Ensure all perfdata to be written

lib/base/configobject.cpp

@@ -33,6 +33,7 @@
 #include "base/workqueue.hpp"
 #include "base/context.hpp"
 #include "base/application.hpp"
+#include <algorithm>
 #include <fstream>
 #include <boost/exception/errinfo_api_function.hpp>
 #include <boost/exception/errinfo_errno.hpp>
@@ -617,7 +618,13 @@ void ConfigObject::RestoreObjects(const String& filename, int attributeTypes)
 
 void ConfigObject::StopObjects()
 {
-	for (const Type::Ptr& type : Type::GetAllTypes()) {
+	auto types = Type::GetAllTypes();
+
+	std::sort(types.begin(), types.end(), [](const Type::Ptr& a, const Type::Ptr& b) {
+		return a->GetActivationPriority() > b->GetActivationPriority();
+	});
+
+	for (const Type::Ptr& type : types) {
 		auto *dtype = dynamic_cast<ConfigType *>(type.get());
 
 		if (!dtype)

lib/base/defer.hpp

@@ -0,0 +1,59 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2018 Icinga Development Team (https://icinga.com/)      *
+ *                                                                            *
+ * 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 DEFER
+#define DEFER
+
+#include <functional>
+#include <utility>
+
+namespace icinga
+{
+
+/**
+ * An action to be executed at end of scope.
+ *
+ * @ingroup base
+ */
+class Defer
+{
+public:
+	inline
+	Defer(std::function<void()> func) : m_Func(std::move(func))
+	{
+	}
+
+	Defer(const Defer&) = delete;
+	Defer(Defer&&) = delete;
+	Defer& operator=(const Defer&) = delete;
+	Defer& operator=(Defer&&) = delete;
+
+	inline
+	~Defer()
+	{
+		m_Func();
+	}
+
+private:
+	std::function<void()> m_Func;
+};
+
+}
+
+#endif /* DEFER */

lib/checker/checkercomponent.cpp

@@ -23,6 +23,7 @@
 #include "icinga/cib.hpp"
 #include "remote/apilistener.hpp"
 #include "base/configtype.hpp"
+#include "base/defer.hpp"
 #include "base/objectlock.hpp"
 #include "base/utility.hpp"
 #include "base/perfdatavalue.hpp"
@@ -73,6 +74,7 @@ void CheckerComponent::Start(bool runtimeCreated)
 	Log(LogInformation, "CheckerComponent")
 		<< "'" << GetName() << "' started.";
 
+	m_RunningChecks.store(0);
 
 	m_Thread = std::thread(std::bind(&CheckerComponent::CheckThreadProc, this));
 
@@ -84,9 +86,6 @@ void CheckerComponent::Start(bool runtimeCreated)
 
 void CheckerComponent::Stop(bool runtimeRemoved)
 {
-	Log(LogInformation, "CheckerComponent")
-		<< "'" << GetName() << "' stopped.";
-
 	{
 		boost::mutex::scoped_lock lock(m_Mutex);
 		m_Stopped = true;
@@ -96,6 +95,13 @@ void CheckerComponent::Stop(bool runtimeRemoved)
 	m_ResultTimer->Stop();
 	m_Thread.join();
 
+	while (m_RunningChecks.load()) {
+		Utility::Sleep(1.0 / 60.0);
+	}
+
+	Log(LogInformation, "CheckerComponent")
+		<< "'" << GetName() << "' stopped.";
+
 	ObjectImpl<CheckerComponent>::Stop(runtimeRemoved);
 }
 
@@ -207,6 +213,8 @@ void CheckerComponent::CheckThreadProc()
 
 		Checkable::IncreasePendingChecks();
 
+		m_RunningChecks.fetch_add(1);
+
 		Utility::QueueAsyncCallback(std::bind(&CheckerComponent::ExecuteCheckHelper, CheckerComponent::Ptr(this), checkable));
 
 		lock.lock();
@@ -215,6 +223,10 @@ void CheckerComponent::CheckThreadProc()
 
 void CheckerComponent::ExecuteCheckHelper(const Checkable::Ptr& checkable)
 {
+	Defer decrementRunningChecks ([this]{
+		m_RunningChecks.fetch_sub(1);
+	});
+
 	try {
 		checkable->ExecuteCheck();
 	} catch (const std::exception& ex) {

lib/checker/checkercomponent.hpp

@@ -25,11 +25,13 @@
 #include "base/configobject.hpp"
 #include "base/timer.hpp"
 #include "base/utility.hpp"
+#include <atomic>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/condition_variable.hpp>
 #include <boost/multi_index_container.hpp>
 #include <boost/multi_index/ordered_index.hpp>
 #include <boost/multi_index/key_extractors.hpp>
+#include <cstdint>
 #include <thread>
 
 namespace icinga
@@ -90,6 +92,7 @@ class CheckerComponent final : public ObjectImpl<CheckerComponent>
 	boost::condition_variable m_CV;
 	bool m_Stopped{false};
 	std::thread m_Thread;
+	std::atomic<uintmax_t> m_RunningChecks;
 
 	CheckableSet m_IdleCheckables;
 	CheckableSet m_PendingCheckables;

lib/perfdata/elasticsearchwriter.ti

@@ -7,7 +7,7 @@ namespace icinga
 
 class ElasticsearchWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config, required] String host {
 		default {{{ return "127.0.0.1"; }}}

lib/perfdata/gelfwriter.ti

@@ -26,7 +26,7 @@ namespace icinga
 
 class GelfWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config] String host {
 		default {{{ return "127.0.0.1"; }}}

lib/perfdata/graphitewriter.ti

@@ -26,7 +26,7 @@ namespace icinga
 
 class GraphiteWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config] String host {
 		default {{{ return "127.0.0.1"; }}}

lib/perfdata/influxdbwriter.ti

@@ -26,7 +26,7 @@ namespace icinga
 
 class InfluxdbWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config, required] String host {
 		default {{{ return "127.0.0.1"; }}}

lib/perfdata/opentsdbwriter.ti

@@ -26,7 +26,7 @@ namespace icinga
 
 class OpenTsdbWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config] String host {
 		default {{{ return "127.0.0.1"; }}}

lib/perfdata/perfdatawriter.ti

@@ -27,7 +27,7 @@ namespace icinga
 
 class PerfdataWriter : ConfigObject
 {
-	activation_priority 100;
+	activation_priority 80;
 
 	[config] String host_perfdata_path {
 		default {{{ return Configuration::SpoolDir + "/perfdata/host-perfdata"; }}}