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This work is 100% unfinished. I am pushing it up so that we as a team can work on this update. Do not try to use this branch. You will fail.
202 lines
7.0 KiB
Diff
202 lines
7.0 KiB
Diff
From df28e17f5f2d148f78f8ae0c03a3a7b51da7b081 Mon Sep 17 00:00:00 2001
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From: Kyle Wood <demonwav@gmail.com>
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Date: Thu, 1 Mar 2018 19:37:52 -0600
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Subject: [PATCH] Add version history to version command
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diff --git a/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java b/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java
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new file mode 100644
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index 00000000..1daaca2f
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java
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@@ -0,0 +1,143 @@
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+package com.destroystokyo.paper;
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+
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+import com.google.common.base.MoreObjects;
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+import com.google.gson.Gson;
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+import com.google.gson.JsonSyntaxException;
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+import java.io.BufferedReader;
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+import java.io.BufferedWriter;
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+import java.io.IOException;
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+import java.nio.charset.StandardCharsets;
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+import java.nio.file.Files;
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+import java.nio.file.Path;
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+import java.nio.file.Paths;
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+import java.nio.file.StandardOpenOption;
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+import java.util.Objects;
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+import java.util.logging.Level;
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+import java.util.logging.Logger;
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+import javax.annotation.Nullable;
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+import org.bukkit.Bukkit;
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+
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+public enum VersionHistoryManager {
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+ INSTANCE;
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+
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+ private final Gson gson = new Gson();
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+
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+ private final Logger logger = Bukkit.getLogger();
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+
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+ private VersionData currentData = null;
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+
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+ VersionHistoryManager() {
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+ final Path path = Paths.get("version_history.json");
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+
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+ if (Files.exists(path)) {
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+ // Basic file santiy checks
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+ if (!Files.isRegularFile(path)) {
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+ if (Files.isDirectory(path)) {
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+ logger.severe(path + " is a directory, cannot be used for version history");
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+ } else {
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+ logger.severe(path + " is not a regular file, cannot be used for version history");
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+ }
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+ // We can't continue
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+ return;
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+ }
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+
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+ try (final BufferedReader reader = Files.newBufferedReader(path, StandardCharsets.UTF_8)) {
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+ currentData = gson.fromJson(reader, VersionData.class);
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+ } catch (final IOException e) {
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+ logger.log(Level.SEVERE, "Failed to read version history file '" + path + "'", e);
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+ return;
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+ } catch (final JsonSyntaxException e) {
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+ logger.log(Level.SEVERE, "Invalid json syntax for file '" + path + "'", e);
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+ return;
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+ }
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+
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+ final String version = Bukkit.getVersion();
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+ if (version == null) {
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+ logger.severe("Failed to retrieve current version");
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+ return;
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+ }
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+
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+ if (!version.equals(currentData.getCurrentVersion())) {
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+ // The version appears to have changed
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+ currentData.setOldVersion(currentData.getCurrentVersion());
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+ currentData.setCurrentVersion(version);
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+ writeFile(path);
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+ }
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+ } else {
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+ // File doesn't exist, start fresh
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+ currentData = new VersionData();
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+ // oldVersion is null
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+ currentData.setCurrentVersion(Bukkit.getVersion());
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+ writeFile(path);
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+ }
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+ }
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+
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+ private void writeFile(final Path path) {
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+ try (final BufferedWriter writer = Files.newBufferedWriter(
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+ path,
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+ StandardCharsets.UTF_8,
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+ StandardOpenOption.WRITE,
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+ StandardOpenOption.CREATE,
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+ StandardOpenOption.TRUNCATE_EXISTING
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+ )) {
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+ gson.toJson(currentData, writer);
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+ } catch (final IOException e) {
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+ logger.log(Level.SEVERE, "Failed to write to version history file", e);
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+ }
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+ }
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+
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+ @Nullable
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+ public VersionData getVersionData() {
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+ return currentData;
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+ }
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+
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+ public class VersionData {
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+ private String oldVersion;
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+
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+ private String currentVersion;
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+
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+ @Nullable
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+ public String getOldVersion() {
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+ return oldVersion;
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+ }
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+
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+ public void setOldVersion(@Nullable String oldVersion) {
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+ this.oldVersion = oldVersion;
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+ }
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+
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+ @Nullable
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+ public String getCurrentVersion() {
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+ return currentVersion;
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+ }
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+
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+ public void setCurrentVersion(@Nullable String currentVersion) {
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+ this.currentVersion = currentVersion;
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+ }
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+
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+ @Override
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+ public String toString() {
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+ return MoreObjects.toStringHelper(this)
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+ .add("oldVersion", oldVersion)
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+ .add("currentVersion", currentVersion)
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+ .toString();
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+ }
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+
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+ @Override
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+ public boolean equals(Object o) {
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+ if (this == o) {
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+ return true;
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+ }
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+ if (o == null || getClass() != o.getClass()) {
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+ return false;
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+ }
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+ final VersionData versionData = (VersionData) o;
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+ return Objects.equals(oldVersion, versionData.oldVersion) &&
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+ Objects.equals(currentVersion, versionData.currentVersion);
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+ }
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+
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+ @Override
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+ public int hashCode() {
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+ return Objects.hash(oldVersion, currentVersion);
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+ }
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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 044361af..c45faf4c 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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@@ -31,6 +31,7 @@ import org.json.simple.parser.ParseException;
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// Paper start
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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+import com.destroystokyo.paper.VersionHistoryManager;
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// Paper end
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public class VersionCommand extends BukkitCommand {
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@@ -49,6 +50,7 @@ public class VersionCommand extends BukkitCommand {
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if (args.length == 0) {
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sender.sendMessage("This server is running " + Bukkit.getName() + " version " + Bukkit.getVersion() + " (Implementing API version " + Bukkit.getBukkitVersion() + ")");
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+ tellHistory(sender); // Paper
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sendVersion(sender);
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} else {
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StringBuilder name = new StringBuilder();
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@@ -85,6 +87,22 @@ public class VersionCommand extends BukkitCommand {
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return true;
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}
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+ // Paper start - show version history
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+ private void tellHistory(final CommandSender sender) {
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+ final VersionHistoryManager.VersionData data = VersionHistoryManager.INSTANCE.getVersionData();
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+ if (data == null) {
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+ return;
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+ }
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+
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+ final String oldVersion = data.getOldVersion();
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+ if (oldVersion == null) {
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+ return;
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+ }
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+
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+ sender.sendMessage("Previous version: " + oldVersion);
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+ }
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+ // Paper end
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+
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private void describeToSender(Plugin plugin, CommandSender sender) {
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PluginDescriptionFile desc = plugin.getDescription();
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sender.sendMessage(ChatColor.GREEN + desc.getName() + ChatColor.WHITE + " version " + ChatColor.GREEN + desc.getVersion());
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--
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2.18.0
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