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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2016 Icinga Development Team (https://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.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")
  67                     << "Too many nested dependencies for service '" << GetName() << "': Dependency failed.";
  68
  69                 return false;
  70         }
  71
  72         BOOST_FOREACH(const Checkable::Ptr& checkable, GetParents()) {
  73                 if (!checkable->IsReachable(dt, failedDependency, rstack + 1))
  74                         return false;
  75         }
  76
  77         /* implicit dependency on host if this is a service */
  78         const Service *service = dynamic_cast<const Service *>(this);
  79         if (service && (dt == DependencyState || dt == DependencyNotification)) {
  80                 Host::Ptr host = service->GetHost();
  81
  82                 if (host && host->GetState() != HostUp && host->GetStateType() == StateTypeHard) {
  83                         if (failedDependency)
  84                                 *failedDependency = Dependency::Ptr();
  85
  86                         return false;
  87                 }
  88         }
  89
  90         BOOST_FOREACH(const Dependency::Ptr& dep, GetDependencies()) {
  91                 if (!dep->IsAvailable(dt)) {
  92                         if (failedDependency)
  93                                 *failedDependency = dep;
  94
  95                         return false;
  96                 }
  97         }
  98
  99         if (failedDependency)
 100                 *failedDependency = Dependency::Ptr();
 101
 102         return true;
 103 }
 104
 105 std::set<Checkable::Ptr> Checkable::GetParents(void) const
 106 {
 107         std::set<Checkable::Ptr> parents;
 108
 109         BOOST_FOREACH(const Dependency::Ptr& dep, GetDependencies()) {
 110                 Checkable::Ptr parent = dep->GetParent();
 111
 112                 if (parent && parent.get() != this)
 113                         parents.insert(parent);
 114         }
 115
 116         return parents;
 117 }
 118
 119 std::set<Checkable::Ptr> Checkable::GetChildren(void) const
 120 {
 121         std::set<Checkable::Ptr> parents;
 122
 123         BOOST_FOREACH(const Dependency::Ptr& dep, GetReverseDependencies()) {
 124                 Checkable::Ptr service = dep->GetChild();
 125
 126                 if (service && service.get() != this)
 127                         parents.insert(service);
 128         }
 129
 130         return parents;
 131 }