Paper/patches/server/1035-Add-Lifecycle-Event-system.patch
Jake Potrebic bd38e0318a
Updated Upstream (Bukkit/CraftBukkit) (#10379)
Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
f02baa38 PR-988: Add World#getIntersectingChunks(BoundingBox)
9321d665 Move getItemInUse up to LivingEntity
819eef73 PR-959: Add access to current item's remaining ticks
c4fdadb0 SPIGOT-7601: Add AbstractArrow#getItem
be8261ca Add support for Java 22
26119676 PR-979: Add more translation keys
66753362 PR-985: Correct book maximum pages and characters per page documentation
c8be92fa PR-980: Improve getArmorContents() documentation
f1120ee2 PR-983: Expose riptide velocity to PlayerRiptideEvent

CraftBukkit Changes:
dfaa89bbe PR-1369: Add World#getIntersectingChunks(BoundingBox)
51bbab2b9 Move getItemInUse up to LivingEntity
668e09602 PR-1331: Add access to current item's remaining ticks
a639406d1 SPIGOT-7601: Add AbstractArrow#getItem
0398930fc SPIGOT-7602: Allow opening in-world horse and related inventories
ffd15611c SPIGOT-7608: Allow empty lists to morph to any PDT list
2188dcfa9 Add support for Java 22
45d6a609f SPIGOT-7604: Revert "SPIGOT-7365: DamageCause blocked by shield should trigger invulnerableTime"
06d915943 SPIGOT-7365: DamageCause blocked by shield should trigger invulnerableTime
ca3bc3707 PR-1361: Add more translation keys
366c3ca80 SPIGOT-7600: EntityChangeBlockEvent is not fired for frog eggs
06d0f9ba8 SPIGOT-7593: Fix sapling growth physics / client-side updates
45c2608e4 PR-1366: Expose riptide velocity to PlayerRiptideEvent
29b6bb79b SPIGOT-7587: Remove fixes for now-resolved MC-142590 and MC-109346
2024-04-06 12:53:39 -07:00

782 lines
40 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 18 Jul 2023 17:49:38 -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/PluginBootstrapContextImpl.java b/src/main/java/io/papermc/paper/plugin/bootstrap/PluginBootstrapContextImpl.java
index 30b50e6294c6eaade5e17cfaf34600d122e6251c..0bb7694188d5fb75bb756ce75d0060ea980027ee 100644
--- a/src/main/java/io/papermc/paper/plugin/bootstrap/PluginBootstrapContextImpl.java
+++ b/src/main/java/io/papermc/paper/plugin/bootstrap/PluginBootstrapContextImpl.java
@@ -1,6 +1,8 @@
package io.papermc.paper.plugin.bootstrap;
import io.papermc.paper.plugin.configuration.PluginMeta;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager;
+import io.papermc.paper.plugin.lifecycle.event.PaperLifecycleEventManager;
import io.papermc.paper.plugin.provider.PluginProvider;
import java.nio.file.Path;
import net.kyori.adventure.text.logger.slf4j.ComponentLogger;
@@ -12,6 +14,10 @@ public final class PluginBootstrapContextImpl implements BootstrapContext {
private final Path dataFolder;
private final ComponentLogger logger;
private final Path pluginSource;
+ // Paper start - lifecycle events
+ private boolean allowsLifecycleRegistration = true;
+ private final PaperLifecycleEventManager<BootstrapContext> lifecycleEventManager = new PaperLifecycleEventManager<>(this, () -> this.allowsLifecycleRegistration); // Paper - lifecycle events
+ // Paper end - lifecycle events
public PluginBootstrapContextImpl(PluginMeta config, Path dataFolder, ComponentLogger logger, Path pluginSource) {
this.config = config;
@@ -45,4 +51,20 @@ public final class PluginBootstrapContextImpl implements BootstrapContext {
public @NotNull Path getPluginSource() {
return this.pluginSource;
}
+
+ // Paper start - lifecycle event system
+ @Override
+ public @NotNull PluginMeta getPluginMeta() {
+ return this.config;
+ }
+
+ @Override
+ public LifecycleEventManager<BootstrapContext> getLifecycleManager() {
+ return this.lifecycleEventManager;
+ }
+
+ public void lockLifecycleEventRegistration() {
+ this.allowsLifecycleRegistration = false;
+ }
+ // Paper end
}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventRunner.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventRunner.java
new file mode 100644
index 0000000000000000000000000000000000000000..f84c9c80e701231e5c33ac3c5573f1093e80f38b
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/LifecycleEventRunner.java
@@ -0,0 +1,110 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+import com.google.common.base.Suppliers;
+import com.mojang.logging.LogUtils;
+import io.papermc.paper.plugin.bootstrap.BootstrapContext;
