415 lines
14 KiB
Java
415 lines
14 KiB
Java
package com.boydti.fawe.util.metrics;
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import com.boydti.fawe.Fawe;
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import com.boydti.fawe.configuration.file.YamlConfiguration;
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import com.boydti.fawe.object.RunnableVal;
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import com.boydti.fawe.object.io.PGZIPOutputStream;
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import com.boydti.fawe.util.TaskManager;
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import com.google.gson.Gson;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonObject;
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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.ByteArrayOutputStream;
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import java.io.Closeable;
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import java.io.DataOutputStream;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.lang.reflect.InvocationTargetException;
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import java.net.MalformedURLException;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.nio.file.Path;
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import java.util.Timer;
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import java.util.TimerTask;
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import java.util.UUID;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import javax.net.ssl.HttpsURLConnection;
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/**
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* bStats collects some data for plugin authors.
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*
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* Check out https://bStats.org/ to learn more about bStats!
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*/
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public class BStats implements Closeable {
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// The version of this bStats class
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public static final int B_STATS_VERSION = 1;
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// The url to which the data is sent
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private final String url;
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// The plugin
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private final String plugin;
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private final String platform;
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private final boolean online;
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private final String serverVersion;
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private final String pluginVersion;
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private Timer timer;
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private Gson gson = new Gson();
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// Is bStats enabled on this server?
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private boolean enabled;
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// The uuid of the server
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private UUID serverUUID;
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// Should failed requests be logged?
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private boolean logFailedRequests = false;
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// A list with all known metrics class objects including this one
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private static Class<?> usedMetricsClass;
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private static final ConcurrentLinkedQueue<Object> knownMetricsInstances = new ConcurrentLinkedQueue<>();
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public BStats() {
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this("FastAsyncWorldEdit", Fawe.get().getVersion().toString(), Fawe.imp().getPlatformVersion(), Fawe.imp().getPlatform(), Fawe.imp().isOnlineMode());
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}
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public int getPlayerCount() {
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return Fawe.imp() == null ? 1 : Fawe.imp().getPlayerCount();
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}
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private BStats(String plugin, String pluginVersion, String serverVersion, String platform, boolean online) {
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this.url = "https://bStats.org/submitData/" + platform;
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this.plugin = plugin;
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this.pluginVersion = pluginVersion;
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this.serverVersion = serverVersion;
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this.platform = platform;
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this.online = online;
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File configFile = new File(getJarFile().getParentFile(), "bStats" + File.separator + "config.yml");
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if (!configFile.exists()) {
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configFile.getParentFile().mkdirs();
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try {
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configFile.createNewFile();
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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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YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
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// Check if the config file exists
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if (!config.isSet("serverUuid")) {
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// Add default values
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config.addDefault("enabled", true);
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// Every server gets it's unique random id.
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config.addDefault("serverUuid", UUID.randomUUID().toString());
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// Should failed request be logged?
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config.addDefault("logFailedRequests", false);
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// Inform the server owners about bStats
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config.options().header(
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"bStats collects some data for plugin authors like how many servers are using their plugins.\n" +
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"To honor their work, you should not disable it.\n" +
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"This has nearly no effect on the server performance!\n" +
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"Check out https://bStats.org/ to learn more :)"
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).copyDefaults(true);
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try {
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config.save(configFile);
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} catch (IOException ignored) { }
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}
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// Load the data
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serverUUID = UUID.fromString(config.getString("serverUuid"));
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if (usedMetricsClass != null) {
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// Already an instance of this class
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linkMetrics(this);
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return;
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}
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this.usedMetricsClass = getFirstBStatsClass();
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if (usedMetricsClass == null) {
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// Failed to get first metrics class
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return;
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}
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if (usedMetricsClass == getClass()) {
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// We are the first! :)
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linkMetrics(this);
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enabled = true;
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} else {
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// We aren't the first so we link to the first metrics class
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try {
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usedMetricsClass.getMethod("linkMetrics", Object.class).invoke(null,this);
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} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
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if (logFailedRequests) {
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System.out.println("Failed to link to first metrics class " + usedMetricsClass.getName() + "!");
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}
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}
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}
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}
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public void start() {
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if (enabled) {
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startSubmitting();
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}
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}
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/**
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* Links an other metrics class with this class.
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* This method is called using Reflection.
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*
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* @param metrics An object of the metrics class to link.
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*/
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public static void linkMetrics(Object metrics) {
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if (!knownMetricsInstances.contains(metrics)) knownMetricsInstances.add(metrics);
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}
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/**
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* Gets the plugin specific data.
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* This method is called using Reflection.
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*
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* @return The plugin specific data.
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*/
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public JsonObject getPluginData() {
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JsonObject data = new JsonObject();
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data.addProperty("pluginName", plugin);
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data.addProperty("pluginVersion", pluginVersion);
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JsonArray customCharts = new JsonArray();
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data.add("customCharts", customCharts);
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return data;
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}
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private void startSubmitting() {
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this.timer = new Timer(true);
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timer.scheduleAtFixedRate(new TimerTask() {
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@Override
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public void run() {
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if (!enabled) {
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timer.cancel();
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return;
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}
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submitData();
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}
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// No 2m delay, as this is only started after the server is loaded
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}, 0, 1000*60*30);
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}
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@Override
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protected void finalize() throws Throwable {
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close();
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super.finalize();
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}
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@Override
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public void close() {
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enabled = false;
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if (timer != null) {
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timer.cancel();
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}
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}
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/**
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* Gets the server specific data.
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*
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* @return The server specific data.
