mirror of https://github.com/PaperMC/Paper.git
102 lines
4.8 KiB
Diff
102 lines
4.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Professor Bloodstone <git@bloodstone.dev>
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Date: Sun, 20 Jun 2021 01:48:31 +0200
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Subject: [PATCH] Add Git information to version command/on startup
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diff --git a/src/main/java/io/papermc/paper/util/JarManifests.java b/src/main/java/io/papermc/paper/util/JarManifests.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..909617079db61b675cc7b60b44ef96b306076343
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/util/JarManifests.java
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@@ -0,0 +1,37 @@
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+package io.papermc.paper.util;
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+
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.net.URL;
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+import java.util.Collections;
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+import java.util.Map;
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+import java.util.WeakHashMap;
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+import java.util.jar.Manifest;
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+import org.jetbrains.annotations.ApiStatus;
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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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+@ApiStatus.Internal
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+public final class JarManifests {
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+ private JarManifests() {
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+ }
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+
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+ private static final Map<ClassLoader, Manifest> MANIFESTS = Collections.synchronizedMap(new WeakHashMap<>());
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+
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+ public static @Nullable Manifest manifest(final @NotNull Class<?> clazz) {
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+ return MANIFESTS.computeIfAbsent(clazz.getClassLoader(), classLoader -> {
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+ final String classLocation = "/" + clazz.getName().replace(".", "/") + ".class";
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+ final URL resource = clazz.getResource(classLocation);
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+ if (resource == null) {
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+ return null;
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+ }
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+ final String classFilePath = resource.toString().replace("\\", "/");
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+ final String archivePath = classFilePath.substring(0, classFilePath.length() - classLocation.length());
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+ try (final InputStream stream = new URL(archivePath + "/META-INF/MANIFEST.MF").openStream()) {
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+ return new Manifest(stream);
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+ } catch (final IOException ex) {
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+ return null;
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+ }
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+ });
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+ }
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+}
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diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
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index 3e32a6bbf593b269f1af23c7e2fdafaccc0d2110..d60780a26e10f5f9c80446693552384281327b51 100644
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--- a/src/main/java/org/bukkit/Bukkit.java
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+++ b/src/main/java/org/bukkit/Bukkit.java
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@@ -60,6 +60,7 @@ import org.bukkit.util.CachedServerIcon;
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import org.jetbrains.annotations.Contract;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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+import io.papermc.paper.util.JarManifests; // Paper
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/**
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* Represents the Bukkit core, for version and Server singleton handling
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@@ -109,7 +110,25 @@ public final class Bukkit {
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}
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Bukkit.server = server;
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- server.getLogger().info("This server is running " + getName() + " version " + getVersion() + " (Implementing API version " + getBukkitVersion() + ")");
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+ // Paper start - add git information
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+ server.getLogger().info(getVersionMessage());
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+ }
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+ /**
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+ * Gets message describing the version server is running.
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+ *
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+ * @return message describing the version server is running
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+ */
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+ @NotNull
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+ public static String getVersionMessage() {
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+ final var manifest = JarManifests.manifest(Bukkit.getServer().getClass());
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+ final String gitBranch = manifest == null ? null : manifest.getMainAttributes().getValue("Git-Branch");
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+ final String gitCommit = manifest == null ? null : manifest.getMainAttributes().getValue("Git-Commit");
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+ String branchMsg = " on " + gitBranch;
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+ if ("master".equals(gitBranch) || "main".equals(gitBranch)) {
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+ branchMsg = ""; // Don't show branch on main/master
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+ }
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+ return "This server is running " + getName() + " version " + getVersion() + " (Implementing API version " + getBukkitVersion() + ") (Git: " + gitCommit + branchMsg + ")";
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+ // Paper end
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}
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/**
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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 b437cf212a63aa96a9492db8d01d5d37061aee23..fd5d9881abfd930bb883120f018f76dc78b62b14 100644
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--- a/src/main/java/org/bukkit/command/defaults/VersionCommand.java
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+++ b/src/main/java/org/bukkit/command/defaults/VersionCommand.java
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@@ -256,7 +256,7 @@ public class VersionCommand extends BukkitCommand {
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private void setVersionMessage(final @NotNull Component msg) {
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lastCheck = System.currentTimeMillis();
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final Component message = Component.textOfChildren(
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- Component.text("This server is running " + Bukkit.getName() + " version " + Bukkit.getVersion() + " (Implementing API version " + Bukkit.getBukkitVersion() + ")", NamedTextColor.WHITE),
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+ Component.text(Bukkit.getVersionMessage(), NamedTextColor.WHITE),
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Component.newline(),
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msg
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);
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