+import io.papermc.paper.plugin.lifecycle.event.registrar.PaperRegistrar;
+import io.papermc.paper.plugin.lifecycle.event.registrar.RegistrarEvent;
+import io.papermc.paper.plugin.lifecycle.event.registrar.RegistrarEventImpl;
+import io.papermc.paper.plugin.lifecycle.event.registrar.ReloadableRegistrarEvent;
+import io.papermc.paper.plugin.lifecycle.event.types.AbstractLifecycleEventType;
+import io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventType;
+import io.papermc.paper.plugin.lifecycle.event.types.OwnerAwareLifecycleEvent;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Predicate;
+import java.util.function.Supplier;
+import org.bukkit.plugin.Plugin;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+import org.slf4j.Logger;
+
+@DefaultQualifier(NonNull.class)
+public class LifecycleEventRunner {
+
+ private static final Logger LOGGER = LogUtils.getClassLogger();
+ private static final Supplier<Set<LifecycleEventType<?, ?, ?>>> BLOCKS_RELOADING = Suppliers.memoize(() -> Set.of( // lazy due to cyclic initialization
+ ));
+ public static final LifecycleEventRunner INSTANCE = new LifecycleEventRunner();
+
+ private final List<LifecycleEventType<?, ?, ?>> lifecycleEventTypes = new ArrayList<>();
+ private boolean blockPluginReloading = false;
+
+ public void checkRegisteredHandler(final LifecycleEventOwner owner, final LifecycleEventType<?, ?, ?> eventType) {
+ /*
+ Lifecycle event handlers for reloadable events that are registered from the BootstrapContext prevent
+ the server from reloading plugins. This is because reloading plugins requires disabling all the plugins,
+ running the reload logic (which would include places where these events should fire) and then re-enabling plugins.
+ */
+ if (owner instanceof BootstrapContext && BLOCKS_RELOADING.get().contains(eventType)) {
+ this.blockPluginReloading = true;
+ }
+ }
+
+ public boolean blocksPluginReloading() {
+ return this.blockPluginReloading;
+ }
+
+ public <O extends LifecycleEventOwner, E extends LifecycleEvent, ET extends LifecycleEventType<O, E, ?>> ET addEventType(final ET eventType) {
+ this.lifecycleEventTypes.add(eventType);
+ return eventType;
+ }
+
+ public <O extends LifecycleEventOwner, E extends PaperLifecycleEvent> void callEvent(final LifecycleEventType<O, ? super E, ?> eventType, final E event) {
+ this.callEvent(eventType, event, $ -> true);
+ }
+
+ public <O extends LifecycleEventOwner, E extends PaperLifecycleEvent> void callEvent(final LifecycleEventType<O, ? super E, ?> eventType, final E event, final Predicate<? super O> ownerPredicate) {
+ final AbstractLifecycleEventType<O, ? super E, ?, ?> lifecycleEventType = (AbstractLifecycleEventType<O, ? super E, ?, ?>) eventType;
+ lifecycleEventType.forEachHandler(registeredHandler -> {
+ try {
+ if (event instanceof final OwnerAwareLifecycleEvent<?> ownerAwareEvent) {
+ ownerAwareGenericHelper(ownerAwareEvent, registeredHandler.owner());
+ }
+ registeredHandler.lifecycleEventHandler().run(event);
+ } catch (final Throwable ex) {
+ LOGGER.error("Could not run '{}' lifecycle event handler from {}", lifecycleEventType.name(), registeredHandler.owner().getPluginMeta().getDisplayName(), ex);
+ } finally {
+ if (event instanceof final OwnerAwareLifecycleEvent<?> ownerAwareEvent) {
+ ownerAwareEvent.setOwner(null);
+ }
+ }
+ }, handler -> ownerPredicate.test(handler.owner()));
+ event.invalidate();
+ }
+
+ private static <O extends LifecycleEventOwner> void ownerAwareGenericHelper(final OwnerAwareLifecycleEvent<O> event, final LifecycleEventOwner possibleOwner) {
+ final @Nullable O owner = event.castOwner(possibleOwner);
+ if (owner != null) {
+ event.setOwner(owner);
+ } else {
+ throw new IllegalStateException("Found invalid owner " + possibleOwner + " for event " + event);
+ }
+ }
+
+ public void unregisterAllEventHandlersFor(final Plugin plugin) {
+ for (final LifecycleEventType<?, ?, ?> lifecycleEventType : this.lifecycleEventTypes) {
+ this.removeEventHandlersOwnedBy(lifecycleEventType, plugin);
+ }
+ }
+
+ private <O extends LifecycleEventOwner> void removeEventHandlersOwnedBy(final LifecycleEventType<O, ?, ?> eventType, final Plugin possibleOwner) {
+ final AbstractLifecycleEventType<O, ?, ?, ?> lifecycleEventType = (AbstractLifecycleEventType<O, ?, ?, ?>) eventType;
