Add bstats

src/main/java/com/drtshock/playervaults/Metrics.java

@@ -0,0 +1,730 @@
+package com.drtshock.playervaults;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonPrimitive;
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.RegisteredServiceProvider;
+import org.bukkit.plugin.ServicePriority;
+
+import javax.net.ssl.HttpsURLConnection;
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.UUID;
+import java.util.concurrent.Callable;
+import java.util.logging.Level;
+import java.util.zip.GZIPOutputStream;
+
+// CONTAINS CUSTOM MODIFICATIONS
+
+/**
+ * bStats collects some data for plugin authors.
+ * <p>
+ * Check out https://bStats.org/ to learn more about bStats!
+ */
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class Metrics {
+
+    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[]{'c', 'o', 'm', '.', 'd', 'r', 't', 's', 'h', 'o', 'c', 'k', '.', 'p', 'l', 'a', 'y', 'e', 'r', 'v', 'a', 'u', 'l', 't', 's'});
+        if (!Metrics.class.getPackage().getName().equals(defaultPackage)) {
+            throw new IllegalStateException("You done screwed up! Go grab the right file to copy from bstats.org");
+        }
+    }
+
+    // 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";
+
+    // Is bStats enabled on this server?
+    private boolean enabled;
+
+    // Should failed requests be logged?
+    private static boolean logFailedRequests;
+
+    // Should the sent data be logged?
+    private static boolean logSentData;
+
+    // Should the response text be logged?
+    private static boolean logResponseStatusText;
+
+    // The uuid of the server
+    private static String serverUUID;
+
+    // The plugin
+    private final Plugin plugin;
+
+    // The plugin id
+    private final int pluginId;
+
+    // A list with all custom charts
+    private final List<CustomChart> charts = new ArrayList<>();
+
+    /**
+     * Class constructor.
+     *
+     * @param plugin The plugin which stats should be submitted.
+     * @param pluginId The id of the plugin.
+     * It can be found at <a href="https://bstats.org/what-is-my-plugin-id">What is my plugin id?</a>
+     */
+    public Metrics(Plugin plugin, int pluginId) {
+        if (plugin == null) {
+            throw new IllegalArgumentException("Plugin cannot be null!");
+        }
+        this.plugin = plugin;
+        this.pluginId = pluginId;
+
+        // 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);
+            // Should the sent data be logged?
+            config.addDefault("logSentData", false);
+            // Should the response text be logged?
+            config.addDefault("logResponseStatusText", 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
+        enabled = config.getBoolean("enabled", true);
+        serverUUID = config.getString("serverUuid");
+        logFailedRequests = config.getBoolean("logFailedRequests", false);
+        logSentData = config.getBoolean("logSentData", false);
+        logResponseStatusText = config.getBoolean("logResponseStatusText", false);
+
+        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(Metrics.class, this, plugin, ServicePriority.Normal);
+        if (!found) {
+            // We are the first!
+            startSubmitting();
+        }
+    }
+
+    /**
+     * Checks if bStats is enabled.
+     *
+     * @return Whether bStats is enabled or not.
+     */
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    /**
+     * Adds a custom chart.
+     *
+     * @param chart The chart to add.
+     */
+    public void addCustomChart(CustomChart chart) {
+        if (chart == null) {
+            throw new IllegalArgumentException("Chart cannot be null!");
+        }
+        charts.add(chart);
+    }
+
+    /**
+     * 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, () -> 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 = "PlayerVaultsX";
+        String pluginVersion = plugin.getDescription().getVersion();
+
+        data.addProperty("pluginName", pluginName); // Append the name of the plugin
+        data.addProperty("id", pluginId); // Append the id of the plugin
+        data.addProperty("pluginVersion", pluginVersion); // Append the version of the plugin
+        JsonArray customCharts = new JsonArray();
+        for (CustomChart customChart : charts) {
+            // Add the data of the custom charts
+            JsonObject chart = customChart.getRequestJsonObject();
+            if (chart == null) { // If the chart is null, we skip it
+                continue;
+            }
+            customCharts.add(chart);
+        }
+        data.add("customCharts", customCharts);
+
+        return data;
+    }
+
+    /**
+     * Gets the server specific data.
+     *
+     * @return The server specific data.
+     */
+    private JsonObject getServerData() {
+        // Minecraft specific data
+        int playerAmount;
+        try {
+            // Around MC 1.8 the return type was changed to a collection from an array,
+            // This fixes java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
