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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://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 groupName = group->GetName();
  41
  42         CONTEXT("Evaluating rule for group '" + groupName + "'");
  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 '" << groupName << "' to service '" << service->GetName() << "'";
  57
  58         Array::Ptr groups = service->GetGroups();
  59
  60         if (groups && !groups->Contains(groupName))
  61                 groups->Add(groupName);
  62
  63         return true;
  64 }
  65
  66 void ServiceGroup::EvaluateObjectRules(const Service::Ptr& service)
  67 {
  68         CONTEXT("Evaluating group membership for service '" + service->GetName() + "'");
  69
  70         for (const ConfigItem::Ptr& group : ConfigItem::GetItems(ServiceGroup::TypeInstance))
  71         {
  72                 if (!group->GetFilter())
  73                         continue;
  74
  75                 EvaluateObjectRule(service, group);
  76         }
  77 }
  78
  79 std::set<Service::Ptr> ServiceGroup::GetMembers() const
  80 {
  81         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  82         return m_Members;
  83 }
  84
  85 void ServiceGroup::AddMember(const Service::Ptr& service)
  86 {
  87         service->AddGroup(GetName());
  88
  89         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  90         m_Members.insert(service);
  91 }
  92
  93 void ServiceGroup::RemoveMember(const Service::Ptr& service)
  94 {
  95         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  96         m_Members.erase(service);
  97 }
  98
  99 bool ServiceGroup::ResolveGroupMembership(const Service::Ptr& service, bool add, int rstack) {
 100
 101         if (add && rstack > 20) {
 102                 Log(LogWarning, "ServiceGroup")
 103                         << "Too many nested groups for group '" << GetName() << "': Service '"
 104                         << service->GetName() << "' membership assignment failed.";
 105
 106                 return false;
 107         }
 108
 109         Array::Ptr groups = GetGroups();
 110
 111         if (groups && groups->GetLength() > 0) {
 112                 ObjectLock olock(groups);
 113
 114                 for (const String& name : groups) {
 115                         ServiceGroup::Ptr group = ServiceGroup::GetByName(name);
 116
 117                         if (group && !group->ResolveGroupMembership(service, add, rstack + 1))
 118                                 return false;
 119                 }
 120         }
 121
 122         if (add)
 123                 AddMember(service);
 124         else
 125                 RemoveMember(service);
 126
 127         return true;
 128 }