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7141632abf
While Velocity supports BungeeCord-style IP forwarding, it is not secure. Users have a lot of problems setting up firewalls or setting up plugins like IPWhitelist. Further, the BungeeCord IP forwarding protocol still retains essentially its original form, when there is brand new support for custom login plugin messages in 1.13. Velocity's modern IP forwarding uses an HMAC-SHA256 code to ensure authenticity of messages, is packed into a binary format that is smaller than BungeeCord's forwarding, and is integrated into the Minecraft login process by using the 1.13 login plugin message packet.
82 lines
3.3 KiB
Diff
82 lines
3.3 KiB
Diff
From a4d11307f56bfb8d5f7559315844f5cbc64b6ae4 Mon Sep 17 00:00:00 2001
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From: Antony Riley <antony@cyberiantiger.org>
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Date: Tue, 29 Mar 2016 08:22:55 +0300
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Subject: [PATCH] Sanitise RegionFileCache and make configurable.
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RegionFileCache prior to this patch would close every single open region
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file upon reaching a size of 256.
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This patch modifies that behaviour so it closes the the least recently
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used RegionFile.
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The implementation uses a LinkedHashMap as an LRU cache (modified from HashMap).
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The maximum size of the RegionFileCache is also made configurable.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index dccd00127..b4dba7247 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -228,4 +228,9 @@ public class PaperConfig {
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private static void loadPermsBeforePlugins() {
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loadPermsBeforePlugins = getBoolean("settings.load-permissions-yml-before-plugins", true);
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}
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+
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+ public static int regionFileCacheSize = 256;
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+ private static void regionFileCacheSize() {
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+ regionFileCacheSize = getInt("settings.region-file-cache-size", 256);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
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index 2217adf99..c0ab543b9 100644
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--- a/src/main/java/net/minecraft/server/RegionFileCache.java
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+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
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@@ -9,10 +9,12 @@ import java.io.IOException;
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import java.util.Iterator;
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import java.util.Map;
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import javax.annotation.Nullable;
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+import com.destroystokyo.paper.PaperConfig; // Paper
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+import java.util.LinkedHashMap; // Paper
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public class RegionFileCache {
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- public static final Map<File, RegionFile> a = Maps.newHashMap(); // Spigot - private -> public
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+ public static final Map<File, RegionFile> a = new LinkedHashMap(PaperConfig.regionFileCacheSize, 0.75f, true); // Spigot - private -> public, Paper - HashMap -> LinkedHashMap
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public static synchronized RegionFile a(File file, int i, int j) {
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File file1 = new File(file, "region");
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@@ -26,8 +28,8 @@ public class RegionFileCache {
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file1.mkdirs();
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}
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- if (RegionFileCache.a.size() >= 256) {
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- a();
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+ if (RegionFileCache.a.size() >= PaperConfig.regionFileCacheSize) { // Paper
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+ trimCache(); // Paper
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}
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RegionFile regionfile1 = new RegionFile(file2);
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@@ -60,6 +62,22 @@ public class RegionFileCache {
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}
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// CraftBukkit end
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+ // Paper Start
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+ private static synchronized void trimCache() {
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+ Iterator<Map.Entry<File, RegionFile>> itr = RegionFileCache.a.entrySet().iterator();
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+ int count = RegionFileCache.a.size() - PaperConfig.regionFileCacheSize;
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+ while (count-- >= 0 && itr.hasNext()) {
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+ try {
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+ itr.next().getValue().c();
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+ } catch (IOException ioexception) {
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+ ioexception.printStackTrace();
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+ ServerInternalException.reportInternalException(ioexception);
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+ }
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+ itr.remove();
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+ }
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+ }
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+ // Paper End
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+
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public static synchronized void a() {
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Iterator iterator = RegionFileCache.a.values().iterator();
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--
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2.19.1
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