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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
118 lines
6 KiB
Diff
118 lines
6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: underscore11code <minecrafter11mrt@gmail.com>
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Date: Fri, 23 Jul 2021 23:01:42 -0700
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Subject: [PATCH] Add System.out/err catcher
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diff --git a/src/main/java/io/papermc/paper/logging/SysoutCatcher.java b/src/main/java/io/papermc/paper/logging/SysoutCatcher.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..a8e813ca89b033f061e695288b3383bdcf128531
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/logging/SysoutCatcher.java
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@@ -0,0 +1,94 @@
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+package io.papermc.paper.logging;
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+
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+import org.bukkit.Bukkit;
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+import org.bukkit.plugin.java.JavaPlugin;
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+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
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+
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+import java.io.OutputStream;
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+import java.io.PrintStream;
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+import java.util.Objects;
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+import java.util.concurrent.ConcurrentHashMap;
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+import java.util.concurrent.ConcurrentMap;
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+import java.util.concurrent.TimeUnit;
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+import java.util.logging.Level;
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+
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+public final class SysoutCatcher {
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+ private static final boolean SUPPRESS_NAGS = Boolean.getBoolean("io.papermc.paper.suppress.sout.nags");
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+ // Nanoseconds between nag at most; if interval is caught first, this is reset.
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+ // <= 0 for disabling.
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+ private static final long NAG_TIMEOUT = TimeUnit.MILLISECONDS.toNanos(
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+ Long.getLong("io.papermc.paper.sout.nags.timeout", TimeUnit.MINUTES.toMillis(5L)));
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+ // Count since last nag; if timeout is first, this is reset.
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+ // <= 0 for disabling.
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+ private static final long NAG_INTERVAL = Long.getLong("io.papermc.paper.sout.nags.interval", 200L);
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+
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+ // We don't particularly care about how correct this is at any given moment; let's do it on a best attempt basis.
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+ // The records are also pretty small, so let's just go for a size of 64 to start...
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+ //
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+ // Content: Plugin name => nag object
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+ // Why plugin name?: This doesn't store a reference to the plugin; keeps the reload ability.
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+ // Why not clean on reload?: Effort.
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+ private final ConcurrentMap<String, PluginNag> nagRecords = new ConcurrentHashMap<>(64);
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+
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+ public SysoutCatcher() {
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+ System.setOut(new WrappedOutStream(System.out, Level.INFO, "[STDOUT] "));
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+ System.setErr(new WrappedOutStream(System.err, Level.SEVERE, "[STDERR] "));
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+ }
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+
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+ private final class WrappedOutStream extends PrintStream {
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+ private static final StackWalker STACK_WALKER = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
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+ private final Level level;
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+ private final String prefix;
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+
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+ public WrappedOutStream(@NotNull final OutputStream out, final Level level, final String prefix) {
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+ super(out);
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+ this.level = level;
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+ this.prefix = prefix;
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+ }
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+
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+ @Override
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+ public void println(@Nullable final String line) {
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+ final Class<?> clazz = STACK_WALKER.getCallerClass();
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+ try {
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+ final JavaPlugin plugin = JavaPlugin.getProvidingPlugin(clazz);
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+
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+ // Instead of just printing the message, send it to the plugin's logger
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+ plugin.getLogger().log(this.level, this.prefix + line);
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+
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+ if (SysoutCatcher.SUPPRESS_NAGS) {
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+ return;
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+ }
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+ if (SysoutCatcher.NAG_INTERVAL > 0 || SysoutCatcher.NAG_TIMEOUT > 0) {
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+ final PluginNag nagRecord = SysoutCatcher.this.nagRecords.computeIfAbsent(plugin.getName(), k -> new PluginNag());
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+ final boolean hasTimePassed = SysoutCatcher.NAG_TIMEOUT > 0
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+ && (nagRecord.lastNagTimestamp == Long.MIN_VALUE
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+ || nagRecord.lastNagTimestamp + SysoutCatcher.NAG_TIMEOUT <= System.nanoTime());
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+ final boolean hasMessagesPassed = SysoutCatcher.NAG_INTERVAL > 0
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+ && (nagRecord.messagesSinceNag == Long.MIN_VALUE
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+ || ++nagRecord.messagesSinceNag >= SysoutCatcher.NAG_INTERVAL);
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+ if (!hasMessagesPassed && !hasTimePassed) {
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+ return;
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+ }
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+ nagRecord.lastNagTimestamp = System.nanoTime();
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+ nagRecord.messagesSinceNag = 0;
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+ }
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+ Bukkit.getLogger().warning(
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+ String.format("Nag author(s): '%s' of '%s' about their usage of System.out/err.print. "
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+ + "Please use your plugin's logger instead (JavaPlugin#getLogger).",
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+ plugin.getPluginMeta().getAuthors(),
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+ plugin.getPluginMeta().getDisplayName())
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+ );
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+ } catch (final IllegalArgumentException | IllegalStateException e) {
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+ // If anything happens, the calling class doesn't exist, there is no JavaPlugin that "owns" the calling class, etc
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+ // Just print out normally, with some added information
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+ Bukkit.getLogger().log(this.level, String.format("%s[%s] %s", this.prefix, clazz.getName(), line));
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+ }
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+ }
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+ }
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+
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+ private static class PluginNag {
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+ private long lastNagTimestamp = Long.MIN_VALUE;
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+ private long messagesSinceNag = Long.MIN_VALUE;
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+ }
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+}
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index b4af066a21e4893b5ec146d109b5146b6996a0cf..45d887f4143444321f563cdd7d084b2b9ccf911e 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -310,6 +310,7 @@ public final class CraftServer implements Server {
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public Set<String> activeCompatibilities = Collections.emptySet();
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private final io.papermc.paper.datapack.PaperDatapackManager datapackManager; // Paper
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public static Exception excessiveVelEx; // Paper - Velocity warnings
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+ private final io.papermc.paper.logging.SysoutCatcher sysoutCatcher = new io.papermc.paper.logging.SysoutCatcher(); // Paper
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static {
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ConfigurationSerialization.registerClass(CraftOfflinePlayer.class);
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