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PaperMC/CraftBukkit-Patches/0017-Metrics.patch
Zach Brown 7b0c576798 Restructure PaperSpigot as a new set of modules 
Allows us much greater control over the Spigot portion of the code
and makes us more "proper"
Credit to @Dmck2b for originally passing the idea along a while back
2014-07-21 15:46:54 -05:00

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From 9864e278c538538405df7323063d4e4a0963ff15 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sat, 23 Feb 2013 08:58:35 +1100
Subject: [PATCH] Metrics
diff --git a/src/main/java/org/spigotmc/Metrics.java b/src/main/java/org/spigotmc/Metrics.java
new file mode 100644
index 0000000..d9c3b63
--- /dev/null
+++ b/src/main/java/org/spigotmc/Metrics.java
@@ -0,0 +1,645 @@
+/*
+ * Copyright 2011-2013 Tyler Blair. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and contributors and should not be interpreted as representing official policies,
+ * either expressed or implied, of anybody else.
+ */
+package org.spigotmc;
+
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginDescriptionFile;
+import org.bukkit.scheduler.BukkitTask;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.UnsupportedEncodingException;
+import java.net.Proxy;
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLEncoder;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.Set;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import net.minecraft.server.MinecraftServer;
+
+/**
+ * <p> The metrics class obtains data about a plugin and submits statistics about it to the metrics backend. </p> <p>
+ * Public methods provided by this class: </p>
+ * <code>
+ * Graph createGraph(String name); <br/>
+ * void addCustomData(BukkitMetrics.Plotter plotter); <br/>
+ * void start(); <br/>
+ * </code>
+ */
+public class Metrics {
+
+ /**
+ * The current revision number
+ */
+ private final static int REVISION = 6;
+ /**
+ * The base url of the metrics domain
+ */
+ private static final String BASE_URL = "http://mcstats.org";
+ /**
+ * The url used to report a server's status
+ */
+ private static final String REPORT_URL = "/report/%s";
+ /**
+ * The separator to use for custom data. This MUST NOT change unless you are hosting your own version of metrics and
+ * want to change it.
+ */
+ private static final String CUSTOM_DATA_SEPARATOR = "~~";
+ /**
+ * Interval of time to ping (in minutes)
+ */
+ private static final int PING_INTERVAL = 10;
+ /**
+ * All of the custom graphs to submit to metrics
+ */
+ private final Set<Graph> graphs = Collections.synchronizedSet(new HashSet<Graph>());
+ /**
+ * The default graph, used for addCustomData when you don't want a specific graph
+ */
+ private final Graph defaultGraph = new Graph("Default");
+ /**
+ * The plugin configuration file
+ */
+ private final YamlConfiguration configuration;
+ /**
+ * The plugin configuration file
+ */
+ private final File configurationFile;
+ /**
+ * Unique server id
+ */
+ private final String guid;
+ /**
+ * Debug mode
+ */
+ private final boolean debug;
+ /**
+ * Lock for synchronization
+ */
+ private final Object optOutLock = new Object();
+ /**
+ * The scheduled task
+ */
+ private volatile Timer task = null;
+
+ public Metrics() throws IOException {
+ // load the config
+ configurationFile = getConfigFile();
+ configuration = YamlConfiguration.loadConfiguration(configurationFile);
+
+ // add some defaults
+ configuration.addDefault("opt-out", false);
+ configuration.addDefault("guid", UUID.randomUUID().toString());
+ configuration.addDefault("debug", false);
+
+ // Do we need to create the file?
+ if (configuration.get("guid", null) == null) {
+ configuration.options().header("http://mcstats.org").copyDefaults(true);
+ configuration.save(configurationFile);
+ }
+
+ // Load the guid then
+ guid = configuration.getString("guid");
+ debug = configuration.getBoolean("debug", false);
+ }
+
+ /**
+ * Construct and create a Graph that can be used to separate specific plotters to their own graphs on the metrics
+ * website. Plotters can be added to the graph object returned.