+ lifecycleEventType.removeMatching(registeredHandler -> registeredHandler.owner().getPluginMeta().getName().equals(possibleOwner.getPluginMeta().getName()));
+ }
+
+ @SuppressWarnings("unchecked")
+ public <O extends LifecycleEventOwner, R extends PaperRegistrar<? super O>> void callStaticRegistrarEvent(final LifecycleEventType<O, ? extends RegistrarEvent<? super R>, ?> lifecycleEventType, final R registrar, final Class<? extends O> ownerClass) {
+ this.callEvent((LifecycleEventType<O, RegistrarEvent<? super R>, ?>) lifecycleEventType, new RegistrarEventImpl<>(registrar, ownerClass), ownerClass::isInstance);
+ }
+
+ @SuppressWarnings("unchecked")
+ public <O extends LifecycleEventOwner, R extends PaperRegistrar<? super O>> void callReloadableRegistrarEvent(final LifecycleEventType<O, ? extends ReloadableRegistrarEvent<? super R>, ?> lifecycleEventType, final R registrar, final Class<? extends O> ownerClass, final ReloadableRegistrarEvent.Cause cause) {
+ this.callEvent((LifecycleEventType<O, ReloadableRegistrarEvent<? super R>, ?>) lifecycleEventType, new RegistrarEventImpl.ReloadableImpl<>(registrar, ownerClass, cause), ownerClass::isInstance);
+ }
+
+ private LifecycleEventRunner() {
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEvent.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..e941405269a773e8a77e26ffd1afd84f53fadff5
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEvent.java
@@ -0,0 +1,10 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+public interface PaperLifecycleEvent extends LifecycleEvent {
+
+ // called after all handlers have been run. Can be
+ // used to invalid various contexts to plugins can't
+ // try to re-use them by storing them from the event
+ default void invalidate() {
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEventManager.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEventManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..f1be5b9a29435bae0afd2bd951bfe88d1669e7eb
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/PaperLifecycleEventManager.java
@@ -0,0 +1,26 @@
+package io.papermc.paper.plugin.lifecycle.event;
+
+import com.google.common.base.Preconditions;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.AbstractLifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.LifecycleEventHandlerConfiguration;
+import java.util.function.BooleanSupplier;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public final class PaperLifecycleEventManager<O extends LifecycleEventOwner> implements LifecycleEventManager<O> {
+
+ private final O owner;
+ public final BooleanSupplier registrationCheck;
+
+ public PaperLifecycleEventManager(final O owner, final BooleanSupplier registrationCheck) {
+ this.owner = owner;
+ this.registrationCheck = registrationCheck;
+ }
+
+ @Override
+ public void registerEventHandler(final LifecycleEventHandlerConfiguration<? super O> handlerConfiguration) {
+ Preconditions.checkState(this.registrationCheck.getAsBoolean(), "Cannot register lifecycle event handlers");
+ ((AbstractLifecycleEventHandlerConfiguration<? super O, ?, ?>) handlerConfiguration).registerFrom(this.owner);
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/AbstractLifecycleEventHandlerConfiguration.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/AbstractLifecycleEventHandlerConfiguration.java
new file mode 100644
index 0000000000000000000000000000000000000000..6a85a4f581612efff04c1a955493aa2e32476277
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/AbstractLifecycleEventHandlerConfiguration.java
@@ -0,0 +1,26 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.types.AbstractLifecycleEventType;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public abstract class AbstractLifecycleEventHandlerConfiguration<O extends LifecycleEventOwner, E extends LifecycleEvent, CI extends AbstractLifecycleEventHandlerConfiguration<O, E, CI>> implements LifecycleEventHandlerConfiguration<O> {
+
+ private final LifecycleEventHandler<? super E> handler;
+ private final AbstractLifecycleEventType<O, E, ?, CI> type;
+
+ protected AbstractLifecycleEventHandlerConfiguration(final LifecycleEventHandler<? super E> handler, final AbstractLifecycleEventType<O, E, ?, CI> type) {
