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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2013 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/host.h"
  21 #include "icinga/service.h"
  22 #include "icinga/hostgroup.h"
  23 #include "icinga/icingaapplication.h"
  24 #include "icinga/pluginutility.h"
  25 #include "base/dynamictype.h"
  26 #include "base/objectlock.h"
  27 #include "base/logger_fwd.h"
  28 #include "base/timer.h"
  29 #include "base/convert.h"
  30 #include "base/utility.h"
  31 #include "base/scriptfunction.h"
  32 #include "base/debug.h"
  33 #include "base/serializer.h"
  34 #include "config/configitembuilder.h"
  35 #include "config/configcompilercontext.h"
  36 #include <boost/foreach.hpp>
  37
  38 using namespace icinga;
  39
  40 REGISTER_TYPE(Host);
  41
  42 void Host::Start(void)
  43 {
  44         DynamicObject::Start();
  45
  46         ASSERT(!OwnsLock());
  47
  48         Array::Ptr groups = GetGroups();
  49
  50         if (groups) {
  51                 ObjectLock olock(groups);
  52
  53                 BOOST_FOREACH(const String& name, groups) {
  54                         HostGroup::Ptr hg = HostGroup::GetByName(name);
  55
  56                         if (hg)
  57                                 hg->AddMember(GetSelf());
  58                 }
  59         }
  60 }
  61
  62 void Host::OnConfigLoaded(void)
  63 {
  64         UpdateSlaveServices();
  65 }
  66
  67 void Host::Stop(void)
  68 {
  69         DynamicObject::Stop();
  70
  71         Array::Ptr groups = GetGroups();
  72
  73         if (groups) {
  74                 ObjectLock olock(groups);
  75
  76                 BOOST_FOREACH(const String& name, groups) {
  77                         HostGroup::Ptr hg = HostGroup::GetByName(name);
  78
  79                         if (hg)
  80                                 hg->RemoveMember(GetSelf());
  81                 }
  82         }
  83
  84         // TODO: unregister slave services/notifications?
  85 }
  86
  87 bool Host::IsReachable(void) const
  88 {
  89         ASSERT(!OwnsLock());
  90
  91         std::set<Service::Ptr> parentServices = GetParentServices();
  92
  93         BOOST_FOREACH(const Service::Ptr& service, parentServices) {
  94                 ObjectLock olock(service);
  95
  96                 /* ignore pending services */
  97                 if (!service->GetLastCheckResult())
  98                         continue;
  99
 100                 /* ignore soft states */
 101                 if (service->GetStateType() == StateTypeSoft)
 102                         continue;
 103
 104                 /* ignore services states OK and Warning */
 105                 if (service->GetState() == StateOK ||
 106                     service->GetState() == StateWarning)
 107                         continue;
 108
 109                 return false;
 110         }
 111
 112         std::set<Host::Ptr> parentHosts = GetParentHosts();
 113
 114         BOOST_FOREACH(const Host::Ptr& host, parentHosts) {
 115                 Service::Ptr hc = host->GetCheckService();
 116
 117                 /* ignore hosts that don't have a check */
 118                 if (!hc)
 119                         continue;
 120
 121                 ObjectLock olock(hc);
 122
 123                 /* ignore soft states */
 124                 if (hc->GetStateType() == StateTypeSoft)
 125                         continue;
 126
 127                 /* ignore hosts that are up */
 128                 if (hc->GetState() == StateOK)
 129                         continue;
 130
 131                 return false;
 132         }
 133
 134         return true;
 135 }
 136
 137 void Host::UpdateSlaveServices(void)
 138 {
 139         ASSERT(!OwnsLock());
 140
 141         Dictionary::Ptr service_descriptions = GetServiceDescriptions();
 142
 143         if (!service_descriptions ||service_descriptions->GetLength() == 0)
 144                 return;
 145
 146         ConfigItem::Ptr item = ConfigItem::GetObject("Host", GetName());
 147
 148         ObjectLock olock(service_descriptions);
 149         BOOST_FOREACH(const Dictionary::Pair& kv, service_descriptions) {
 150                 std::ostringstream namebuf;
 151                 namebuf << GetName() << "!" << kv.first;
 152                 String name = namebuf.str();
 153
 154                 std::vector<String> path;
 155                 path.push_back("services");
 156                 path.push_back(kv.first);
 157
 158                 DebugInfo di;
 159                 item->GetLinkedExpressionList()->FindDebugInfoPath(path, di);
 160
 161                 if (di.Path.IsEmpty())
 162                         di = item->GetDebugInfo();
 163
 164                 ConfigItemBuilder::Ptr builder = make_shared<ConfigItemBuilder>(di);
 165                 builder->SetType("Service");
 166                 builder->SetName(name);
 167                 builder->AddExpression("host", OperatorSet, GetName());
 168                 builder->AddExpression("display_name", OperatorSet, kv.first);
 169                 builder->AddExpression("short_name", OperatorSet, kv.first);
