granicus.if.org Git - icinga2/blob - lib/icinga/service-notification.cpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/)        *
   4  *                                                                            *
   5  * This program is free software; you can redistribute it and/or              *
   6  * modify it under the terms of the GNU General Public License                *
   7  * as published by the Free Software Foundation; either version 2             *
   8  * of the License, or (at your option) any later version.                     *
   9  *                                                                            *
  10  * This program is distributed in the hope that it will be useful,            *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
  14  *                                                                            *
  15  * You should have received a copy of the GNU General Public License          *
  16  * along with this program; if not, write to the Free Software Foundation     *
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
  18  ******************************************************************************/
  19
  20 #include "icinga/service.h"
  21 #include "icinga/notificationrequestmessage.h"
  22 #include "remoting/endpointmanager.h"
  23 #include "base/dynamictype.h"
  24 #include "base/objectlock.h"
  25 #include "base/logger_fwd.h"
  26 #include "config/configitembuilder.h"
  27 #include <boost/tuple/tuple.hpp>
  28 #include <boost/smart_ptr/make_shared.hpp>
  29 #include <boost/foreach.hpp>
  30 #include <boost/exception/diagnostic_information.hpp>
  31
  32 using namespace icinga;
  33
  34 static boost::mutex l_NotificationMutex;
  35 static std::map<String, std::set<Notification::WeakPtr> > l_NotificationsCache;
  36 static bool l_NotificationsCacheNeedsUpdate = false;
  37 static Timer::Ptr l_NotificationsCacheTimer;
  38
  39 void Service::RequestNotifications(NotificationType type, const Dictionary::Ptr& cr, const String& author, const String& text)
  40 {
  41         RequestMessage msg;
  42         msg.SetMethod("icinga::SendNotifications");
  43
  44         NotificationRequestMessage params;
  45         msg.SetParams(params);
  46
  47         params.SetService(GetName());
  48         params.SetType(type);
  49         params.SetCheckResult(cr);
  50         params.SetAuthor(author);
  51         params.SetText(text);
  52
  53         Log(LogDebug, "icinga", "Sending notification anycast request for service '" + GetName() + "'");
  54         EndpointManager::GetInstance()->SendAnycastMessage(Endpoint::Ptr(), msg);
  55 }
  56
  57 void Service::SendNotifications(NotificationType type, const Dictionary::Ptr& cr, const String& author, const String& text)
  58 {
  59         bool force = false;
  60
  61         if (!GetEnableNotifications()) {
  62                 if (!GetForceNextNotification()) {
  63                         Log(LogInformation, "icinga", "Notifications are disabled for service '" + GetName() + "'.");
  64                         return;
  65                 }
  66
  67                 force = true;
  68                 SetForceNextNotification(false);
  69         }
  70
  71         Log(LogInformation, "icinga", "Sending notifications for service '" + GetName() + "'");
  72
  73         std::set<Notification::Ptr> notifications = GetNotifications();
  74
  75         if (notifications.empty())
  76                 Log(LogInformation, "icinga", "Service '" + GetName() + "' does not have any notifications.");
  77
  78         BOOST_FOREACH(const Notification::Ptr& notification, notifications) {
  79                 try {
  80                         notification->BeginExecuteNotification(type, cr, force, author, text);
  81                 } catch (const std::exception& ex) {
  82                         std::ostringstream msgbuf;
  83                         msgbuf << "Exception occured during notification for service '"
  84                                << GetName() << "': " << boost::diagnostic_information(ex);
  85                         String message = msgbuf.str();
  86
  87                         Log(LogWarning, "icinga", message);
  88                 }
  89         }
  90 }
  91
  92 void Service::InvalidateNotificationsCache(void)
  93 {
  94         boost::mutex::scoped_lock lock(l_NotificationMutex);
  95