+ this.handler = handler;
+ this.type = type;
+ }
+
+ public abstract CI config();
+
+ public final void registerFrom(final O owner) {
+ this.type.tryRegister(owner, this.handler, this.config());
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfigurationImpl.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfigurationImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..e0699fcd0a098abc5e1206e7c0fa80b96eca7884
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/MonitorLifecycleEventHandlerConfigurationImpl.java
@@ -0,0 +1,33 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.types.AbstractLifecycleEventType;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public class MonitorLifecycleEventHandlerConfigurationImpl<O extends LifecycleEventOwner, E extends LifecycleEvent> extends AbstractLifecycleEventHandlerConfiguration<O, E, MonitorLifecycleEventHandlerConfigurationImpl<O, E>> implements MonitorLifecycleEventHandlerConfiguration<O> {
+
+ private boolean monitor = false;
+
+ public MonitorLifecycleEventHandlerConfigurationImpl(final LifecycleEventHandler<? super E> handler, final AbstractLifecycleEventType<O, E, ?, MonitorLifecycleEventHandlerConfigurationImpl<O, E>> eventType) {
+ super(handler, eventType);
+ }
+
+ @Override
+ public MonitorLifecycleEventHandlerConfigurationImpl<O, E> config() {
+ return this;
+ }
+
+ public boolean isMonitor() {
+ return this.monitor;
+ }
+
+ @Override
+ public MonitorLifecycleEventHandlerConfiguration<O> monitor() {
+ this.monitor = true;
+ return this;
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfigurationImpl.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfigurationImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..c1d0070fc1594f7a7c29d7dc679da7b347a7140b
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/handler/configuration/PrioritizedLifecycleEventHandlerConfigurationImpl.java
@@ -0,0 +1,43 @@
+package io.papermc.paper.plugin.lifecycle.event.handler.configuration;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.types.AbstractLifecycleEventType;
+import java.util.OptionalInt;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public class PrioritizedLifecycleEventHandlerConfigurationImpl<O extends LifecycleEventOwner, E extends LifecycleEvent> extends AbstractLifecycleEventHandlerConfiguration<O, E, PrioritizedLifecycleEventHandlerConfigurationImpl<O, E>> implements PrioritizedLifecycleEventHandlerConfiguration<O> {
+
+ private static final OptionalInt DEFAULT_PRIORITY = OptionalInt.of(0);
+ private static final OptionalInt MONITOR_PRIORITY = OptionalInt.empty();
+
+ private OptionalInt priority = DEFAULT_PRIORITY;
+
+ public PrioritizedLifecycleEventHandlerConfigurationImpl(final LifecycleEventHandler<? super E> handler, final AbstractLifecycleEventType<O, E, ?, PrioritizedLifecycleEventHandlerConfigurationImpl<O, E>> eventType) {
+ super(handler, eventType);
+ }
+
+ @Override
+ public PrioritizedLifecycleEventHandlerConfigurationImpl<O, E> config() {
+ return this;
+ }
+
+ public OptionalInt priority() {
+ return this.priority;
+ }
+
+ @Override
+ public PrioritizedLifecycleEventHandlerConfiguration<O> priority(final int priority) {
+ this.priority = OptionalInt.of(priority);
+ return this;
+ }
+
+ @Override
+ public PrioritizedLifecycleEventHandlerConfiguration<O> monitor() {
+ this.priority = MONITOR_PRIORITY;
+ return this;
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/PaperRegistrar.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/PaperRegistrar.java
new file mode 100644
index 0000000000000000000000000000000000000000..b2586c881988fbabe07eef1b43eb1b55f2d3fa52
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/PaperRegistrar.java
@@ -0,0 +1,15 @@
+package io.papermc.paper.plugin.lifecycle.event.registrar;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public interface PaperRegistrar<O extends LifecycleEventOwner> extends Registrar {
+
+ void setCurrentContext(@Nullable O owner);
+
+ default void invalidate() {
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEventImpl.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEventImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..6d530c52aaf0dc2cdfe3bd56af557274a7f44256
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/registrar/RegistrarEventImpl.java
