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/**
* Example of a D-Bus client which implements org.freedesktop.DBus.ObjectManager
*
* The example uses the generated stub API layer to listen to interfaces added to new objects under
* "org.sdbuscpp.examplemanager". If added, we access "org.sdbuscpp.ExampleManager.Planet1" to print
* info like this:
* /org/sdbuscpp/examplemanager/Planet1/Earth added: org.sdbuscpp.ExampleManager.Planet1
* Earth has a population of 7874965825.
*
*/
#include "examplemanager-planet1-client-glue.h"
#include <sdbus-c++/sdbus-c++.h>
#include <iostream>
#include <thread>
class PlanetProxy final : public sdbus::ProxyInterfaces< org::sdbuscpp::ExampleManager::Planet1_proxy >
{
public:
PlanetProxy(sdbus::IConnection& connection, std::string destination, std::string path)
: ProxyInterfaces(connection, std::move(destination), std::move(path))
{
registerProxy();
}
~PlanetProxy()
{
unregisterProxy();
}
};
class ManagerProxy final : public sdbus::ProxyInterfaces< sdbus::ObjectManager_proxy >
{
public:
ManagerProxy(sdbus::IConnection& connection, const std::string& destination, std::string path)
: ProxyInterfaces(connection, destination, std::move(path))
, m_connection(connection)
, m_destination(destination)
{
registerProxy();
}
~ManagerProxy()
{
unregisterProxy();
}
void handleExistingObjects()
{
std::map<sdbus::ObjectPath, std::map<std::string, std::map<std::string, sdbus::Variant>>> objectsInterfacesAndProperties;
objectsInterfacesAndProperties = GetManagedObjects();
for (const auto& [object, interfacesAndProperties] : objectsInterfacesAndProperties) {
onInterfacesAdded(object, interfacesAndProperties);
}
}
private:
void onInterfacesAdded( const sdbus::ObjectPath& objectPath
, const std::map<std::string, std::map<std::string, sdbus::Variant>>& interfacesAndProperties) override
{
std::cout << objectPath << " added:\t";
for (const auto& [interface, _] : interfacesAndProperties) {
std::cout << interface << " ";
}
std::cout << std::endl;
// Parse and print some more info
auto planetInterface = interfacesAndProperties.find(org::sdbuscpp::ExampleManager::Planet1_proxy::INTERFACE_NAME);
if (planetInterface == interfacesAndProperties.end()) {
return;
}
const auto& properties = planetInterface->second;
// get a property which was passed as part of the signal.
const auto& name = properties.at("Name").get<std::string>();
// or create a proxy instance to the newly added object.
PlanetProxy planet(m_connection, m_destination, objectPath);
std::cout << name << " has a population of " << planet.GetPopulation() << ".\n" << std::endl;
}
void onInterfacesRemoved( const sdbus::ObjectPath& objectPath
, const std::vector<std::string>& interfaces) override
{
std::cout << objectPath << " removed:\t";
for (const auto& interface : interfaces) {
std::cout << interface << " ";
}
std::cout << std::endl;
}
sdbus::IConnection& m_connection;
std::string m_destination;
};
int main()
{
auto connection = sdbus::createSessionBusConnection();
auto managerProxy = std::make_unique<ManagerProxy>(*connection, "org.sdbuscpp.examplemanager", "/org/sdbuscpp/examplemanager");
try {
managerProxy->handleExistingObjects();
}
catch (const sdbus::Error& e) {
if (e.getName() == "org.freedesktop.DBus.Error.ServiceUnknown") {
std::cout << "Waiting for server to start ..." << std::endl;
}
}
connection->enterEventLoop();
return 0;
}
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