icinga2/lib/icinga/service-notification.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/service.h"
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#include "icinga/notificationrequestmessage.h"
#include "icinga/notificationmessage.h"
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#include "remoting/endpointmanager.h"
#include "base/dynamictype.h"
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#include "base/objectlock.h"
#include "base/logger_fwd.h"
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#include "config/configitembuilder.h"
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#include <boost/tuple/tuple.hpp>
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#include <boost/smart_ptr/make_shared.hpp>
#include <boost/foreach.hpp>
#include <boost/exception/diagnostic_information.hpp>
using namespace icinga;
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static boost::mutex l_NotificationMutex;
static std::map<String, std::set<Notification::WeakPtr> > l_NotificationsCache;
static bool l_NotificationsCacheNeedsUpdate = false;
static Timer::Ptr l_NotificationsCacheTimer;
boost::signals2::signal<void (const Service::Ptr&, const String&, const NotificationType&, const Dictionary::Ptr&, const String&, const String&)> Service::OnNotificationSentChanged;
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void Service::ResetNotificationNumbers(void)
{
BOOST_FOREACH(const Notification::Ptr& notification, GetNotifications()) {
ObjectLock olock(notification);
notification->ResetNotificationNumber();
}
}
void Service::NotificationSentRequestHandler(const RequestMessage& request)
{
NotificationMessage params;
if (!request.GetParams(&params))
return;
String svcname = params.GetService();
Service::Ptr service = Service::GetByName(svcname);
String username = params.GetUser();
String author = params.GetAuthor();
String comment_text = params.GetCommentText();
NotificationType notification_type = params.GetType();
Dictionary::Ptr cr = params.GetCheckResult();
OnNotificationSentChanged(service, username, notification_type, cr, author, comment_text);
}
void Service::RequestNotifications(NotificationType type, const Dictionary::Ptr& cr, const String& author, const String& text)
{
RequestMessage msg;
msg.SetMethod("icinga::SendNotifications");
NotificationRequestMessage params;
msg.SetParams(params);
params.SetService(GetName());
params.SetType(type);
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params.SetCheckResult(cr);
params.SetAuthor(author);
params.SetText(text);
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Log(LogDebug, "icinga", "Sending notification anycast request for service '" + GetName() + "'");
EndpointManager::GetInstance()->SendAnycastMessage(Endpoint::Ptr(), msg);
}
void Service::SendNotifications(NotificationType type, const Dictionary::Ptr& cr, const String& author, const String& text)
{
bool force = false;
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if (!GetEnableNotifications()) {
if (!GetForceNextNotification()) {
Log(LogInformation, "icinga", "Notifications are disabled for service '" + GetName() + "'.");
return;
}
force = true;
SetForceNextNotification(false);
}
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Log(LogInformation, "icinga", "Sending notifications for service '" + GetName() + "'");
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std::set<Notification::Ptr> notifications = GetNotifications();
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if (notifications.empty())
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Log(LogInformation, "icinga", "Service '" + GetName() + "' does not have any notifications.");
BOOST_FOREACH(const Notification::Ptr& notification, notifications) {
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try {
notification->BeginExecuteNotification(type, cr, force, author, text);
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} catch (const std::exception& ex) {
std::ostringstream msgbuf;
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msgbuf << "Exception occured during notification for service '"
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<< GetName() << "': " << boost::diagnostic_information(ex);
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String message = msgbuf.str();
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Log(LogWarning, "icinga", message);
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}
}
}
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void Service::InvalidateNotificationsCache(void)
{
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boost::mutex::scoped_lock lock(l_NotificationMutex);
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if (l_NotificationsCacheNeedsUpdate)
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return; /* Someone else has already requested a refresh. */
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if (!l_NotificationsCacheTimer) {
l_NotificationsCacheTimer = boost::make_shared<Timer>();
l_NotificationsCacheTimer->SetInterval(0.5);
l_NotificationsCacheTimer->OnTimerExpired.connect(boost::bind(&Service::RefreshNotificationsCache));
l_NotificationsCacheTimer->Start();
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}
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l_NotificationsCacheNeedsUpdate = true;
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}
void Service::RefreshNotificationsCache(void)
{
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{
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boost::mutex::scoped_lock lock(l_NotificationMutex);
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if (!l_NotificationsCacheNeedsUpdate)
return;
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l_NotificationsCacheNeedsUpdate = false;
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}
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Log(LogDebug, "icinga", "Updating Service notifications cache.");
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std::map<String, std::set<Notification::WeakPtr> > newNotificationsCache;
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BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Notification")) {
const Notification::Ptr& notification = static_pointer_cast<Notification>(object);