@@ -0,0 +1,70 @@
+package io.papermc.paper.plugin.lifecycle.event.registrar;
+
+import io.papermc.paper.plugin.lifecycle.event.LifecycleEventOwner;
+import io.papermc.paper.plugin.lifecycle.event.PaperLifecycleEvent;
+import io.papermc.paper.plugin.lifecycle.event.types.OwnerAwareLifecycleEvent;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public class RegistrarEventImpl<R extends PaperRegistrar<? super O>, O extends LifecycleEventOwner> implements PaperLifecycleEvent, OwnerAwareLifecycleEvent<O>, RegistrarEvent<R> {
+
+ private final R registrar;
+ private final Class<? extends O> ownerClass;
+
+ public RegistrarEventImpl(final R registrar, final Class<? extends O> ownerClass) {
+ this.registrar = registrar;
+ this.ownerClass = ownerClass;
+ }
+
+ @Override
+ public R registrar() {
+ return this.registrar;
+ }
+
+ @Override
+ public final void setOwner(final @Nullable O owner) {
+ this.registrar.setCurrentContext(owner);
+ }
+
+ @Override
+ public final @Nullable O castOwner(final LifecycleEventOwner owner) {
+ return this.ownerClass.isInstance(owner) ? this.ownerClass.cast(owner) : null;
+ }
+
+ @Override
+ public void invalidate() {
+ this.registrar.invalidate();
+ }
+
+ @Override
+ public String toString() {
+ return "RegistrarEventImpl{" +
+ "registrar=" + this.registrar +
+ ", ownerClass=" + this.ownerClass +
+ '}';
+ }
+
+ public static class ReloadableImpl<R extends PaperRegistrar<? super O>, O extends LifecycleEventOwner> extends RegistrarEventImpl<R, O> implements ReloadableRegistrarEvent<R> {
+
+ private final ReloadableRegistrarEvent.Cause cause;
+
+ public ReloadableImpl(final R registrar, final Class<? extends O> ownerClass, final Cause cause) {
+ super(registrar, ownerClass);
+ this.cause = cause;
+ }
+
+ @Override
+ public Cause cause() {
+ return this.cause;
+ }
+
+ @Override
+ public String toString() {
+ return "ReloadableImpl{" +
+ "cause=" + this.cause +
+ "} " + super.toString();
+ }
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/AbstractLifecycleEventType.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/AbstractLifecycleEventType.java
new file mode 100644
index 0000000000000000000000000000000000000000..a65fb37f4a729e2fe9fb81af822db626ec7e6d7b
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/AbstractLifecycleEventType.java
@@ -0,0 +1,50 @@
+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 io.papermc.paper.plugin.lifecycle.event.LifecycleEventRunner;
+import io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.AbstractLifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.LifecycleEventHandlerConfiguration;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public abstract class AbstractLifecycleEventType<O extends LifecycleEventOwner, E extends LifecycleEvent, C extends LifecycleEventHandlerConfiguration<O>, CI extends AbstractLifecycleEventHandlerConfiguration<O, E, CI>> implements LifecycleEventType<O, E, C> {
+
+ private final String name;
+ private final Class<? extends O> ownerType;
+
+ protected AbstractLifecycleEventType(final String name, final Class<? extends O> ownerType) {
+ this.name = name;
+ this.ownerType = ownerType;
+ }
+
+ @Override
+ public String name() {
+ return this.name;
+ }
+
+ private void verifyOwner(final O owner) {
+ if (!this.ownerType.isInstance(owner)) {
+ throw new IllegalArgumentException("You cannot register the lifecycle event '" + this.name + "' on " + owner);
+ }
+ }
+
+ public abstract void forEachHandler(Consumer<? super RegisteredHandler<O, E>> consumer, Predicate<? super RegisteredHandler<O, E>> predicate);
+
+ public abstract void removeMatching(Predicate<? super RegisteredHandler<O, E>> predicate);
+
+ protected abstract void register(O owner, LifecycleEventHandler<? super E> handler, CI config);
+
+ public final void tryRegister(final O owner, final LifecycleEventHandler<? super E> handler, final CI config) {
+ this.verifyOwner(owner);
+ LifecycleEventRunner.INSTANCE.checkRegisteredHandler(owner, this);
+ this.register(owner, handler, config);
+ }
+
+ public record RegisteredHandler<O, E extends LifecycleEvent>(O owner, LifecycleEventHandler<? super E> lifecycleEventHandler) {
