mirror of
https://github.com/IntellectualSites/PlotSquared.git
synced 2024-07-01 11:15:36 +02:00
272 lines
9.9 KiB
Java
272 lines
9.9 KiB
Java
package com.plotsquared.bukkit.util;
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import org.bukkit.Bukkit;
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import org.bukkit.entity.Player;
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import org.bukkit.plugin.Plugin;
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import org.bukkit.plugin.PluginDescriptionFile;
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import org.bukkit.scheduler.BukkitTask;
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import java.io.BufferedReader;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import java.lang.reflect.InvocationTargetException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLEncoder;
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import java.util.Collection;
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import java.util.UUID;
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import java.util.zip.GZIPOutputStream;
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public class Metrics {
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/** The current revision number. */
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private static final int REVISION = 7;
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/** The base url of the metrics domain.*/
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private static final String BASE_URL = "http://report.mcstats.org";
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/** The url used to report a server's status. */
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private static final String REPORT_URL = "/plugin/%s";
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/** Interval of time to ping (in minutes). */
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private static final int PING_INTERVAL = 15;
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/** The plugin this metrics submits for. */
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private final Plugin plugin;
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/** Unique server id. */
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private final String guid;
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/** The scheduled task. */
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private volatile BukkitTask task = null;
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public Metrics(Plugin plugin) {
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this.plugin = plugin;
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this.guid = UUID.randomUUID().toString();
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}
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/**
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* GZip compress a string of bytes.
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*
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* @param input
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*
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* @return byte[] the file as a byte array
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*/
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public static byte[] gzip(String input) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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GZIPOutputStream gzos = null;
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try {
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gzos = new GZIPOutputStream(baos);
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gzos.write(input.getBytes("UTF-8"));
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (gzos != null) {
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try {
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gzos.close();
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} catch (IOException ignore) {}
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}
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}
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return baos.toByteArray();
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}
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/**
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* Appends a json encoded key/value pair to the given string builder.
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*
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* @param json
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* @param key
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* @param value
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*
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*/
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private static void appendJSONPair(StringBuilder json, String key, String value) {
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boolean isValueNumeric = false;
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try {
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if (value.equals("0") || !value.endsWith("0")) {
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Double.parseDouble(value);
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isValueNumeric = true;
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}
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} catch (NumberFormatException ignored) {
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isValueNumeric = false;
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}
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if (json.charAt(json.length() - 1) != '{') {
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json.append(',');
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}
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json.append(escapeJSON(key));
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json.append(':');
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if (isValueNumeric) {
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json.append(value);
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} else {
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json.append(escapeJSON(value));
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}
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}
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/**
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* Escape a string to create a valid JSON string
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*
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* @param text
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*
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* @return String
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*/
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private static String escapeJSON(String text) {
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StringBuilder builder = new StringBuilder();
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builder.append('"');
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for (int index = 0; index < text.length(); index++) {
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char chr = text.charAt(index);
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switch (chr) {
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case '"':
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case '\\':
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builder.append('\\');
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builder.append(chr);
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break;
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case '\b':
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builder.append("\\b");
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break;
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case '\t':
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builder.append("\\t");
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break;
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case '\n':
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builder.append("\\n");
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break;
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case '\r':
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builder.append("\\r");
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break;
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default:
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if (chr < ' ') {
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String t = "000" + Integer.toHexString(chr);
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builder.append("\\u" + t.substring(t.length() - 4));
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} else {
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builder.append(chr);
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}
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break;
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}
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}
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builder.append('"');
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return builder.toString();
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}
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/**
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* Encode text as UTF-8
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*
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* @param text the text to encode
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*
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* @return the encoded text, as UTF-8
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*/
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private static String urlEncode(String text) throws UnsupportedEncodingException {
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return URLEncoder.encode(text, "UTF-8");
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}
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/**
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* Start measuring statistics. This will immediately create an async repeating task as the plugin and send the
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* initial data to the metrics backend, and then after that it will post in increments of PING_INTERVAL * 1200
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* ticks.
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*
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* @return True if statistics measuring is running, otherwise false.
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*/
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public boolean start() {
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// Is metrics already running?
