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 "base/dynamictype.h"
  25 #include "base/objectlock.h"
  26 #include "base/logger_fwd.h"
  27 #include "base/timer.h"
  28 #include "base/convert.h"
  29 #include "base/scriptfunction.h"
  30 #include "base/debug.h"
  31 #include "config/configitembuilder.h"
  32 #include "config/configcompilercontext.h"
  33 #include <boost/tuple/tuple.hpp>
  34 #include <boost/smart_ptr/make_shared.hpp>
  35 #include <boost/foreach.hpp>
  36
  37 using namespace icinga;
  38
  39 REGISTER_TYPE(Host);
  40
  41 void Host::Start(void)
  42 {
  43         DynamicObject::Start();
  44
  45         ASSERT(!OwnsLock());
  46
  47         Array::Ptr groups = GetGroups();
  48
  49         if (groups) {
  50                 ObjectLock olock(groups);
  51
  52                 BOOST_FOREACH(const String& name, groups) {
  53                         HostGroup::Ptr hg = HostGroup::GetByName(name);
  54
  55                         if (hg)
  56                                 hg->AddMember(GetSelf());
  57                 }
  58         }
  59 }
  60
  61 void Host::OnConfigLoaded(void)
  62 {
  63         UpdateSlaveServices();
  64 }
  65
  66 void Host::Stop(void)
  67 {
  68         DynamicObject::Stop();
  69
  70         Array::Ptr groups = GetGroups();
  71
  72         if (groups) {
  73                 ObjectLock olock(groups);
  74
  75                 BOOST_FOREACH(const String& name, groups) {
  76                         HostGroup::Ptr hg = HostGroup::GetByName(name);
  77
  78                         if (hg)
  79                                 hg->RemoveMember(GetSelf());
  80                 }
  81         }
  82
  83         // TODO: unregister slave services/notifications?
  84 }
  85
  86 String Host::GetDisplayName(void) const
  87 {
  88         if (!m_DisplayName.IsEmpty())
  89                 return m_DisplayName;
  90         else
  91                 return GetName();
  92 }
  93
  94 Array::Ptr Host::GetGroups(void) const
  95 {
  96         return m_Groups;
  97 }
  98
  99 Dictionary::Ptr Host::GetMacros(void) const
 100 {
 101         return m_Macros;
 102 }
 103
 104 Array::Ptr Host::GetHostDependencies(void) const
 105 {
 106         return m_HostDependencies;;
 107 }
 108
 109 Array::Ptr Host::GetServiceDependencies(void) const
 110 {
 111         return m_ServiceDependencies;
 112 }
 113
 114 String Host::GetCheck(void) const
 115 {
 116         return m_Check;
 117 }
 118
 119 Dictionary::Ptr Host::GetNotificationDescriptions(void) const
 120 {
 121         return m_NotificationDescriptions;
 122 }
 123
 124 bool Host::IsReachable(void) const
 125 {
 126         ASSERT(!OwnsLock());
 127
 128         std::set<Service::Ptr> parentServices = GetParentServices();
 129
 130         BOOST_FOREACH(const Service::Ptr& service, parentServices) {
 131                 ObjectLock olock(service);
 132
 133                 /* ignore pending services */
 134                 if (!service->GetLastCheckResult())
 135                         continue;
 136
 137                 /* ignore soft states */
 138                 if (service->GetStateType() == StateTypeSoft)
 139                         continue;
 140
 141                 /* ignore services states OK and Warning */
 142                 if (service->GetState() == StateOK ||
 143                     service->GetState() == StateWarning)
 144                         continue;
 145
 146                 return false;
 147         }
 148
 149         std::set<Host::Ptr> parentHosts = GetParentHosts();
 150
 151         BOOST_FOREACH(const Host::Ptr& host, parentHosts) {
 152                 Service::Ptr hc = host->GetCheckService();
 153
 154                 /* ignore hosts that don't have a check */
 155                 if (!hc)
 156                         continue;
 157
 158                 ObjectLock olock(hc);
 159
 160                 /* ignore soft states */
 161                 if (hc->GetStateType() == StateTypeSoft)
 162                         continue;
 163
 164                 /* ignore hosts that are up */
 165                 if (hc->GetState() == StateOK)
 166                         continue;
 167
 168                 return false;
 169         }
 170
 171         return true;
 172 }
 173
 174 void Host::UpdateSlaveServices(void)
 175 {
 176         ASSERT(!OwnsLock());
 177
 178         ConfigItem::Ptr item = ConfigItem::GetObject("Host", GetName());
 179