 170
 171                 if (!kv.second.IsObjectType<Dictionary>())
 172                         BOOST_THROW_EXCEPTION(std::invalid_argument("Service description must be either a string or a dictionary."));
 173
 174                 Dictionary::Ptr service = kv.second;
 175
 176                 Array::Ptr templates = service->Get("templates");
 177
 178                 if (templates) {
 179                         ObjectLock olock(templates);
 180
 181                         BOOST_FOREACH(const Value& tmpl, templates) {
 182                                 builder->AddParent(tmpl);
 183                         }
 184                 }
 185
 186                 /* Clone attributes from the service expression list. */
 187                 ExpressionList::Ptr svc_exprl = make_shared<ExpressionList>();
 188                 item->GetLinkedExpressionList()->ExtractPath(path, svc_exprl);
 189
 190                 builder->AddExpressionList(svc_exprl);
 191
 192                 ConfigItem::Ptr serviceItem = builder->Compile();
 193                 serviceItem->Register();
 194                 DynamicObject::Ptr dobj = serviceItem->Commit();
 195                 dobj->OnConfigLoaded();
 196         }
 197 }
 198
 199 std::set<Service::Ptr> Host::GetServices(void) const
 200 {
 201         boost::mutex::scoped_lock lock(m_ServicesMutex);
 202
 203         std::set<Service::Ptr> services;
 204         typedef std::pair<String, Service::Ptr> ServicePair;
 205         BOOST_FOREACH(const ServicePair& kv, m_Services) {
 206                 services.insert(kv.second);
 207         }
 208
 209         return services;
 210 }
 211
 212 void Host::AddService(const Service::Ptr& service)
 213 {
 214         boost::mutex::scoped_lock lock(m_ServicesMutex);
 215
 216         m_Services[service->GetShortName()] = service;
 217 }
 218
 219 void Host::RemoveService(const Service::Ptr& service)
 220 {
 221         boost::mutex::scoped_lock lock(m_ServicesMutex);
 222
 223         m_Services.erase(service->GetShortName());
 224 }
 225
 226 int Host::GetTotalServices(void) const
 227 {
 228         return GetServices().size();
 229 }
 230
 231 Service::Ptr Host::GetServiceByShortName(const Value& name) const
 232 {
 233         if (name.IsScalar()) {
 234                 {
 235                         boost::mutex::scoped_lock lock(m_ServicesMutex);
 236
 237                         std::map<String, Service::Ptr>::const_iterator it = m_Services.find(name);
 238
 239                         if (it != m_Services.end())
 240                                 return it->second;
 241                 }
 242
 243                 return Service::Ptr();
 244         } else if (name.IsObjectType<Dictionary>()) {
 245                 Dictionary::Ptr dict = name;
 246                 String short_name;
 247
 248                 return Service::GetByNamePair(dict->Get("host"), dict->Get("service"));
 249         } else {
 250                 BOOST_THROW_EXCEPTION(std::invalid_argument("Host/Service name pair is invalid: " + JsonSerialize(name)));
 251         }
 252 }
 253
 254 std::set<Host::Ptr> Host::GetParentHosts(void) const
 255 {
 256         std::set<Host::Ptr> parents;
 257
 258         Array::Ptr dependencies = GetHostDependencies();
 259
 260         if (dependencies) {
 261                 ObjectLock olock(dependencies);
 262
 263                 BOOST_FOREACH(const Value& value, dependencies) {
 264                         if (value == GetName())
 265                                 continue;
 266
 267                         Host::Ptr host = GetByName(value);
 268
 269                         parents.insert(host);
 270                 }
 271         }
 272
 273         return parents;
 274 }
 275
 276 std::set<Host::Ptr> Host::GetChildHosts(void) const
 277 {
 278         std::set<Host::Ptr> children;
 279
 280         BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjects<Host>()) {
 281                 Array::Ptr dependencies = host->GetHostDependencies();
 282
 283                 if (dependencies) {
 284                         ObjectLock olock(dependencies);
 285
 286                         BOOST_FOREACH(const Value& value, dependencies) {
 287                                 if (value == GetName())
 288                                         children.insert(host);
 289                         }
 290                 }
 291         }
 292
 293         return children;
 294 }
 295
 296 Service::Ptr Host::GetCheckService(void) const
 297 {
 298         String host_check = GetCheck();
 299
 300         if (host_check.IsEmpty())
 301                 return Service::Ptr();
 302
 303         return GetServiceByShortName(host_check);
 304 }
 305
 306 std::set<Service::Ptr> Host::GetParentServices(void) const
 307 {
 308         std::set<Service::Ptr> parents;
 309
 310         Array::Ptr dependencies = GetServiceDependencies();
 311
 312         if (dependencies) {
 313                 ObjectLock olock(dependencies);
 314
 315                 BOOST_FOREACH(const Value& value, dependencies) {
 316                         parents.insert(GetServiceByShortName(value));