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProviderImpl.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProviderImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..0886edad92b40276f268bd745b31bac359fd28af
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/LifecycleEventTypeProviderImpl.java
@@ -0,0 +1,25 @@
+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 io.papermc.paper.plugin.lifecycle.event.LifecycleEventRunner;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public final class LifecycleEventTypeProviderImpl implements LifecycleEventTypeProvider {
+
+ public static LifecycleEventTypeProviderImpl instance() {
+ return (LifecycleEventTypeProviderImpl) LifecycleEventTypeProvider.PROVIDER;
+ }
+
+ @Override
+ public <O extends LifecycleEventOwner, E extends LifecycleEvent> LifecycleEventType.Monitorable<O, E> monitor(final String name, final Class<? extends O> ownerType) {
+ return LifecycleEventRunner.INSTANCE.addEventType(new MonitorableLifecycleEventType<>(name, ownerType));
+ }
+
+ @Override
+ public <O extends LifecycleEventOwner, E extends LifecycleEvent> LifecycleEventType.Prioritizable<O, E> prioritized(final String name, final Class<? extends O> ownerType) {
+ return LifecycleEventRunner.INSTANCE.addEventType(new PrioritizableLifecycleEventType<>(name, ownerType));
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/MonitorableLifecycleEventType.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/MonitorableLifecycleEventType.java
new file mode 100644
index 0000000000000000000000000000000000000000..6d92c1d3adf220154dfe7cba3a3f8158356c3e3c
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/MonitorableLifecycleEventType.java
@@ -0,0 +1,54 @@
+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 io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.MonitorLifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.MonitorLifecycleEventHandlerConfigurationImpl;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public class MonitorableLifecycleEventType<O extends LifecycleEventOwner, E extends LifecycleEvent> extends AbstractLifecycleEventType<O, E, MonitorLifecycleEventHandlerConfiguration<O>, MonitorLifecycleEventHandlerConfigurationImpl<O, E>> implements LifecycleEventType.Monitorable<O, E> {
+
+ final List<RegisteredHandler<O, E>> handlers = new ArrayList<>();
+ int nonMonitorIdx = 0;
+
+ public MonitorableLifecycleEventType(final String name, final Class<? extends O> ownerType) {
+ super(name, ownerType);
+ }
+
+ @Override
+ public MonitorLifecycleEventHandlerConfigurationImpl<O, E> newHandler(final LifecycleEventHandler<? super E> handler) {
+ return new MonitorLifecycleEventHandlerConfigurationImpl<>(handler, this);
+ }
+
+ @Override
+ protected void register(final O owner, final LifecycleEventHandler<? super E> handler, final MonitorLifecycleEventHandlerConfigurationImpl<O, E> config) {
+ final RegisteredHandler<O, E> registeredHandler = new RegisteredHandler<>(owner, handler);
+ if (!config.isMonitor()) {
+ this.handlers.add(this.nonMonitorIdx, registeredHandler);
+ this.nonMonitorIdx++;
+ } else {
+ this.handlers.add(registeredHandler);
+ }
+ }
+
+ @Override
+ public void forEachHandler(final Consumer<? super RegisteredHandler<O, E>> consumer, final Predicate<? super RegisteredHandler<O, E>> predicate) {
+ for (final RegisteredHandler<O, E> handler : this.handlers) {
+ if (predicate.test(handler)) {
+ consumer.accept(handler);
+ }
+ }
+ }
+
+ @Override
+ public void removeMatching(final Predicate<? super RegisteredHandler<O, E>> predicate) {
+ this.handlers.removeIf(predicate);
+ }
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/OwnerAwareLifecycleEvent.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/OwnerAwareLifecycleEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..3e7e7474f301c0725fa2bcd6e19e476fc35f2d5a
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/OwnerAwareLifecycleEvent.java
@@ -0,0 +1,15 @@
+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 org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public interface OwnerAwareLifecycleEvent<O extends LifecycleEventOwner> extends LifecycleEvent {
+
+ void setOwner(@Nullable O owner);
+
+ @Nullable O castOwner(LifecycleEventOwner owner);
+}
diff --git a/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/PrioritizableLifecycleEventType.java b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/PrioritizableLifecycleEventType.java