 180         /* Don't create slave services unless we own this object */
 181         if (!item)
 182                 return;
 183
 184         if (!m_ServiceDescriptions)
 185                 return;
 186
 187         ObjectLock olock(m_ServiceDescriptions);
 188         String svcname;
 189         Value svcdesc;
 190         BOOST_FOREACH(boost::tie(svcname, svcdesc), m_ServiceDescriptions) {
 191                 if (svcdesc.IsScalar())
 192                         svcname = svcdesc;
 193
 194                 std::ostringstream namebuf;
 195                 namebuf << GetName() << ":" << svcname;
 196                 String name = namebuf.str();
 197
 198                 std::vector<String> path;
 199                 path.push_back("services");
 200                 path.push_back(svcname);
 201
 202                 DebugInfo di;
 203                 item->GetLinkedExpressionList()->FindDebugInfoPath(path, di);
 204
 205                 if (di.Path.IsEmpty())
 206                         di = item->GetDebugInfo();
 207
 208                 ConfigItemBuilder::Ptr builder = boost::make_shared<ConfigItemBuilder>(di);
 209                 builder->SetType("Service");
 210                 builder->SetName(name);
 211                 builder->AddExpression("host_name", OperatorSet, GetName());
 212                 builder->AddExpression("display_name", OperatorSet, svcname);
 213                 builder->AddExpression("short_name", OperatorSet, svcname);
 214
 215                 if (!svcdesc.IsObjectType<Dictionary>())
 216                         BOOST_THROW_EXCEPTION(std::invalid_argument("Service description must be either a string or a dictionary."));
 217
 218                 Dictionary::Ptr service = svcdesc;
 219
 220                 Array::Ptr templates = service->Get("templates");
 221
 222                 if (templates) {
 223                         ObjectLock olock(templates);
 224
 225                         BOOST_FOREACH(const Value& tmpl, templates) {
 226                                 builder->AddParent(tmpl);
 227                         }
 228                 }
 229
 230                 /* Clone attributes from the service expression list. */
 231                 ExpressionList::Ptr svc_exprl = boost::make_shared<ExpressionList>();
 232                 item->GetLinkedExpressionList()->ExtractPath(path, svc_exprl);
 233
 234                 std::vector<String> dpath;
 235                 dpath.push_back("templates");
 236                 svc_exprl->ErasePath(dpath);
 237
 238                 builder->AddExpressionList(svc_exprl);
 239
 240                 ConfigItem::Ptr serviceItem = builder->Compile();
 241                 serviceItem->Register();
 242                 DynamicObject::Ptr dobj = serviceItem->Commit();
 243                 dobj->OnConfigLoaded();
 244         }
 245 }
 246
 247 std::set<Service::Ptr> Host::GetServices(void) const
 248 {
 249         boost::mutex::scoped_lock lock(m_ServicesMutex);
 250
 251         std::set<Service::Ptr> services;
 252         Service::WeakPtr wservice;
 253         BOOST_FOREACH(boost::tie(boost::tuples::ignore, wservice), m_Services) {
 254                 Service::Ptr service = wservice.lock();
 255
 256                 if (!service)
 257                         continue;
 258
 259                 services.insert(service);
 260         }
 261
 262         return services;
 263 }
 264
 265 void Host::AddService(const Service::Ptr& service)
 266 {
 267         boost::mutex::scoped_lock lock(m_ServicesMutex);
 268
 269         m_Services[service->GetShortName()] = service;
 270 }
 271
 272 void Host::RemoveService(const Service::Ptr& service)
 273 {
 274         boost::mutex::scoped_lock lock(m_ServicesMutex);
 275
 276         m_Services.erase(service->GetShortName());
 277 }
 278
 279 int Host::GetTotalServices(void) const
 280 {
 281         return GetServices().size();
 282 }
 283
 284 Service::Ptr Host::GetServiceByShortName(const Value& name) const
 285 {
 286         if (name.IsScalar()) {
 287                 {
 288                         boost::mutex::scoped_lock lock(m_ServicesMutex);
 289
 290                         std::map<String, Service::Ptr>::const_iterator it = m_Services.find(name);
 291
 292                         if (it != m_Services.end())
 293                                 return it->second;
 294                 }
 295
 296                 return Service::Ptr();
