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events

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This commit is contained in:
Joel Thomas
2026-06-16 00:32:18 +05:30
parent 329fc6e23f
commit e054076175
10 changed files with 326 additions and 20 deletions
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Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem.vcxproj
+4 -2
View File
@@ -102,7 +102,7 @@
<SDLCheck>true</SDLCheck>
<PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<ConformanceMode>true</ConformanceMode>
<AdditionalIncludeDirectories>$(ProjectDir)models;$(ProjectDir)controllers;$(ProjectDir)factories;$(ProjectDir)views;$(ProjectDir)services;$(ProjectDir)utilities;$(ProjectDir)core\patterns;$(ProjectDir)datastores;$(ProjectDir)core\sharedmemory;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(ProjectDir)models;$(ProjectDir)controllers;$(ProjectDir)factories;$(ProjectDir)views;$(ProjectDir)services;$(ProjectDir)utilities;$(ProjectDir)core\patterns;$(ProjectDir)datastores;$(ProjectDir)core\sharedmemory;$(ProjectDir)core\events;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
@@ -117,7 +117,7 @@
<SDLCheck>true</SDLCheck>
<PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<ConformanceMode>true</ConformanceMode>
<AdditionalIncludeDirectories>$(ProjectDir)models;$(ProjectDir)controllers;$(ProjectDir)factories;$(ProjectDir)views;$(ProjectDir)services;$(ProjectDir)utilities;$(ProjectDir)core\patterns;$(ProjectDir)datastores;$(ProjectDir)core\sharedmemory;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(ProjectDir)models;$(ProjectDir)controllers;$(ProjectDir)factories;$(ProjectDir)views;$(ProjectDir)services;$(ProjectDir)utilities;$(ProjectDir)core\patterns;$(ProjectDir)datastores;$(ProjectDir)core\sharedmemory;$(ProjectDir)core\events;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
@@ -126,6 +126,7 @@
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="controllers\Controller.cpp" />
<ClCompile Include="core\events\EventManager.cpp" />
<ClCompile Include="core\patterns\Observer.cpp" />
<ClCompile Include="core\patterns\Subject.cpp" />
<ClCompile Include="core\sharedmemory\SharedMemory.cpp" />
@@ -153,6 +154,7 @@
</ItemGroup>
<ItemGroup>
<ClInclude Include="controllers\Controller.h" />
<ClInclude Include="core\events\EventManager.h" />
<ClInclude Include="core\patterns\Observer.h" />
<ClInclude Include="core\patterns\Subject.h" />
<ClInclude Include="core\sharedmemory\FileHeader.h" />
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem.vcxproj.filters
+12
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@@ -70,6 +70,12 @@
<Filter Include="Source Files\Core\SharedMemory">
<UniqueIdentifier>{0769afb6-f57d-4ae3-a1cf-ceca6e606af0}</UniqueIdentifier>
</Filter>
<Filter Include="Header Files\Core\Events">
<UniqueIdentifier>{85029bdb-6941-41dc-a3a7-9e5841671d8c}</UniqueIdentifier>
</Filter>
<Filter Include="Source Files\Core\Events">
<UniqueIdentifier>{1050aca7-6f2c-4ccb-a446-db9c898c3599}</UniqueIdentifier>
</Filter>
</ItemGroup>
<ItemGroup>
<ClCompile Include="Trenser.VehicleServiceSystem.cpp">
@@ -147,6 +153,9 @@
<ClCompile Include="core\sharedmemory\SharedMemory.cpp">
<Filter>Source Files\Core\SharedMemory</Filter>
</ClCompile>
<ClCompile Include="EventManager.cpp">
<Filter>Source Files\Core\Events</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="utilities\InputHelper.h">
@@ -275,5 +284,8 @@
<ClInclude Include="core\sharedmemory\TrackedRecord.h">
<Filter>Header Files\Core\SharedMemory</Filter>
</ClInclude>
<ClInclude Include="core\events\EventManager.h">
<Filter>Header Files\Core\Events</Filter>
</ClInclude>
</ItemGroup>
</Project>
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/core/events/EventManager.cpp
+225
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@@ -0,0 +1,225 @@
/*
File: EventManager.cpp
Description: Implementation file containing the method definitions of the
EventManager class, including listener management and
interprocess event publishing.
