granicus.if.org Git - icinga2/blob - lib/icinga/servicegroup.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/servicegroup.h"
  21 #include "config/objectrule.h"
  22 #include "base/dynamictype.h"
  23 #include "base/objectlock.h"
  24 #include "base/logger_fwd.h"
  25 #include "base/context.h"
  26 #include <boost/foreach.hpp>
  27
  28 using namespace icinga;
  29
  30 REGISTER_TYPE(ServiceGroup);
  31
  32 INITIALIZE_ONCE(&ServiceGroup::RegisterObjectRuleHandler);
  33
  34 void ServiceGroup::RegisterObjectRuleHandler(void)
  35 {
  36         ObjectRule::RegisterType("ServiceGroup", &ServiceGroup::EvaluateObjectRules);
  37 }
  38
  39 bool ServiceGroup::EvaluateObjectRule(const Service::Ptr service, const ObjectRule& rule)
  40 {
  41         DebugInfo di = rule.GetDebugInfo();
  42
  43         std::ostringstream msgbuf;
  44         msgbuf << "Evaluating 'object' rule (" << di << ")";
  45         CONTEXT(msgbuf.str());
  46
  47         Host::Ptr host = service->GetHost();
  48
  49         Dictionary::Ptr locals = make_shared<Dictionary>();
  50         locals->Set("host", host);
  51         locals->Set("service", service);
  52
  53         if (!rule.EvaluateFilter(locals))
  54                 return false;
  55
  56         std::ostringstream msgbuf2;
  57         msgbuf2 << "Assigning membership for group '" << rule.GetName() << "' to service '" << service->GetName() << "' for rule " << di;
  58         Log(LogDebug, "icinga", msgbuf2.str());
  59
  60         String group_name = rule.GetName();
  61         ServiceGroup::Ptr group = ServiceGroup::GetByName(group_name);
  62
  63         if (!group) {
  64                 Log(LogCritical, "icinga", "Invalid membership assignment. Group '" + group_name + "' does not exist.");
  65                 return false;
  66         }
  67
  68         /* assign service group membership */
  69         group->ResolveGroupMembership(service, true);
  70
  71         /* update groups attribute for apply */
  72         service->AddGroup(group_name);
  73
  74         return true;
  75 }
  76
  77 void ServiceGroup::EvaluateObjectRules(const std::vector<ObjectRule>& rules)
  78 {
  79         BOOST_FOREACH(const ObjectRule& rule, rules) {
  80                 BOOST_FOREACH(const Service::Ptr& service, DynamicType::GetObjects<Service>()) {
  81                         CONTEXT("Evaluating group membership in '" + rule.GetName() + "' for service '" + service->GetName() + "'");
  82
  83                         EvaluateObjectRule(service, rule);
  84                 }
  85         }
  86 }
  87
  88 std::set<Service::Ptr> ServiceGroup::GetMembers(void) const
  89 {
  90         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  91         return m_Members;
  92 }
  93
  94 void ServiceGroup::AddMember(const Service::Ptr& service)
  95 {
  96         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
  97         m_Members.insert(service);
  98 }
  99
 100 void ServiceGroup::RemoveMember(const Service::Ptr& service)
 101 {
 102         boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
 103         m_Members.erase(service);
 104 }
 105
 106 bool ServiceGroup::ResolveGroupMembership(Service::Ptr const& service, bool add, int rstack) {
 107
 108         if (add && rstack > 20) {
 109                 Log(LogWarning, "icinga", "Too many nested groups for group '" + GetName() + "': Service '" +
 110                     service->GetName() + "' membership assignment failed.");
 111
 112                 return false;
 113         }
 114
 115         Array::Ptr groups = GetGroups();
 116
 117         if (groups && groups->GetLength() > 0) {
 118                 ObjectLock olock(groups);
 119
 120                 BOOST_FOREACH(const String& name, groups) {
 121                         ServiceGroup::Ptr group = ServiceGroup::GetByName(name);
 122
 123                         if (group && !group->ResolveGroupMembership(service, add, rstack + 1))
 124                                 return false;
 125                 }
 126         }
 127
 128         if (add)
 129                 AddMember(service);
 130         else
 131                 RemoveMember(service);
 132
 133         return true;
 134 }