 297         } else if (name.IsObjectType<Dictionary>()) {
 298                 Dictionary::Ptr dict = name;
 299                 String short_name;
 300
 301                 return Service::GetByNamePair(dict->Get("host"), dict->Get("service"));
 302         } else {
 303                 BOOST_THROW_EXCEPTION(std::invalid_argument("Host/Service name pair is invalid: " + name.Serialize()));
 304         }
 305 }
 306
 307 std::set<Host::Ptr> Host::GetParentHosts(void) const
 308 {
 309         std::set<Host::Ptr> parents;
 310
 311         Array::Ptr dependencies = GetHostDependencies();
 312
 313         if (dependencies) {
 314                 ObjectLock olock(dependencies);
 315
 316                 BOOST_FOREACH(const Value& value, dependencies) {
 317                         if (value == GetName())
 318                                 continue;
 319
 320                         Host::Ptr host = GetByName(value);
 321
 322                         if (!host)
 323                                 continue;
 324
 325                         parents.insert(host);
 326                 }
 327         }
 328
 329         return parents;
 330 }
 331
 332 std::set<Host::Ptr> Host::GetChildHosts(void) const
 333 {
 334         std::set<Host::Ptr> childs;
 335
 336         BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjects<Host>()) {
 337                 Array::Ptr dependencies = host->GetHostDependencies();
 338
 339                 if (dependencies) {
 340                         ObjectLock olock(dependencies);
 341
 342                         BOOST_FOREACH(const Value& value, dependencies) {
 343                                 if (value == GetName())
 344                                         childs.insert(host);
 345                         }
 346                 }
 347         }
 348
 349         return childs;
 350
 351 }
 352
 353 Service::Ptr Host::GetCheckService(void) const
 354 {
 355         String host_check = GetCheck();
 356
 357         if (host_check.IsEmpty())
 358                 return Service::Ptr();
 359
 360         return GetServiceByShortName(host_check);
 361 }
 362
 363 std::set<Service::Ptr> Host::GetParentServices(void) const
 364 {
 365         std::set<Service::Ptr> parents;
 366
 367         Array::Ptr dependencies = GetServiceDependencies();
 368
 369         if (dependencies) {
 370                 ObjectLock olock(dependencies);
 371
 372                 BOOST_FOREACH(const Value& value, dependencies) {
 373                         parents.insert(GetServiceByShortName(value));
 374                 }
 375         }
 376
 377         return parents;
 378 }
 379
 380 HostState Host::CalculateState(ServiceState state, bool reachable)
 381 {
 382         if (!reachable)
 383                 return HostUnreachable;
 384
 385         switch (state) {
 386                 case StateOK:
 387                 case StateWarning:
 388                         return HostUp;
 389                 default:
 390                         return HostDown;
 391         }
 392 }
 393
 394 HostState Host::GetState(void) const
 395 {
 396         ASSERT(!OwnsLock());
 397
 398         if (!IsReachable())
 399                 return HostUnreachable;
 400
 401         Service::Ptr hc = GetCheckService();
 402
 403         if (!hc)
 404                 return HostUp;
 405
 406         switch (hc->GetState()) {
 407                 case StateOK:
 408                 case StateWarning:
 409                         return HostUp;
 410                 default:
 411                         return HostDown;
 412         }
 413
 414 }
 415
 416 HostState Host::GetLastState(void) const
 417 {
 418         ASSERT(!OwnsLock());
 419
 420         if (!IsReachable())
 421                 return HostUnreachable;
 422
 423         Service::Ptr hc = GetCheckService();
 424
 425         if (!hc)
 426                 return HostUp;
 427
 428         switch (hc->GetLastState()) {
 429                 case StateOK:
 430                 case StateWarning:
 431                         return HostUp;
 432                 default:
 433                         return HostDown;
 434         }
 435 }
 436
 437 HostState Host::GetLastHardState(void) const
 438 {
 439         ASSERT(!OwnsLock());
 440
 441         if (!IsReachable())
 442                 return HostUnreachable;
 443
 444         Service::Ptr hc = GetCheckService();
 445
 446         if (!hc)
 447                 return HostUp;
