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

   1 /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
   2
   3 #include "icinga/scheduleddowntime.hpp"
   4 #include "icinga/service.hpp"
   5 #include "config/configitembuilder.hpp"
   6 #include "config/applyrule.hpp"
   7 #include "base/initialize.hpp"
   8 #include "base/configtype.hpp"
   9 #include "base/logger.hpp"
  10 #include "base/context.hpp"
  11 #include "base/exception.hpp"
  12
  13 using namespace icinga;
  14
  15 INITIALIZE_ONCE([]() {
  16         ApplyRule::RegisterType("ScheduledDowntime", { "Host", "Service" });
  17 });
  18
  19 bool ScheduledDowntime::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule)
  20 {
  21         if (!rule.EvaluateFilter(frame))
  22                 return false;
  23
  24         DebugInfo di = rule.GetDebugInfo();
  25
  26 #ifdef _DEBUG
  27         Log(LogDebug, "ScheduledDowntime")
  28                 << "Applying scheduled downtime '" << rule.GetName() << "' to object '" << checkable->GetName() << "' for rule " << di;
  29 #endif /* _DEBUG */
  30
  31         ConfigItemBuilder builder{di};
  32         builder.SetType(ScheduledDowntime::TypeInstance);
  33         builder.SetName(name);
  34         builder.SetScope(frame.Locals->ShallowClone());
  35         builder.SetIgnoreOnError(rule.GetIgnoreOnError());
  36
  37         Host::Ptr host;
  38         Service::Ptr service;
  39         tie(host, service) = GetHostService(checkable);
  40
  41         builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
  42
  43         if (service)
  44                 builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "service_name"), OpSetLiteral, MakeLiteral(service->GetShortName()), di));
  45
  46         String zone = checkable->GetZoneName();
  47
  48         if (!zone.IsEmpty())
  49                 builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "zone"), OpSetLiteral, MakeLiteral(zone), di));
  50
  51         builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "package"), OpSetLiteral, MakeLiteral(rule.GetPackage()), di));
  52
  53         builder.AddExpression(new OwnedExpression(rule.GetExpression()));
  54
  55         builder.AddExpression(new ImportDefaultTemplatesExpression());
  56
  57         ConfigItem::Ptr downtimeItem = builder.Compile();
  58         downtimeItem->Register();
  59
  60         return true;
  61 }
  62
  63 bool ScheduledDowntime::EvaluateApplyRule(const Checkable::Ptr& checkable, const ApplyRule& rule)
  64 {
  65         DebugInfo di = rule.GetDebugInfo();
  66
  67         std::ostringstream msgbuf;
  68         msgbuf << "Evaluating 'apply' rule (" << di << ")";
  69         CONTEXT(msgbuf.str());
  70
  71         Host::Ptr host;
  72         Service::Ptr service;
  73         tie(host, service) = GetHostService(checkable);
  74
  75         ScriptFrame frame(true);
  76         if (rule.GetScope())
  77                 rule.GetScope()->CopyTo(frame.Locals);
  78         frame.Locals->Set("host", host);
  79         if (service)
  80                 frame.Locals->Set("service", service);
  81
  82         Value vinstances;
  83
  84         if (rule.GetFTerm()) {
  85                 try {
  86                         vinstances = rule.GetFTerm()->Evaluate(frame);
  87                 } catch (const std::exception&) {
  88                         /* Silently ignore errors here and assume there are no instances. */
  89                         return false;
  90                 }
  91         } else {
  92                 vinstances = new Array({ "" });
  93         }
  94
  95         bool match = false;
  96
  97         if (vinstances.IsObjectType<Array>()) {
  98                 if (!rule.GetFVVar().IsEmpty())
  99                         BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
 100
 101                 Array::Ptr arr = vinstances;
 102
 103                 ObjectLock olock(arr);
 104                 for (const Value& instance : arr) {
 105                         String name = rule.GetName();
 106
 107                         if (!rule.GetFKVar().IsEmpty()) {
 108                                 frame.Locals->Set(rule.GetFKVar(), instance);
 109                                 name += instance;
 110                         }
 111
 112                         if (EvaluateApplyRuleInstance(checkable, name, frame, rule))
 113                                 match = true;
 114                 }
 115         } else if (vinstances.IsObjectType<Dictionary>()) {
 116                 if (rule.GetFVVar().IsEmpty())
 117                         BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
 118
 119                 Dictionary::Ptr dict = vinstances;
 120
 121                 for (const String& key : dict->GetKeys()) {
 122                         frame.Locals->Set(rule.GetFKVar(), key);
 123                         frame.Locals->Set(rule.GetFVVar(), dict->Get(key));
 124
 125                         if (EvaluateApplyRuleInstance(checkable, rule.GetName() + key, frame, rule))
 126                                 match = true;
 127                 }
 128         }
 129
 130         return match;
 131 }
 132
 133 void ScheduledDowntime::EvaluateApplyRules(const Host::Ptr& host)
 134 {
 135         CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
 136
 137         for (ApplyRule& rule : ApplyRule::GetRules("ScheduledDowntime")) {
 138                 if (rule.GetTargetType() != "Host")
 139                         continue;
 140
 141                 if (EvaluateApplyRule(host, rule))
 142                         rule.AddMatch();
 143         }
 144 }
 145
 146 void ScheduledDowntime::EvaluateApplyRules(const Service::Ptr& service)
 147 {
 148         CONTEXT("Evaluating 'apply' rules for service '" + service->GetName() + "'");
 149
 150         for (ApplyRule& rule : ApplyRule::GetRules("ScheduledDowntime")) {
 151                 if (rule.GetTargetType() != "Service")
 152                         continue;
 153
 154                 if (EvaluateApplyRule(service, rule))
 155                         rule.AddMatch();
 156         }
 157 }