  96         if (l_NotificationsCacheNeedsUpdate)
  97                 return; /* Someone else has already requested a refresh. */
  98
  99         if (!l_NotificationsCacheTimer) {
 100                 l_NotificationsCacheTimer = boost::make_shared<Timer>();
 101                 l_NotificationsCacheTimer->SetInterval(0.5);
 102                 l_NotificationsCacheTimer->OnTimerExpired.connect(boost::bind(&Service::RefreshNotificationsCache));
 103                 l_NotificationsCacheTimer->Start();
 104         }
 105
 106         l_NotificationsCacheNeedsUpdate = true;
 107 }
 108
 109 void Service::RefreshNotificationsCache(void)
 110 {
 111         {
 112                 boost::mutex::scoped_lock lock(l_NotificationMutex);
 113
 114                 if (!l_NotificationsCacheNeedsUpdate)
 115                         return;
 116
 117                 l_NotificationsCacheNeedsUpdate = false;
 118         }
 119
 120         Log(LogDebug, "icinga", "Updating Service notifications cache.");
 121
 122         std::map<String, std::set<Notification::WeakPtr> > newNotificationsCache;
 123
 124         BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Notification")) {
 125                 const Notification::Ptr& notification = static_pointer_cast<Notification>(object);
 126
 127                 Service::Ptr service = notification->GetService();
 128
 129                 if (!service)
 130                         continue;
 131
 132                 newNotificationsCache[service->GetName()].insert(notification);
 133         }
 134
 135         boost::mutex::scoped_lock lock(l_NotificationMutex);
 136         l_NotificationsCache.swap(newNotificationsCache);
 137 }
 138
 139 std::set<Notification::Ptr> Service::GetNotifications(void) const
 140 {
 141         std::set<Notification::Ptr> notifications;
 142
 143         {
 144                 boost::mutex::scoped_lock lock(l_NotificationMutex);
 145
 146                 BOOST_FOREACH(const Notification::WeakPtr& wservice, l_NotificationsCache[GetName()]) {
 147                         Notification::Ptr notification = wservice.lock();
 148
 149                         if (!notification)
 150                                 continue;
 151
 152                         notifications.insert(notification);
 153                 }
 154         }
 155
 156         return notifications;
 157 }
 158
 159 void Service::UpdateSlaveNotifications(void)
 160 {
 161         Dictionary::Ptr oldNotifications;
 162         ConfigItem::Ptr serviceItem, hostItem;
 163
 164         serviceItem = ConfigItem::GetObject("Service", GetName());
 165
 166         /* Don't create slave notifications unless we own this object */
 167         if (!serviceItem)
 168                 return;
 169
 170         Host::Ptr host = GetHost();
 171
 172         if (!host)
 173                 return;
 174
 175         hostItem = ConfigItem::GetObject("Host", host->GetName());
 176
 177         /* Don't create slave notifications unless we own the host */
 178         if (!hostItem)
 179                 return;
 180
 181         {
 182                 ObjectLock olock(this);
 183                 oldNotifications = m_SlaveNotifications;
 184         }
 185
 186         std::vector<Dictionary::Ptr> descLists;
 187
 188         descLists.push_back(Get("notifications"));
 189
 190         Dictionary::Ptr newNotifications;
 191         newNotifications = boost::make_shared<Dictionary>();
 192
 193         descLists.push_back(host->Get("notifications"));
 194
 195         for (int i = 0; i < 2; i++) {
 196                 Dictionary::Ptr descs;
 197                 ConfigItem::Ptr item;
 198
 199                 if (i == 0) {
 200                         /* Host notification descs */
 201                         descs = host->Get("notifications");
 202                         item = hostItem;
 203                 } else {
 204                         /* Service notification descs */
 205                         descs = Get("notifications");
 206                         item = serviceItem;
 207                 }
 208
 209                 if (!descs)
 210                         continue;
 211
 212                 ObjectLock olock(descs);
 213
 214                 String nfcname;
 215                 Value nfcdesc;
 216                 BOOST_FOREACH(boost::tie(nfcname, nfcdesc), descs) {
 217                         std::ostringstream namebuf;
