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Paper/Spigot-API-Patches/0018-Add-exception-reporting-event.patch

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From 7155b06489e081b18b19b4f122dcd73cce84dffb Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Mon, 29 Feb 2016 20:24:35 -0600
Subject: [PATCH] Add exception reporting event
diff --git a/src/main/java/com/destroystokyo/paper/event/server/ServerExceptionEvent.java b/src/main/java/com/destroystokyo/paper/event/server/ServerExceptionEvent.java
new file mode 100644
index 00000000..4109454a
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/server/ServerExceptionEvent.java
@@ -0,0 +1,37 @@
+package com.destroystokyo.paper.event.server;
+
+import com.google.common.base.Preconditions;
+import org.apache.commons.lang.Validate;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import com.destroystokyo.paper.exception.ServerException;
+
+/**
+ * Called whenever an exception is thrown in a recoverable section of the server.
+ */
+public class ServerExceptionEvent extends Event {
+ private static final HandlerList handlers = new HandlerList();
+ private ServerException exception;
+
+ public ServerExceptionEvent(ServerException exception) {
+ this.exception = Preconditions.checkNotNull(exception, "exception");
+ }
+
+ /**
+ * Gets the wrapped exception that was thrown.
+ *
+ * @return Exception thrown
+ */
+ public ServerException getException() {
+ return exception;
+ }
+
+ @Override
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ public static HandlerList getHandlerList() {
+ return handlers;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerCommandException.java b/src/main/java/com/destroystokyo/paper/exception/ServerCommandException.java
new file mode 100644
index 00000000..6fb39af0
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerCommandException.java
@@ -0,0 +1,64 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Thrown when a command throws an exception
+ */
+public class ServerCommandException extends ServerException {
+
+ private final Command command;
+ private final CommandSender commandSender;
+ private final String[] arguments;
+
+ public ServerCommandException(String message, Throwable cause, Command command, CommandSender commandSender, String[] arguments) {
+ super(message, cause);
+ this.commandSender = checkNotNull(commandSender, "commandSender");
+ this.arguments = checkNotNull(arguments, "arguments");
+ this.command = checkNotNull(command, "command");
+ }
+
+ public ServerCommandException(Throwable cause, Command command, CommandSender commandSender, String[] arguments) {
+ super(cause);
+ this.commandSender = checkNotNull(commandSender, "commandSender");
+ this.arguments = checkNotNull(arguments, "arguments");
+ this.command = checkNotNull(command, "command");
+ }
+
+ protected ServerCommandException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Command command, CommandSender commandSender, String[] arguments) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ this.commandSender = checkNotNull(commandSender, "commandSender");
+ this.arguments = checkNotNull(arguments, "arguments");
+ this.command = checkNotNull(command, "command");
+ }
+
+ /**
+ * Gets the command which threw the exception
+ *
+ * @return exception throwing command
+ */
+ public Command getCommand() {
+ return command;
+ }
+
+ /**
+ * Gets the command sender which executed the command request
+ *
+ * @return command sender of exception thrown command request
+ */
+ public CommandSender getCommandSender() {
+ return commandSender;
+ }
+
+ /**
+ * Gets the arguments which threw the exception for the command
+ *
+ * @return arguments of exception thrown command request
+ */
+ public String[] getArguments() {
+ return arguments;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerEventException.java b/src/main/java/com/destroystokyo/paper/exception/ServerEventException.java
new file mode 100644
index 00000000..410b2413
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerEventException.java
@@ -0,0 +1,52 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.event.Event;
+import org.bukkit.event.Listener;
+import org.bukkit.plugin.Plugin;
+
+import static com.google.common.base.Preconditions.*;
+
+/**
+ * Exception thrown when a server event listener throws an exception
+ */
+public class ServerEventException extends ServerPluginException {
+
+ private final Listener listener;
+ private final Event event;
+
+ public ServerEventException(String message, Throwable cause, Plugin responsiblePlugin, Listener listener, Event event) {
+ super(message, cause, responsiblePlugin);
+ this.listener = checkNotNull(listener, "listener");
+ this.event = checkNotNull(event, "event");
+ }
+
+ public ServerEventException(Throwable cause, Plugin responsiblePlugin, Listener listener, Event event) {
+ super(cause, responsiblePlugin);
+ this.listener = checkNotNull(listener, "listener");
+ this.event = checkNotNull(event, "event");
+ }
+
+ protected ServerEventException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Plugin responsiblePlugin, Listener listener, Event event) {
+ super(message, cause, enableSuppression, writableStackTrace, responsiblePlugin);
+ this.listener = checkNotNull(listener, "listener");
+ this.event = checkNotNull(event, "event");
+ }
+
+ /**
+ * Gets the listener which threw the exception
+ *
+ * @return event listener
+ */
+ public Listener getListener() {
+ return listener;
+ }
+
+ /**
+ * Gets the event which caused the exception
+ *
+ * @return event
+ */
+ public Event getEvent() {
+ return event;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerException.java b/src/main/java/com/destroystokyo/paper/exception/ServerException.java
new file mode 100644
index 00000000..c06ea394
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerException.java
@@ -0,0 +1,23 @@
+package com.destroystokyo.paper.exception;
+
+/**
+ * Wrapper exception for all exceptions that are thrown by the server.
