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Paper/patches/api/0451-Add-Lifecycle-Event-system.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 18 Jul 2023 14:47:02 -0700
Subject: [PATCH] Add Lifecycle Event system
This event system is separate from Bukkit's event system and is
meant for managing resources across reloads and from points in the
PluginBootstrap.
diff --git a/src/main/java/io/papermc/paper/plugin/bootstrap/BootstrapContext.java b/src/main/java/io/papermc/paper/plugin/bootstrap/BootstrapContext.java
index 08f2050356acaf74e3210416760e3873c2dafd2c..37dfdcfcbd14947e0550e7528aca68f452e53eb6 100644
--- a/src/main/java/io/papermc/paper/plugin/bootstrap/BootstrapContext.java
+++ b/src/main/java/io/papermc/paper/plugin/bootstrap/BootstrapContext.java
@@ -1,6 +1,9 @@
package io.papermc.paper.plugin.bootstrap;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
/**
* Represents the context provided to a {@link PluginBootstrap} during both the bootstrapping and plugin
@@ -10,5 +13,13 @@ import org.jetbrains.annotations.ApiStatus;
*/
@ApiStatus.Experimental
@ApiStatus.NonExtendable
-public interface BootstrapContext extends PluginProviderContext {
+public interface BootstrapContext extends PluginProviderContext, LifecycleEventOwner {
+
+ /**
+ * Get the lifecycle event manager for registering handlers
+ * for lifecycle events allowed on the {@link BootstrapContext}.
+ *
+ * @return the lifecycle event manager
+ */
+ @NotNull LifecycleEventManager<BootstrapContext> getLifecycleManager();
}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEvent.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..0b8eafd3e79494d4a750cd9182387fbaead24011
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEvent.java
@@ -0,0 +1,17 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+import io.papermc.paper.plugin.lifecycle.event.types.LifecycleEvents;
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * Base type for all Lifecycle Events.
+ * <p>
+ * Lifecycle events are generally fired when the older
+ * event system is not available, like during early
+ * server initialization.
+ * @see LifecycleEvents
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface LifecycleEvent {
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventManager.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..3626ce3da17f20ec44f0c15baa13f40e1dc2bc9c
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventManager.java
@@ -0,0 +1,52 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.LifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventType;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Manages a plugin's lifecycle events. Can be obtained
+ * from {@link org.bukkit.plugin.Plugin} or {@link io.papermc.paper.plugin.bootstrap.BootstrapContext}.
+ *
+ * @param <O> the owning type, {@link org.bukkit.plugin.Plugin} or {@link io.papermc.paper.plugin.bootstrap.BootstrapContext}
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface LifecycleEventManager<O extends LifecycleEventOwner> {
+
+ /**
+ * Registers an event handler for a specific event type.
+ * <p>
+ * This is shorthand for creating a new {@link LifecycleEventHandlerConfiguration} and
+ * just passing in the {@link LifecycleEventHandler}.
+ * <pre>{@code
+ * LifecycleEventHandler<RegistrarEvent<Commands>> handler = new Handler();
+ * manager.registerEventHandler(LifecycleEvents.COMMANDS, handler);
+ * }</pre>
+ * is equivalent to
+ * <pre>{@code
+ * LifecycleEventHandler<RegistrarEvent<Commands>> handler = new Handler();
+ * manager.registerEventHandler(LifecycleEvents.COMMANDS.newHandler(handler));
+ * }</pre>
+ *
+ * @param eventType the event type to listen to
+ * @param eventHandler the handler for that event
+ * @param <E> the type of the event object
+ */
+ default <E extends LifecycleEvent> void registerEventHandler(final @NotNull LifecycleEventType<? super O, ? extends E, ?> eventType, final @NotNull LifecycleEventHandler<? super E> eventHandler) {
+ this.registerEventHandler(eventType.newHandler(eventHandler));
+ }
+
+ /**
+ * Registers an event handler configuration.
+ * <p>
+ * Configurations are created via {@link LifecycleEventType#newHandler(LifecycleEventHandler)}.
+ * Event types may have different configurations options available on the builder-like object
+ * returned by {@link LifecycleEventType#newHandler(LifecycleEventHandler)}.
