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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/)  *
   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  *                                                                            *
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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
  24 using namespace icinga;
  25
  26 void Checkable::AddDependency(const Dependency::Ptr& dep)
  27 {
  28         boost::mutex::scoped_lock lock(m_DependencyMutex);
  29         m_Dependencies.insert(dep);
  30 }
  31
  32 void Checkable::RemoveDependency(const Dependency::Ptr& dep)
  33 {
  34         boost::mutex::scoped_lock lock(m_DependencyMutex);
  35         m_Dependencies.erase(dep);
  36 }
  37
  38 std::vector<Dependency::Ptr> Checkable::GetDependencies(void) const
  39 {
  40         boost::mutex::scoped_lock lock(m_DependencyMutex);
  41         return std::vector<Dependency::Ptr>(m_Dependencies.begin(), m_Dependencies.end());
  42 }
  43
  44 void Checkable::AddReverseDependency(const Dependency::Ptr& dep)
  45 {
  46         boost::mutex::scoped_lock lock(m_DependencyMutex);
  47         m_ReverseDependencies.insert(dep);
  48 }
  49
  50 void Checkable::RemoveReverseDependency(const Dependency::Ptr& dep)
  51 {
  52         boost::mutex::scoped_lock lock(m_DependencyMutex);
  53         m_ReverseDependencies.erase(dep);
  54 }
  55
  56 std::vector<Dependency::Ptr> Checkable::GetReverseDependencies(void) const
  57 {
  58         boost::mutex::scoped_lock lock(m_DependencyMutex);
  59         return std::vector<Dependency::Ptr>(m_ReverseDependencies.begin(), m_ReverseDependencies.end());
  60 }
  61
  62 bool Checkable::IsReachable(DependencyType dt, Dependency::Ptr *failedDependency, int rstack) const
  63 {
  64         if (rstack > 20) {
  65                 Log(LogWarning, "Checkable")
  66                         << "Too many nested dependencies for service '" << GetName() << "': Dependency failed.";
  67
  68                 return false;
  69         }
  70
  71         for (const Checkable::Ptr& checkable : GetParents()) {
  72                 if (!checkable->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 = nullptr;
  84
  85                         return false;
  86                 }
  87         }
  88
  89         for (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 = nullptr;
 100
 101         return true;
 102 }
 103
 104 std::set<Checkable::Ptr> Checkable::GetParents(void) const
 105 {
 106         std::set<Checkable::Ptr> parents;
 107
 108         for (const Dependency::Ptr& dep : GetDependencies()) {
 109                 Checkable::Ptr parent = dep->GetParent();
 110
 111                 if (parent && parent.get() != this)
 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         for (const Dependency::Ptr& dep : GetReverseDependencies()) {
 123                 Checkable::Ptr service = dep->GetChild();
 124
 125                 if (service && service.get() != this)
 126                         parents.insert(service);
 127         }
 128
 129         return parents;
 130 }
 131
 132 std::set<Checkable::Ptr> Checkable::GetAllChildren(void) const
 133 {
 134         std::set<Checkable::Ptr> children = GetChildren();
 135
 136         GetAllChildrenInternal(children, 0);
 137
 138         return children;
 139 }
 140
 141 void Checkable::GetAllChildrenInternal(std::set<Checkable::Ptr>& children, int level) const
 142 {
 143         if (level > 32)
 144                 return;
 145
 146         std::set<Checkable::Ptr> localChildren;
 147
 148         for (const Checkable::Ptr& checkable : children) {
 149                 std::set<Checkable::Ptr> cChildren = checkable->GetChildren();
 150
 151                 if (!cChildren.empty()) {
 152                         GetAllChildrenInternal(cChildren, level + 1);
 153                         localChildren.insert(cChildren.begin(), cChildren.end());
 154                 }
 155
 156                 localChildren.insert(checkable);
 157         }
 158
 159         children.insert(localChildren.begin(), localChildren.end());
 160 }