+            Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
+            playerAmount = onlinePlayersMethod.getReturnType().equals(Collection.class)
+                    ? ((Collection<?>) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
+                    : ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
+        } catch (Exception e) {
+            playerAmount = Bukkit.getOnlinePlayers().size(); // Just use the new method if the Reflection failed
+        }
+        int onlineMode = Bukkit.getOnlineMode() ? 1 : 0;
+        String bukkitVersion = Bukkit.getVersion();
+        String bukkitName = Bukkit.getName();
+
+        // 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.addProperty("serverUUID", serverUUID);
+
+        data.addProperty("playerAmount", playerAmount);
+        data.addProperty("onlineMode", onlineMode);
+        data.addProperty("bukkitVersion", bukkitVersion);
+        data.addProperty("bukkitName", bukkitName);
+
+        data.addProperty("javaVersion", javaVersion);
+        data.addProperty("osName", osName);
+        data.addProperty("osArch", osArch);
+        data.addProperty("osVersion", osVersion);
+        data.addProperty("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 :)
+
+                for (RegisteredServiceProvider<?> provider : Bukkit.getServicesManager().getRegistrations(service)) {
+                    try {
+                        Object plugin = provider.getService().getMethod("getPluginData").invoke(provider.getProvider());
+                        if (plugin instanceof JsonObject) {
+                            pluginData.add((JsonObject) plugin);
+                        } else { // old bstats version compatibility
+                            try {
+                                Class<?> jsonObjectJsonSimple = Class.forName("org.json.simple.JSONObject");
+                                if (plugin.getClass().isAssignableFrom(jsonObjectJsonSimple)) {
+                                    Method jsonStringGetter = jsonObjectJsonSimple.getDeclaredMethod("toJSONString");
+                                    jsonStringGetter.setAccessible(true);
+                                    String jsonString = (String) jsonStringGetter.invoke(plugin);
+                                    JsonObject object = new JsonParser().parse(jsonString).getAsJsonObject();
+                                    pluginData.add(object);
+                                }
+                            } catch (ClassNotFoundException e) {
+                                // minecraft version 1.14+
+                                if (logFailedRequests) {
+                                    this.plugin.getLogger().log(Level.SEVERE, "Encountered unexpected exception", e);
+                                }
+                            }
+                        }
+                    } catch (NullPointerException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) {
+                    }
+                }
+            } catch (NoSuchFieldException ignored) {
+            }
+        }
+
+        data.add("plugins", pluginData);
+
+        // Create a new thread for the connection to the bStats server
+        new Thread(() -> {
+            try {
+                // Send the data
+                sendData(plugin, 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 plugin Any plugin. It's just used to get a logger instance.
+     * @param data The data to send.
+     * @throws Exception If the request failed.
+     */
+    private static void sendData(Plugin plugin, 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!");
+        }
+        if (logSentData) {
+            plugin.getLogger().info("Sending data to bStats: " + data);
+        }
+        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);
+        try (DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
+            outputStream.write(compressedData);
+        }
+
+        StringBuilder builder = new StringBuilder();
+        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                builder.append(line);
+            }
+        }
+
+        if (logResponseStatusText) {
+            plugin.getLogger().info("Sent data to bStats and received response: " + builder);
+        }
+    }
+
+    /**
+     * 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();
+        try (GZIPOutputStream gzip = new GZIPOutputStream(outputStream)) {
+            gzip.write(str.getBytes(StandardCharsets.UTF_8));
+        }
+        return outputStream.toByteArray();
+    }
+
+    /**
+     * Represents a custom chart.
+     */
+    public static abstract class CustomChart {
+
+        // The id of the chart
+        final String chartId;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         */
+        CustomChart(String chartId) {
+            if (chartId == null || chartId.isEmpty()) {
+                throw new IllegalArgumentException("ChartId cannot be null or empty!");
+            }