+ *
+ * @param handlerConfiguration the handler configuration to register
+ */
+ void registerEventHandler(@NotNull LifecycleEventHandlerConfiguration<? super O> handlerConfiguration);
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventOwner.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventOwner.java
new file mode 100644
index 0000000000000000000000000000000000000000..1160474f94476b580426cec29756c4699e163bf7
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventOwner.java
@@ -0,0 +1,24 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+import io.papermc.paper.plugin.configuration.PluginMeta;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Implemented by types that are considered owners
+ * of registered handlers for lifecycle events. Generally
+ * the types that implement this interface also provide
+ * a {@link LifecycleEventManager} where you can register
+ * event handlers.
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface LifecycleEventOwner {
+
+ /**
+ * Get the plugin meta for this plugin.
+ *
+ * @return the plugin meta
+ */
+ @NotNull PluginMeta getPluginMeta();
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/LifecycleEventHandler.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/LifecycleEventHandler.java
new file mode 100644
index 0000000000000000000000000000000000000000..8239ba3c0147c0e8e8d28987d3f543a67641892a
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/LifecycleEventHandler.java
@@ -0,0 +1,18 @@
+package io.papermc.paper.plugin.lifecycle.event.handler;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * A handler for a specific event. Can be implemented
+ * in a concrete class or as a lambda.
+ *
+ * @param <E> the event
+ */
+@ApiStatus.Experimental
+@FunctionalInterface
+public interface LifecycleEventHandler<E extends LifecycleEvent> {
+
+ void run(@NotNull E event);
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/LifecycleEventHandlerConfiguration.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/LifecycleEventHandlerConfiguration.java
new file mode 100644
index 0000000000000000000000000000000000000000..0831794fad1f6eb8960225909d40f4a3b20a2a3b
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/LifecycleEventHandlerConfiguration.java
@@ -0,0 +1,18 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * Base type for constructing configured event handlers for
+ * lifecycle events. Usually created via {@link io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventType#newHandler(LifecycleEventHandler)}
+ * from event types in {@link io.papermc.paper.plugin.lifecycle.event.types.LifecycleEvents}
+ *
+ * @param <O>
+ */
+@SuppressWarnings("unused")
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface LifecycleEventHandlerConfiguration<O extends LifecycleEventOwner> {
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfiguration.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfiguration.java
new file mode 100644
index 0000000000000000000000000000000000000000..d307ede51a66279f2eeef4e5b41c71779503f0d4
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfiguration.java
@@ -0,0 +1,25 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Contract;
+
+/**
+ * Handler configuration for event types that allow "monitor" handlers.
+ *
+ * @param <O> the required owner type
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface MonitorLifecycleEventHandlerConfiguration<O extends LifecycleEventOwner> extends LifecycleEventHandlerConfiguration<O> {
+
+ /**
+ * Sets this handler configuration to be considered a "monitor".
+ * These handlers will run last and should only be used by plugins
+ * to observe changes from previously run handlers.
+ *
+ * @return this configuration for chaining
+ */
+ @Contract("-> this")
+ MonitorLifecycleEventHandlerConfiguration<O> monitor();
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfiguration.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfiguration.java
new file mode 100644
index 0000000000000000000000000000000000000000..1c404df0be359ceac7fb52fec03027c771395e07
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfiguration.java
@@ -0,0 +1,39 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Contract;
+
+/**
+ * Handler configuration that allows both "monitor" and prioritized handlers.
+ * The default priority is 0.
+ *
+ * @param <O> the required owner type
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface PrioritizedLifecycleEventHandlerConfiguration<O extends LifecycleEventOwner> extends LifecycleEventHandlerConfiguration<O> {
+
+ /**
+ * Sets the priority for this handler. Resets
+ * all previous calls to {@link #monitor()}. A
+ * lower numeric value correlates to the handler
+ * being run earlier.
+ *
+ * @param priority the numerical priority
+ * @return this configuration for chaining
+ */
+ @Contract("_ -> this")
+ PrioritizedLifecycleEventHandlerConfiguration<O> priority(int priority);
+
+ /**
+ * Sets this handler configuration to be considered a "monitor".
+ * These handlers will run last and should only be used by plugins
+ * to observe any changes from previously ran handlers.
