Mike Primm
13 years ago
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b75f960683
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9c671f2db4
8 changed files with 393 additions and 10 deletions
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/* |
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* Copyright 2011 Tyler Blair. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modification, are |
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* permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, this list of |
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* conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list |
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* of conditions and the following disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The views and conclusions contained in the software and documentation are those of the |
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* authors and contributors and should not be interpreted as representing official policies, |
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* either expressed or implied, of anybody else. |
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*/ |
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package org.dynmap.worldguard; |
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import org.bukkit.Bukkit; |
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import org.bukkit.configuration.InvalidConfigurationException; |
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import org.bukkit.configuration.file.YamlConfiguration; |
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import org.bukkit.plugin.Plugin; |
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import org.bukkit.plugin.PluginDescriptionFile; |
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.InputStreamReader; |
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import java.io.OutputStreamWriter; |
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import java.io.UnsupportedEncodingException; |
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import java.net.Proxy; |
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import java.net.URL; |
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import java.net.URLConnection; |
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import java.net.URLEncoder; |
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import java.util.UUID; |
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import java.util.logging.Level; |
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public class MetricsLite { |
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/** |
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* The current revision number |
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*/ |
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private final static int REVISION = 5; |
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/** |
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* The base url of the metrics domain |
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*/ |
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private static final String BASE_URL = "http://mcstats.org"; |
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/** |
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* The url used to report a server's status |
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*/ |
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private static final String REPORT_URL = "/report/%s"; |
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/** |
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* Interval of time to ping (in minutes) |
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*/ |
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private final static int PING_INTERVAL = 10; |
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/** |
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* The plugin this metrics submits for |
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*/ |
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private final Plugin plugin; |
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/** |
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* The plugin configuration file |
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*/ |
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private final YamlConfiguration configuration; |
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/** |
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* The plugin configuration file |
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*/ |
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private final File configurationFile; |
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/** |
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* Unique server id |
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*/ |
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private final String guid; |
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/** |
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* Lock for synchronization |
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*/ |
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private final Object optOutLock = new Object(); |
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/** |
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* Id of the scheduled task |
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*/ |
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private volatile int taskId = -1; |
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public MetricsLite(Plugin plugin) throws IOException { |
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if (plugin == null) { |
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throw new IllegalArgumentException("Plugin cannot be null"); |
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} |
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this.plugin = plugin; |
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// load the config
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configurationFile = getConfigFile(); |
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configuration = YamlConfiguration.loadConfiguration(configurationFile); |
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// add some defaults
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configuration.addDefault("opt-out", false); |
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configuration.addDefault("guid", UUID.randomUUID().toString()); |
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// Do we need to create the file?
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if (configuration.get("guid", null) == null) { |
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configuration.options().header("http://mcstats.org").copyDefaults(true); |
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configuration.save(configurationFile); |
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} |
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// Load the guid then
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guid = configuration.getString("guid"); |
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} |
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/** |
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* Start measuring statistics. This will immediately create an async repeating task as the plugin and send |
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* the initial data to the metrics backend, and then after that it will post in increments of |
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* PING_INTERVAL * 1200 ticks. |
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* |
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* @return True if statistics measuring is running, otherwise false. |
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*/ |
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public boolean start() { |
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synchronized (optOutLock) { |
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// Did we opt out?
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if (isOptOut()) { |
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return false; |
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} |
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// Is metrics already running?
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if (taskId >= 0) { |
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return true; |
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} |
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// Begin hitting the server with glorious data
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taskId = plugin.getServer().getScheduler().scheduleAsyncRepeatingTask(plugin, new Runnable() { |
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private boolean firstPost = true; |
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public void run() { |
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try { |
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// This has to be synchronized or it can collide with the disable method.
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synchronized (optOutLock) { |
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// Disable Task, if it is running and the server owner decided to opt-out
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if (isOptOut() && taskId > 0) { |
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plugin.getServer().getScheduler().cancelTask(taskId); |
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taskId = -1; |
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} |
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} |
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// We use the inverse of firstPost because if it is the first time we are posting,
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// it is not a interval ping, so it evaluates to FALSE
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// Each time thereafter it will evaluate to TRUE, i.e PING!