+ *
+ * @param name The name of the graph
+ * @return Graph object created. Will never return NULL under normal circumstances unless bad parameters are given
+ */
+ public Graph createGraph(final String name) {
+ if (name == null) {
+ throw new IllegalArgumentException("Graph name cannot be null");
+ }
+
+ // Construct the graph object
+ final Graph graph = new Graph(name);
+
+ // Now we can add our graph
+ graphs.add(graph);
+
+ // and return back
+ return graph;
+ }
+
+ /**
+ * Add a Graph object to BukkitMetrics that represents data for the plugin that should be sent to the backend
+ *
+ * @param graph The name of the graph
+ */
+ public void addGraph(final Graph graph) {
+ if (graph == null) {
+ throw new IllegalArgumentException("Graph cannot be null");
+ }
+
+ graphs.add(graph);
+ }
+
+ /**
+ * Adds a custom data plotter to the default graph
+ *
+ * @param plotter The plotter to use to plot custom data
+ */
+ public void addCustomData(final Plotter plotter) {
+ if (plotter == null) {
+ throw new IllegalArgumentException("Plotter cannot be null");
+ }
+
+ // Add the plotter to the graph o/
+ defaultGraph.addPlotter(plotter);
+
+ // Ensure the default graph is included in the submitted graphs
+ graphs.add(defaultGraph);
+ }
+
+ /**
+ * Start measuring statistics. This will immediately create an async repeating task as the plugin and send the
+ * initial data to the metrics backend, and then after that it will post in increments of PING_INTERVAL * 1200
+ * ticks.
+ *
+ * @return True if statistics measuring is running, otherwise false.
+ */
+ public boolean start() {
+ synchronized (optOutLock) {
+ // Did we opt out?
+ if (isOptOut()) {
+ return false;
+ }
+
+ // Is metrics already running?
+ if (task != null) {
+ return true;
+ }
+
+ // Begin hitting the server with glorious data
+ task = new Timer("Spigot Metrics Thread", true);
+
+ task.scheduleAtFixedRate(new TimerTask() {
+ private boolean firstPost = true;
+
+ public void run() {
+ try {
+ // This has to be synchronized or it can collide with the disable method.
+ synchronized (optOutLock) {
+ // Disable Task, if it is running and the server owner decided to opt-out
+ if (isOptOut() && task != null) {
+ task.cancel();
+ task = null;
+ // Tell all plotters to stop gathering information.
+ for (Graph graph : graphs) {
+ graph.onOptOut();
+ }
+ }
+ }
+
+ // We use the inverse of firstPost because if it is the first time we are posting,
+ // it is not a interval ping, so it evaluates to FALSE
+ // Each time thereafter it will evaluate to TRUE, i.e PING!
+ postPlugin(!firstPost);
+
+ // After the first post we set firstPost to false
+ // Each post thereafter will be a ping
+ firstPost = false;
+ } catch (IOException e) {
+ if (debug) {
+ Bukkit.getLogger().log(Level.INFO, "[Metrics] " + e.getMessage());
+ }
+ }
+ }
+ }, 0, TimeUnit.MINUTES.toMillis(PING_INTERVAL));
+
+ return true;
+ }
+ }
+
+ /**
+ * Has the server owner denied plugin metrics?
+ *
+ * @return true if metrics should be opted out of it
+ */
+ public boolean isOptOut() {
+ synchronized (optOutLock) {
+ try {
+ // Reload the metrics file
+ configuration.load(getConfigFile());
+ } catch (IOException ex) {
+ if (debug) {
+ Bukkit.getLogger().log(Level.INFO, "[Metrics] " + ex.getMessage());
+ }
+ return true;
+ } catch (InvalidConfigurationException ex) {
+ if (debug) {
+ Bukkit.getLogger().log(Level.INFO, "[Metrics] " + ex.getMessage());
+ }
+ return true;
+ }
+ return configuration.getBoolean("opt-out", false);
+ }
+ }
+
+ /**
+ * Enables metrics for the server by setting "opt-out" to false in the config file and starting the metrics task.
