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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2016 Icinga Development Team (https://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/servicegroup.hpp"
  21 #include "icinga/servicegroup.tcpp"
  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 #include <boost/foreach.hpp>
  30
  31 using namespace icinga;
  32
  33 REGISTER_TYPE(ServiceGroup);
  34
  35 INITIALIZE_ONCE(&ServiceGroup::RegisterObjectRuleHandler);
  36
  37 void ServiceGroup::RegisterObjectRuleHandler(void)
  38 {
  39         ObjectRule::RegisterType("ServiceGroup");
  40 }
  41
  42 bool ServiceGroup::EvaluateObjectRule(const Service::Ptr& service, const ConfigItem::Ptr& group)
  43 {
  44         String group_name = group->GetName();
  45
  46         CONTEXT("Evaluating rule for group '" + group_name + "'");
  47
  48         Host::Ptr host = service->GetHost();
  49
  50         ScriptFrame frame;
  51         if (group->GetScope())
  52                 group->GetScope()->CopyTo(frame.Locals);
  53         frame.Locals->Set("host", host);
  54         frame.Locals->Set("service", service);
  55
  56         if (!group->GetFilter()->Evaluate(frame).GetValue().ToBool())
  57                 return false;
  58
  59         Log(LogDebug, "ServiceGroup")
  60             << "Assigning membership for group '" << group_name << "' to service '" << service->GetName() << "'";
  61
  62         Array::Ptr groups = service->GetGroups();
  63         groups->Add(group_name);
  64
  65         return true;
  66 }
  67
  68 void ServiceGroup::EvaluateObjectRules(const Service::Ptr& service)
  69 {
  70         CONTEXT("Evaluating group membership for service '" + service->GetName() + "'");
  71
  72         BOOST_FOREACH(const ConfigItem::Ptr& group, ConfigItem::GetItems("ServiceGroup"))
  73         {
  74                 if (!group->GetFilter())
  75                         continue;
  76
  77                 EvaluateObjectRule(service, group);
  78         }
  79 }
  80
  81 std::set<Service::Ptr> ServiceGroup::GetMembers(void) const
  82 {
  83         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  84         return m_Members;
  85 }
  86
  87 void ServiceGroup::AddMember(const Service::Ptr& service)
  88 {
  89         service->AddGroup(GetName());
  90
  91         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  92         m_Members.insert(service);
  93 }
  94
  95 void ServiceGroup::RemoveMember(const Service::Ptr& service)
  96 {
  97         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  98         m_Members.erase(service);
  99 }
 100
 101 bool ServiceGroup::ResolveGroupMembership(const Service::Ptr& service, bool add, int rstack) {
 102
 103         if (add && rstack > 20) {
 104                 Log(LogWarning, "ServiceGroup")
 105                     << "Too many nested groups for group '" << GetName() << "': Service '"
 106                     << service->GetName() << "' membership assignment failed.";
 107
 108                 return false;
 109         }
 110
 111         Array::Ptr groups = GetGroups();
 112
 113         if (groups && groups->GetLength() > 0) {
 114                 ObjectLock olock(groups);
 115
 116                 BOOST_FOREACH(const String& name, groups) {
 117                         ServiceGroup::Ptr group = ServiceGroup::GetByName(name);
 118
 119                         if (group && !group->ResolveGroupMembership(service, add, rstack + 1))
 120                                 return false;
 121                 }
 122         }
 123
 124         if (add)
 125                 AddMember(service);
 126         else
 127                 RemoveMember(service);
 128
 129         return true;
 130 }