+            this.chartId = chartId;
+        }
+
+        private JsonObject getRequestJsonObject() {
+            JsonObject chart = new JsonObject();
+            chart.addProperty("chartId", chartId);
+            try {
+                JsonObject data = getChartData();
+                if (data == null) {
+                    // If the data is null we don't send the chart.
+                    return null;
+                }
+                chart.add("data", data);
+            } catch (Throwable t) {
+                if (logFailedRequests) {
+                    Bukkit.getLogger().log(Level.WARNING, "Failed to get data for custom chart with id " + chartId, t);
+                }
+                return null;
+            }
+            return chart;
+        }
+
+        protected abstract JsonObject getChartData() throws Exception;
+
+    }
+
+    /**
+     * Represents a custom simple pie.
+     */
+    public static class SimplePie extends CustomChart {
+
+        private final Callable<String> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimplePie(String chartId, Callable<String> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            String value = callable.call();
+            if (value == null || value.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            data.addProperty("value", value);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom advanced pie.
+     */
+    public static class AdvancedPie extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedPie(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                values.addProperty(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom drilldown pie.
+     */
+    public static class DrilldownPie extends CustomChart {
+
+        private final Callable<Map<String, Map<String, Integer>>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public DrilldownPie(String chartId, Callable<Map<String, Map<String, Integer>>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        public JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Map<String, Integer>> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean reallyAllSkipped = true;
+            for (Map.Entry<String, Map<String, Integer>> entryValues : map.entrySet()) {
+                JsonObject value = new JsonObject();
+                boolean allSkipped = true;
+                for (Map.Entry<String, Integer> valueEntry : map.get(entryValues.getKey()).entrySet()) {
+                    value.addProperty(valueEntry.getKey(), valueEntry.getValue());
+                    allSkipped = false;
+                }
+                if (!allSkipped) {
+                    reallyAllSkipped = false;
+                    values.add(entryValues.getKey(), value);
+                }
+            }
+            if (reallyAllSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom single line chart.
+     */
+    public static class SingleLineChart extends CustomChart {
+
+        private final Callable<Integer> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SingleLineChart(String chartId, Callable<Integer> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            int value = callable.call();
+            if (value == 0) {
+                // Null = skip the chart
+                return null;
+            }
+            data.addProperty("value", value);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom multi line chart.
+     */
+    public static class MultiLineChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public MultiLineChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                values.addProperty(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom simple bar chart.
+     */
+    public static class SimpleBarChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimpleBarChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                JsonArray categoryValues = new JsonArray();
+                categoryValues.add(new JsonPrimitive(entry.getValue()));
+                values.add(entry.getKey(), categoryValues);
+            }
+            data.add("values", values);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom advanced bar chart.
+     */
+    public static class AdvancedBarChart extends CustomChart {
+
+        private final Callable<Map<String, int[]>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedBarChart(String chartId, Callable<Map<String, int[]>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, int[]> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, int[]> entry : map.entrySet()) {
+                if (entry.getValue().length == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                JsonArray categoryValues = new JsonArray();
+                for (int categoryValue : entry.getValue()) {
+                    categoryValues.add(new JsonPrimitive(categoryValue));
+                }
+                values.add(entry.getKey(), categoryValues);
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+}

