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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2014 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/notification.hpp"
  21 #include "icinga/service.hpp"
  22 #include "config/configitembuilder.hpp"
  23 #include "config/applyrule.hpp"
  24 #include "config/configcompilercontext.hpp"
  25 #include "base/initialize.hpp"
  26 #include "base/dynamictype.hpp"
  27 #include "base/logger.hpp"
  28 #include "base/context.hpp"
  29 #include "base/workqueue.hpp"
  30 #include "base/scripterror.hpp"
  31 #include <boost/foreach.hpp>
  32
  33 using namespace icinga;
  34
  35 INITIALIZE_ONCE(&Notification::RegisterApplyRuleHandler);
  36
  37 void Notification::RegisterApplyRuleHandler(void)
  38 {
  39         std::vector<String> targets;
  40         targets.push_back("Host");
  41         targets.push_back("Service");
  42         ApplyRule::RegisterType("Notification", targets);
  43 }
  44
  45 void Notification::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule)
  46 {
  47         DebugInfo di = rule.GetDebugInfo();
  48
  49         Log(LogDebug, "Notification")
  50             << "Applying notification '" << name << "' to object '" << checkable->GetName() << "' for rule " << di;
  51
  52         ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
  53         builder->SetType("Notification");
  54         builder->SetName(name);
  55         builder->SetScope(frame.Locals);
  56
  57         Host::Ptr host;
  58         Service::Ptr service;
  59         tie(host, service) = GetHostService(checkable);
  60
  61         builder->AddExpression(new SetExpression(MakeIndexer("host_name"), OpSetLiteral, MakeLiteral(host->GetName()), false, di));
  62
  63         if (service)
  64                 builder->AddExpression(new SetExpression(MakeIndexer("service_name"), OpSetLiteral, MakeLiteral(service->GetShortName()), false, di));
  65
  66         String zone = checkable->GetZone();
  67
  68         if (!zone.IsEmpty())
  69                 builder->AddExpression(new SetExpression(MakeIndexer("zone"), OpSetLiteral, MakeLiteral(zone), false, di));
  70
  71         builder->AddExpression(new OwnedExpression(rule.GetExpression()));
  72
  73         ConfigItem::Ptr notificationItem = builder->Compile();
  74         notificationItem->Commit();
  75 }
  76
  77 bool Notification::EvaluateApplyRule(const Checkable::Ptr& checkable, const ApplyRule& rule)
  78 {
  79         DebugInfo di = rule.GetDebugInfo();
  80
  81         std::ostringstream msgbuf;
  82         msgbuf << "Evaluating 'apply' rule (" << di << ")";
  83         CONTEXT(msgbuf.str());
  84
  85         Host::Ptr host;
  86         Service::Ptr service;
  87         tie(host, service) = GetHostService(checkable);
  88
  89         ScriptFrame frame;
  90         if (rule.GetScope())
  91                 rule.GetScope()->CopyTo(frame.Locals);
  92         frame.Locals->Set("host", host);
  93         if (service)
  94                 frame.Locals->Set("service", service);
  95
  96         if (!rule.EvaluateFilter(frame))
  97                 return false;
  98
  99         Value vinstances;
 100
 101         if (rule.GetFTerm()) {
 102                 vinstances = rule.GetFTerm()->Evaluate(frame);
 103         } else {
 104                 Array::Ptr instances = new Array();
 105                 instances->Add("");
 106                 vinstances = instances;
 107         }
 108
 109         if (vinstances.IsObjectType<Array>()) {
 110                 if (!rule.GetFVVar().IsEmpty())
 111                         BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
 112
 113                 Array::Ptr arr = vinstances;
 114
 115                 ObjectLock olock(arr);
 116                 BOOST_FOREACH(const String& instance, arr) {
 117                         String name = rule.GetName();
 118
 119                         if (!rule.GetFKVar().IsEmpty()) {
 120                                 frame.Locals->Set(rule.GetFKVar(), instance);
 121                                 name += instance;
 122                         }
 123
 124                         EvaluateApplyRuleInstance(checkable, name, frame, rule);
 125                 }
 126         } else if (vinstances.IsObjectType<Dictionary>()) {
 127                 if (rule.GetFVVar().IsEmpty())
 128                         BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
 129
 130                 Dictionary::Ptr dict = vinstances;
 131
 132                 ObjectLock olock(dict);
 133                 BOOST_FOREACH(const Dictionary::Pair& kv, dict) {
 134                         frame.Locals->Set(rule.GetFKVar(), kv.first);
 135                         frame.Locals->Set(rule.GetFVVar(), kv.second);
 136
 137                         EvaluateApplyRuleInstance(checkable, rule.GetName() + kv.first, frame, rule);
 138                 }
 139         }
 140
 141         return true;
 142 }
 143
 144 void Notification::EvaluateApplyRules(const Host::Ptr& host)
 145 {
 146         CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
 147
 148         BOOST_FOREACH(ApplyRule& rule, ApplyRule::GetRules("Notification"))
 149         {
 150                 if (rule.GetTargetType() != "Host")
 151                         continue;
 152
 153                 try {
 154                         if (EvaluateApplyRule(host, rule))
 155                                 rule.AddMatch();
 156                 } catch (const ScriptError& ex) {
 157                         ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), ex.GetDebugInfo());
 158                 }
 159         }
 160 }
 161
 162 void Notification::EvaluateApplyRules(const Service::Ptr& service)
 163 {
 164         CONTEXT("Evaluating 'apply' rules for service '" + service->GetName() + "'");
 165
 166         BOOST_FOREACH(ApplyRule& rule, ApplyRule::GetRules("Notification")) {
 167                 if (rule.GetTargetType() != "Service")
 168                         continue;
 169
 170                 try {
 171                         if (EvaluateApplyRule(service, rule))
 172                                 rule.AddMatch();
 173                 } catch (const ScriptError& ex) {
 174                         ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), ex.GetDebugInfo());
 175                 }
 176         }
 177 }