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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/)  *
   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/servicegroup.hpp"
  21 #include "icinga/servicegroup-ti.cpp"
  22 #include "config/objectrule.hpp"
  23 #include "config/configitem.hpp"
  24 #include "base/configtype.hpp"
  25 #include "base/objectlock.hpp"
  26 #include "base/logger.hpp"
  27 #include "base/context.hpp"
  28 #include "base/workqueue.hpp"
  29
  30 using namespace icinga;
  31
  32 REGISTER_TYPE(ServiceGroup);
  33
  34 INITIALIZE_ONCE([]() {
  35         ObjectRule::RegisterType("ServiceGroup");
  36 });
  37
  38 bool ServiceGroup::EvaluateObjectRule(const Service::Ptr& service, const ConfigItem::Ptr& group)
  39 {
  40         String group_name = group->GetName();
  41
  42         CONTEXT("Evaluating rule for group '" + group_name + "'");
  43
  44         Host::Ptr host = service->GetHost();
  45
  46         ScriptFrame frame(true);
  47         if (group->GetScope())
  48                 group->GetScope()->CopyTo(frame.Locals);
  49         frame.Locals->Set("host", host);
  50         frame.Locals->Set("service", service);
  51
  52         if (!group->GetFilter()->Evaluate(frame).GetValue().ToBool())
  53                 return false;
  54
  55         Log(LogDebug, "ServiceGroup")
  56                 << "Assigning membership for group '" << group_name << "' to service '" << service->GetName() << "'";
  57
  58         Array::Ptr groups = service->GetGroups();
  59         groups->Add(group_name);
  60
  61         return true;
  62 }
  63
  64 void ServiceGroup::EvaluateObjectRules(const Service::Ptr& service)
  65 {
  66         CONTEXT("Evaluating group membership for service '" + service->GetName() + "'");
  67
  68         for (const ConfigItem::Ptr& group : ConfigItem::GetItems(ServiceGroup::TypeInstance))
  69         {
  70                 if (!group->GetFilter())
  71                         continue;
  72
  73                 EvaluateObjectRule(service, group);
  74         }
  75 }
  76
  77 std::set<Service::Ptr> ServiceGroup::GetMembers() const
  78 {
  79         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  80         return m_Members;
  81 }
  82
  83 void ServiceGroup::AddMember(const Service::Ptr& service)
  84 {
  85         service->AddGroup(GetName());
  86
  87         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  88         m_Members.insert(service);
  89 }
  90
  91 void ServiceGroup::RemoveMember(const Service::Ptr& service)
  92 {
  93         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  94         m_Members.erase(service);
  95 }
  96
  97 bool ServiceGroup::ResolveGroupMembership(const Service::Ptr& service, bool add, int rstack) {
  98
  99         if (add && rstack > 20) {
 100                 Log(LogWarning, "ServiceGroup")
 101                         << "Too many nested groups for group '" << GetName() << "': Service '"
 102                         << service->GetName() << "' membership assignment failed.";
 103
 104                 return false;
 105         }
 106
 107         Array::Ptr groups = GetGroups();
 108
 109         if (groups && groups->GetLength() > 0) {
 110                 ObjectLock olock(groups);
 111
 112                 for (const String& name : groups) {
 113                         ServiceGroup::Ptr group = ServiceGroup::GetByName(name);
 114
 115                         if (group && !group->ResolveGroupMembership(service, add, rstack + 1))
 116                                 return false;
 117                 }
 118         }
 119
 120         if (add)
 121                 AddMember(service);
 122         else
 123                 RemoveMember(service);
 124
 125         return true;
 126 }