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*/
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private JsonObject getServerData() {
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int playerAmount = getPlayerCount();
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int onlineMode = online ? 1 : 0;
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int managedServers = 1;
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// OS/Java specific data
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String javaVersion = System.getProperty("java.version");
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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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int coreCount = Runtime.getRuntime().availableProcessors();
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JsonObject data = new JsonObject();
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data.addProperty("serverUUID", serverUUID.toString());
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data.addProperty("playerAmount", playerAmount);
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data.addProperty("managedServers", managedServers);
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data.addProperty("onlineMode", onlineMode);
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data.addProperty(platform + "Version", serverVersion);
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data.addProperty("javaVersion", javaVersion);
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data.addProperty("osName", osName);
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data.addProperty("osArch", osArch);
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data.addProperty("osVersion", osVersion);
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data.addProperty("coreCount", coreCount);
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return data;
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}
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/**
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* Collects the data and sends it afterwards.
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*/
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private void submitData() {
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final JsonObject data = getServerData();
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final JsonArray pluginData = new JsonArray();
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// Search for all other bStats Metrics classes to get their plugin data
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for (Object metrics : knownMetricsInstances) {
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Object plugin = TaskManager.IMP.sync(new RunnableVal<Object>() {
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@Override
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public void run(Object value) {
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try {
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this.value = metrics.getClass().getMethod("getPluginData").invoke(metrics);
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} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException | NullPointerException | JsonSyntaxException ignored) {}
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}
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});
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if (plugin != null) {
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if (plugin instanceof JsonObject) {
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pluginData.add((JsonObject) plugin);
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} else {
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pluginData.add(gson.fromJson(plugin.toString(), JsonObject.class));
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}
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}
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}
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data.add("plugins", pluginData);
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try {
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// Send the data
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sendData(data);
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} catch (Exception e) {
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// Something went wrong! :(
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if (logFailedRequests) {
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System.err.println("Could not submit plugin stats!");
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}
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}
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}
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/**
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* Gets the first bStat Metrics class.
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*
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* @return The first bStats metrics class.
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*/
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private Class<?> getFirstBStatsClass() {
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Path configPath = getJarFile().toPath().getParent().resolve("bStats");
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configPath.toFile().mkdirs();
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File tempFile = new File(configPath.toFile(), "temp.txt");
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try {
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String className = readFile(tempFile);
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if (className != null) {
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try {
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// Let's check if a class with the given name exists.
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return Class.forName(className);
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} catch (ClassNotFoundException ignored) { }
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}
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writeFile(tempFile, getClass().getName());
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return getClass();
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} catch (IOException e) {
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if (logFailedRequests) {
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System.err.println("Failed to get first bStats class!");
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}
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return null;
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}
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}
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private File getJarFile() {
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try {
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URL url = BStats.class.getProtectionDomain().getCodeSource().getLocation();
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return new File(new URL(url.toURI().toString().split("\\!")[0].replaceAll("jar:file", "file")).toURI().getPath());
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} catch (MalformedURLException | URISyntaxException | SecurityException e) {
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return new File(".", "plugins");
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}
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}
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/**
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* Reads the first line of the file.
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*
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* @param file The file to read. Cannot be null.
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* @return The first line of the file or <code>null</code> if the file does not exist or is empty.
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* @throws IOException If something did not work :(
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*/
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private String readFile(File file) throws IOException {
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if (!file.exists()) {
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return null;
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}
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try (
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FileReader fileReader = new FileReader(file);
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BufferedReader bufferedReader = new BufferedReader(fileReader);
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) {
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return bufferedReader.readLine();
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}
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}
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/**
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* Writes a String to a file. It also adds a note for the user,
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*
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* @param file The file to write to. Cannot be null.
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* @param lines The lines to write.
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* @throws IOException If something did not work :(
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*/
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private void writeFile(File file, String... lines) throws IOException {
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if (!file.exists()) {
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file.createNewFile();
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}
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try (
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FileWriter fileWriter = new FileWriter(file);
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BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)
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) {
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for (String line : lines) {
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bufferedWriter.write(line);
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bufferedWriter.newLine();
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}
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}
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}
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/**
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* Sends the data to the bStats server.
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*
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* @param data The data to send.
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* @throws Exception If the request failed.
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*/
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private void sendData(JsonObject data) throws Exception {
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if (data == null) {
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throw new IllegalArgumentException("Data cannot be null");
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}
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HttpsURLConnection connection = (HttpsURLConnection) new URL(url).openConnection();
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// Compress the data to save bandwidth
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byte[] compressedData = compress(data.toString());
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// Add headers
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connection.setRequestMethod("POST");
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connection.addRequestProperty("Accept", "application/json");
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connection.addRequestProperty("Connection", "close");
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connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
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connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
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connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
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connection.setRequestProperty("User-Agent", "MC-Server/" + B_STATS_VERSION);
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// Send data
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connection.setDoOutput(true);
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DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream());
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outputStream.write(compressedData);
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outputStream.flush();
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outputStream.close();
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connection.getInputStream().close(); // We don't care about the response - Just send our data :)
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}
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/**
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* Gzips the given String.
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*
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* @param str The string to gzip.
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* @return The gzipped String.
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* @throws IOException If the compression failed.
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*/
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private byte[] compress(final String str) throws IOException {
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if (str == null) {
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return null;
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}
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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PGZIPOutputStream gzip = new PGZIPOutputStream(outputStream);
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gzip.write(str.getBytes("UTF-8"));
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gzip.close();
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return outputStream.toByteArray();
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}
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} |