+ *
+ * @throws java.io.IOException
+ */
+ public void enable() throws IOException {
+ // This has to be synchronized or it can collide with the check in the task.
+ synchronized (optOutLock) {
+ // Check if the server owner has already set opt-out, if not, set it.
+ if (isOptOut()) {
+ configuration.set("opt-out", false);
+ configuration.save(configurationFile);
+ }
+
+ // Enable Task, if it is not running
+ if (task == null) {
+ start();
+ }
+ }
+ }
+
+ /**
+ * Disables metrics for the server by setting "opt-out" to true in the config file and canceling the metrics task.
+ *
+ * @throws java.io.IOException
+ */
+ public void disable() throws IOException {
+ // This has to be synchronized or it can collide with the check in the task.
+ synchronized (optOutLock) {
+ // Check if the server owner has already set opt-out, if not, set it.
+ if (!isOptOut()) {
+ configuration.set("opt-out", true);
+ configuration.save(configurationFile);
+ }
+
+ // Disable Task, if it is running
+ if (task != null) {
+ task.cancel();
+ task = null;
+ }
+ }
+ }
+
+ /**
+ * Gets the File object of the config file that should be used to store data such as the GUID and opt-out status
+ *
+ * @return the File object for the config file
+ */
+ public File getConfigFile() {
+ // I believe the easiest way to get the base folder (e.g craftbukkit set via -P) for plugins to use
+ // is to abuse the plugin object we already have
+ // plugin.getDataFolder() => base/plugins/PluginA/
+ // pluginsFolder => base/plugins/
+ // The base is not necessarily relative to the startup directory.
+ // File pluginsFolder = plugin.getDataFolder().getParentFile();
+
+ // return => base/plugins/PluginMetrics/config.yml
+ return new File(new File((File) MinecraftServer.getServer().options.valueOf("plugins"), "PluginMetrics"), "config.yml");
+ }
+
+ /**
+ * Generic method that posts a plugin to the metrics website
+ */
+ private void postPlugin(final boolean isPing) throws IOException {
+ // Server software specific section
+ String pluginName = "Spigot";
+ boolean onlineMode = Bukkit.getServer().getOnlineMode(); // TRUE if online mode is enabled
+ String pluginVersion = (Metrics.class.getPackage().getImplementationVersion() != null) ? Metrics.class.getPackage().getImplementationVersion() : "unknown";
+ String serverVersion = Bukkit.getVersion();
+ int playersOnline = Bukkit.getServer().getOnlinePlayers().size();
+
+ // END server software specific section -- all code below does not use any code outside of this class / Java
+
+ // Construct the post data
+ final StringBuilder data = new StringBuilder();
+
+ // The plugin's description file containg all of the plugin data such as name, version, author, etc
+ data.append(encode("guid")).append('=').append(encode(guid));
+ encodeDataPair(data, "version", pluginVersion);
+ encodeDataPair(data, "server", serverVersion);
+ encodeDataPair(data, "players", Integer.toString(playersOnline));
+ encodeDataPair(data, "revision", String.valueOf(REVISION));
+
+ // New data as of R6
+ String osname = System.getProperty("os.name");
+ String osarch = System.getProperty("os.arch");
+ String osversion = System.getProperty("os.version");
+ String java_version = System.getProperty("java.version");
+ int coreCount = Runtime.getRuntime().availableProcessors();
+
+ // normalize os arch .. amd64 -> x86_64
+ if (osarch.equals("amd64")) {
+ osarch = "x86_64";
+ }
+
+ encodeDataPair(data, "osname", osname);
+ encodeDataPair(data, "osarch", osarch);
+ encodeDataPair(data, "osversion", osversion);
+ encodeDataPair(data, "cores", Integer.toString(coreCount));
+ encodeDataPair(data, "online-mode", Boolean.toString(onlineMode));
+ encodeDataPair(data, "java_version", java_version);
+
+ // If we're pinging, append it
+ if (isPing) {