Author: Trenser
Date:15-Jun-2026
*/
#include <iostream>
#include <stdexcept>
#include "EventManager.h"
namespace
{
const std::string USER_DISABLED_EVENT = "userDisabled_";
const std::string NOTIFICATION_AVAILABLE_EVENT = "notificationAvailable_";
}
/*
Function: EventManager
Description: Constructs an EventManager instance with default values.
Parameter: None
Return type: None
*/
EventManager::EventManager()
:
m_userDisabledEvent(NULL),
m_notificationAvailableEvent(NULL),
m_shutdownEvent(NULL),
m_running(false) {}
/*
Function: ~EventManager
Description: Destroys the EventManager and performs final cleanup.
Parameter: None
Return type: None
*/
EventManager::~EventManager()
{
shutdown();
if (m_listenerThread.joinable())
{
m_listenerThread.join();
}
}
/*
Function: initialize
Description: Creates the user-specific events and starts the listener
thread.
Parameter: const std::string& userId - unique identifier of the user
std::function<void()> userDisabledCallback - callback for
user disable events
std::function<void()> notificationCallback - callback for
notification events
Return type: bool - true if initialization succeeds, false otherwise
*/
bool EventManager::initialize(const std::string& userId, std::function<void()> userDisabledCallback, std::function<void()> notificationCallback)
{
if (m_running.load())
{
return false;
}
m_userDisabledCallback = userDisabledCallback;
m_notificationCallback = notificationCallback;
m_userDisabledEvent = CreateEventA(NULL, FALSE, FALSE, (USER_DISABLED_EVENT + userId).c_str());
if (!m_userDisabledEvent)
{
return false;
}
if (GetLastError() == ERROR_ALREADY_EXISTS)
{
CloseHandle(m_userDisabledEvent);
m_userDisabledEvent = NULL;
throw std::runtime_error("Only one session allowed per user.");
}
m_notificationAvailableEvent = CreateEventA(NULL, FALSE, FALSE, (NOTIFICATION_AVAILABLE_EVENT + userId).c_str());
if (!m_notificationAvailableEvent)
{
CloseHandle(m_userDisabledEvent);
m_userDisabledEvent = NULL;
return false;
}
m_shutdownEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
if (!m_shutdownEvent)
{
CloseHandle(m_userDisabledEvent);
CloseHandle(m_notificationAvailableEvent);
m_userDisabledEvent = NULL;
m_notificationAvailableEvent = NULL;
return false;
}
m_running.store(true);
m_listenerThread = std::thread(&EventManager::run, this);
return true;
}
/*
Function: shutdown
Description: Stops the listener thread and releases event resources.
Parameter: None
Return type: None
*/
void EventManager::shutdown()
{
if (!m_running.load())
{
return;
}
m_running.store(false);
if (m_shutdownEvent)
{
SetEvent(m_shutdownEvent);
}
if (m_listenerThread.joinable())
{
if (std::this_thread::get_id() != m_listenerThread.get_id())
{
m_listenerThread.join();
}
}
if (m_userDisabledEvent)
{
CloseHandle(m_userDisabledEvent);
m_userDisabledEvent = NULL;
}
if (m_notificationAvailableEvent)
{
CloseHandle(m_notificationAvailableEvent);
m_notificationAvailableEvent = NULL;
}
if (m_shutdownEvent)
{
CloseHandle(m_shutdownEvent);
m_shutdownEvent = NULL;
}
}
/*
Function: run
Description: Waits for and dispatches user-related events.
Parameter: None
Return type: void
*/
void EventManager::run()
{
HANDLE handles[3];
handles[0] = m_userDisabledEvent;
handles[1] = m_notificationAvailableEvent;
handles[2] = m_shutdownEvent;
while (m_running.load())
{
DWORD result = WaitForMultipleObjects(3, handles, FALSE, INFINITE);
switch (result)
{
case WAIT_OBJECT_0:
try
{
if (m_userDisabledCallback)
{
m_userDisabledCallback();
}
}
catch (const std::exception& exception)
{
std::cout << exception.what() << std::endl;
}
break;
case WAIT_OBJECT_0 + 1:
try
{
if (m_notificationCallback)
{
m_notificationCallback();
}
}
catch (const std::exception& exception)
{
std::cout << exception.what() << std::endl;
}
break;
case WAIT_OBJECT_0 + 2:
return;
default:
break;
}
}
}
/*
Function: sendUserDisabledEvent
Description: Publishes a user disabled event for a specific user.