+ */
+public class ServerException extends Exception {
+
+ public ServerException(String message) {
+ super(message);
+ }
+
+ public ServerException(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public ServerException(Throwable cause) {
+ super(cause);
+ }
+
+ protected ServerException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerInternalException.java b/src/main/java/com/destroystokyo/paper/exception/ServerInternalException.java
new file mode 100644
index 00000000..e762ed0d
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerInternalException.java
@@ -0,0 +1,35 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.Bukkit;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+
+/**
+ * Thrown when the internal server throws a recoverable exception.
+ */
+public class ServerInternalException extends ServerException {
+
+ public ServerInternalException(String message) {
+ super(message);
+ }
+
+ public ServerInternalException(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public ServerInternalException(Throwable cause) {
+ super(cause);
+ }
+
+ protected ServerInternalException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+
+ public static void reportInternalException(Throwable cause) {
+ try {
+ Bukkit.getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(cause)));
+ ;
+ } catch (Throwable t) {
+ t.printStackTrace(); // Don't want to rethrow!
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerPluginEnableDisableException.java b/src/main/java/com/destroystokyo/paper/exception/ServerPluginEnableDisableException.java
new file mode 100644
index 00000000..f016ba3b
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerPluginEnableDisableException.java
@@ -0,0 +1,20 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.plugin.Plugin;
+
+/**
+ * Thrown whenever there is an exception with any enabling or disabling of plugins.
+ */
+public class ServerPluginEnableDisableException extends ServerPluginException {
+ public ServerPluginEnableDisableException(String message, Throwable cause, Plugin responsiblePlugin) {
+ super(message, cause, responsiblePlugin);
+ }
+
+ public ServerPluginEnableDisableException(Throwable cause, Plugin responsiblePlugin) {
+ super(cause, responsiblePlugin);
+ }
+
+ protected ServerPluginEnableDisableException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Plugin responsiblePlugin) {
+ super(message, cause, enableSuppression, writableStackTrace, responsiblePlugin);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerPluginException.java b/src/main/java/com/destroystokyo/paper/exception/ServerPluginException.java
new file mode 100644
index 00000000..6defac28
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerPluginException.java
@@ -0,0 +1,38 @@
+package com.destroystokyo.paper.exception;
+
+import com.google.common.base.Preconditions;
+import org.apache.commons.lang.Validate;
+import org.bukkit.plugin.Plugin;
+
+import static com.google.common.base.Preconditions.*;
+
+/**
+ * Wrapper exception for all cases to which a plugin can be immediately blamed for
+ */
+public class ServerPluginException extends ServerException {
+ public ServerPluginException(String message, Throwable cause, Plugin responsiblePlugin) {
+ super(message, cause);
+ this.responsiblePlugin = checkNotNull(responsiblePlugin, "responsiblePlugin");
+ }
+
+ public ServerPluginException(Throwable cause, Plugin responsiblePlugin) {
+ super(cause);
+ this.responsiblePlugin = checkNotNull(responsiblePlugin, "responsiblePlugin");
+ }
+
+ protected ServerPluginException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Plugin responsiblePlugin) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ this.responsiblePlugin = checkNotNull(responsiblePlugin, "responsiblePlugin");
+ }
+
+ private final Plugin responsiblePlugin;
+
+ /**
+ * Gets the plugin which is directly responsible for the exception being thrown
+ *
+ * @return plugin which is responsible for the exception throw
+ */
+ public Plugin getResponsiblePlugin() {
+ return responsiblePlugin;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerPluginMessageException.java b/src/main/java/com/destroystokyo/paper/exception/ServerPluginMessageException.java
new file mode 100644
index 00000000..89e13252
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerPluginMessageException.java
@@ -0,0 +1,64 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+import static com.google.common.base.Preconditions.*;
+
+/**
+ * Thrown when an incoming plugin message channel throws an exception
+ */
+public class ServerPluginMessageException extends ServerPluginException {
+
+ private final Player player;
+ private final String channel;
+ private final byte[] data;
+
