82 lines
3.6 KiB
Diff
82 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Kyle Wood <demonwav@gmail.com>
|
|
Date: Wed, 2 Dec 2020 21:58:45 -0800
|
|
Subject: [PATCH] Add warning for servers not running on Java 11
|
|
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/util/PaperJvmChecker.java b/src/main/java/com/destroystokyo/paper/util/PaperJvmChecker.java
|
|
new file mode 100644
|
|
index 0000000000000000000000000000000000000000..023123d52fbb458e6ee2d38e42c9651a5c7be728
|
|
--- /dev/null
|
|
+++ b/src/main/java/com/destroystokyo/paper/util/PaperJvmChecker.java
|
|
@@ -0,0 +1,56 @@
|
|
+package com.destroystokyo.paper.util;
|
|
+
|
|
+import org.apache.logging.log4j.LogManager;
|
|
+import org.apache.logging.log4j.Logger;
|
|
+
|
|
+public final class PaperJvmChecker {
|
|
+
|
|
+ private PaperJvmChecker() {}
|
|
+
|
|
+ public static void checkJvm() {
|
|
+ final Logger logger = LogManager.getLogger();
|
|
+
|
|
+ final String javaVersion = System.getProperty("java.version");
|
|
+ final int dotIndex = javaVersion.indexOf('.');
|
|
+
|
|
+ if (javaVersion.startsWith("1.")) {
|
|
+ // definitely old
|
|
+ PaperJvmChecker.printWarning(javaVersion, logger);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ final int endIndex = dotIndex == -1 ? javaVersion.length() : dotIndex;
|
|
+ final String version = javaVersion.substring(0, endIndex);
|
|
+
|
|
+ final int javaVersionNum;
|
|
+ try {
|
|
+ javaVersionNum = Integer.parseInt(version);
|
|
+ } catch (final NumberFormatException e) {
|
|
+ logger.warn("Failed to determine Java version; Could not parse {}", version, e);
|
|
+ PaperJvmChecker.printWarning(javaVersion, logger);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ if (javaVersionNum < 11) {
|
|
+ PaperJvmChecker.printWarning(javaVersion, logger);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ private static void printWarning(final String version, final Logger logger) {
|
|
+ logger.warn("************************************************************");
|
|
+ logger.warn("* WARNING - YOU ARE RUNNING AN OUTDATED VERSION OF JAVA.");
|
|
+ logger.warn("* PAPER WILL STOP BEING COMPATIBLE WITH THIS VERSION OF");
|
|
+ logger.warn("* JAVA WHEN MINECRAFT 1.17 IS RELEASED.");
|
|
+ logger.warn("*");
|
|
+ logger.warn("* Please update the version of Java you use to run Paper");
|
|
+ logger.warn("* to at least Java 11. When Paper for Minecraft 1.17 is");
|
|
+ logger.warn("* released support for versions of Java before 11 will");
|
|
+ logger.warn("* be dropped.");
|
|
+ logger.warn("*");
|
|
+ logger.warn("* Current Java version: " + version);
|
|
+ logger.warn("*");
|
|
+ logger.warn("* Check this forum post for more information: ");
|
|
+ logger.warn("* https://papermc.io/java11");
|
|
+ logger.warn("************************************************************");
|
|
+ }
|
|
+}
|
|
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
index 0108a1a68572df562349688e93f8134cb14d6116..12d781f4ae6a46d0885972035870d5b5b62f5b8b 100644
|
|
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
@@ -950,6 +950,8 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
|
|
LOGGER.info("Done ({})! For help, type \"help\"", doneTime);
|
|
// Paper end
|
|
|
|
+ com.destroystokyo.paper.util.PaperJvmChecker.checkJvm(); // Paper jvm version nag
|
|
+
|
|
org.spigotmc.WatchdogThread.tick(); // Paper
|
|
org.spigotmc.WatchdogThread.hasStarted = true; // Paper
|
|
Arrays.fill( recentTps, 20 );
|