+ encodeDataPair(data, "ping", "true");
+ }
+
+ // Acquire a lock on the graphs, which lets us make the assumption we also lock everything
+ // inside of the graph (e.g plotters)
+ synchronized (graphs) {
+ final Iterator<Graph> iter = graphs.iterator();
+
+ while (iter.hasNext()) {
+ final Graph graph = iter.next();
+
+ for (Plotter plotter : graph.getPlotters()) {
+ // The key name to send to the metrics server
+ // The format is C-GRAPHNAME-PLOTTERNAME where separator - is defined at the top
+ // Legacy (R4) submitters use the format Custom%s, or CustomPLOTTERNAME
+ final String key = String.format("C%s%s%s%s", CUSTOM_DATA_SEPARATOR, graph.getName(), CUSTOM_DATA_SEPARATOR, plotter.getColumnName());
+
+ // The value to send, which for the foreseeable future is just the string
+ // value of plotter.getValue()
+ final String value = Integer.toString(plotter.getValue());
+
+ // Add it to the http post data :)
+ encodeDataPair(data, key, value);
+ }
+ }
+ }
+
+ // Create the url
+ URL url = new URL(BASE_URL + String.format(REPORT_URL, encode(pluginName)));
+
+ // Connect to the website
+ URLConnection connection;
+
+ // Mineshafter creates a socks proxy, so we can safely bypass it
+ // It does not reroute POST requests so we need to go around it
+ if (isMineshafterPresent()) {
+ connection = url.openConnection(Proxy.NO_PROXY);
+ } else {
+ connection = url.openConnection();
+ }
+
+ connection.setDoOutput(true);
+
+ // Write the data
+ final OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
+ writer.write(data.toString());
+ writer.flush();
+
+ // Now read the response
+ final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+ final String response = reader.readLine();
+
+ // close resources
+ writer.close();
+ reader.close();
+
+ if (response == null || response.startsWith("ERR")) {
+ throw new IOException(response); //Throw the exception
+ } else {
+ // Is this the first update this hour?
+ if (response.contains("OK This is your first update this hour")) {
+ synchronized (graphs) {
+ final Iterator<Graph> iter = graphs.iterator();
+
+ while (iter.hasNext()) {
+ final Graph graph = iter.next();
+
+ for (Plotter plotter : graph.getPlotters()) {
+ plotter.reset();
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Check if mineshafter is present. If it is, we need to bypass it to send POST requests
+ *
+ * @return true if mineshafter is installed on the server
+ */
+ private boolean isMineshafterPresent() {
+ try {
+ Class.forName("mineshafter.MineServer");
+ return true;
+ } catch (Exception e) {
+ return false;
+ }
+ }
+
+ /**
+ * <p>Encode a key/value data pair to be used in a HTTP post request. This INCLUDES a & so the first key/value pair
+ * MUST be included manually, e.g:</p>
+ * <code>
+ * StringBuffer data = new StringBuffer();
+ * data.append(encode("guid")).append('=').append(encode(guid));
+ * encodeDataPair(data, "version", description.getVersion());
+ * </code>
+ *
+ * @param buffer the stringbuilder to append the data pair onto
+ * @param key the key value
+ * @param value the value
+ */
+ private static void encodeDataPair(final StringBuilder buffer, final String key, final String value) throws UnsupportedEncodingException {
+ buffer.append('&').append(encode(key)).append('=').append(encode(value));
+ }
+
+ /**
+ * Encode text as UTF-8
+ *
+ * @param text the text to encode
+ * @return the encoded text, as UTF-8
+ */
+ private static String encode(final String text) throws UnsupportedEncodingException {
+ return URLEncoder.encode(text, "UTF-8");
+ }
+
+ /**
+ * Represents a custom graph on the website
+ */
+ public static class Graph {
+
+ /**
+ * The graph's name, alphanumeric and spaces only :) If it does not comply to the above when submitted, it is
+ * rejected
+ */
