test_on_bmc

# Put the binaries on BMC

### Test test_sdbusplus_emit_object
root@romulus:/tmp# ./test_sdbusplus_emit_object&
[1] 445

### By default, the object has 4 interfaces
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 4 "org.freedesktop.DBus.Introspectable" "org.freedesktop.DBus.ObjectManager" "org.freedesktop.DBus.Peer" "org.freedesktop.DBus.Properties"

root@romulus:/tmp# kill -10 445
root@romulus:/tmp# Signal: 10
### Below is expected, the object now has 2 new interfaces created by our code
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 6 "org.freedesktop.DBus.Introspectable" "org.freedesktop.DBus.ObjectManager" "org.freedesktop.DBus.Peer" "org.freedesktop.DBus.Properties" "xyz.openbmc_project.Software.ActivationBlocksTransition" "xyz.openbmc_project.Software.ActivationProgress"

root@romulus:/tmp# kill -12 445
root@romulus:/tmp# Signal: 12
test_sdbusplus.cpp:26:~ActivationBlocksTransition
test_sdbusplus.cpp:41:~ActivationProgress

### Now this is the problem, after sdbusplus::server::object::object is destructed,
### the object now only has 1 interface!
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 1 "org.freedesktop.DBus.ObjectManager"


### Test test_sdbusplus_emit_interfaces
root@romulus:/tmp# ./test_sdbusplus_emit_interfaces&
[1] 449
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 4 "org.freedesktop.DBus.Introspectable" "org.freedesktop.DBus.ObjectManager" "org.freedesktop.DBus.Peer" "org.freedesktop.DBus.Properties"
root@romulus:/tmp# kill -10 449
root@romulus:/tmp# Signal: 10
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 6 "org.freedesktop.DBus.Introspectable" "org.freedesktop.DBus.ObjectManager" "org.freedesktop.DBus.Peer" "org.freedesktop.DBus.Properties" "xyz.openbmc_project.Software.ActivationBlocksTransition" "xyz.openbmc_project.Software.ActivationProgress"
root@romulus:/tmp# kill -12 449
root@romulus:/tmp# Signal: 12
test_sdbusplus.cpp:27:~ActivationBlocksTransition
test_sdbusplus.cpp:43:~ActivationProgress

### Now this is expected, after sdbusplus::server::object::object is destructed,
### the two interfaces are removed from DBus, the object remains as before.
root@romulus:/tmp#  busctl call xyz.openbmc_project.ObjectMapper /xyz/openbmc_project/object_mapper xyz.openbmc_project.ObjectMapper GetObject sas /xyz/openbmc_project/leiyu 0
a{sas} 1 "xyz.openbmc_project.LeiYu.Test" 4 "org.freedesktop.DBus.Introspectable" "org.freedesktop.DBus.ObjectManager" "org.freedesktop.DBus.Peer" "org.freedesktop.DBus.Properties"

test_sdbusplus_emit_interfaces.cpp

#include <csignal>
#include <cstdio>
#include <sdbusplus/bus.hpp>
#include <xyz/openbmc_project/Software/ActivationBlocksTransition/server.hpp>
#include <xyz/openbmc_project/Software/ActivationProgress/server.hpp>


using ActivationBlocksTransitionInherit = sdbusplus::server::object::object<
    sdbusplus::xyz::openbmc_project::Software::server::
        ActivationBlocksTransition>;

using ActivationProgressInherit = sdbusplus::server::object::object<
    sdbusplus::xyz::openbmc_project::Software::server::ActivationProgress>;

class ActivationBlocksTransition : public ActivationBlocksTransitionInherit
{
  public:
    ActivationBlocksTransition(sdbusplus::bus::bus& bus,
                               const std::string& path) :
        ActivationBlocksTransitionInherit(bus, path.c_str(),
                ActivationBlocksTransition::action::EMIT_INTERFACE_ADDED)
    {
        // Empty
    }
    ~ActivationBlocksTransition()
    {
        printf("%s:%d:%s\n", __FILE__, __LINE__, __func__);
    }
};

