNTIME ALERT: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< "STARTED" << "; "
<< "Service has entered a period of scheduled downtime."
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST DOWNTIME ALERT: "
<< host->GetName() << ";"
<< "STARTED" << "; "
<< "Service has entered a period of scheduled downtime."
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock oLock(this);
Flush();
}
}
/**
* @threadsafety Always.
*/
void CompatLogger::RemoveDowntimeHandler(const Service::Ptr& service, const Downtime::Ptr& downtime)
{
Host::Ptr host = service->GetHost();
if (!downtime)
return;
String downtime_output;
String downtime_state_str;
if (downtime->GetWasCancelled()) {
downtime_output = "Scheduled downtime for service has been cancelled.";
downtime_state_str = "CANCELLED";
} else {
downtime_output = "Service has exited from a period of scheduled downtime.";
downtime_state_str = "STOPPED";
}
std::ostringstream msgbuf;
msgbuf << "SERVICE DOWNTIME ALERT: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< downtime_state_str << "; "
<< downtime_output
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST DOWNTIME ALERT: "
<< host->GetName() << ";"
<< downtime_state_str << "; "
<< downtime_output
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock oLock(this);
Flush();
}
}
/**
* @threadsafety Always.
*/
void CompatLogger::NotificationSentHandler(const Service::Ptr& service, const User::Ptr& user,
NotificationType const& notification_type, CheckResult::Ptr const& cr,
const String& author, const String& comment_text, const String& command_name)
{
Host::Ptr host = service->GetHost();
String notification_type_str = Notification::NotificationTypeToString(notification_type);
String author_comment = "";
if (notification_type == NotificationCustom || notification_type == NotificationAcknowledgement) {
author_comment = author + ";" + comment_text;
}
if (!cr)
return;
String output;
if (cr)
output = CompatUtility::GetCheckResultOutput(cr);
std::ostringstream msgbuf;
msgbuf << "SERVICE NOTIFICATION: "
<< user->GetName() << ";"
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< notification_type_str << " "
<< "(" << Service::StateToString(service->GetState()) << ");"
<< command_name << ";"
<< output << ";"
<< author_comment
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST NOTIFICATION: "
<< user->GetName() << ";"
<< host->GetName() << ";"
<< notification_type_str << " "
<< "(" << Service::StateToString(service->GetState()) << ");"
<< command_name << ";"
<< output << ";"
<< author_comment
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock oLock(this);
Flush();
}
}
/**
* @threadsafety Always.
*/
void CompatLogger::FlappingHandler(const Service::Ptr& service, FlappingState flapping_state)
{
Host::Ptr host = service->GetHost();
String flapping_state_str;
String flapping_output;
switch (flapping_state) {
case FlappingStarted:
flapping_output = "Service appears to have started flapping (" + Convert::ToString(service->GetFlappingCurrent()) + "% change >= " + Convert::ToString(service->GetFlappingThreshold()) + "% threshold)";
flapping_state_str = "STARTED";
break;
case FlappingStopped:
flapping_output = "Service appears to have stopped flapping (" + Convert::ToString(service->GetFlappingCurrent()) + "% change < " + Convert::ToString(service->GetFlappingThreshold()) + "% threshold)";
flapping_state_str = "STOPPED";
break;
case FlappingDisabled:
flapping_output = "Flap detection has been disabled";
flapping_state_str = "DISABLED";
break;
default:
Log(LogCritical, "compat", "Unknown flapping state: " + Convert::ToString(flapping_state));
return;
}
std::ostringstream msgbuf;
msgbuf << "SERVICE FLAPPING ALERT: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< flapping_state_str << "; "
<< flapping_output
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST FLAPPING ALERT: "
<< host->GetName() << ";"
<< flapping_state_str << "; "
<< flapping_output
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock oLock(this);
Flush();
}
}
void CompatLogger::ExternalCommandHandler(const String& command, const std::vector<String>& arguments)
{
std::ostringstream msgbuf;
msgbuf << "EXTERNAL COMMAND: "
<< command << ";"
<< boost::algorithm::join(arguments, ";")
<< "";
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
void CompatLogger::EventCommandHandler(const Service::Ptr& service)
{
Host::Ptr host = service->GetHost();
EventCommand::Ptr event_command = service->GetEventCommand();
String event_command_name = event_command->GetName();
String state = Service::StateToString(service->GetState());
String state_type = Service::StateTypeToString(service->GetStateType());
long current_attempt = service->GetCheckAttempt();
std::ostringstream msgbuf;
msgbuf << "SERVICE EVENT HANDLER: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< state << ";"
<< state_type << ";"
<< current_attempt << ";"
<< event_command_name;
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
if (service == host->GetCheckService()) {
std::ostringstream msgbuf;
msgbuf << "HOST EVENT HANDLER: "
<< host->GetName() << ";"
<< state << ";"
<< state_type << ";"
<< current_attempt << ";"
<< event_command_name;
{
ObjectLock oLock(this);
WriteLine(msgbuf.str());
}
}
{
ObjectLock oLock(this);
Flush();
}
}
void CompatLogger::WriteLine(const String& line)
{
ASSERT(OwnsLock());
if (!m_OutputFile.good())
return;
m_OutputFile << "[" << (long)Utility::GetTime() << "] " << line << "\n";
}
void CompatLogger::Flush(void)
{
ASSERT(OwnsLock());
if (!m_OutputFile.good())
return;
m_OutputFile << std::flush;
}
/**
* @threadsafety Always.
