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Paper/patches/api/0149-Add-Git-information-to-version-command-on-startup.patch

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5.0 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Professor Bloodstone <git@bloodstone.dev>
Date: Sun, 20 Jun 2021 01:48:31 +0200
Subject: [PATCH] Add Git information to version command/on startup
diff --git a/src/main/java/io/papermc/paper/util/JarManifests.java b/src/main/java/io/papermc/paper/util/JarManifests.java
new file mode 100644
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index 0000000000000000000000000000000000000000..909617079db61b675cc7b60b44ef96b306076343
--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/JarManifests.java
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@@ -0,0 +1,37 @@
+package io.papermc.paper.util;
+
+import java.io.IOException;
+import java.io.InputStream;
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+import java.net.URL;
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+import java.util.Collections;
+import java.util.Map;
+import java.util.WeakHashMap;
+import java.util.jar.Manifest;
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+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
+
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+@ApiStatus.Internal
+public final class JarManifests {
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+ private JarManifests() {
+ }
+
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+ private static final Map<ClassLoader, Manifest> MANIFESTS = Collections.synchronizedMap(new WeakHashMap<>());
+
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+ public static @Nullable Manifest manifest(final @NotNull Class<?> clazz) {
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+ return MANIFESTS.computeIfAbsent(clazz.getClassLoader(), classLoader -> {
+ final String classLocation = "/" + clazz.getName().replace(".", "/") + ".class";
+ final URL resource = clazz.getResource(classLocation);
+ if (resource == null) {
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+ return null;
+ }
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+ final String classFilePath = resource.toString().replace("\\", "/");
+ final String archivePath = classFilePath.substring(0, classFilePath.length() - classLocation.length());
+ try (final InputStream stream = new URL(archivePath + "/META-INF/MANIFEST.MF").openStream()) {
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+ return new Manifest(stream);
+ } catch (final IOException ex) {
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+ return null;
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+ }
+ });
+ }
+}
diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index 908e1aba5257688bb70fbf1ed83d2212305263a1..303e539338383d0d7825b873611ca5843ee1c0a3 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -54,6 +54,7 @@ import org.bukkit.util.CachedServerIcon;
import org.jetbrains.annotations.Contract;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
+import io.papermc.paper.util.JarManifests; // Paper
/**
* Represents the Bukkit core, for version and Server singleton handling
@@ -103,7 +104,25 @@ public final class Bukkit {
}
Bukkit.server = server;
- server.getLogger().info("This server is running " + getName() + " version " + getVersion() + " (Implementing API version " + getBukkitVersion() + ")");
+ // Paper start - add git information
+ server.getLogger().info(getVersionMessage());
+ }
+ /**
+ * Gets message describing the version server is running.
+ *
+ * @return message describing the version server is running
+ */
+ @NotNull
+ public static String getVersionMessage() {
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+ final var manifest = JarManifests.manifest(Bukkit.getServer().getClass());
+ final String gitBranch = manifest == null ? null : manifest.getMainAttributes().getValue("Git-Branch");
+ final String gitCommit = manifest == null ? null : manifest.getMainAttributes().getValue("Git-Commit");
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+ String branchMsg = " on " + gitBranch;
+ if ("master".equals(gitBranch) || "main".equals(gitBranch)) {
+ branchMsg = ""; // Don't show branch on main/master
+ }
+ return "This server is running " + getName() + " version " + getVersion() + " (Implementing API version " + getBukkitVersion() + ") (Git: " + gitCommit + branchMsg + ")";
+ // Paper end
}
/**
diff --git a/src/main/java/org/bukkit/command/defaults/VersionCommand.java b/src/main/java/org/bukkit/command/defaults/VersionCommand.java
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index b50f614806f4634960d383e8a33f094c2f46935f..e40f017f87d6b6b4770501b106c76dc69ec69abb 100644
--- a/src/main/java/org/bukkit/command/defaults/VersionCommand.java
+++ b/src/main/java/org/bukkit/command/defaults/VersionCommand.java
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@@ -240,7 +240,7 @@ public class VersionCommand extends BukkitCommand {
private void setVersionMessage(final @NotNull net.kyori.adventure.text.Component msg) {
lastCheck = System.currentTimeMillis();
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final net.kyori.adventure.text.Component message = net.kyori.adventure.text.TextComponent.ofChildren(
- net.kyori.adventure.text.Component.text("This server is running " + Bukkit.getName() + " version " + Bukkit.getVersion() + " (Implementing API version " + Bukkit.getBukkitVersion() + ")", net.kyori.adventure.text.format.NamedTextColor.WHITE),
+ net.kyori.adventure.text.Component.text(Bukkit.getVersionMessage(), net.kyori.adventure.text.format.NamedTextColor.WHITE),
net.kyori.adventure.text.Component.newline(),
msg
);