+ *
+ * @return this configuration for chaining
+ */
+ @Contract("-> this")
+ PrioritizedLifecycleEventHandlerConfiguration<O> monitor();
+
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/Registrar.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/Registrar.java
new file mode 100644
index 0000000000000000000000000000000000000000..fd9c3605a8f5e6bdd31e42f18a45154d4074eb67
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/Registrar.java
@@ -0,0 +1,12 @@
+package io.papermc.paper.plugin.lifecycle.event.registrar;
+
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * To be implemented by types that provide ways to register types
+ * either on server start or during a reload
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface Registrar {
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEvent.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..2e5758d1af6215f33f89b12984a5594df592147f
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEvent.java
@@ -0,0 +1,27 @@
+package io.papermc.paper.plugin.lifecycle.event.registrar;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * A lifecycle event that exposes a {@link Registrar} of some kind
+ * to allow management of various things. Look at implementations of
+ * {@link Registrar} for an idea of what uses this event.
+ *
+ * @param <R> registrar type
+ * @see ReloadableRegistrarEvent
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface RegistrarEvent<R extends Registrar> extends LifecycleEvent {
+
+ /**
+ * Get the registrar related to this event.
+ *
+ * @return the registrar
+ */
+ @Contract(pure = true)
+ @NotNull R registrar();
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/ReloadableRegistrarEvent.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/ReloadableRegistrarEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..b8b439bdad2e47c7c715fe30e0c1e69aa25374dd
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/ReloadableRegistrarEvent.java
@@ -0,0 +1,38 @@
+package io.papermc.paper.plugin.lifecycle.event.registrar;
+
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * A lifecycle event that exposes a {@link Registrar} that is
+ * reloadable.
+ *
+ * @param <R> the registrar type
+ * @see RegistrarEvent
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface ReloadableRegistrarEvent<R extends Registrar> extends RegistrarEvent<R> {
+
+ /**
+ * Get the cause of this reload.
+ *
+ * @return the cause
+ */
+ @Contract(pure = true)
+ @NotNull Cause cause();
+
+ @ApiStatus.Experimental
+ enum Cause {
+ /**
+ * The initial load of the server.
+ */
+ INITIAL,
+ /**
+ * A reload, triggered via one of the various mechanisms like
+ * the bukkit or minecraft reload commands.
+ */
+ RELOAD
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventType.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventType.java
new file mode 100644
index 0000000000000000000000000000000000000000..92ea0374079a228ccc59c00fcf58abff2f6c46fe
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventType.java
@@ -0,0 +1,73 @@
+package io.papermc.paper.plugin.lifecycle.event.types;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.LifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.MonitorLifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.PrioritizedLifecycleEventHandlerConfiguration;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Base type for all types of lifecycle events. Differs from
+ * {@link LifecycleEvent} which is the actual event object, whereas
+ * this is an object representing the type of the event. Used
+ * to construct subtypes of {@link LifecycleEventHandlerConfiguration} for
+ * use in {@link LifecycleEventManager}
+ *
+ * @param <O> the required owner type
+ * @param <E> the event object type
+ * @param <C> the configuration type
+ */
+@ApiStatus.Experimental
+@ApiStatus.NonExtendable
+public interface LifecycleEventType<O extends LifecycleEventOwner, E extends LifecycleEvent, C extends LifecycleEventHandlerConfiguration<O>> {
+
+ /**
+ * Gets the name of the lifecycle event.
+ *
+ * @return the name
+ */
+ @Contract(pure = true)
+ @NotNull String name();
+
+ /**
+ * Create a configuration for this event with the specified
+ * handler.
+ *
+ * @param handler the event handler
+ * @return a new configuration
+ * @see LifecycleEventManager#registerEventHandler(LifecycleEventHandlerConfiguration)
+ */
+ @Contract("_ -> new")
+ @NotNull C newHandler(@NotNull LifecycleEventHandler<? super E> handler);
+
+ /**
+ * Lifecycle event type that supports separate registration
+ * of handlers as "monitors" that are run last. Useful
+ * if a plugin wants to only observe the changes other handlers
+ * made.
+ *
+ * @param <O> the required owner type
+ * @param <E> the event object type
+ */
+ @ApiStatus.Experimental
+ @ApiStatus.NonExtendable
+ interface Monitorable<O extends LifecycleEventOwner, E extends LifecycleEvent> extends LifecycleEventType<O, E, MonitorLifecycleEventHandlerConfiguration<O>> {
+ }
+
+ /**
+ * Lifecycle event type that supports both {@link Monitorable "monitors"} and
+ * specific numeric-based priorities.
