icinga2/lib/base/dependencygraph.cpp
Yonas Habteab 29a5268961 Replace all existing copyright headers with SPDX headers
I've used the following command to replace the original copyright header
lines in a C-style comment block:

```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f -exec perl -pi -e 's{/\*[^*]*\(\s*c\s*\)\s*(\d{4})\s*Icinga\s+GmbH[^*]*\*/}{// SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n// SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```

For files that use shell-style comments (#) like CMakeLists.txt, I've
used this command:

```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f -exec perl -pi -e 's{#.*\(\s*c\s*\)\s(\d{4})\sIcinga\s+GmbH.*}{# SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n# SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```

And for SQL files:

```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f \( -name '*.sql' \) -exec perl -pi -e 's{--.*\(c\)\s(\d{4})\sIcinga\sGmbH.*}{-- SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n-- SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f \( -name '*.sql' \) -exec perl -pi -e 's{-- Copyright \(c\)\s(\d{4})\sIcinga\s+Development\sTeam.*}{-- SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n-- SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```
2026-02-03 17:54:50 +01:00

73 lines
2.1 KiB
C++

// SPDX-FileCopyrightText: 2012 Icinga GmbH <https://icinga.com>
// SPDX-License-Identifier: GPL-2.0-or-later
#include "base/dependencygraph.hpp"
using namespace icinga;
std::mutex DependencyGraph::m_Mutex;
DependencyGraph::DependencyMap DependencyGraph::m_Dependencies;
void DependencyGraph::AddDependency(ConfigObject* child, ConfigObject* parent)
{
std::unique_lock<std::mutex> lock(m_Mutex);
if (auto [it, inserted] = m_Dependencies.insert(Edge(parent, child)); !inserted) {
m_Dependencies.modify(it, [](Edge& e) { e.count++; });
}
}
void DependencyGraph::RemoveDependency(ConfigObject* child, ConfigObject* parent)
{
std::unique_lock<std::mutex> lock(m_Mutex);
if (auto it(m_Dependencies.find(Edge(parent, child))); it != m_Dependencies.end()) {
if (it->count > 1) {
// Remove a duplicate edge from child to node, i.e. decrement the corresponding counter.
m_Dependencies.modify(it, [](Edge& e) { e.count--; });
} else {
// Remove the last edge from child to node (decrementing the counter would set it to 0),
// thus remove that connection from the data structure completely.
m_Dependencies.erase(it);
}
}
}
/**
* Returns all the parent objects of the given child object.
*
* @param child The child object.
*
* @returns A list of the parent objects.
*/
std::vector<ConfigObject::Ptr> DependencyGraph::GetParents(const ConfigObject::Ptr& child)
{
std::vector<ConfigObject::Ptr> objects;
std::unique_lock lock(m_Mutex);
auto [begin, end] = m_Dependencies.get<2>().equal_range(child.get());
std::transform(begin, end, std::back_inserter(objects), [](const Edge& edge) {
return edge.parent;
});
return objects;
}
/**
* Returns all the dependent objects of the given parent object.
*
* @param parent The parent object.
*
* @returns A list of the dependent objects.
*/
std::vector<ConfigObject::Ptr> DependencyGraph::GetChildren(const ConfigObject::Ptr& parent)
{
std::vector<ConfigObject::Ptr> objects;
std::unique_lock lock(m_Mutex);
auto [begin, end] = m_Dependencies.get<1>().equal_range(parent.get());
std::transform(begin, end, std::back_inserter(objects), [](const Edge& edge) {
return edge.child;
});
return objects;
}