+ private final String name;
+ /**
+ * The set of plotters that are contained within this graph
+ */
+ private final Set<Plotter> plotters = new LinkedHashSet<Plotter>();
+
+ private Graph(final String name) {
+ this.name = name;
+ }
+
+ /**
+ * Gets the graph's name
+ *
+ * @return the Graph's name
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * Add a plotter to the graph, which will be used to plot entries
+ *
+ * @param plotter the plotter to add to the graph
+ */
+ public void addPlotter(final Plotter plotter) {
+ plotters.add(plotter);
+ }
+
+ /**
+ * Remove a plotter from the graph
+ *
+ * @param plotter the plotter to remove from the graph
+ */
+ public void removePlotter(final Plotter plotter) {
+ plotters.remove(plotter);
+ }
+
+ /**
+ * Gets an <b>unmodifiable</b> set of the plotter objects in the graph
+ *
+ * @return an unmodifiable {@link java.util.Set} of the plotter objects
+ */
+ public Set<Plotter> getPlotters() {
+ return Collections.unmodifiableSet(plotters);
+ }
+
+ @Override
+ public int hashCode() {
+ return name.hashCode();
+ }
+
+ @Override
+ public boolean equals(final Object object) {
+ if (!(object instanceof Graph)) {
+ return false;
+ }
+
+ final Graph graph = (Graph) object;
+ return graph.name.equals(name);
+ }
+
+ /**
+ * Called when the server owner decides to opt-out of BukkitMetrics while the server is running.
+ */
+ protected void onOptOut() {
+ }
+ }
+
+ /**
+ * Interface used to collect custom data for a plugin
+ */
+ public static abstract class Plotter {
+
+ /**
+ * The plot's name
+ */
+ private final String name;
+
+ /**
+ * Construct a plotter with the default plot name
+ */
+ public Plotter() {
+ this("Default");
+ }
+
+ /**
+ * Construct a plotter with a specific plot name
+ *
+ * @param name the name of the plotter to use, which will show up on the website
+ */
+ public Plotter(final String name) {
+ this.name = name;
+ }
+
+ /**
+ * Get the current value for the plotted point. Since this function defers to an external function it may or may
+ * not return immediately thus cannot be guaranteed to be thread friendly or safe. This function can be called
+ * from any thread so care should be taken when accessing resources that need to be synchronized.
+ *
+ * @return the current value for the point to be plotted.
+ */
+ public abstract int getValue();
+
+ /**
+ * Get the column name for the plotted point
+ *
+ * @return the plotted point's column name
+ */
+ public String getColumnName() {
+ return name;
+ }
+
+ /**
+ * Called after the website graphs have been updated
+ */
+ public void reset() {
+ }
+
+ @Override
+ public int hashCode() {
+ return getColumnName().hashCode();
+ }
+
+ @Override
+ public boolean equals(final Object object) {
+ if (!(object instanceof Plotter)) {
+ return false;
+ }
+
+ final Plotter plotter = (Plotter) object;
+ return plotter.name.equals(name) && plotter.getValue() == getValue();
+ }
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index a4de4e9..dc4d4b3 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -36,6 +36,7 @@ public class SpigotConfig
static int version;
static Map<String, Command> commands;
/*========================================================================*/
+ private static Metrics metrics;
public static void init()
{
@@ -67,6 +68,18 @@ public class SpigotConfig
{
MinecraftServer.getServer().server.getCommandMap().register( entry.getKey(), "Spigot", entry.getValue() );
}
+
+ if ( metrics == null )
+ {
+ try
+ {
+ metrics = new Metrics();
+ metrics.start();
+ } catch ( IOException ex )
+ {
+ Bukkit.getServer().getLogger().log( Level.SEVERE, "Could not start metrics service", ex );
+ }
+ }
}
static void readConfig(Class<?> clazz, Object instance)
--
1.9.1
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