package uk.tim740.skUtilities;
import org.bukkit.Bukkit;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.plugin.ServicePriority;
import org.bukkit.plugin.java.JavaPlugin;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import javax.net.ssl.HttpsURLConnection;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.net.URL;
import java.util.Timer;
import java.util.TimerTask;
import java.util.UUID;
import java.util.logging.Level;
import java.util.zip.GZIPOutputStream;
/**
* bStats collects some data for plugin authors.
*
* Check out https://bStats.org/ to learn more about bStats!
*/
public class MetricsLite {
static {
// Maven's Relocate is clever and changes strings, too. So we have to use this little "trick" ... :D
final String defaultPackage = new String(new byte[] { 'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's' });
final String examplePackage = new String(new byte[] { 'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e' });
// We want to make sure nobody just copy & pastes the example and use the wrong package names
if (MetricsLite.class.getPackage().getName().equals(defaultPackage) || MetricsLite.class.getPackage().getName().equals(examplePackage)) {
throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
}
}
// The version of this bStats class
public static final int B_STATS_VERSION = 1;
// The url to which the data is sent
private static final String URL = "https://bStats.org/submitData/bukkit";
// Should failed requests be logged?
private static boolean logFailedRequests;
// The uuid of the server
private static String serverUUID;
// The plugin
private final JavaPlugin plugin;
/**
* Class constructor.
*
* @param plugin The plugin which stats should be submitted.
*/
public MetricsLite(JavaPlugin plugin) {
if (plugin == null) {
throw new IllegalArgumentException("Plugin cannot be null!");
}
this.plugin = plugin;
// Get the config file
File bStatsFolder = new File(plugin.getDataFolder().getParentFile(), "bStats");
File configFile = new File(bStatsFolder, "config.yml");
YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
// Check if the config file exists
if (!config.isSet("serverUuid")) {
// Add default values
config.addDefault("enabled", true);
// Every server gets it's unique random id.
config.addDefault("serverUuid", UUID.randomUUID().toString());
// Should failed request be logged?
config.addDefault("logFailedRequests", false);
// Inform the server owners about bStats
config.options().header(
"bStats collects some data for plugin authors like how many servers are using their plugins.\n" +
"To honor their work, you should not disable it.\n" +
"This has nearly no effect on the server performance!\n" +
"Check out https://bStats.org/ to learn more :)"
).copyDefaults(true);
try {
config.save(configFile);
} catch (IOException ignored) { }
}
// Load the data
serverUUID = config.getString("serverUuid");
logFailedRequests = config.getBoolean("logFailedRequests", false);
if (config.getBoolean("enabled", true)) {
boolean found = false;
// Search for all other bStats Metrics classes to see if we are the first one
for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
try {
service.getField("B_STATS_VERSION"); // Our identifier :)
found = true; // We aren't the first
break;
} catch (NoSuchFieldException ignored) { }
}
// Register our service
Bukkit.getServicesManager().register(MetricsLite.class, this, plugin, ServicePriority.Normal);
if (!found) {
// We are the first!
startSubmitting();
}
}
}
/**
* Starts the Scheduler which submits our data every 30 minutes.
*/
private void startSubmitting() {
final Timer timer = new Timer(true); // We use a timer cause the Bukkit scheduler is affected by server lags
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
if (!plugin.isEnabled()) { // Plugin was disabled
timer.cancel();
return;
}
// Nevertheless we want our code to run in the Bukkit main thread, so we have to use the Bukkit scheduler
// Don't be afraid! The connection to the bStats server is still async, only the stats collection is sync ;)
Bukkit.getScheduler().runTask(plugin, new Runnable() {
@Override
public void run() {
submitData();
}
});
}
}, 1000*60*5, 1000*60*30);
// Submit the data every 30 minutes, first time after 5 minutes to give other plugins enough time to start
// WARNING: Changing the frequency has no effect but your plugin WILL be blocked/deleted!
// WARNING: Just don't do it!