src/main/java/com/drtshock/playervaults/PlayerVaults.java

@@ -35,6 +35,7 @@ import com.drtshock.playervaults.vaultmanagement.UUIDVaultManager;
 import com.drtshock.playervaults.vaultmanagement.VaultManager;
 import com.drtshock.playervaults.vaultmanagement.VaultViewInfo;
 import net.milkbowl.vault.economy.Economy;
+import net.milkbowl.vault.permission.Permission;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
@@ -45,6 +46,7 @@ import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.RegisteredServiceProvider;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitRunnable;
@@ -53,8 +55,11 @@ import java.io.File;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.concurrent.Callable;
+import java.util.function.Supplier;
 import java.util.logging.Level;
 
 public class PlayerVaults extends JavaPlugin {
@@ -77,6 +82,7 @@ public class PlayerVaults extends JavaPlugin {
     private File vaultData;
     private String _versionString;
     private int maxVaultAmountPermTest;
+    private Metrics metrics;
 
     public static PlayerVaults getInstance() {
         return instance;
@@ -143,9 +149,103 @@ public class PlayerVaults extends JavaPlugin {
             }
         }.runTaskTimer(this, 20, 20);
 
+        this.metrics = new Metrics(this, 6905);
+        Plugin vault = getServer().getPluginManager().getPlugin("Vault");
+        this.metricsDrillPie("vault", () -> this.metricsPluginInfo(vault));
+        if (vault != null) {
+            this.metricsDrillPie("vault_econ", () -> {
+                Map<String, Map<String, Integer>> map = new HashMap<>();
+                Map<String, Integer> entry = new HashMap<>();
+                entry.put(economy == null ? "none" : economy.getName(), 1);
+                map.put(isEconomyEnabled() ? "enabled" : "disabled", entry);
+                return map;
+            });
+            if (isEconomyEnabled()) {
+                String name = economy.getName();
+                if (name.equals("Essentials Economy")) {
+                    name = "Essentials";
+                }
+                Plugin plugin = getServer().getPluginManager().getPlugin(name);
+                if (plugin != null) {
+                    this.metricsDrillPie("vault_econ_plugins", () -> {
+                        Map<String, Map<String, Integer>> map = new HashMap<>();
+                        Map<String, Integer> entry = new HashMap<>();
+                        entry.put(plugin.getDescription().getVersion(), 1);
+                        map.put(plugin.getName(), entry);
+                        return map;
+                    });
+                }
+            }
+        }
+
+        if (vault != null) {
+            RegisteredServiceProvider<Permission> provider = getServer().getServicesManager().getRegistration(Permission.class);
+            if (provider != null) {
+                Permission perm = provider.getProvider();
+                String name = perm.getName();
+                Plugin plugin = getServer().getPluginManager().getPlugin(name);
+                final String version;
+                if (plugin == null) {
+                    version = "unknown";
+                } else {
+                    version = plugin.getDescription().getVersion();
+                }
+                this.metricsDrillPie("vault_perms", () -> {
+                    Map<String, Map<String, Integer>> map = new HashMap<>();
+                    Map<String, Integer> entry = new HashMap<>();
+                    entry.put(version, 1);
+                    map.put(name, entry);
+                    return map;
+                });
+            }
+        }
+
+        this.metricsSimplePie("signs", () -> getConfig().getBoolean("signs-enabled") ? "enabled" : "disabled");
+        this.metricsSimplePie("cleanup", () -> getConfig().getBoolean("cleanup.enable") ? "enabled" : "disabled");
+        this.metricsSimplePie("language", () -> getConfig().getString("language", "english"));
+
+        this.metricsDrillPie("block_items", () -> {
+            Map<String, Map<String, Integer>> map = new HashMap<>();
+            Map<String, Integer> entry = new HashMap<>();
+            if (getConfig().getBoolean("blockitems")) {
+                for (Material material : blockedMats) {
+                    entry.put(material.toString(), 1);
+                }
+            }
+            if (entry.isEmpty()) {
+                entry.put("none", 1);
+            }
+            map.put(getConfig().getBoolean("blockitems") ? "enabled" : "disabled", entry);
+            return map;
+        });
+
         debug("enable done", System.currentTimeMillis());
     }
 
+    private void metricsLine(String name, Callable<Integer> callable) {
+        this.metrics.addCustomChart(new Metrics.SingleLineChart(name, callable));
+    }
+
+    private void metricsDrillPie(String name, Callable<Map<String, Map<String, Integer>>> callable) {
+        this.metrics.addCustomChart(new Metrics.DrilldownPie(name, callable));
+    }
+
+    private void metricsSimplePie(String name, Callable<String> callable) {
+        this.metrics.addCustomChart(new Metrics.SimplePie(name, callable));
+    }
+
+    private Map<String, Map<String, Integer>> metricsPluginInfo(Plugin plugin) {
+        return this.metricsInfo(plugin, () -> plugin.getDescription().getVersion());
+    }
+
+    private Map<String, Map<String, Integer>> metricsInfo(Object plugin, Supplier<String> versionGetter) {
+        Map<String, Map<String, Integer>> map = new HashMap<>();
+        Map<String, Integer> entry = new HashMap<>();
+        entry.put(plugin == null ? "nope" : versionGetter.get(), 1);
+        map.put(plugin == null ? "absent" : "present", entry);
+        return map;
+    }
+
     @Override
     public void onDisable() {
         for (Player player : Bukkit.getOnlinePlayers()) {
@@ -275,9 +375,9 @@ public class PlayerVaults extends JavaPlugin {
     /**
      * Set an object in the config.yml
      *
-     * @param path   The path in the config.
+     * @param path The path in the config.
      * @param object What to be saved.
-     * @param conf   Where to save the object.
+     * @param conf Where to save the object.
      */
     public <T> void setInConfig(String path, T object, YamlConfiguration conf) {
         conf.set(path, object);