 218                         namebuf << GetName() << ":" << nfcname;
 219                         String name = namebuf.str();
 220
 221                         ConfigItemBuilder::Ptr builder = boost::make_shared<ConfigItemBuilder>(item->GetDebugInfo());
 222                         builder->SetType("Notification");
 223                         builder->SetName(name);
 224                         builder->AddExpression("host_name", OperatorSet, host->GetName());
 225                         builder->AddExpression("service", OperatorSet, GetShortName());
 226
 227                         if (!nfcdesc.IsObjectType<Dictionary>())
 228                                 BOOST_THROW_EXCEPTION(std::invalid_argument("Notification description must be a dictionary."));
 229
 230                         Dictionary::Ptr notification = nfcdesc;
 231
 232                         Array::Ptr templates = notification->Get("templates");
 233
 234                         if (templates) {
 235                                 ObjectLock tlock(templates);
 236
 237                                 BOOST_FOREACH(const Value& tmpl, templates) {
 238                                         builder->AddParent(tmpl);
 239                                 }
 240                         }
 241
 242                         /* Clone attributes from the host/service object. */
 243                         std::set<String, string_iless> keys;
 244                         keys.insert("users");
 245                         keys.insert("groups");
 246                         keys.insert("notification_interval");
 247                         keys.insert("notification_period");
 248                         keys.insert("notification_type_filter");
 249                         keys.insert("notification_state_filter");
 250                         keys.insert("export_macros");
 251
 252                         ExpressionList::Ptr svc_exprl = boost::make_shared<ExpressionList>();
 253                         item->GetLinkedExpressionList()->ExtractFiltered(keys, svc_exprl);
 254                         builder->AddExpressionList(svc_exprl);
 255
 256                         /* Clone attributes from the notification expression list. */
 257                         std::vector<String> path;
 258                         path.push_back("notifications");
 259                         path.push_back(nfcname);
 260
 261                         ExpressionList::Ptr nfc_exprl = boost::make_shared<ExpressionList>();
 262                         item->GetLinkedExpressionList()->ExtractPath(path, nfc_exprl);
 263                         builder->AddExpressionList(nfc_exprl);
 264
 265                         ConfigItem::Ptr notificationItem = builder->Compile();
 266                         notificationItem->Commit();
 267
 268                         newNotifications->Set(name, notificationItem);
 269                 }
 270         }
 271
 272         if (oldNotifications) {
 273                 ObjectLock olock(oldNotifications);
 274
 275                 ConfigItem::Ptr notification;
 276                 BOOST_FOREACH(boost::tie(boost::tuples::ignore, notification), oldNotifications) {
 277                         if (!notification)
 278                                 continue;
 279
 280                         if (!newNotifications->Contains(notification->GetName()))
 281                                 notification->Unregister();
 282                 }
 283         }
 284
 285         {
 286                 ObjectLock olock(this);
 287                 m_SlaveNotifications = newNotifications;
 288         }
 289 }
 290
 291 bool Service::GetEnableNotifications(void) const
 292 {
 293         if (m_EnableNotifications.IsEmpty())
 294                 return true;
 295         else
 296                 return m_EnableNotifications;
 297 }
 298
 299 void Service::SetEnableNotifications(bool enabled)
 300 {
 301         m_EnableNotifications = enabled;
 302         Touch("enable_notifications");
 303 }
 304
 305 bool Service::GetForceNextNotification(void) const
 306 {
 307         if (m_ForceNextNotification.IsEmpty())
 308                 return false;
 309
 310         return static_cast<bool>(m_ForceNextNotification);
 311 }
 312
 313 void Service::SetForceNextNotification(bool forced)
 314 {
 315         m_ForceNextNotification = forced ? 1 : 0;
 316         Touch("force_next_notification");
 317 }