e886d8118e
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing
80 lines
3.8 KiB
Diff
80 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Kyle Wood <demonwav@gmail.com>
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Date: Wed, 2 Dec 2020 21:58:45 -0800
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Subject: [PATCH] Add warning for servers not running on Java 11
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diff --git a/src/main/java/io/papermc/paper/util/PaperJvmChecker.java b/src/main/java/io/papermc/paper/util/PaperJvmChecker.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..c6ea429819c07e7f4bc257cad73463a030767825
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/util/PaperJvmChecker.java
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@@ -0,0 +1,48 @@
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+package io.papermc.paper.util;
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+
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+import org.apache.logging.log4j.LogManager;
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+import org.apache.logging.log4j.Logger;
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+
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+import java.util.regex.Matcher;
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+import java.util.regex.Pattern;
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+
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+public class PaperJvmChecker {
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+
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+ private static int getJvmVersion() {
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+ String javaVersion = System.getProperty("java.version");
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+ final Matcher matcher = Pattern.compile("(?:1\\.)?(\\d+)").matcher(javaVersion);
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+ if (!matcher.find()) {
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+ LogManager.getLogger().warn("Failed to determine Java version; Could not parse: {}", javaVersion);
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+ return -1;
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+ }
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+
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+ final String version = matcher.group(1);
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+ try {
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+ return Integer.parseInt(version);
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+ } catch (final NumberFormatException e) {
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+ LogManager.getLogger().warn("Failed to determine Java version; Could not parse {} from {}", version, javaVersion, e);
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+ return -1;
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+ }
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+ }
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+
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+ public static void checkJvm() {
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+ if (getJvmVersion() < 11) {
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+ final Logger logger = LogManager.getLogger();
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+ logger.warn("************************************************************");
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+ logger.warn("* WARNING - YOU ARE RUNNING AN OUTDATED VERSION OF JAVA.");
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+ logger.warn("* PAPER WILL STOP BEING COMPATIBLE WITH THIS VERSION OF");
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+ logger.warn("* JAVA WHEN MINECRAFT 1.17 IS RELEASED.");
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+ logger.warn("*");
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+ logger.warn("* Please update the version of Java you use to run Paper");
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+ logger.warn("* to at least Java 11. When Paper for Minecraft 1.17 is");
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+ logger.warn("* released support for versions of Java before 11 will");
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+ logger.warn("* be dropped.");
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+ logger.warn("*");
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+ logger.warn("* Current Java version: {}", System.getProperty("java.version"));
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+ logger.warn("*");
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+ logger.warn("* Check this forum post for more information: ");
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+ logger.warn("* https://papermc.io/java11");
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+ logger.warn("************************************************************");
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+ }
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+ }
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+}
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index c4b1b18d2e67c71b061d99c9fb71270bdff434d8..242b2924c4b0b163b010a9d771130a6b15160e4c 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -69,6 +69,7 @@ import org.bukkit.craftbukkit.Main;
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import org.bukkit.event.server.ServerLoadEvent;
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// CraftBukkit end
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import co.aikar.timings.MinecraftTimings; // Paper
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+import io.papermc.paper.util.PaperJvmChecker; // Paper
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import org.spigotmc.SlackActivityAccountant; // Spigot
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public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTask> implements IMojangStatistics, ICommandListener, AutoCloseable {
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@@ -954,6 +955,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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LOGGER.info("Done ({})! For help, type \"help\"", doneTime);
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// Paper end
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+ PaperJvmChecker.checkJvm(); // Paper jvm version nag
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org.spigotmc.WatchdogThread.tick(); // Paper
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org.spigotmc.WatchdogThread.hasStarted = true; // Paper
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Arrays.fill( recentTps, 20 );
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