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Improve and fix events

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This commit is contained in:
JeremyStar™ 2024-06-09 22:14:45 +02:00
parent 5a98722520
commit 3256224329
Signed by: JeremyStarTM
GPG key ID: E366BAEF67E4704D
9 changed files with 150 additions and 141 deletions
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11
base/src/main/java/de/staropensource/sosengine/base/Engine.java
View file

@ -91,9 +91,6 @@ public final class Engine {
// Initialize classes
initializeClasses();
// Initialize events
initializeEvents();
// Populate crash content
populateCrashContent();
@ -119,14 +116,6 @@ public final class Engine {
new ShortcodeConverter();
}
/**
* Initializes all events.
*
* @since 1-alpha0
*/
private void initializeEvents() {
}
/**
* This method populates the Crash Handler's content with the default set of content.
*

14
base/src/main/java/de/staropensource/sosengine/base/annotations/EventListener.java
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@ -20,15 +20,29 @@
package de.staropensource.sosengine.base.annotations;
import de.staropensource.sosengine.base.classes.Event;
import de.staropensource.sosengine.base.classes.EventPriority;
import java.lang.annotation.*;
/**
* Annotation for registering events on methods.
*/
@SuppressWarnings("unused")
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@Documented
public @interface EventListener {
/**
* The event to listen for.
*
* @return the event the method listens for
*/
Class<? extends Event> event();
/**
* The priority of the event.
*
* @return the event priority
*/
EventPriority priority();
}

125
base/src/main/java/de/staropensource/sosengine/base/classes/Event.java
View file

@ -1,131 +1,14 @@
/*
STAROPENSOURCE ENGINE SOURCE FILE
Copyright (c) 2024 The StarOpenSource Engine Contributors
Licensed under the GNU Affero General Public License v3
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package de.staropensource.sosengine.base.classes;
import de.staropensource.sosengine.base.annotations.EventListener;
import de.staropensource.sosengine.base.logging.Logger;
import de.staropensource.sosengine.base.types.CodePart;
import de.staropensource.sosengine.base.types.LogIssuer;
import lombok.Getter;
import org.jetbrains.annotations.NotNull;
import org.reflections.Reflections;
import org.reflections.scanners.Scanners;
import org.reflections.util.ClasspathHelper;
import org.reflections.util.ConfigurationBuilder;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* Represents an event.
*
* @since 1-alpha0
*/
@Getter
@SuppressWarnings({ "unused", "JavadocDeclaration", "JavadocBlankLines" })
public abstract class Event {
@SuppressWarnings({ "unused" })
public interface Event {
/**
* Instance.
*
* @since 1-alpha0
*
* -- GETTER --
* Returns the extending {@link Event} instance.
*
* @return extending {@link Event} instance
* @since 1-alpha0
* Calls the event.
*/
@Getter()
protected static Event instance;
/**
* The name of the event.
*
* @since 1-alpha0
*
* -- GETTER --
* Returns the name of the event.
*
* @return the event name
* @since 1-alpha0
*/
@NotNull
private final String eventName;
/**
* Constructor.
*
* @since 1-alpha0
*/
public Event() {
this.eventName = this.getClass().getName().replace(this.getClass().getPackage() + ".", "");
// Only allow one instance
if (instance == null)
instance = this;
else
Logger.crash(new LogIssuer(getClass(), CodePart.ENGINE), "Tried reinitializing " + getClass().getName() + " twice");
}
/**
* Returns all annotated methods.
*
* @return list of annotated methods
* @since 1-alpha0
*/
@NotNull
protected List<Method> getAnnotatedMethods() {
List<Method> methods = new ArrayList<>();
Reflections reflections = new Reflections(
new ConfigurationBuilder()
.setUrls(ClasspathHelper.forJavaClassPath())
.setScanners(Scanners.MethodsAnnotated)
);
Set<Method> annotatedMethods = reflections.getMethodsAnnotatedWith(EventListener.class);
for (Method method : annotatedMethods)
if (method.getAnnotation(EventListener.class).event() == this.getClass())
methods.add(method);
return methods;
}
/**
* Invokes all annotated methods without any arguments.
*/
protected void invokeAnnotatedMethods() {
for (Method method : getAnnotatedMethods()) {
try {
method.invoke(null);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NullPointerException | ExceptionInInitializerError ignored) {}
}
}
/**
* Calls the event and notifies all annotated methods about it.
*
* @since 1-alpha0
*/
public abstract void callEvent();
void callEvent();
}

39
base/src/main/java/de/staropensource/sosengine/base/classes/EventPriority.java Normal file
View file

@ -0,0 +1,39 @@
package de.staropensource.sosengine.base.classes;
/**
* Determines in which order events are processed.
*/
@SuppressWarnings("unused")
public enum EventPriority {
/**
* Events with this priority are processed first.
* This event is exclusive to subsystems and should not be used by applications.
*/
EXTREMELY_IMPORTANT,
/**
* Events with this priority are processed after {@code EXTREMELY_IMPORTANT}.
*/
VERY_IMPORTANT,
/**
* Events with this priority are processed after {@code VERY_IMPORTANT}.
*/
IMPORTANT,
/**
* Events with this priority are processed after {@code IMPORTANT}.
*/
UNIMPORTANT,
/**
* Events with this priority are processed after {@code UNIMPORTANT}.
*/
VERY_UNIMPORTANT,
/**
* Events with this priority are processed last.
* This event is exclusive to subsystems and should not be used by applications.
*/
EXTREMELY_UNIMPORTANT,
}

