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