new file mode 100644
index 0000000000000000000000000000000000000000..6629f7fabf66ce761024268043cc30076ba8a3f1
--- /dev/null
+++ b/src/main/java/io/papermc/paper/plugin/lifecycle/event/types/PrioritizableLifecycleEventType.java
@@ -0,0 +1,64 @@
+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 io.papermc.paper.plugin.lifecycle.event.handler.LifecycleEventHandler;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.PrioritizedLifecycleEventHandlerConfiguration;
+import io.papermc.paper.plugin.lifecycle.event.handler.configuration.PrioritizedLifecycleEventHandlerConfigurationImpl;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.OptionalInt;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+@DefaultQualifier(NonNull.class)
+public class PrioritizableLifecycleEventType<O extends LifecycleEventOwner, E extends LifecycleEvent> extends AbstractLifecycleEventType<O, E, PrioritizedLifecycleEventHandlerConfiguration<O>, PrioritizedLifecycleEventHandlerConfigurationImpl<O, E>> implements LifecycleEventType.Prioritizable<O, E> {
+
+ private static final Comparator<PrioritizedHandler<?, ?>> COMPARATOR = Comparator.comparing(PrioritizedHandler::priority, (o1, o2) -> {
+ if (o1.equals(o2)) {
+ return 0;
+ } else if (o1.isEmpty()) {
+ return 1;
+ } else if (o2.isEmpty()) {
+ return -1;
+ } else {
+ return Integer.compare(o1.getAsInt(), o2.getAsInt());
+ }
+ });
+
+ private final List<PrioritizedHandler<O, E>> handlers = new ArrayList<>();
+
+ public PrioritizableLifecycleEventType(final String name, final Class<? extends O> ownerType) {
+ super(name, ownerType);
+ }
+
+ @Override
+ public PrioritizedLifecycleEventHandlerConfiguration<O> newHandler(final LifecycleEventHandler<? super E> handler) {
+ return new PrioritizedLifecycleEventHandlerConfigurationImpl<>(handler, this);
+ }
+
+ @Override
+ protected void register(final O owner, final LifecycleEventHandler<? super E> handler, final PrioritizedLifecycleEventHandlerConfigurationImpl<O, E> config) {
+ this.handlers.add(new PrioritizedHandler<>(new RegisteredHandler<>(owner, handler), config.priority()));
+ this.handlers.sort(COMPARATOR);
+ }
+
+ @Override
+ public void forEachHandler(final Consumer<? super RegisteredHandler<O, E>> consumer, final Predicate<? super RegisteredHandler<O, E>> predicate) {
+ for (final PrioritizedHandler<O, E> handler : this.handlers) {
+ if (predicate.test(handler.handler())) {
+ consumer.accept(handler.handler());
+ }
+ }
+ }
+
+ @Override
+ public void removeMatching(final Predicate<? super RegisteredHandler<O, E>> predicate) {
+ this.handlers.removeIf(prioritizedHandler -> predicate.test(prioritizedHandler.handler()));
+ }
+
+ private record PrioritizedHandler<O extends LifecycleEventOwner, E extends LifecycleEvent>(RegisteredHandler<O, E> handler, OptionalInt priority) {}
+}
diff --git a/src/main/java/io/papermc/paper/plugin/manager/PaperPluginInstanceManager.java b/src/main/java/io/papermc/paper/plugin/manager/PaperPluginInstanceManager.java
index eeea1e6f7b1ed64567a3f90d8eb2e2cfd53e5912..eedbf46e04b5ae420f9bedcbc2bbb10643ba7e22 100644
--- a/src/main/java/io/papermc/paper/plugin/manager/PaperPluginInstanceManager.java
+++ b/src/main/java/io/papermc/paper/plugin/manager/PaperPluginInstanceManager.java
@@ -279,6 +279,15 @@ class PaperPluginInstanceManager {
+ pluginName + " (Is it up to date?)", ex, plugin); // Paper
}
+ // Paper start - lifecycle event system
+ try {
+ io.papermc.paper.plugin.lifecycle.event.LifecycleEventRunner.INSTANCE.unregisterAllEventHandlersFor(plugin);
+ } catch (Throwable ex) {
+ this.handlePluginException("Error occurred (in the plugin loader) while unregistering lifecycle event handlers for "
+ + pluginName + " (Is it up to date?)", ex, plugin);
+ }
+ // Paper end
+
try {
this.server.getMessenger().unregisterIncomingPluginChannel(plugin);
this.server.getMessenger().unregisterOutgoingPluginChannel(plugin);
diff --git a/src/main/java/io/papermc/paper/plugin/storage/BootstrapProviderStorage.java b/src/main/java/io/papermc/paper/plugin/storage/BootstrapProviderStorage.java
index 2e96308696e131f3f013469a395e5ddda2c5d529..65a66e484c1c39c5f41d97db52f31c67b4479d20 100644