5
base/src/main/java/de/staropensource/sosengine/base/events/EngineCrashEvent.java
View file

@ -20,6 +20,7 @@
package de.staropensource.sosengine.base.events;
import de.staropensource.sosengine.base.classes.Event;
import de.staropensource.sosengine.base.utility.EventHelper;
/**
* Called in the event of an engine crash, just before the JVM exists.
@ -27,10 +28,10 @@ import de.staropensource.sosengine.base.classes.Event;
* @since 1-alpha0
*/
@SuppressWarnings({ "unused" })
public final class EngineCrashEvent extends Event {
public final class EngineCrashEvent implements Event {
/** {@inheritDoc} */
@Override
public void callEvent() {
invokeAnnotatedMethods();
EventHelper.invokeAnnotatedMethods(getClass());
}
}

11
base/src/main/java/de/staropensource/sosengine/base/events/LogEvent.java
View file

@ -22,6 +22,7 @@ package de.staropensource.sosengine.base.events;
import de.staropensource.sosengine.base.classes.Event;
import de.staropensource.sosengine.base.types.LogIssuer;
import de.staropensource.sosengine.base.types.LogLevel;
import de.staropensource.sosengine.base.utility.EventHelper;
import org.jetbrains.annotations.NotNull;
import java.lang.reflect.InvocationTargetException;
@ -33,16 +34,16 @@ import java.lang.reflect.Method;
* @since 1-alpha0
*/
@SuppressWarnings({ "unused" })
public final class LogEvent extends Event {
public final class LogEvent implements Event {
/**
* {@inheritDoc}
* @deprecated use the {@code callEvent} method with arguments
* @see LogEvent#callEventNew(LogLevel, LogIssuer, String)
* @see LogEvent#callEvent(LogLevel, LogIssuer, String)
*/
@Deprecated
@Override
public void callEvent() {
invokeAnnotatedMethods();
EventHelper.invokeAnnotatedMethods(getClass());
}
/**
@ -50,8 +51,8 @@ public final class LogEvent extends Event {
*
* @since 1-alpha0
*/
public void callEventNew(@NotNull LogLevel level, @NotNull LogIssuer logIssuer, @NotNull String message) {
for (Method method : getAnnotatedMethods()) {
public void callEvent(@NotNull LogLevel level, @NotNull LogIssuer logIssuer, @NotNull String message) {
for (Method method : EventHelper.getAnnotatedMethods(getClass())) {
try {
method.invoke(null, level, logIssuer, message);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NullPointerException | ExceptionInInitializerError ignored) {}

2
base/src/main/java/de/staropensource/sosengine/base/logging/CrashHandler.java
View file

@ -144,7 +144,7 @@ public final class CrashHandler {
Logger.getLoggerImplementation().print(LogLevel.CRASH, logIssuer, base);
// Send EngineCrash event
EngineCrashEvent.getInstance().callEvent();
new EngineCrashEvent().callEvent();
// Shutdown JVM
if (EngineConfiguration.getInstance().isLoggerImmediateShutdown())

2
base/src/main/java/de/staropensource/sosengine/base/logging/Logger.java
View file

@ -115,7 +115,7 @@ public final class Logger {
base = loggerImplementation.postPlaceholder(level, logIssuer, base);
// Call event
((LogEvent) LogEvent.getInstance()).callEventNew(level, logIssuer, message);
new LogEvent().callEvent(level, logIssuer, message);
// Print log message
loggerImplementation.print(level, logIssuer, base);

82
base/src/main/java/de/staropensource/sosengine/base/utility/EventHelper.java Normal file
View file

@ -0,0 +1,82 @@
/*
STAROPENSOURCE ENGINE SOURCE FILE
Copyright (c) 2024 The StarOpenSource Engine Contributors
Licensed under the GNU Affero General Public License v3
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package de.staropensource.sosengine.base.utility;
import de.staropensource.sosengine.base.annotations.EventListener;
import de.staropensource.sosengine.base.classes.Event;
import lombok.Getter;
import org.jetbrains.annotations.NotNull;
import org.reflections.Reflections;
import org.reflections.scanners.Scanners;
import org.reflections.util.ClasspathHelper;
import org.reflections.util.ConfigurationBuilder;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
/**
* Represents an event.
*
* @since 1-alpha0
*/
@Getter
@SuppressWarnings({ "unused" })
public class EventHelper {
/**
* Returns all annotated methods.
*
* @return list of annotated methods
* @since 1-alpha0
*/
@NotNull
public static LinkedList<Method> getAnnotatedMethods(Class<? extends Event> clazz) {
LinkedList<Method> methods = new LinkedList<>();
Reflections reflections = new Reflections(
new ConfigurationBuilder()
.setUrls(ClasspathHelper.forJavaClassPath())
.setScanners(Scanners.MethodsAnnotated)
);
Set<Method> annotatedMethods = reflections.getMethodsAnnotatedWith(EventListener.class);
for (Method method : annotatedMethods)
if (method.getAnnotation(EventListener.class).event() == clazz)
methods.add(method);
// Sort 'methods' linked list
methods.sort(Comparator.comparing(method0 -> method0.getAnnotation(EventListener.class).priority()));
return methods;
}
/**
* Invokes all annotated methods without any arguments.
*
* @since 1-alpha0
*/
public static void invokeAnnotatedMethods(Class<? extends Event> clazz) {
for (Method method : getAnnotatedMethods(clazz)) {
try {
method.invoke(null);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NullPointerException | ExceptionInInitializerError ignored) {}
}
}
}