*/
void CompatLogger::ReopenFile(bool rotate)
{
ObjectLock olock(this);
String tempFile = GetLogDir() + "/icinga.log";
if (m_OutputFile) {
m_OutputFile.close();
if (rotate) {
String archiveFile = GetLogDir() + "/archives/icinga-" + Utility::FormatDateTime("%m-%d-%Y-%H", Utility::GetTime()) + ".log";
Log(LogInformation, "compat", "Rotating compat log file '" + tempFile + "' -> '" + archiveFile + "'");
(void) rename(tempFile.CStr(), archiveFile.CStr());
}
}
m_OutputFile.open(tempFile.CStr(), std::ofstream::app);
if (!m_OutputFile.good()) {
Log(LogWarning, "icinga", "Could not open compat log file '" + tempFile + "' for writing. Log output will be lost.");
return;
}
WriteLine("LOG ROTATION: " + GetRotationMethod());
WriteLine("LOG VERSION: 2.0");
BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjects<Host>()) {
Service::Ptr hc = host->GetCheckService();
if (!hc)
continue;
bool reachable = host->IsReachable();
ObjectLock olock(hc);
String output;
CheckResult::Ptr cr = hc->GetLastCheckResult();
if (cr)
output = CompatUtility::GetCheckResultOutput(cr);
std::ostringstream msgbuf;
msgbuf << "CURRENT HOST STATE: "
<< host->GetName() << ";"
<< Host::StateToString(Host::CalculateState(hc->GetState(), reachable)) << ";"
<< Service::StateTypeToString(hc->GetStateType()) << ";"
<< hc->GetCheckAttempt() << ";"
<< output << "";
WriteLine(msgbuf.str());
}
BOOST_FOREACH(const Service::Ptr& service, DynamicType::GetObjects<Service>()) {
Host::Ptr host = service->GetHost();
String output;
CheckResult::Ptr cr = service->GetLastCheckResult();
if (cr)
output = CompatUtility::GetCheckResultOutput(cr);
std::ostringstream msgbuf;
msgbuf << "CURRENT SERVICE STATE: "
<< host->GetName() << ";"
<< service->GetShortName() << ";"
<< Service::StateToString(service->GetState()) << ";"
<< Service::StateTypeToString(service->GetStateType()) << ";"
<< service->GetCheckAttempt() << ";"
<< output << "";
WriteLine(msgbuf.str());
}
Flush();
}
void CompatLogger::ScheduleNextRotation(void)
{
time_t now = (time_t)Utility::GetTime();
String method = GetRotationMethod();
tm tmthen;
#ifdef _MSC_VER
tm *temp = localtime(&now);
if (temp == NULL) {
BOOST_THROW_EXCEPTION(posix_error()
<< boost::errinfo_api_function("localtime")
<< boost::errinfo_errno(errno));
}
tmthen = *temp;
#else /* _MSC_VER */
if (localtime_r(&now, &tmthen) == NULL) {
BOOST_THROW_EXCEPTION(posix_error()
<< boost::errinfo_api_function("localtime_r")
<< boost::errinfo_errno(errno));
}
#endif /* _MSC_VER */
tmthen.tm_min = 0;
tmthen.tm_sec = 0;
if (method == "HOURLY") {
tmthen.tm_hour++;
} else if (method == "DAILY") {
tmthen.tm_mday++;
tmthen.tm_hour = 0;
} else if (method == "WEEKLY") {
tmthen.tm_mday += 7 - tmthen.tm_wday;
tmthen.tm_hour = 0;
} else if (method == "MONTHLY") {
tmthen.tm_mon++;
tmthen.tm_mday = 1;
tmthen.tm_hour = 0;
}
time_t ts = mktime(&tmthen);
Log(LogInformation, "compat", "Rescheduling rotation timer for compat log '"
+ GetName() + "' to '" + Utility::FormatDateTime("%Y/%m/%d %H:%M:%S %z", ts) + "'");
m_RotationTimer->Reschedule(ts);
}
/**
* @threadsafety Always.
*/
void CompatLogger::RotationTimerHandler(void)
{
try {
ReopenFile(true);
} catch (...) {
ScheduleNextRotation();
throw;
}
ScheduleNextRotation();
}
void CompatLogger::ValidateRotationMethod(const String& location, const Dictionary::Ptr& attrs)
{
Value rotation_method = attrs->Get("rotation_method");
if (!rotation_method.IsEmpty() && rotation_method != "HOURLY" && rotation_method != "DAILY" &&
rotation_method != "WEEKLY" && rotation_method != "MONTHLY" && rotation_method != "NONE") {
ConfigCompilerContext::GetInstance()->AddMessage(true, "Validation failed for " +
location + ": Rotation method '" + rotation_method + "' is invalid.");
}
}
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