 448
 449         switch (hc->GetLastHardState()) {
 450                 case StateOK:
 451                 case StateWarning:
 452                         return HostUp;
 453                 default:
 454                         return HostDown;
 455         }
 456 }
 457
 458 double Host::GetLastStateUp(void) const
 459 {
 460         ASSERT(!OwnsLock());
 461
 462         Service::Ptr hc = GetCheckService();
 463
 464         if (!hc)
 465                 return 0;
 466
 467         if (hc->GetLastStateOK() > hc->GetLastStateWarning())
 468                 return hc->GetLastStateOK();
 469         else
 470                 return hc->GetLastStateWarning();
 471 }
 472
 473 double Host::GetLastStateDown(void) const
 474 {
 475         ASSERT(!OwnsLock());
 476
 477         Service::Ptr hc = GetCheckService();
 478
 479         if (!hc)
 480                 return 0;
 481
 482         return hc->GetLastStateCritical();
 483 }
 484
 485 double Host::GetLastStateUnreachable(void) const
 486 {
 487         ASSERT(!OwnsLock());
 488
 489         Service::Ptr hc = GetCheckService();
 490
 491         if (!hc)
 492                 return 0;
 493
 494         return hc->GetLastStateUnreachable();
 495 }
 496
 497 double Host::GetLastStateChange(void) const
 498 {
 499         Service::Ptr hc = GetCheckService();
 500
 501         if (!hc)
 502                 return IcingaApplication::GetInstance()->GetStartTime();
 503
 504         return hc->GetLastStateChange();
 505 }
 506
 507
 508 double Host::GetLastHardStateChange(void) const
 509 {
 510         Service::Ptr hc = GetCheckService();
 511
 512         if (!hc)
 513                 return IcingaApplication::GetInstance()->GetStartTime();
 514
 515         return hc->GetLastHardStateChange();
 516 }
 517
 518 StateType Host::GetLastStateType(void) const
 519 {
 520         Service::Ptr hc = GetCheckService();
 521
 522         if (!hc)
 523                 return StateTypeHard;
 524
 525         return hc->GetLastStateType();
 526 }
 527
 528 StateType Host::GetStateType(void) const
 529 {
 530         Service::Ptr hc = GetCheckService();
 531
 532         if (!hc)
 533                 return StateTypeHard;
 534
 535         return hc->GetStateType();
 536 }
 537
 538 String Host::StateToString(HostState state)
 539 {
 540         switch (state) {
 541                 case HostUp:
 542                         return "UP";
 543                 case HostDown:
 544                         return "DOWN";
 545                 case HostUnreachable:
 546                         return "UNREACHABLE";
 547                 default:
 548                         return "INVALID";
 549         }
 550 }
 551
 552 bool Host::ResolveMacro(const String& macro, const Dictionary::Ptr&, String *result) const
 553 {
 554         if (macro == "HOSTNAME") {
 555                 *result = GetName();
 556                 return true;
 557         }
 558         else if (macro == "HOSTDISPLAYNAME" || macro == "HOSTALIAS") {
 559                 *result = GetDisplayName();
 560                 return true;
 561         }
 562
 563         Service::Ptr hc = GetCheckService();
 564         Dictionary::Ptr hccr;
 565
 566         if (hc) {
 567                 ServiceState state = hc->GetState();
 568                 bool reachable = IsReachable();
 569
 570                 if (macro == "HOSTSTATE") {
 571                         HostState hstate = CalculateState(state, reachable);
 572
 573                         switch (hstate) {
 574                                 case HostUnreachable:
 575                                         *result = "UNREACHABLE";
 576                                         break;
 577                                 case HostUp:
 578                                         *result = "UP";
 579                                         break;
 580                                 case HostDown:
 581                                         *result = "DOWN";
 582                                         break;
 583                                 default:
 584                                         ASSERT(0);
 585                         }
 586
 587                         return true;
 588                 } else if (macro == "HOSTSTATEID") {
 589                         *result = Convert::ToString(state);
 590                         return true;
 591                 } else if (macro == "HOSTSTATETYPE") {