 317                 }
 318         }
 319
 320         return parents;
 321 }
 322
 323 HostState Host::CalculateState(ServiceState state, bool reachable)
 324 {
 325         if (!reachable)
 326                 return HostUnreachable;
 327
 328         switch (state) {
 329                 case StateOK:
 330                 case StateWarning:
 331                         return HostUp;
 332                 default:
 333                         return HostDown;
 334         }
 335 }
 336
 337 HostState Host::GetState(void) const
 338 {
 339         ASSERT(!OwnsLock());
 340
 341         if (!IsReachable())
 342                 return HostUnreachable;
 343
 344         Service::Ptr hc = GetCheckService();
 345
 346         if (!hc)
 347                 return HostUp;
 348
 349         switch (hc->GetState()) {
 350                 case StateOK:
 351                 case StateWarning:
 352                         return HostUp;
 353                 default:
 354                         return HostDown;
 355         }
 356
 357 }
 358
 359 HostState Host::GetLastState(void) const
 360 {
 361         ASSERT(!OwnsLock());
 362
 363         if (!IsReachable())
 364                 return HostUnreachable;
 365
 366         Service::Ptr hc = GetCheckService();
 367
 368         if (!hc)
 369                 return HostUp;
 370
 371         switch (hc->GetLastState()) {
 372                 case StateOK:
 373                 case StateWarning:
 374                         return HostUp;
 375                 default:
 376                         return HostDown;
 377         }
 378 }
 379
 380 HostState Host::GetLastHardState(void) const
 381 {
 382         ASSERT(!OwnsLock());
 383
 384         if (!IsReachable())
 385                 return HostUnreachable;
 386
 387         Service::Ptr hc = GetCheckService();
 388
 389         if (!hc)
 390                 return HostUp;
 391
 392         switch (hc->GetLastHardState()) {
 393                 case StateOK:
 394                 case StateWarning:
 395                         return HostUp;
 396                 default:
 397                         return HostDown;
 398         }
 399 }
 400
 401 double Host::GetLastStateUp(void) const
 402 {
 403         ASSERT(!OwnsLock());
 404
 405         Service::Ptr hc = GetCheckService();
 406
 407         if (!hc)
 408                 return 0;
 409
 410         if (hc->GetLastStateOK() > hc->GetLastStateWarning())
 411                 return hc->GetLastStateOK();
 412         else
 413                 return hc->GetLastStateWarning();
 414 }
 415
 416 double Host::GetLastStateDown(void) const
 417 {
 418         ASSERT(!OwnsLock());
 419
 420         Service::Ptr hc = GetCheckService();
 421
 422         if (!hc)
 423                 return 0;
 424
 425         return hc->GetLastStateCritical();
 426 }
 427
 428 double Host::GetLastStateUnreachable(void) const
 429 {
 430         ASSERT(!OwnsLock());
 431
 432         Service::Ptr hc = GetCheckService();
 433
 434         if (!hc)
 435                 return 0;
 436
 437         return hc->GetLastStateUnreachable();
 438 }
 439
 440 double Host::GetLastStateChange(void) const
 441 {
 442         Service::Ptr hc = GetCheckService();
 443
 444         if (!hc)
 445                 return Application::GetStartTime();
 446
 447         return hc->GetLastStateChange();
 448 }
 449
 450
 451 double Host::GetLastHardStateChange(void) const
 452 {
 453         Service::Ptr hc = GetCheckService();
 454
 455         if (!hc)
 456                 return Application::GetStartTime();
 457
 458         return hc->GetLastHardStateChange();
 459 }
 460
 461 StateType Host::GetLastStateType(void) const
 462 {
 463         Service::Ptr hc = GetCheckService();
 464
 465         if (!hc)
 466                 return StateTypeHard;
 467
 468         return hc->GetLastStateType();
 469 }
 470
 471 StateType Host::GetStateType(void) const
 472 {
 473         Service::Ptr hc = GetCheckService();
 474
 475         if (!hc)
 476                 return StateTypeHard;
 477
 478         return hc->GetStateType();
 479 }
 480
 481 HostState Host::StateFromString(const String& state)
 482 {
 483         if (state == "UP")
 484                 return HostUp;
 485         else if (state == "DOWN")
 486                 return HostDown;
 487         else if (state == "UNREACHABLE")
 488                 return HostUnreachable;
 489         else
 490                 return HostUnreachable;
 491 }
 492
 493 String Host::StateToString(HostState state)
 494 {
 495         switch (state) {
 496                 case HostUp:
 497                         return "UP";
 498                 case HostDown:
 499                         return "DOWN";
 500                 case HostUnreachable:
 501                         return "UNREACHABLE";
 502                 default:
 503                         return "INVALID";
 504         }
 505 }
 506
 507 StateType Host::StateTypeFromString(const String& type)
 508 {
 509         if (type == "SOFT")
 510                 return StateTypeSoft;
 511         else
 512                 return StateTypeHard;