class ActivationProgress : public ActivationProgressInherit
{
  public:
    ActivationProgress(sdbusplus::bus::bus& bus,
                       const std::string& path) :
        ActivationProgressInherit(bus, path.c_str(),
                ActivationProgress::action::EMIT_INTERFACE_ADDED)
    {
        // Empty
    }
    ~ActivationProgress()
    {
        printf("%s:%d:%s\n", __FILE__, __LINE__, __func__);
    }
};

sdbusplus::bus::bus& getBus()
{
    static auto bus = sdbusplus::bus::new_default();
    return bus;
}

constexpr auto myService = "xyz.openbmc_project.LeiYu.Test";
constexpr auto objPath = "/xyz/openbmc_project/leiyu";

std::unique_ptr<ActivationBlocksTransitionInherit> block;
std::unique_ptr<ActivationProgressInherit> progress;

void signal_handler( int signal_num ) {
   printf("Signal: %d\n", signal_num);
   if (signal_num == SIGUSR1)
   {
       block = std::make_unique<ActivationBlocksTransition>(getBus(), objPath);
       progress = std::make_unique<ActivationProgress>(getBus(), objPath);
   }
   else if(signal_num == SIGUSR2)
   {
       block.reset();
       progress.reset();
   }
}

int main(int, char**) {
    signal(SIGUSR1, signal_handler);
    signal(SIGUSR2, signal_handler);

    auto& bus = getBus();
    sdbusplus::server::manager::manager objManager(bus, objPath);

    bus.request_name(myService);
    while(true)
    {
        bus.process_discard();
        bus.wait();
    }
    return 0;
}

test_sdbusplus_emit_object.cpp

#include <csignal>
#include <cstdio>
#include <sdbusplus/bus.hpp>
#include <xyz/openbmc_project/Software/ActivationBlocksTransition/server.hpp>
#include <xyz/openbmc_project/Software/ActivationProgress/server.hpp>


using ActivationBlocksTransitionInherit = sdbusplus::server::object::object<
    sdbusplus::xyz::openbmc_project::Software::server::
        ActivationBlocksTransition>;

using ActivationProgressInherit = sdbusplus::server::object::object<
    sdbusplus::xyz::openbmc_project::Software::server::ActivationProgress>;

class ActivationBlocksTransition : public ActivationBlocksTransitionInherit
{
  public:
    ActivationBlocksTransition(sdbusplus::bus::bus& bus,
                               const std::string& path) :
        ActivationBlocksTransitionInherit(bus, path.c_str())
    {
        // Empty
    }
    ~ActivationBlocksTransition()
    {
        printf("%s:%d:%s\n", __FILE__, __LINE__, __func__);
    }
};

class ActivationProgress : public ActivationProgressInherit
{
  public:
    ActivationProgress(sdbusplus::bus::bus& bus,
                       const std::string& path) :
        ActivationProgressInherit(bus, path.c_str())
    {
        // Empty
    }
    ~ActivationProgress()
    {
        printf("%s:%d:%s\n", __FILE__, __LINE__, __func__);
    }
};

sdbusplus::bus::bus& getBus()
{
    static auto bus = sdbusplus::bus::new_default();
    return bus;
}

constexpr auto myService = "xyz.openbmc_project.LeiYu.Test";
constexpr auto objPath = "/xyz/openbmc_project/leiyu";

std::unique_ptr<ActivationBlocksTransitionInherit> block;
std::unique_ptr<ActivationProgressInherit> progress;

void signal_handler( int signal_num ) {
   printf("Signal: %d\n", signal_num);
   if (signal_num == SIGUSR1)
   {
       block = std::make_unique<ActivationBlocksTransition>(getBus(), objPath);
       progress = std::make_unique<ActivationProgress>(getBus(), objPath);
   }
   else if(signal_num == SIGUSR2)
   {
       block.reset();
       progress.reset();
   }
}

int main(int, char**) {
    signal(SIGUSR1, signal_handler);
    signal(SIGUSR2, signal_handler);

    auto& bus = getBus();
    sdbusplus::server::manager::manager objManager(bus, objPath);

    bus.request_name(myService);
    while(true)
    {
        bus.process_discard();
        bus.wait();
    }
    return 0;
}