+ *
+ * @param <O> the required owner type
+ * @param <E> the event object type
+ */
+ @ApiStatus.Experimental
+ @ApiStatus.NonExtendable
+ interface Prioritizable<O extends LifecycleEventOwner, E extends LifecycleEvent> extends LifecycleEventType<O, E, PrioritizedLifecycleEventHandlerConfiguration<O>> {
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProvider.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProvider.java
new file mode 100644
index 0000000000000000000000000000000000000000..1588f6943a909bed053a952e650e043c44028c2d
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProvider.java
@@ -0,0 +1,18 @@
+package io.papermc.paper.plugin.lifecycle.event.types;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import java.util.ServiceLoader;
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
+interface LifecycleEventTypeProvider {
+
+ LifecycleEventTypeProvider PROVIDER = ServiceLoader.load(LifecycleEventTypeProvider.class)
+ .findFirst()
+ .orElseThrow();
+
+ <O extends LifecycleEventOwner, E extends LifecycleEvent> LifecycleEventType.Monitorable<O, E> monitor(String name, Class<? extends O> ownerType);
+
+ <O extends LifecycleEventOwner, E extends LifecycleEvent> LifecycleEventType.Prioritizable<O, E> prioritized(String name, Class<? extends O> ownerType);
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEvents.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEvents.java
new file mode 100644
index 0000000000000000000000000000000000000000..304f978e40e1759bb19704cc5cec399500905195
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEvents.java
@@ -0,0 +1,52 @@
+package io.papermc.paper.plugin.lifecycle.event.types;
+
+import io.papermc.paper.plugin.bootstrap.BootstrapContext;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * Holds various types of lifecycle events for
+ * use when creating event handler configurations
+ * in {@link LifecycleEventManager}.
+ */
+@ApiStatus.Experimental
+public final class LifecycleEvents {
+
+ //<editor-fold desc="helper methods" defaultstate="collapsed">
+ @ApiStatus.Internal
+ private static <E extends LifecycleEvent> LifecycleEventType.Monitorable<Plugin, E> plugin(final String name) {
+ return monitor(name, Plugin.class);
+ }
+
+ @ApiStatus.Internal
+ private static <E extends LifecycleEvent> LifecycleEventType.Prioritizable<Plugin, E> pluginPrioritized(final String name) {
+ return prioritized(name, Plugin.class);
+ }
+
+ @ApiStatus.Internal
+ private static <E extends LifecycleEvent> LifecycleEventType.Monitorable<BootstrapContext, E> bootstrap(final String name) {
+ return monitor(name, BootstrapContext.class);
+ }
+
+ @ApiStatus.Internal
+ private static <E extends LifecycleEvent> LifecycleEventType.Prioritizable<BootstrapContext, E> bootstrapPrioritized(final String name) {
+ return prioritized(name, BootstrapContext.class);
+ }
+
+ @ApiStatus.Internal
+ private static <O extends LifecycleEventOwner, E extends LifecycleEvent, O2 extends O> LifecycleEventType.Monitorable<O, E> monitor(final String name, final Class<O2> ownerType) {
+ return LifecycleEventTypeProvider.PROVIDER.monitor(name, ownerType);
+ }
+
+ @ApiStatus.Internal
+ private static <O extends LifecycleEventOwner, E extends LifecycleEvent> LifecycleEventType.Prioritizable<O, E> prioritized(final String name, final Class<? extends O> ownerType) {
+ return LifecycleEventTypeProvider.PROVIDER.prioritized(name, ownerType);
+ }
+ //</editor-fold>
+
+ private LifecycleEvents() {
+ }
+}
diff --git a/src/main/java/org/bukkit/UnsafeValues.java b/src/main/java/org/bukkit/UnsafeValues.java
index 02d34db5f44ed63c4635077eb2b3cb98ac94b7b2..3f1b48fd65df954e874e6dc6b9093cb12370e2c5 100644
--- a/src/main/java/org/bukkit/UnsafeValues.java
+++ b/src/main/java/org/bukkit/UnsafeValues.java
@@ -265,4 +265,12 @@ public interface UnsafeValues {
*/
@Nullable org.bukkit.Color getSpawnEggLayerColor(org.bukkit.entity.EntityType entityType, int layer);
// Paper end - spawn egg color visibility
+
+ // Paper start - lifecycle event API
+ /**
+ * @hidden
+ */
+ @org.jetbrains.annotations.ApiStatus.Internal
+ io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager<org.bukkit.plugin.Plugin> createPluginLifecycleEventManager(final org.bukkit.plugin.java.JavaPlugin plugin, final java.util.function.BooleanSupplier registrationCheck);
+ // Paper end - lifecycle event API
}
diff --git a/src/main/java/org/bukkit/plugin/Plugin.java b/src/main/java/org/bukkit/plugin/Plugin.java
index 4eb639fbb46a0848be207149ea433455550fae1c..ef431219fd2bce48bad63b6b92c99d54348d480e 100644
--- a/src/main/java/org/bukkit/plugin/Plugin.java
+++ b/src/main/java/org/bukkit/plugin/Plugin.java
@@ -16,7 +16,7 @@ import org.jetbrains.annotations.Nullable;
* <p>
* The use of {@link PluginBase} is recommended for actual Implementation
*/
-public interface Plugin extends TabExecutor {
+public interface Plugin extends TabExecutor, io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner { // Paper
/**
* Returns the folder that the plugin data's files are located in. The
* folder may not yet exist.