+ public ServerPluginMessageException(String message, Throwable cause, Plugin responsiblePlugin, Player player, String channel, byte[] data) {
+ super(message, cause, responsiblePlugin);
+ this.player = checkNotNull(player, "player");
+ this.channel = checkNotNull(channel, "channel");
+ this.data = checkNotNull(data, "data");
+ }
+
+ public ServerPluginMessageException(Throwable cause, Plugin responsiblePlugin, Player player, String channel, byte[] data) {
+ super(cause, responsiblePlugin);
+ this.player = checkNotNull(player, "player");
+ this.channel = checkNotNull(channel, "channel");
+ this.data = checkNotNull(data, "data");
+ }
+
+ protected ServerPluginMessageException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Plugin responsiblePlugin, Player player, String channel, byte[] data) {
+ super(message, cause, enableSuppression, writableStackTrace, responsiblePlugin);
+ this.player = checkNotNull(player, "player");
+ this.channel = checkNotNull(channel, "channel");
+ this.data = checkNotNull(data, "data");
+ }
+
+ /**
+ * Gets the channel to which the error occurred from recieving data from
+ *
+ * @return exception channel
+ */
+ public String getChannel() {
+ return channel;
+ }
+
+ /**
+ * Gets the data to which the error occurred from
+ *
+ * @return exception data
+ */
+ public byte[] getData() {
+ return data;
+ }
+
+ /**
+ * Gets the player which the plugin message causing the exception originated from
+ *
+ * @return exception player
+ */
+ public Player getPlayer() {
+ return player;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerSchedulerException.java b/src/main/java/com/destroystokyo/paper/exception/ServerSchedulerException.java
new file mode 100644
index 00000000..2d0b2d4a
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerSchedulerException.java
@@ -0,0 +1,37 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.scheduler.BukkitTask;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Thrown when a plugin's scheduler fails with an exception
+ */
+public class ServerSchedulerException extends ServerPluginException {
+
+ private final BukkitTask task;
+
+ public ServerSchedulerException(String message, Throwable cause, BukkitTask task) {
+ super(message, cause, task.getOwner());
+ this.task = checkNotNull(task, "task");
+ }
+
+ public ServerSchedulerException(Throwable cause, BukkitTask task) {
+ super(cause, task.getOwner());
+ this.task = checkNotNull(task, "task");
+ }
+
+ protected ServerSchedulerException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, BukkitTask task) {
+ super(message, cause, enableSuppression, writableStackTrace, task.getOwner());
+ this.task = checkNotNull(task, "task");
+ }
+
+ /**
+ * Gets the task which threw the exception
+ *
+ * @return exception throwing task
+ */
+ public BukkitTask getTask() {
+ return task;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/exception/ServerTabCompleteException.java b/src/main/java/com/destroystokyo/paper/exception/ServerTabCompleteException.java
new file mode 100644
index 00000000..5582999f
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/exception/ServerTabCompleteException.java
@@ -0,0 +1,22 @@
+package com.destroystokyo.paper.exception;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+
+/**
+ * Called when a tab-complete request throws an exception
+ */
+public class ServerTabCompleteException extends ServerCommandException {
+
+ public ServerTabCompleteException(String message, Throwable cause, Command command, CommandSender commandSender, String[] arguments) {
+ super(message, cause, command, commandSender, arguments);
+ }
+
+ public ServerTabCompleteException(Throwable cause, Command command, CommandSender commandSender, String[] arguments) {
+ super(cause, command, commandSender, arguments);
+ }
+
+ protected ServerTabCompleteException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, Command command, CommandSender commandSender, String[] arguments) {
+ super(message, cause, enableSuppression, writableStackTrace, command, commandSender, arguments);
+ }
+}
diff --git a/src/main/java/org/bukkit/command/SimpleCommandMap.java b/src/main/java/org/bukkit/command/SimpleCommandMap.java
index 466757b9..08976cd4 100644
--- a/src/main/java/org/bukkit/command/SimpleCommandMap.java
+++ b/src/main/java/org/bukkit/command/SimpleCommandMap.java
@@ -10,6 +10,9 @@ import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerCommandException;
+import com.destroystokyo.paper.exception.ServerTabCompleteException;
import org.apache.commons.lang.Validate;
import org.bukkit.Location;
import org.bukkit.Server;
@@ -152,7 +155,9 @@ public class SimpleCommandMap implements CommandMap {
throw ex;
} catch (Throwable ex) {
target.timings.stopTiming(); // Spigot
