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                         parents.insert(host);
 285                 }
 286         }
 287
 288         return parents;
 289 }
 290
 291 std::set<Host::Ptr> Host::GetChildHosts(void) const
 292 {
 293         std::set<Host::Ptr> children;
 294
 295         BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjects<Host>()) {
 296                 Array::Ptr dependencies = host->GetHostDependencies();
 297
 298                 if (dependencies) {
 299                         ObjectLock olock(dependencies);
 300
 301                         BOOST_FOREACH(const Value& value, dependencies) {
 302                                 if (value == GetName())
 303                                         children.insert(host);
 304                         }
 305                 }
 306         }
 307
 308         return children;
 309 }
 310
 311 Service::Ptr Host::GetCheckService(void) const
 312 {
 313         String host_check = GetCheck();
 314
 315         if (host_check.IsEmpty())
 316                 return Service::Ptr();
 317
 318         return GetServiceByShortName(host_check);
 319 }
 320
 321 std::set<Service::Ptr> Host::GetParentServices(void) const
 322 {
 323         std::set<Service::Ptr> parents;
 324
 325         Array::Ptr dependencies = GetServiceDependencies();
 326
 327         if (dependencies) {
 328                 ObjectLock olock(dependencies);
 329
 330                 BOOST_FOREACH(const Value& value, dependencies) {
 331                         parents.insert(GetServiceByShortName(value));
 332                 }
 333         }
 334
 335         return parents;
 336 }
 337
 338 HostState Host::CalculateState(ServiceState state, bool reachable)
 339 {
 340         if (!reachable)
 341                 return HostUnreachable;
 342
 343         switch (state) {
 344                 case StateOK:
 345                 case StateWarning:
 346                         return HostUp;
 347                 default:
 348                         return HostDown;
 349         }
 350 }
 351
 352 HostState Host::GetState(void) const
 353 {
 354         ASSERT(!OwnsLock());
 355
 356         if (!IsReachable())
 357                 return HostUnreachable;
 358
 359         Service::Ptr hc = GetCheckService();
 360
 361         if (!hc)
 362                 return HostUp;
 363
 364         switch (hc->GetState()) {
 365                 case StateOK:
 366                 case StateWarning:
 367                         return HostUp;
 368                 default:
 369                         return HostDown;
 370         }
 371
 372 }
 373
 374 HostState Host::GetLastState(void) const
 375 {
 376         ASSERT(!OwnsLock());
 377
 378         if (!IsReachable())
 379                 return HostUnreachable;
 380
 381         Service::Ptr hc = GetCheckService();
 382
 383         if (!hc)
 384                 return HostUp;
 385
 386         switch (hc->GetLastState()) {
 387                 case StateOK:
 388                 case StateWarning:
 389                         return HostUp;
 390                 default:
 391                         return HostDown;
 392         }
 393 }
 394
 395 HostState Host::GetLastHardState(void) const
 396 {
 397         ASSERT(!OwnsLock());
 398
 399         if (!IsReachable())
 400                 return HostUnreachable;
 401
 402         Service::Ptr hc = GetCheckService();
 403
 404         if (!hc)
 405                 return HostUp;
 406
 407         switch (hc->GetLastHardState()) {
 408                 case StateOK:
 409                 case StateWarning:
 410                         return HostUp;
 411                 default:
 412                         return HostDown;
 413         }
 414 }
 415
 416 double Host::GetLastStateUp(void) const
 417 {
 418         ASSERT(!OwnsLock());
 419
 420         Service::Ptr hc = GetCheckService();
 421
 422         if (!hc)
 423                 return 0;
 424
 425         if (hc->GetLastStateOK() > hc->GetLastStateWarning())
 426                 return hc->GetLastStateOK();
 427         else
 428                 return hc->GetLastStateWarning();
 429 }
 430
 431 double Host::GetLastStateDown(void) const
 432 {
 433         ASSERT(!OwnsLock());
 434
 435         Service::Ptr hc = GetCheckService();
 436
 437         if (!hc)
 438                 return 0;
 439
 440         return hc->GetLastStateCritical();
 441 }
 442
 443 double Host::GetLastStateUnreachable(void) const
 444 {
 445         ASSERT(!OwnsLock());
 446
 447         Service::Ptr hc = GetCheckService();
 448
 449         if (!hc)
 450                 return 0;
 451
 452         return hc->GetLastStateUnreachable();
 453 }
 454
 455 double Host::GetLastStateChange(void) const
 456 {
 457         Service::Ptr hc = GetCheckService();
 458
 459         if (!hc)
 460                 return Application::GetStartTime();
 461
 462         return hc->GetLastStateChange();
 463 }
 464
 465
 466 double Host::GetLastHardStateChange(void) const
 467 {
 468         Service::Ptr hc = GetCheckService();
 469
 470         if (!hc)
 471                 return Application::GetStartTime();
 472
 473         return hc->GetLastHardStateChange();
 474 }
 475
 476 StateType Host::GetLastStateType(void) const
 477 {
 478         Service::Ptr hc = GetCheckService();
 479
 480         if (!hc)
 481                 return StateTypeHard;
 482
 483         return hc->GetLastStateType();
 484 }
 485
 486 StateType Host::GetStateType(void) const
 487 {
 488         Service::Ptr hc = GetCheckService();
 489
 490         if (!hc)
 491                 return StateTypeHard;
 492
 493         return hc->GetStateType();
 494 }
 495
 496 HostState Host::StateFromString(const String& state)
 497 {
 498         if (state == "UP")
 499                 return HostUp;
 500         else if (state == "DOWN")
 501                 return HostDown;
 502         else if (state == "UNREACHABLE")