@@ -224,4 +224,14 @@ public interface Plugin extends TabExecutor {
*/
@NotNull
public String getName();
+
+ // Paper start - lifecycle events
+ /**
+ * Get the lifecycle event manager for registering handlers
+ * for lifecycle events allowed on the {@link Plugin}.
+ *
+ * @return the lifecycle event manager
+ */
+ io.papermc.paper.plugin.lifecycle.event.@NotNull LifecycleEventManager<Plugin> getLifecycleManager();
+ // Paper end - lifecycle events
}
diff --git a/src/main/java/org/bukkit/plugin/java/JavaPlugin.java b/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
index 5cd236965de12392d8c7aa81307c0ff1cc8673b1..34037d3da2c536bac088e0ff629ee8f1daccc65b 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
@@ -47,6 +47,11 @@ public abstract class JavaPlugin extends PluginBase {
private FileConfiguration newConfig = null;
private File configFile = null;
private Logger logger = null; // Paper - PluginLogger -> Logger
+ // Paper start - lifecycle events
+ @SuppressWarnings("deprecation")
+ private final io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager<org.bukkit.plugin.Plugin> lifecycleEventManager = org.bukkit.Bukkit.getUnsafe().createPluginLifecycleEventManager(this, () -> this.allowsLifecycleRegistration);
+ private boolean allowsLifecycleRegistration = true;
+ // Paper end
public JavaPlugin() {
// Paper start
@@ -278,7 +283,9 @@ public abstract class JavaPlugin extends PluginBase {
isEnabled = enabled;
if (isEnabled) {
+ try { // Paper - lifecycle events
onEnable();
+ } finally { this.allowsLifecycleRegistration = false; } // Paper - lifecycle events
} else {
onDisable();
}
@@ -456,4 +463,11 @@ public abstract class JavaPlugin extends PluginBase {
}
return plugin;
}
+
+ // Paper start - lifecycle events
+ @Override
+ public final io.papermc.paper.plugin.lifecycle.event.@NotNull LifecycleEventManager<org.bukkit.plugin.Plugin> getLifecycleManager() {
+ return this.lifecycleEventManager;
+ }
+ // Paper end - lifecycle events
}
diff --git a/src/test/java/org/bukkit/plugin/TestPlugin.java b/src/test/java/org/bukkit/plugin/TestPlugin.java
index 43b58e920e739bb949ac0673e9ef73ba7b500dc9..affe88cf8e98a787e197936f5fc443464a2343c6 100644
--- a/src/test/java/org/bukkit/plugin/TestPlugin.java
+++ b/src/test/java/org/bukkit/plugin/TestPlugin.java
@@ -133,4 +133,11 @@ public class TestPlugin extends PluginBase {
public List<String> onTabComplete(CommandSender sender, Command command, String alias, String[] args) {
throw new UnsupportedOperationException("Not supported.");
}
+
+ // Paper start - lifecycle events
+ @Override
+ public io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager<Plugin> getLifecycleManager() {
+ throw new UnsupportedOperationException("Not supported.");
+ }
+ // Paper end - lifecycle events
}
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