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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org)    *
   4  *                                                                            *
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   6  * modify it under the terms of the GNU General Public License                *
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   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,            *
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  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
  14  *                                                                            *
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
  18  ******************************************************************************/
  19
  20 #include "icinga/service.hpp"
  21 #include "icinga/dependency.hpp"
  22 #include "base/logger_fwd.hpp"
  23 #include <boost/foreach.hpp>
  24
  25 using namespace icinga;
  26
  27 void Checkable::AddDependency(const Dependency::Ptr& dep)
  28 {
  29         boost::mutex::scoped_lock lock(m_DependencyMutex);
  30         m_Dependencies.insert(dep);
  31 }
  32
  33 void Checkable::RemoveDependency(const Dependency::Ptr& dep)
  34 {
  35         boost::mutex::scoped_lock lock(m_DependencyMutex);
  36         m_Dependencies.erase(dep);
  37 }
  38
  39 std::set<Dependency::Ptr> Checkable::GetDependencies(void) const
  40 {
  41         boost::mutex::scoped_lock lock(m_DependencyMutex);
  42         return m_Dependencies;
  43 }
  44
  45 void Checkable::AddReverseDependency(const Dependency::Ptr& dep)
  46 {
  47         boost::mutex::scoped_lock lock(m_DependencyMutex);
  48         m_ReverseDependencies.insert(dep);
  49 }
  50
  51 void Checkable::RemoveReverseDependency(const Dependency::Ptr& dep)
  52 {
  53         boost::mutex::scoped_lock lock(m_DependencyMutex);
  54         m_ReverseDependencies.erase(dep);
  55 }
  56
  57 std::set<Dependency::Ptr> Checkable::GetReverseDependencies(void) const
  58 {
  59         boost::mutex::scoped_lock lock(m_DependencyMutex);
  60         return m_ReverseDependencies;
  61 }
  62
  63 bool Checkable::IsReachable(DependencyType dt, Dependency::Ptr *failedDependency, int rstack) const
  64 {
  65         if (rstack > 20) {
  66                 Log(LogWarning, "Checkable", "Too many nested dependencies for service '" + GetName() + "': Dependency failed.");
  67
  68                 return false;
  69         }
  70
  71         BOOST_FOREACH(const Checkable::Ptr& service, GetParents()) {
  72                 if (!service->IsReachable(dt, failedDependency, rstack + 1))
  73                         return false;
  74         }
  75
  76         /* implicit dependency on host if this is a service */
  77         const Service *service = dynamic_cast<const Service *>(this);
  78         if (service && (dt == DependencyState || dt == DependencyNotification)) {
  79                 Host::Ptr host = service->GetHost();
  80
  81                 if (host && host->GetState() != HostUp && host->GetStateType() == StateTypeHard) {
  82                         if (failedDependency)
  83                                 *failedDependency = Dependency::Ptr();
  84
  85                         return false;
  86                 }
  87         }
  88
  89         BOOST_FOREACH(const Dependency::Ptr& dep, GetDependencies()) {
  90                 if (!dep->IsAvailable(dt)) {
  91                         if (failedDependency)
  92                                 *failedDependency = dep;
  93
  94                         return false;
  95                 }
  96         }
  97
  98         if (failedDependency)
  99                 *failedDependency = Dependency::Ptr();
 100
 101         return true;
 102 }
 103
 104 std::set<Checkable::Ptr> Checkable::GetParents(void) const
 105 {
 106         std::set<Checkable::Ptr> parents;
 107
 108         BOOST_FOREACH(const Dependency::Ptr& dep, GetDependencies()) {
 109                 Checkable::Ptr parent = dep->GetParent();
 110
 111                 if (parent)
 112                         parents.insert(parent);
 113         }
 114
 115         return parents;
 116 }
 117
 118 std::set<Checkable::Ptr> Checkable::GetChildren(void) const
 119 {
 120         std::set<Checkable::Ptr> parents;
 121
 122         BOOST_FOREACH(const Dependency::Ptr& dep, GetReverseDependencies()) {
 123                 Checkable::Ptr service = dep->GetChild();
 124
 125                 if (service)
 126                         parents.insert(service);
 127         }
 128
 129         return parents;
 130 }