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#include <dlfcn.h>
#include "application_manager/plugin_manager/rpc_plugin_manager_impl.h"
#include "utils/file_system.h"
namespace application_manager {
namespace plugin_manager {
CREATE_LOGGERPTR_GLOBAL(logger_, "PluginManager")
RPCPluginManagerImpl::RPCPluginManagerImpl(
ApplicationManager& app_manager,
rpc_service::RPCService& rpc_service,
HMICapabilities& hmi_capabilities,
policy::PolicyHandlerInterface& policy_handler,
resumption::LastState& last_state)
: app_manager_(app_manager)
, rpc_service_(rpc_service)
, hmi_capabilities_(hmi_capabilities)
, policy_handler_(policy_handler)
, last_state_(last_state) {}
bool IsLibraryFile(const std::string& file_path) {
size_t pos = file_path.find_last_of(".");
if (std::string::npos == pos) {
return false;
}
if (file_path.substr(pos + 1).compare("so") != 0) {
return false;
}
return true;
}
template <typename T>
T GetFuncFromLib(void* dl_handle, const std::string& function_name) {
T exported_func =
reinterpret_cast<T>(dlsym(dl_handle, function_name.c_str()));
char* error_string = dlerror();
if (nullptr != error_string) {
LOG4CXX_ERROR(logger_, "Failed to export symbols : " << error_string);
return nullptr;
}
return exported_func;
}
RPCPluginManagerImpl::RPCPluginPtr RPCPluginManagerImpl::LoadPlugin(
const std::string& full_plugin_path) const {
if (!IsLibraryFile(full_plugin_path)) {
LOG4CXX_DEBUG(logger_, "Skip loading " << full_plugin_path);
return RPCPluginPtr(nullptr, [](RPCPlugin*) {});
}
void* plugin_dll = dlopen(full_plugin_path.c_str(), RTLD_LAZY);
if (nullptr == plugin_dll) {
LOG4CXX_ERROR(
logger_,
"Failed to open dll " << full_plugin_path << " : " << dlerror());
return RPCPluginPtr(nullptr, [](RPCPlugin*) {});
}
typedef RPCPlugin* (*Create)();
Create create_plugin = GetFuncFromLib<Create>(plugin_dll, "Create");
if (!create_plugin) {
LOG4CXX_ERROR(logger_, "No Create function in " << full_plugin_path);
dlclose(plugin_dll);
return RPCPluginPtr(nullptr, [](RPCPlugin*) {});
}
typedef void (*Delete)(RPCPlugin*);
Delete delete_plugin = GetFuncFromLib<Delete>(plugin_dll, "Delete");
if (!delete_plugin) {
LOG4CXX_ERROR(logger_, "No Delete function in " << full_plugin_path);
dlclose(plugin_dll);
return RPCPluginPtr(nullptr, [](RPCPlugin*) {});
}
auto plugin_destroyer = [delete_plugin, plugin_dll](RPCPlugin* plugin) {
LOG4CXX_DEBUG(logger_, "Delete plugin " << plugin->PluginName());
delete_plugin(plugin);
dlclose(plugin_dll);
return RPCPluginPtr(nullptr, [](RPCPlugin*) {});
};
RPCPlugin* plugin = create_plugin();
return RPCPluginPtr(plugin, plugin_destroyer);
}
uint32_t RPCPluginManagerImpl::LoadPlugins(const std::string& plugins_path) {
LOG4CXX_INFO(logger_, "Loading plugins from " << plugins_path);
std::vector<std::string> plugin_files = file_system::ListFiles(plugins_path);
for (auto& plugin_file : plugin_files) {
std::string full_name = plugins_path + '/' + plugin_file;
auto plugin = LoadPlugin(full_name);
if (!plugin) {
continue;
}
LOG4CXX_DEBUG(
logger_,
"Loaded " << plugin->PluginName() << " plugin from " << full_name);
if (plugin->Init(app_manager_,
rpc_service_,
hmi_capabilities_,
policy_handler_,
last_state_)) {
loaded_plugins_.push_back(std::move(plugin));
} else {
LOG4CXX_ERROR(logger_,
"Initialisation of " << plugin->PluginName()
<< " plugin from " << full_name
<< " failed");
}
}
return loaded_plugins_.size();
}
utils::Optional<RPCPlugin> RPCPluginManagerImpl::FindPluginToProcess(
const int32_t function_id,
const commands::Command::CommandSource message_source) {
typedef utils::Optional<RPCPlugin> PluginOptional;
for (auto& plugin : loaded_plugins_) {
if (plugin->IsAbleToProcess(function_id, message_source)) {
return PluginOptional(*plugin);
}
}
return PluginOptional(PluginOptional::EMPTY,
std::string("Plugin for processing RPC not found"));
}
void RPCPluginManagerImpl::ForEachPlugin(
std::function<void(RPCPlugin&)> functor) {
for (auto& plugin : loaded_plugins_) {
functor(*plugin);
}
}
} // namespace plugin_manager
} // namespace application_manager
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