 513 }
 514
 515 String Host::StateTypeToString(StateType type)
 516 {
 517         if (type == StateTypeSoft)
 518                 return "SOFT";
 519         else
 520                 return "HARD";
 521 }
 522
 523 bool Host::ResolveMacro(const String& macro, const CheckResult::Ptr&, String *result) const
 524 {
 525         if (macro == "HOSTNAME") {
 526                 *result = GetName();
 527                 return true;
 528         }
 529         else if (macro == "HOSTDISPLAYNAME" || macro == "HOSTALIAS") {
 530                 *result = GetDisplayName();
 531                 return true;
 532         }
 533
 534         Service::Ptr hc = GetCheckService();
 535         CheckResult::Ptr hccr;
 536
 537         if (hc) {
 538                 ServiceState state = hc->GetState();
 539                 bool reachable = IsReachable();
 540
 541                 if (macro == "HOSTSTATE") {
 542                         HostState hstate = CalculateState(state, reachable);
 543
 544                         switch (hstate) {
 545                                 case HostUnreachable:
 546                                         *result = "UNREACHABLE";
 547                                         break;
 548                                 case HostUp:
 549                                         *result = "UP";
 550                                         break;
 551                                 case HostDown:
 552                                         *result = "DOWN";
 553                                         break;
 554                                 default:
 555                                         ASSERT(0);
 556                         }
 557
 558                         return true;
 559                 } else if (macro == "HOSTSTATEID") {
 560                         *result = Convert::ToString(state);
 561                         return true;
 562                 } else if (macro == "HOSTSTATETYPE") {
 563                         *result = Service::StateTypeToString(hc->GetStateType());
 564                         return true;
 565                 } else if (macro == "HOSTATTEMPT") {
 566                         *result = Convert::ToString(hc->GetCheckAttempt());
 567                         return true;
 568                 } else if (macro == "MAXHOSTATTEMPT") {
 569                         *result = Convert::ToString(hc->GetMaxCheckAttempts());
 570                         return true;
 571                 } else if (macro == "LASTHOSTSTATE") {
 572                         *result = StateToString(GetLastState());
 573                         return true;
 574                 } else if (macro == "LASTHOSTSTATEID") {
 575                         *result = Convert::ToString(GetLastState());
 576                         return true;
 577                 } else if (macro == "LASTHOSTSTATETYPE") {
 578                         *result = Service::StateTypeToString(GetLastStateType());
 579                         return true;
 580                 } else if (macro == "LASTHOSTSTATECHANGE") {
 581                         *result = Convert::ToString((long)hc->GetLastStateChange());
 582                         return true;
 583                 } else if (macro == "HOSTDURATIONSEC") {
 584                         *result = Convert::ToString((long)(Utility::GetTime() - hc->GetLastStateChange()));
 585                         return true;
 586                 }
 587
 588                 hccr = hc->GetLastCheckResult();
 589         }
 590
 591         if (hccr) {
 592                 if (macro == "HOSTLATENCY") {
 593                         *result = Convert::ToString(Service::CalculateLatency(hccr));
 594                         return true;
 595                 } else if (macro == "HOSTEXECUTIONTIME") {
 596                         *result = Convert::ToString(Service::CalculateExecutionTime(hccr));
 597                         return true;
 598                 } else if (macro == "HOSTOUTPUT") {
 599                         *result = hccr->GetOutput();
 600                         return true;
 601                 } else if (macro == "HOSTPERFDATA") {
 602                         *result = PluginUtility::FormatPerfdata(hccr->GetPerformanceData());
 603                         return true;
 604                 } else if (macro == "LASTHOSTCHECK") {
 605                         *result = Convert::ToString((long)hccr->GetScheduleStart());
 606                         return true;
 607                 }
 608         }
 609
 610         Dictionary::Ptr macros = GetMacros();
 611
 612         String name = macro;
 613
 614         if (name == "HOSTADDRESS")
 615                 name = "address";
 616         else if (macro == "HOSTADDRESS6")
 617                 name = "address6";
 618
 619         if (macros && macros->Contains(name)) {
 620                 *result = macros->Get(name);
 621                 return true;
 622         }
 623
 624         if (macro == "HOSTADDRESS" || macro == "HOSTADDRESS6") {
 625                 *result = GetName();
 626                 return true;
 627         }
 628
 629         return false;
 630 }