}
/**
* Gets the plugin specific data.
* This method is called using Reflection.
*
* @return The plugin specific data.
*/
public JSONObject getPluginData() {
JSONObject data = new JSONObject();
String pluginName = plugin.getDescription().getName();
String pluginVersion = plugin.getDescription().getVersion();
data.put("pluginName", pluginName); // Append the name of the plugin
data.put("pluginVersion", pluginVersion); // Append the version of the plugin
JSONArray customCharts = new JSONArray();
data.put("customCharts", customCharts);
return data;
}
/**
* Gets the server specific data.
*
* @return The server specific data.
*/
private JSONObject getServerData() {
// Minecraft specific data
int playerAmount = Bukkit.getOnlinePlayers().size();
int onlineMode = Bukkit.getOnlineMode() ? 1 : 0;
String bukkitVersion = Bukkit.getVersion();
bukkitVersion = bukkitVersion.substring(bukkitVersion.indexOf("MC: ") + 4, bukkitVersion.length() - 1);
// OS/Java specific data
String javaVersion = System.getProperty("java.version");
String osName = System.getProperty("os.name");
String osArch = System.getProperty("os.arch");
String osVersion = System.getProperty("os.version");
int coreCount = Runtime.getRuntime().availableProcessors();
JSONObject data = new JSONObject();
data.put("serverUUID", serverUUID);
data.put("playerAmount", playerAmount);
data.put("onlineMode", onlineMode);
data.put("bukkitVersion", bukkitVersion);
data.put("javaVersion", javaVersion);
data.put("osName", osName);
data.put("osArch", osArch);
data.put("osVersion", osVersion);
data.put("coreCount", coreCount);
return data;
}
/**
* Collects the data and sends it afterwards.
*/
private void submitData() {
final JSONObject data = getServerData();
JSONArray pluginData = new JSONArray();
// Search for all other bStats Metrics classes to get their plugin data
for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
try {
service.getField("B_STATS_VERSION"); // Our identifier :)
} catch (NoSuchFieldException ignored) {
continue; // Continue "searching"
}
// Found one!
try {
pluginData.add(service.getMethod("getPluginData").invoke(Bukkit.getServicesManager().load(service)));
} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) { }
}
data.put("plugins", pluginData);
// Create a new thread for the connection to the bStats server
new Thread(new Runnable() {
@Override
public void run() {
try {
// Send the data
sendData(data);
} catch (Exception e) {
// Something went wrong! :(
if (logFailedRequests) {
plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats of " + plugin.getName(), e);
}
}
}
}).start();
}
/**
* Sends the data to the bStats server.
*
* @param data The data to send.
* @throws Exception If the request failed.
*/
private static void sendData(JSONObject data) throws Exception {
if (data == null) {
throw new IllegalArgumentException("Data cannot be null!");
}
if (Bukkit.isPrimaryThread()) {
throw new IllegalAccessException("This method must not be called from the main thread!");
}
HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
// Compress the data to save bandwidth
byte[] compressedData = compress(data.toString());
// Add headers
connection.setRequestMethod("POST");
connection.addRequestProperty("Accept", "application/json");
connection.addRequestProperty("Connection", "close");
connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
connection.setRequestProperty("User-Agent", "MC-Server/" + B_STATS_VERSION);
// Send data
connection.setDoOutput(true);
DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream());
outputStream.write(compressedData);
outputStream.flush();
outputStream.close();
connection.getInputStream().close(); // We don't care about the response - Just send our data :)
}
/**
* Gzips the given String.
*
* @param str The string to gzip.
* @return The gzipped String.
* @throws IOException If the compression failed.
*/
private static byte[] compress(final String str) throws IOException {
if (str == null) {
return null;
}
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
GZIPOutputStream gzip = new GZIPOutputStream(outputStream);
gzip.write(str.getBytes("UTF-8"));
gzip.close();
return outputStream.toByteArray();
}
}
