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Paper/Spigot-API-Patches/0017-Add-exception-reporting-event.patch
Aikar e055103d3d
Improve Timings stack protection more 
Ensures in more places that exceptions will not corrupt the Timings stack.

Timings will now better report stack corruption and auto repair itself too.
2019-03-26 00:58:23 -04:00

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From e1e05e05e79b9ba25d403b5648b57c59b1c622cf 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 000000000..d3b00f741
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/server/ServerExceptionEvent.java
@@ -0,0 +1,41 @@
+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;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * 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();
+ @NotNull private ServerException exception;
+
+ public ServerExceptionEvent(@NotNull ServerException exception) {
+ this.exception = Preconditions.checkNotNull(exception, "exception");
+ }
+
+ /**
+ * Gets the wrapped exception that was thrown.
+ *
+ * @return Exception thrown
+ */
+ @NotNull
+ public ServerException getException() {
+ return exception;
+ }
+
+ @NotNull
+ @Override
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ @NotNull
+ 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 000000000..6fb39af04
--- /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 000000000..410b24139
--- /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 000000000..c06ea3942
--- /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 000000000..e762ed0db
--- /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 000000000..f016ba3b1
--- /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 000000000..6defac287
--- /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 000000000..89e132525
--- /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 000000000..2d0b2d4a9
--- /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 000000000..5582999fe
--- /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 6a786b8c5..682d27f94 100644
--- a/src/main/java/org/bukkit/command/SimpleCommandMap.java
+++ b/src/main/java/org/bukkit/command/SimpleCommandMap.java
@@ -9,6 +9,9 @@ import java.util.Iterator;
import java.util.List;
import java.util.Map;
+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;
@@ -148,11 +151,14 @@ public class SimpleCommandMap implements CommandMap {
target.execute(sender, sentCommandLabel, Arrays.copyOfRange(args, 1, args.length));
} // target.timings.stopTiming(); // Spigot // Paper
} catch (CommandException ex) {
+ server.getPluginManager().callEvent(new ServerExceptionEvent(new ServerCommandException(ex, target, sender, args))); // Paper
//target.timings.stopTiming(); // Spigot // Paper
throw ex;
} catch (Throwable ex) {
//target.timings.stopTiming(); // Spigot // Paper
- 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
@@ -227,7 +233,9 @@ 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 fe5725519..4c55f5f8c 100644
--- a/src/main/java/org/bukkit/plugin/SimplePluginManager.java
+++ b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
@@ -19,6 +19,9 @@ 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;
@@ -408,7 +411,8 @@ 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();
@@ -427,36 +431,48 @@ 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();
@@ -518,7 +534,13 @@ 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
}
}
}
--
2.21.0
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