Parameter: const std::string& userId - target user identifier
Return type: void
*/
void EventManager::sendUserDisabledEvent(const std::string& userId)
{
HANDLE eventHandle = CreateEventA(NULL, FALSE, FALSE, (USER_DISABLED_EVENT + userId).c_str());
if (!eventHandle)
{
return;
}
SetEvent(eventHandle);
CloseHandle(eventHandle);
}
/*
Function: sendNotificationAvailableEvent
Description: Publishes a notification available event for a specific
user.
Parameter: const std::string& userId - target user identifier
Return type: void
*/
void EventManager::sendNotificationAvailableEvent(const std::string& userId)
{
HANDLE eventHandle = CreateEventA(NULL, FALSE, FALSE, (NOTIFICATION_AVAILABLE_EVENT + userId).c_str());
if (!eventHandle)
{
return;
}
SetEvent(eventHandle);
CloseHandle(eventHandle);
}
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/core/events/EventManager.h
+37
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@@ -0,0 +1,37 @@
/*
File: EventManager.h
Description: Header file declaring the EventManager class, which manages
user-specific interprocess events for user disable and
notification availability updates.
Author: Trenser
Date:15-Jun-2026
*/
#pragma once
#include <windows.h>
#include <atomic>
#include <functional>
#include <string>
#include <thread>
class EventManager
{
private:
HANDLE m_userDisabledEvent;
HANDLE m_notificationAvailableEvent;
HANDLE m_shutdownEvent;
std::atomic<bool> m_running;
std::thread m_listenerThread;
std::function<void()> m_userDisabledCallback;
std::function<void()> m_notificationCallback;
void run();
public:
EventManager();
~EventManager();
bool initialize(const std::string& userId, std::function<void()> userDisabledCallback, std::function<void()> notificationCallback);
void shutdown();
static void sendUserDisabledEvent(const std::string& userId);
static void sendNotificationAvailableEvent(const std::string& userId);
};
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.cpp
+13
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@@ -8,12 +8,14 @@ Date:19-May-2026
*/
#include <stdexcept>
#include <iostream>
#include "AuthenticationManagementService.h"
#include "User.h"
#include "Utility.h"
#include "DataStoreLockGuard.h"
User* AuthenticationManagementService::m_authenticatedUser = nullptr;
EventManager AuthenticationManagementService::m_eventManager;
/*
Function: login
@@ -37,6 +39,16 @@ bool AuthenticationManagementService::login(const std::string& username, const s
if (password == user->getPassword())
{
m_authenticatedUser = user;
m_eventManager.initialize(
user->getId(),
[]()
{
std::cout << "USER_DISABLED event received" << std::endl;
},
[]()
{
std::cout << "NOTIFICATION_AVAILABLE event received" << std::endl;
});
return true;
}
return false;
@@ -65,6 +77,7 @@ Return type: void
*/
void AuthenticationManagementService::logout()
{
m_eventManager.shutdown();
m_authenticatedUser = nullptr;
}
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.h
+2
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@@ -9,6 +9,7 @@ Date:19-May-2026
#pragma once
#include <string>
#include "EventManager.h"
#include "DataStore.h"
class User;
@@ -17,6 +18,7 @@ class AuthenticationManagementService
{
private:
static User* m_authenticatedUser;
static EventManager m_eventManager;
DataStore& m_dataStore;
public:
AuthenticationManagementService() : m_dataStore(DataStore::getInstance()) {}
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/InventoryManagementService.cpp
+2
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@@ -19,6 +19,7 @@ Date: 22-May-2026
#include "Utility.h"
#include "Vector.h"
#include "DataStoreLockGuard.h"
#include "EventManager.h"
util::Map<std::string, User*> InventoryManagementService::m_observers{};