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if (this.task != null) {
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return true;
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}
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// Begin hitting the server with glorious data
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this.task = this.plugin.getServer().getScheduler().runTaskTimerAsynchronously(this.plugin, new Runnable() {
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private boolean firstPost = true;
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@Override
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public void run() {
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try {
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postPlugin(!this.firstPost);
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// After the first post we set firstPost to
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// false
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// Each post thereafter will be a ping
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this.firstPost = false;
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}, 0, PING_INTERVAL * 1200);
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return true;
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}
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/**
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* Generic method that posts a plugin to the metrics website.
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*/
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private void postPlugin(boolean isPing) throws IOException {
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// Server software specific section
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PluginDescriptionFile description = this.plugin.getDescription();
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String pluginName = description.getName();
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boolean onlineMode = Bukkit.getServer().getOnlineMode(); // TRUE if online mode is enabled
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String pluginVersion = description.getVersion();
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String serverVersion = Bukkit.getVersion();
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int playersOnline = 0;
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try {
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if (Bukkit.class.getMethod("getOnlinePlayers", new Class<?>[0]).getReturnType() == Collection.class) {
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playersOnline = ((Collection<?>) Bukkit.class.getMethod("getOnlinePlayers", new Class<?>[0]).invoke(null)).size();
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} else {
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playersOnline = ((Player[]) Bukkit.class.getMethod("getOnlinePlayers", new Class<?>[0]).invoke(null)).length;
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}
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} catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException ex) {
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ex.printStackTrace();
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}
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// END server software specific section -- all code below does not use
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// any code outside of this class / Java
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// Construct the post data
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StringBuilder json = new StringBuilder(1024);
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json.append('{');
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// The plugin's description file containing all of the plugin data such as name, version, author, etc
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appendJSONPair(json, "guid", this.guid);
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appendJSONPair(json, "plugin_version", pluginVersion);
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appendJSONPair(json, "server_version", serverVersion);
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appendJSONPair(json, "players_online", Integer.toString(playersOnline));
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// New data as of R6
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String osname = System.getProperty("os.name");
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String osarch = System.getProperty("os.arch");
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String osversion = System.getProperty("os.version");
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String java_version = System.getProperty("java.version");
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int coreCount = Runtime.getRuntime().availableProcessors();
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// normalize os arch .. amd64 -> x86_64
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if (osarch.equals("amd64")) {
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osarch = "x86_64";
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}
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appendJSONPair(json, "osname", osname);
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appendJSONPair(json, "osarch", osarch);
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appendJSONPair(json, "osversion", osversion);
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appendJSONPair(json, "cores", Integer.toString(coreCount));
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appendJSONPair(json, "auth_mode", onlineMode ? "1" : "0");
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appendJSONPair(json, "java_version", java_version);
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// If we're pinging, append it
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if (isPing) {
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appendJSONPair(json, "ping", "1");
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}
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// close json
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json.append('}');
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// Create the url
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URL url = new URL(BASE_URL + String.format(REPORT_URL, urlEncode(pluginName)));
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// Connect to the website
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URLConnection connection = url.openConnection();
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byte[] uncompressed = json.toString().getBytes();
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byte[] compressed = gzip(json.toString());
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// Headers
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connection.addRequestProperty("User-Agent", "MCStats/" + REVISION);
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connection.addRequestProperty("Content-Type", "application/json");
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connection.addRequestProperty("Content-Encoding", "gzip");
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connection.addRequestProperty("Content-Length", Integer.toString(compressed.length));
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connection.addRequestProperty("Accept", "application/json");
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connection.addRequestProperty("Connection", "close");
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connection.setDoOutput(true);
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try {
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try (OutputStream os = connection.getOutputStream()) {
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os.write(compressed);
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os.flush();
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}
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String response;
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
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response = reader.readLine();
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}
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if (response == null || response.startsWith("ERR") || response.startsWith("7")) {
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if (response == null) {
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response = "null";
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} else if (response.startsWith("7")) {
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response = response.substring(response.startsWith("7,") ? 2 : 1);
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}
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throw new IOException(response);
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}
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} catch (IOException ignored) {}
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}
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} |