From de751bfcb848c186b0d2899a659ad39404b4ef81 Mon Sep 17 00:00:00 2001 From: md_5 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..f1690a2 --- /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; + +/** + *

The metrics class obtains data about a plugin and submits statistics about it to the metrics backend.

+ * Public methods provided by this class:

+ * + * Graph createGraph(String name);
+ * void addCustomData(BukkitMetrics.Plotter plotter);
+ * void start();
+ * + */ +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 graphs = Collections.synchronizedSet(new HashSet()); + /** + * 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().length; + + // 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 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 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; + } + } + + /** + *

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:

+ * + * StringBuffer data = new StringBuffer(); + * data.append(encode("guid")).append('=').append(encode(guid)); + * encodeDataPair(data, "version", description.getVersion()); + * + * + * @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 plotters = new LinkedHashSet(); + + 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 unmodifiable set of the plotter objects in the graph + * + * @return an unmodifiable {@link java.util.Set} of the plotter objects + */ + public Set 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 e84372d..8711c7a 100644 --- a/src/main/java/org/spigotmc/SpigotConfig.java +++ b/src/main/java/org/spigotmc/SpigotConfig.java @@ -30,6 +30,7 @@ public class SpigotConfig static YamlConfiguration config; static int version; /*========================================================================*/ + private static Metrics metrics; public static void init() { @@ -39,6 +40,18 @@ public class SpigotConfig version = getInt( "config-version", 1 ); readConfig( SpigotConfig.class, null ); + + 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) -- 1.8.1.2