 503                 return HostUnreachable;
 504         else
 505                 return HostUnreachable;
 506 }
 507
 508 String Host::StateToString(HostState state)
 509 {
 510         switch (state) {
 511                 case HostUp:
 512                         return "UP";
 513                 case HostDown:
 514                         return "DOWN";
 515                 case HostUnreachable:
 516                         return "UNREACHABLE";
 517                 default:
 518                         return "INVALID";
 519         }
 520 }
 521
 522 StateType Host::StateTypeFromString(const String& type)
 523 {
 524         if (type == "SOFT")
 525                 return StateTypeSoft;
 526         else
 527                 return StateTypeHard;
 528 }
 529
 530 String Host::StateTypeToString(StateType type)
 531 {
 532         if (type == StateTypeSoft)
 533                 return "SOFT";
 534         else
 535                 return "HARD";
 536 }
 537
 538 bool Host::ResolveMacro(const String& macro, const CheckResult::Ptr&, String *result) const
 539 {
 540         if (macro == "HOSTNAME") {
 541                 *result = GetName();
 542                 return true;
 543         }
 544         else if (macro == "HOSTDISPLAYNAME" || macro == "HOSTALIAS") {
 545                 *result = GetDisplayName();
 546                 return true;
 547         }
 548
 549         Service::Ptr hc = GetCheckService();
 550         CheckResult::Ptr hccr;
 551
 552         if (hc) {
 553                 ServiceState state = hc->GetState();
 554                 bool reachable = IsReachable();
 555
 556                 if (macro == "HOSTSTATE") {
 557                         HostState hstate = CalculateState(state, reachable);
 558
 559                         switch (hstate) {
 560                                 case HostUnreachable:
 561                                         *result = "UNREACHABLE";
 562                                         break;
 563                                 case HostUp:
 564                                         *result = "UP";
 565                                         break;
 566                                 case HostDown:
 567                                         *result = "DOWN";
 568                                         break;
 569                                 default:
 570                                         ASSERT(0);
 571                         }
 572
 573                         return true;
 574                 } else if (macro == "HOSTSTATEID") {
 575                         *result = Convert::ToString(state);
 576                         return true;
 577                 } else if (macro == "HOSTSTATETYPE") {
 578                         *result = Service::StateTypeToString(hc->GetStateType());
 579                         return true;
 580                 } else if (macro == "HOSTATTEMPT") {
 581                         *result = Convert::ToString(hc->GetCheckAttempt());
 582                         return true;
 583                 } else if (macro == "MAXHOSTATTEMPT") {
 584                         *result = Convert::ToString(hc->GetMaxCheckAttempts());
 585                         return true;
 586                 } else if (macro == "LASTHOSTSTATE") {
 587                         *result = StateToString(GetLastState());
 588                         return true;
 589                 } else if (macro == "LASTHOSTSTATEID") {
 590                         *result = Convert::ToString(GetLastState());
 591                         return true;
 592                 } else if (macro == "LASTHOSTSTATETYPE") {
 593                         *result = Service::StateTypeToString(GetLastStateType());
 594                         return true;
 595                 } else if (macro == "LASTHOSTSTATECHANGE") {
 596                         *result = Convert::ToString((long)hc->GetLastStateChange());
 597                         return true;
 598                 } else if (macro == "HOSTDURATIONSEC") {
 599                         *result = Convert::ToString((long)(Utility::GetTime() - hc->GetLastStateChange()));
 600                         return true;
 601                 }
 602
 603                 hccr = hc->GetLastCheckResult();
 604         }
 605
 606         if (hccr) {
 607                 if (macro == "HOSTLATENCY") {
 608                         *result = Convert::ToString(Service::CalculateLatency(hccr));
 609                         return true;
 610                 } else if (macro == "HOSTEXECUTIONTIME") {
 611                         *result = Convert::ToString(Service::CalculateExecutionTime(hccr));
 612                         return true;
 613                 } else if (macro == "HOSTOUTPUT") {
 614                         *result = hccr->GetOutput();
 615                         return true;
 616                 } else if (macro == "HOSTPERFDATA") {
 617                         *result = PluginUtility::FormatPerfdata(hccr->GetPerformanceData());
 618                         return true;
 619                 } else if (macro == "LASTHOSTCHECK") {
 620                         *result = Convert::ToString((long)hccr->GetScheduleStart());
 621                         return true;
 622                 }
 623         }
 624
 625         Dictionary::Ptr macros = GetMacros();
 626
 627         String name = macro;
 628
 629         if (name == "HOSTADDRESS")
 630                 name = "address";
 631         else if (macro == "HOSTADDRESS6")
 632                 name = "address6";
 633
 634         if (macros && macros->Contains(name)) {
 635                 *result = macros->Get(name);
 636                 return true;
 637         }
 638
 639         if (macro == "HOSTADDRESS" || macro == "HOSTADDRESS6") {
 640                 *result = GetName();
 641                 return true;
 642         }
 643
 644         return false;
 645 }