 592                         *result = Service::StateTypeToString(hc->GetStateType());
 593                         return true;
 594                 } else if (macro == "HOSTATTEMPT") {
 595                         *result = Convert::ToString(hc->GetCurrentCheckAttempt());
 596                         return true;
 597                 } else if (macro == "MAXHOSTATTEMPT") {
 598                         *result = Convert::ToString(hc->GetMaxCheckAttempts());
 599                         return true;
 600                 } else if (macro == "LASTHOSTSTATE") {
 601                         *result = StateToString(GetLastState());
 602                         return true;
 603                 } else if (macro == "LASTHOSTSTATEID") {
 604                         *result = Convert::ToString(GetLastState());
 605                         return true;
 606                 } else if (macro == "LASTHOSTSTATETYPE") {
 607                         *result = Service::StateTypeToString(GetLastStateType());
 608                         return true;
 609                 } else if (macro == "LASTHOSTSTATECHANGE") {
 610                         *result = Convert::ToString((long)hc->GetLastStateChange());
 611                         return true;
 612                 }
 613
 614                 hccr = hc->GetLastCheckResult();
 615         }
 616
 617         if (hccr) {
 618                 if (macro == "HOSTLATENCY") {
 619                         *result = Convert::ToString(Service::CalculateLatency(hccr));
 620                         return true;
 621                 } else if (macro == "HOSTEXECUTIONTIME") {
 622                         *result = Convert::ToString(Service::CalculateExecutionTime(hccr));
 623                         return true;
 624                 } else if (macro == "HOSTOUTPUT") {
 625                         *result = hccr->Get("output");
 626                         return true;
 627                 } else if (macro == "HOSTPERFDATA") {
 628                         *result = hccr->Get("performance_data_raw");
 629                         return true;
 630                 } else if (macro == "LASTHOSTCHECK") {
 631                         *result = Convert::ToString((long)hccr->Get("schedule_start"));
 632                         return true;
 633                 }
 634         }
 635
 636         Dictionary::Ptr macros = GetMacros();
 637
 638         String name = macro;
 639
 640         if (name == "HOSTADDRESS")
 641                 name = "address";
 642         else if (macro == "HOSTADDRESS6")
 643                 name = "address6";
 644
 645         if (macros && macros->Contains(name)) {
 646                 *result = macros->Get(name);
 647                 return true;
 648         }
 649
 650         if (macro == "HOSTADDRESS" || macro == "HOSTADDRESS6") {
 651                 *result = GetName();
 652                 return true;
 653         }
 654
 655         return false;
 656 }
 657
 658 void Host::InternalSerialize(const Dictionary::Ptr& bag, int attributeTypes) const
 659 {
 660         DynamicObject::InternalSerialize(bag, attributeTypes);
 661
 662         if (attributeTypes & Attribute_Config) {
 663                 bag->Set("display_name", m_DisplayName);
 664                 bag->Set("groups", m_Groups);
 665                 bag->Set("macros", m_Macros);
 666                 bag->Set("hostdependencies", m_HostDependencies);
 667                 bag->Set("servicedependencies", m_ServiceDependencies);
 668                 bag->Set("check", m_Check);
 669                 bag->Set("services", m_ServiceDescriptions);
 670                 bag->Set("notifications", m_NotificationDescriptions);
 671         }
 672 }
 673
 674 void Host::InternalDeserialize(const Dictionary::Ptr& bag, int attributeTypes)
 675 {
 676         DynamicObject::InternalDeserialize(bag, attributeTypes);
 677
 678         if (attributeTypes & Attribute_Config) {
 679                 m_DisplayName = bag->Get("display_name");
 680                 m_Groups = bag->Get("groups");
 681                 m_Macros = bag->Get("macros");
 682                 m_HostDependencies = bag->Get("hostdependencies");
 683                 m_ServiceDependencies = bag->Get("servicedependencies");
 684                 m_Check = bag->Get("check");
 685                 m_ServiceDescriptions = bag->Get("services");
 686                 m_NotificationDescriptions = bag->Get("notifications");
 687         }
 688 }