Implement *_plugin_get_last_exception in all plugins

Plugins no longer discard the exception generated in
the `libdnf_plugin_new_instance` and `dnf5_plugin_new_instance`
functions. The exception is saved.

Plugins implement the `libdnf_plugin_get_last_exception` or
`dnf5_plugin_get_last_exception` function to retrieve the saved
exception.

dnf5-plugins/automatic_plugin/automatic_cmd_plugin.cpp

@@ -49,6 +49,8 @@ std::vector<std::unique_ptr<Command>> AutomaticCmdPlugin::create_commands() {
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -67,9 +69,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new AutomaticCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/builddep_plugin/builddep_cmd_plugin.cpp

@@ -49,6 +49,8 @@ std::vector<std::unique_ptr<Command>> BuildDepCmdPlugin::create_commands() {
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -67,9 +69,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new BuildDepCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/changelog_plugin/changelog_cmd_plugin.cpp

@@ -49,6 +49,8 @@ std::vector<std::unique_ptr<Command>> ChangelogCmdPlugin::create_commands() {
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -67,9 +69,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new ChangelogCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/config-manager_plugin/config-manager_cmd_plugin.cpp

@@ -49,6 +49,8 @@ std::vector<std::unique_ptr<Command>> ConfigManagerCmdPlugin::create_commands()
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -67,9 +69,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new ConfigManagerCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/copr_plugin/copr_cmd_plugin.cpp

@@ -69,6 +69,8 @@ class CoprCmdPlugin : public IPlugin {
 };
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -87,9 +89,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new CoprCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/needs_restarting_plugin/needs_restarting_cmd_plugin.cpp

@@ -49,6 +49,8 @@ std::vector<std::unique_ptr<Command>> NeedsRestartingCmdPlugin::create_commands(
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -67,9 +69,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new NeedsRestartingCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/repoclosure_plugin/repoclosure_cmd_plugin.cpp

@@ -68,6 +68,8 @@ std::vector<std::unique_ptr<Command>> RepoclosureCmdPlugin::create_commands() {
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -86,9 +88,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new RepoclosureCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

dnf5-plugins/reposync_plugin/reposync_cmd_plugin.cpp

@@ -68,6 +68,8 @@ std::vector<std::unique_ptr<Command>> ReposyncCmdPlugin::create_commands() {
 }
 
 
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -86,9 +88,14 @@ PluginVersion dnf5_plugin_get_version(void) {
 IPlugin * dnf5_plugin_new_instance([[maybe_unused]] ApplicationVersion application_version, Context & context) try {
     return new ReposyncCmdPlugin(context);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void dnf5_plugin_delete_instance(IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * dnf5_plugin_get_last_exception(void) {
+    return &last_exception;
+}

libdnf5-plugins/actions/actions.cpp

@@ -1983,6 +1983,9 @@ void Actions::on_transaction(const libdnf5::base::Transaction & transaction, con
     }
 }
 
+
+std::exception_ptr last_exception;
+
 }  // namespace
 
 PluginAPIVersion libdnf_plugin_get_api_version(void) {
@@ -2003,9 +2006,14 @@ plugin::IPlugin * libdnf_plugin_new_instance(
     libdnf5::ConfigParser & parser) try {
     return new Actions(data, parser);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * libdnf_plugin_get_last_exception(void) {
+    return &last_exception;
+}

libdnf5-plugins/appstream/appstream.cpp

@@ -100,6 +100,9 @@ void AppstreamPlugin::install_appstream(libdnf5::repo::Repo * repo) {
     }
 }
 
+
+std::exception_ptr last_exception;
+
 }  // namespace
 
 
@@ -121,9 +124,14 @@ plugin::IPlugin * libdnf_plugin_new_instance(
     libdnf5::ConfigParser & parser) try {
     return new AppstreamPlugin(data, parser);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * libdnf_plugin_get_last_exception(void) {
+    return &last_exception;
+}

libdnf5-plugins/expired-pgp-keys/expired-pgp-keys.cpp

@@ -223,6 +223,9 @@ void ExpiredPgpKeys::process_expired_pgp_keys(const libdnf5::base::Transaction &
     }
 }
 
+
+std::exception_ptr last_exception;
+
 }  // namespace
 
 PluginAPIVersion libdnf_plugin_get_api_version(void) {
@@ -243,9 +246,14 @@ plugin::IPlugin * libdnf_plugin_new_instance(
     libdnf5::ConfigParser & parser) try {
     return new ExpiredPgpKeys(data, parser);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * libdnf_plugin_get_last_exception(void) {
+    return &last_exception;
+}

libdnf5-plugins/python_plugins_loader/python_plugins_loader.cpp

@@ -175,8 +175,6 @@ static void fetch_python_error_to_exception(const char * msg) {
     throw std::runtime_error(msg + pycomp_str.get_string());
 }
 
-}  // namespace
-
 /// Load Python plugin from path
 void PythonPluginLoader::load_plugin_file(const fs::path & file_path) {
     // Very High Level Embedding
@@ -316,6 +314,11 @@ void PythonPluginLoader::load_plugins() {
 }
 
 
+std::exception_ptr last_exception;
+
+}  // namespace
+
+
 PluginAPIVersion libdnf_plugin_get_api_version(void) {
     return REQUIRED_PLUGIN_API_VERSION;
 }
@@ -334,9 +337,14 @@ plugin::IPlugin * libdnf_plugin_new_instance(
     libdnf5::ConfigParser & parser) try {
     return new PythonPluginLoader(data, parser);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * libdnf_plugin_get_last_exception(void) {
+    return &last_exception;
+}

libdnf5-plugins/rhsm/rhsm.cpp

@@ -140,6 +140,9 @@ void Rhsm::setup_enrollments() {
     }
 }
 
+
+std::exception_ptr last_exception;
+
 }  // namespace
 
 PluginAPIVersion libdnf_plugin_get_api_version(void) {
@@ -160,9 +163,14 @@ plugin::IPlugin * libdnf_plugin_new_instance(
     libdnf5::ConfigParser & parser) try {
     return new Rhsm(data, parser);
 } catch (...) {
+    last_exception = std::current_exception();
     return nullptr;
 }
 
 void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
     delete plugin_object;
 }
+
+std::exception_ptr * libdnf_plugin_get_last_exception(void) {
+    return &last_exception;
+}