- throw new CommandException("Unhandled exception executing '" + commandLine + "' in " + target, ex);
+ String msg = "Unhandled exception executing '" + commandLine + "' in " + target;
+ server.getPluginManager().callEvent(new ServerExceptionEvent(new ServerCommandException(ex, target, sender, args))); // Paper
+ throw new CommandException(msg, ex);
}
// return true as command was handled
@@ -225,7 +230,9 @@ public class SimpleCommandMap implements CommandMap {
} catch (CommandException ex) {
throw ex;
} catch (Throwable ex) {
- throw new CommandException("Unhandled exception executing tab-completer for '" + cmdLine + "' in " + target, ex);
+ String msg = "Unhandled exception executing tab-completer for '" + cmdLine + "' in " + target;
+ server.getPluginManager().callEvent(new ServerExceptionEvent(new ServerTabCompleteException(msg, ex, target, sender, args))); // Paper
+ throw new CommandException(msg, ex);
}
}
diff --git a/src/main/java/org/bukkit/plugin/SimplePluginManager.java b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
index ffb68704..d1f7cdde 100644
--- a/src/main/java/org/bukkit/plugin/SimplePluginManager.java
+++ b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
@@ -18,6 +18,9 @@ import java.util.logging.Level;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
+import com.destroystokyo.paper.event.server.ServerExceptionEvent;
+import com.destroystokyo.paper.exception.ServerEventException;
+import com.destroystokyo.paper.exception.ServerPluginEnableDisableException;
import org.apache.commons.lang.Validate;
import org.bukkit.Server;
import org.bukkit.command.Command;
@@ -403,7 +406,8 @@ public final class SimplePluginManager implements PluginManager {
try {
plugin.getPluginLoader().enablePlugin(plugin);
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while enabling " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while enabling "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin);
}
HandlerList.bakeAll();
@@ -422,36 +426,48 @@ public final class SimplePluginManager implements PluginManager {
try {
plugin.getPluginLoader().disablePlugin(plugin);
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while disabling " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while disabling "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
}
try {
server.getScheduler().cancelTasks(plugin);
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while cancelling tasks for " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while cancelling tasks for "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
}
try {
server.getServicesManager().unregisterAll(plugin);
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while unregistering services for " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while unregistering services for "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
}
try {
HandlerList.unregisterAll(plugin);
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while unregistering events for " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while unregistering events for "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
}
try {
server.getMessenger().unregisterIncomingPluginChannel(plugin);
server.getMessenger().unregisterOutgoingPluginChannel(plugin);
} catch(Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Error occurred (in the plugin loader) while unregistering plugin channels for " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
+ handlePluginException("Error occurred (in the plugin loader) while unregistering plugin channels for "
+ + plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
}
}
}
+ // Paper start
+ private void handlePluginException(String msg, Throwable ex, Plugin plugin) {
+ server.getLogger().log(Level.SEVERE, msg, ex);
+ callEvent(new ServerExceptionEvent(new ServerPluginEnableDisableException(msg, ex, plugin)));
+ }
+ // Paper end
+
public void clearPlugins() {
synchronized (this) {
disablePlugins();
@@ -513,7 +529,13 @@ public final class SimplePluginManager implements PluginManager {
));
}
} catch (Throwable ex) {
- server.getLogger().log(Level.SEVERE, "Could not pass event " + event.getEventName() + " to " + registration.getPlugin().getDescription().getFullName(), ex);
+ // Paper start - error reporting
+ String msg = "Could not pass event " + event.getEventName() + " to " + registration.getPlugin().getDescription().getFullName();
+ server.getLogger().log(Level.SEVERE, msg, ex);
+ if (!(event instanceof ServerExceptionEvent)) { // We don't want to cause an endless event loop
+ callEvent(new ServerExceptionEvent(new ServerEventException(msg, ex, registration.getPlugin(), registration.getListener(), event)));
+ }
+ // Paper end
}
}
}
--
2.12.2
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