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Service::Ptr service = notification->GetService();
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if (!service)
continue;
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newNotificationsCache[service->GetName()].insert(notification);
}
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boost::mutex::scoped_lock lock(l_NotificationMutex);
l_NotificationsCache.swap(newNotificationsCache);
}
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std::set<Notification::Ptr> Service::GetNotifications(void) const
{
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std::set<Notification::Ptr> notifications;
{
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boost::mutex::scoped_lock lock(l_NotificationMutex);
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BOOST_FOREACH(const Notification::WeakPtr& wservice, l_NotificationsCache[GetName()]) {
Notification::Ptr notification = wservice.lock();
if (!notification)
continue;
notifications.insert(notification);
}
}
return notifications;
}
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void Service::UpdateSlaveNotifications(void)
{
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Dictionary::Ptr oldNotifications;
ConfigItem::Ptr serviceItem, hostItem;
serviceItem = ConfigItem::GetObject("Service", GetName());
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/* Don't create slave notifications unless we own this object */
if (!serviceItem)
return;
Host::Ptr host = GetHost();
if (!host)
return;
hostItem = ConfigItem::GetObject("Host", host->GetName());
/* Don't create slave notifications unless we own the host */
if (!hostItem)
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return;
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{
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ObjectLock olock(this);
oldNotifications = m_SlaveNotifications;
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}
std::vector<Dictionary::Ptr> descLists;
descLists.push_back(Get("notifications"));
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Dictionary::Ptr newNotifications;
newNotifications = boost::make_shared<Dictionary>();
descLists.push_back(host->Get("notifications"));
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for (int i = 0; i < 2; i++) {
Dictionary::Ptr descs;
ConfigItem::Ptr item;
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if (i == 0) {
/* Host notification descs */
descs = host->Get("notifications");
item = hostItem;
} else {
/* Service notification descs */
descs = Get("notifications");
item = serviceItem;
}
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if (!descs)
continue;
ObjectLock olock(descs);
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String nfcname;
Value nfcdesc;
BOOST_FOREACH(boost::tie(nfcname, nfcdesc), descs) {
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std::ostringstream namebuf;
namebuf << GetName() << ":" << nfcname;
String name = namebuf.str();
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ConfigItemBuilder::Ptr builder = boost::make_shared<ConfigItemBuilder>(item->GetDebugInfo());
builder->SetType("Notification");
builder->SetName(name);
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builder->AddExpression("host_name", OperatorSet, host->GetName());
builder->AddExpression("service", OperatorSet, GetShortName());
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if (!nfcdesc.IsObjectType<Dictionary>())
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BOOST_THROW_EXCEPTION(std::invalid_argument("Notification description must be a dictionary."));
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Dictionary::Ptr notification = nfcdesc;
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Array::Ptr templates = notification->Get("templates");
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if (templates) {
ObjectLock tlock(templates);
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BOOST_FOREACH(const Value& tmpl, templates) {
builder->AddParent(tmpl);
}
}
/* Clone attributes from the host/service object. */
std::set<String, string_iless> keys;
keys.insert("users");
keys.insert("groups");
keys.insert("notification_interval");
keys.insert("notification_period");
keys.insert("notification_type_filter");
keys.insert("notification_state_filter");
keys.insert("export_macros");
ExpressionList::Ptr svc_exprl = boost::make_shared<ExpressionList>();
item->GetLinkedExpressionList()->ExtractFiltered(keys, svc_exprl);
builder->AddExpressionList(svc_exprl);
/* Clone attributes from the notification expression list. */
std::vector<String> path;
path.push_back("notifications");
path.push_back(nfcname);
ExpressionList::Ptr nfc_exprl = boost::make_shared<ExpressionList>();
item->GetLinkedExpressionList()->ExtractPath(path, nfc_exprl);
builder->AddExpressionList(nfc_exprl);
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ConfigItem::Ptr notificationItem = builder->Compile();
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notificationItem->Commit();
newNotifications->Set(name, notificationItem);
}
}
if (oldNotifications) {
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ObjectLock olock(oldNotifications);
ConfigItem::Ptr notification;
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BOOST_FOREACH(boost::tie(boost::tuples::ignore, notification), oldNotifications) {
if (!notification)
continue;
if (!newNotifications->Contains(notification->GetName()))
notification->Unregister();
}
}
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{
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ObjectLock olock(this);
m_SlaveNotifications = newNotifications;
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}
}
bool Service::GetEnableNotifications(void) const
{
if (m_EnableNotifications.IsEmpty())
return true;
else
return m_EnableNotifications;
}
void Service::SetEnableNotifications(bool enabled)
{
m_EnableNotifications = enabled;
Touch("enable_notifications");
}
bool Service::GetForceNextNotification(void) const
{
if (m_ForceNextNotification.IsEmpty())
return false;
return static_cast<bool>(m_ForceNextNotification);
}
void Service::SetForceNextNotification(bool forced)
{
m_ForceNextNotification = forced ? 1 : 0;
Touch("force_next_notification");
}