Files
BloomPatched/src/Application.hpp
2021-04-06 23:20:50 +01:00

268 lines
8.9 KiB
C++

#pragma once
#include <memory>
#include <map>
#include <string>
#include <functional>
#include <QtCore/QtCore>
#include <thread>
#include "src/SignalHandler/SignalHandler.hpp"
#include "src/TargetController/TargetController.hpp"
#include "src/DebugServers/GdbRsp/AvrGdbRsp/AvrGdbRsp.hpp"
#include "src/Insight/Insight.hpp"
#include "src/Helpers/Thread.hpp"
#include "src/Logger/Logger.hpp"
#include "src/ApplicationConfig.hpp"
#include "src/Exceptions/Exception.hpp"
#include "src/EventManager/EventListener.hpp"
#include "src/EventManager/Events/Events.hpp"
namespace Bloom
{
using namespace DebugServers;
/**
* Bloom - a debug interface for embedded systems development on Linux.
*
* This is the main entry-point of execution for the Bloom program. The methods within will run on the main
* thread. If Insight is enabled, execution will be passed over to Insight::run() upon startup.
*/
class Application: public Thread
{
public:
static const inline std::string VERSION_STR = "0.0.1";
private:
/**
* This is the application wide event manager. It should be the only instance of the EventManager class at
* any given time.
*
* It should be injected (by reference) into any other instances of classes that require use
* of the EventManager.
*/
EventManager eventManager = EventManager();
EventListenerPointer applicationEventListener = std::make_shared<EventListener>("ApplicationEventListener");
/**
* The SignalHandler deals with any UNIX signals. It runs on a dedicated thread. All other threads
* ignore UNIX signals.
*
* See the SignalHandler class for more on this.
*/
SignalHandler signalHandler = SignalHandler(this->eventManager);
std::thread signalHandlerThread;
/**
* The TargetController possesses full control of the connect debug tool and target. It runs on a
* dedicated thread.
*
* See the TargetController class for more on this.
*/
TargetController targetController = TargetController(this->eventManager);
std::thread targetControllerThread;
/**
* The DebugServer exposes an interface to the connected target, to third-party software such as IDEs. It runs
* on a dedicated thread.
*
* See the DebugServer and GdbRspDebugServer class for more on this.
*/
std::unique_ptr<DebugServer> debugServer = nullptr;
std::thread debugServerThread;
/**
* Insight is, effectively, a small Qt application that serves a GUI to the user. It occupies the main thread,
* as well as a single worker thread, and possibly other threads created by Qt.
*
* When the user closes the Insight GUI, control of the main thread is returned to Application::run(). How we
* deal with the GUI being closed at this point depends on user configuration.
*
* See the Insight class for more on this.
*/
Insight insight = Insight(this->eventManager);
/**
* Configuration extracted from the user's project configuration file.
*
* See ApplicationConfig.hpp for more on this.
*/
ApplicationConfig applicationConfig;
EnvironmentConfig environmentConfig;
DebugServerConfig debugServerConfig;
InsightConfig insightConfig;
std::optional<std::string> selectedEnvironmentName;
/**
* Some CLI arguments are interpreted as commands and thus require specific handler methods to be called.
* This mapping maps command strings to the appropriate handler methods. The mapped handler method is invoked
* when the command is provided as an argument from the CLI.
*
* See Application::run() for more on this.
*
* @return
*/
auto getCommandToHandlerMapping() {
return std::map<std::string, std::function<int()>> {
{
"--help",
std::bind(&Application::presentHelpText, this)
},
{
"-h",
std::bind(&Application::presentHelpText, this)
},
{
"--version",
std::bind(&Application::presentVersionText, this)
},
{
"-v",
std::bind(&Application::presentVersionText, this)
},
{
"init",
std::bind(&Application::initProject, this)
},
};
}
/**
* Extracts config from the user's JSON config file and generates an ApplicationConfig object.
*
* @see ApplicationConfig declaration for more on this.
* @return
*/
static ApplicationConfig extractConfig();
/**
* Presents application help text to user.
*
* @return
*/
int presentHelpText();
/**
* Presents the current Bloom version number to user.
*
* @return
*/
int presentVersionText();
/**
* Initialises a project in the user's working directory.
*
* @return
*/
int initProject();
/**
* Kicks off the application.
*
* Will start the TargetController and DebugServer. And register the main application's event handlers.
*/
void startup();
/**
* Will cleanly shutdown the application. This should never fail.
*/
void shutdown();
/**
* Prepares a dedicated thread for the TargetController and kicks it off.
*/
void startTargetController();
/**
* Invokes a clean shutdown of the TargetController. The TargetController should disconnect from the target
* and debug tool in a clean and safe manner, ensuring that both are left in a sensible state.
*
* This will join the TargetController thread.
*/
void stopTargetController();
/**
* Prepares a dedicated thread for the DebugServer and kicks it off with a call to DebugServer::run().
*/
void startDebugServer();
/**
* Sends a shutdown request to the DebugServer thread and waits on it to exit.
*/
void stopDebugServer();
public:
explicit Application() = default;
/**
* This mapping is used to map debug server names from project configuration files to polymorphic instances of
* the DebugServer class.
*
* See Application::startDebugServer() for more on this.
*
* @return
*/
auto getSupportedDebugServers() {
return std::map<std::string, std::function<std::unique_ptr<DebugServer>()>> {
{
"avr-gdb-rsp",
[this]() -> std::unique_ptr<DebugServer> {
return std::make_unique<DebugServers::Gdb::AvrGdbRsp>(this->eventManager);
}
},
};
};
/**
* Main entry-point for the Bloom program.
*
* @param arguments
* A vector of string arguments passed from the user via the cli.
*
* @return
*/
int run(const std::vector<std::string>& arguments);
/**
* If the TargetController unexpectedly shuts down, the rest of the application will follow.
*
* @param event
*/
void handleTargetControllerStateChangedEvent(EventPointer<Events::TargetControllerStateChanged> event);
/**
* Same goes for the DebugServer - it should never shutdown unless a shutdown request was issued. If it does,
* something horrible has happened and so we shutdown the rest of the application in response.
*
* @param event
*/
void onDebugServerStateChanged(EventPointer<Events::DebugServerStateChanged> event);
/**
* Triggers a shutdown of Bloom and all of its components.
*/
void handleShutdownApplicationEvent(EventPointer<Events::ShutdownApplication>);
/**
* Returns the path to the directory in which the Bloom binary resides.
*
* @return
*/
static std::string getApplicationDirPath();
/**
* Returns the path to the Resources directory, located in the application directory.
*
* @return
*/
static std::string getResourcesDirPath();
/**
* Checks if the current effective user running Bloom has root privileges.
*
* @return
*/
static bool isRunningAsRoot();
};
}