--- a/src/main/java/io/papermc/paper/plugin/storage/BootstrapProviderStorage.java
+++ b/src/main/java/io/papermc/paper/plugin/storage/BootstrapProviderStorage.java
@@ -32,8 +32,9 @@ public class BootstrapProviderStorage extends SimpleProviderStorage<PluginBootst
@Override
public boolean load(PluginProvider<PluginBootstrap> provider, PluginBootstrap provided) {
try {
- BootstrapContext context = PluginBootstrapContextImpl.create(provider, PluginInitializerManager.instance().pluginDirectoryPath());
+ PluginBootstrapContextImpl context = PluginBootstrapContextImpl.create(provider, PluginInitializerManager.instance().pluginDirectoryPath()); // Paper - lifecycle events
provided.bootstrap(context);
+ context.lockLifecycleEventRegistration(); // Paper - lifecycle events
return true;
} catch (Throwable e) {
LOGGER.error("Failed to run bootstrapper for %s. This plugin will not be loaded.".formatted(provider.getSource()), e);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index ab7bc27e870227e6746b77a7b5e109e2cf198b5f..9f7ed337463cc9bb370a5541d9de5cd8f9c1a78a 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1017,6 +1017,11 @@ public final class CraftServer implements Server {
@Override
public void reload() {
+ // Paper start - lifecycle events
+ if (io.papermc.paper.plugin.lifecycle.event.LifecycleEventRunner.INSTANCE.blocksPluginReloading()) {
+ throw new IllegalStateException("A lifecycle event handler has been registered which makes reloading plugins not possible");
+ }
+ // Paper end - lifecycle events
org.spigotmc.WatchdogThread.hasStarted = false; // Paper - Disable watchdog early timeout on reload
this.reloadCount++;
this.configuration = YamlConfiguration.loadConfiguration(this.getConfigFile());
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/MinecraftInternalPlugin.java b/src/main/java/org/bukkit/craftbukkit/scheduler/MinecraftInternalPlugin.java
index d96399e9bf1a58db5a4a22e58abb99e7660e0694..66bdac50130f523f9dc4379b103b7a469f9ca36b 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/MinecraftInternalPlugin.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/MinecraftInternalPlugin.java
@@ -143,4 +143,11 @@ public class MinecraftInternalPlugin 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 @NotNull io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager<org.bukkit.plugin.Plugin> getLifecycleManager() {
+ throw new UnsupportedOperationException("Not supported.");
+ }
+ // Paper end - lifecycle events
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index b4478fc70b6d1ecbfe0accb111e4eebeaab3ffbb..3f0b3b45b4ad64679a3a18f4b105e603aab1637e 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -674,6 +674,13 @@ public final class CraftMagicNumbers implements UnsafeValues {
}
// Paper end - spawn egg color visibility
+ // Paper start - lifecycle event API
+ @Override
+ public 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) {
+ return new io.papermc.paper.plugin.lifecycle.event.PaperLifecycleEventManager<>(plugin, registrationCheck);
+ }
+ // Paper end - lifecycle event API
+
/**
* This helper class represents the different NBT Tags.
* <p>
diff --git a/src/main/resources/META-INF/services/io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventTypeProvider b/src/main/resources/META-INF/services/io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventTypeProvider
new file mode 100644
index 0000000000000000000000000000000000000000..808b1192b60348ad05f0bfbdeda6f94df4876743
--- /dev/null
+++ b/src/main/resources/META-INF/services/io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventTypeProvider
@@ -0,0 +1 @@
+io.papermc.paper.plugin.lifecycle.event.types.LifecycleEventTypeProviderImpl
diff --git a/src/test/java/io/papermc/paper/plugin/PaperTestPlugin.java b/src/test/java/io/papermc/paper/plugin/PaperTestPlugin.java
index 1d14f530ef888102e47eeeaf0d1a6076e51871c4..90cf0c702ca2ff9de64d9718ecba5f2d128953a6 100644
--- a/src/test/java/io/papermc/paper/plugin/PaperTestPlugin.java
+++ b/src/test/java/io/papermc/paper/plugin/PaperTestPlugin.java
@@ -143,4 +143,11 @@ public class PaperTestPlugin 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<org.bukkit.plugin.Plugin> getLifecycleManager() {
+ throw new UnsupportedOperationException("Not supported.");
+ }
+ // Paper end - lifecycle events
}