@@ -281,5 +282,6 @@ void InventoryManagementService::sendNotification(User* user, const std::string&
auto& trackedNotificationsMap = m_dataStore.getNotifications();
trackedNotificationsMap.insert(notification->getId(), util::createNewRecord(notification));
m_dataStore.saveNotifications();
EventManager::sendNotificationAvailableEvent(user->getId());
}
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/PaymentManagementService.cpp
+2
View File
@@ -22,6 +22,7 @@ Date: 20-May-2026
#include "User.h"
#include "Utility.h"
#include "DataStoreLockGuard.h"
#include "EventManager.h"
util::Map<std::string, User*> PaymentManagementService::m_observers{};
@@ -109,6 +110,7 @@ void PaymentManagementService::sendNotification(User* user, const std::string& t
auto& trackedNotificationsMap = m_dataStore.getNotifications();
trackedNotificationsMap.insert(notification->getId(), util::createNewRecord(notification));
m_dataStore.saveNotifications();
EventManager::sendNotificationAvailableEvent(user->getId());
}
/*
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/ServiceManagementService.cpp
+2
View File
@@ -27,6 +27,7 @@ Date:19-May-2026
#include "DataStoreLockGuard.h"
#include "Utility.h"
#include "DataStoreLockGuard.h"
#include "EventManager.h"
/*
Function: purchaseService
@@ -199,6 +200,7 @@ void ServiceManagementService::sendNotification(User* user, const std::string& t
auto& trackedNotificationsMap = m_dataStore.getNotifications();
trackedNotificationsMap.insert(notification->getId(), util::createNewRecord(notification));
m_dataStore.saveNotifications();
EventManager::sendNotificationAvailableEvent(user->getId());
}
/*
Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/UserManagementService.cpp
+27 -18
View File
@@ -22,6 +22,7 @@ Date:19-May-2026
#include "Utility.h"
#include "TrackedRecord.h"
#include "DataStoreLockGuard.h"
#include "EventManager.h"
/*
Function: ensureAdminExists
@@ -267,30 +268,38 @@ void UserManagementService::removeUser(const std::string& userID)
InventoryManagementService inventoryManagementService;
PaymentManagementService paymentManagementService;
ServiceManagementService serviceManagementService;
DataStoreLockGuard lock(m_dataStore);
auto& trackedUsersMap = m_dataStore.getUsers();
int index = trackedUsersMap.find(userID);
if (index != -1)
std::string removedUserID;
{
User* user = trackedUsersMap.getValueAt(index).data;
if (user != nullptr)
DataStoreLockGuard lock(m_dataStore);
auto& trackedUsersMap = m_dataStore.getUsers();
int index = trackedUsersMap.find(userID);
if (index != -1)
{
if (user->getUserType() == util::UserType::CUSTOMER)
User* user = trackedUsersMap.getValueAt(index).data;
if (user != nullptr)
{
serviceManagementService.cancelCustomerServiceBookings(userID);
if (user->getUserType() == util::UserType::CUSTOMER)
{
serviceManagementService.cancelCustomerServiceBookings(userID);
}
if (user->getUserType() == util::UserType::TECHNICIAN)
{
serviceManagementService.cancelTechnicianJobs(userID);
}
inventoryManagementService.detach(user);
paymentManagementService.detach(user);
serviceManagementService.detach(user);
user->setState(util::State::INACTIVE);
trackedUsersMap.getValueAt(index).state = RecordState::MODIFIED;
removedUserID = user->getId();
m_dataStore.saveUsers();
}
if (user->getUserType() == util::UserType::TECHNICIAN)
{
serviceManagementService.cancelTechnicianJobs(userID);
}
inventoryManagementService.detach(user);
paymentManagementService.detach(user);
serviceManagementService.detach(user);
user->setState(util::State::INACTIVE);
trackedUsersMap.getValueAt(index).state = RecordState::MODIFIED;
m_dataStore.saveUsers();
}
}
if (!removedUserID.empty())
{
EventManager::sendUserDisabledEvent(removedUserID);
}
}
/*