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postPlugin(!firstPost); |
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// After the first post we set firstPost to false
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// Each post thereafter will be a ping
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firstPost = false; |
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} catch (IOException e) { |
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//Bukkit.getLogger().log(Level.INFO, "[Metrics] " + e.getMessage());
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} |
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} |
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}, 0, PING_INTERVAL * 1200); |
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return true; |
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} |
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} |
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/** |
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* Has the server owner denied plugin metrics? |
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* |
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* @return true if metrics should be opted out of it |
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*/ |
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public boolean isOptOut() { |
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synchronized(optOutLock) { |
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try { |
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// Reload the metrics file
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configuration.load(getConfigFile()); |
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} catch (IOException ex) { |
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Bukkit.getLogger().log(Level.INFO, "[Metrics] " + ex.getMessage()); |
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return true; |
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} catch (InvalidConfigurationException ex) { |
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Bukkit.getLogger().log(Level.INFO, "[Metrics] " + ex.getMessage()); |
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return true; |
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} |
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return configuration.getBoolean("opt-out", false); |
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} |
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} |
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/** |
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* Enables metrics for the server by setting "opt-out" to false in the config file and starting the metrics task. |
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* |
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* @throws IOException |
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*/ |
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public void enable() throws IOException { |
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// This has to be synchronized or it can collide with the check in the task.
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synchronized (optOutLock) { |
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// Check if the server owner has already set opt-out, if not, set it.
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if (isOptOut()) { |
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configuration.set("opt-out", false); |
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configuration.save(configurationFile); |
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} |
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// Enable Task, if it is not running
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if (taskId < 0) { |
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start(); |
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} |
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} |
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} |
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/** |
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* Disables metrics for the server by setting "opt-out" to true in the config file and canceling the metrics task. |
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* |
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* @throws IOException |
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*/ |
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public void disable() throws IOException { |
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// This has to be synchronized or it can collide with the check in the task.
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synchronized (optOutLock) { |
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// Check if the server owner has already set opt-out, if not, set it.
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if (!isOptOut()) { |
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configuration.set("opt-out", true); |
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configuration.save(configurationFile); |
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} |
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// Disable Task, if it is running
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if (taskId > 0) { |
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this.plugin.getServer().getScheduler().cancelTask(taskId); |
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taskId = -1; |
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} |
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} |
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} |
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/** |
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* Gets the File object of the config file that should be used to store data such as the GUID and opt-out status |
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* |
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* @return the File object for the config file |
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*/ |
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public File getConfigFile() { |
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// I believe the easiest way to get the base folder (e.g craftbukkit set via -P) for plugins to use
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// is to abuse the plugin object we already have
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// plugin.getDataFolder() => base/plugins/PluginA/
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// pluginsFolder => base/plugins/
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// The base is not necessarily relative to the startup directory.
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File pluginsFolder = plugin.getDataFolder().getParentFile(); |
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// return => base/plugins/PluginMetrics/config.yml
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return new File(new File(pluginsFolder, "PluginMetrics"), "config.yml"); |
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} |
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/** |
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* Generic method that posts a plugin to the metrics website |
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*/ |
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private void postPlugin(boolean isPing) throws IOException { |
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// The plugin's description file containg all of the plugin data such as name, version, author, etc
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final PluginDescriptionFile description = plugin.getDescription(); |
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// Construct the post data
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final StringBuilder data = new StringBuilder(); |
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data.append(encode("guid")).append('=').append(encode(guid)); |
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encodeDataPair(data, "version", description.getVersion()); |
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encodeDataPair(data, "server", Bukkit.getVersion()); |
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encodeDataPair(data, "players", Integer.toString(Bukkit.getServer().getOnlinePlayers().length)); |
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encodeDataPair(data, "revision", String.valueOf(REVISION)); |
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// If we're pinging, append it
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if (isPing) { |
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encodeDataPair(data, "ping", "true"); |
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} |
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// Create the url
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URL url = new URL(BASE_URL + String.format(REPORT_URL, encode(plugin.getDescription().getName()))); |
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// Connect to the website
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URLConnection connection; |
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// Mineshafter creates a socks proxy, so we can safely bypass it
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// It does not reroute POST requests so we need to go around it
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if (isMineshafterPresent()) { |
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connection = url.openConnection(Proxy.NO_PROXY); |
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} else { |
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connection = url.openConnection(); |
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} |
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connection.setDoOutput(true); |
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// Write the data
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final OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream()); |
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writer.write(data.toString()); |
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writer.flush(); |
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// Now read the response
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final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); |
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final String response = reader.readLine(); |
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// close resources
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writer.close(); |
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reader.close(); |
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if (response == null || response.startsWith("ERR")) { |
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throw new IOException(response); //Throw the exception
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} |
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//if (response.startsWith("OK")) - We should get "OK" followed by an optional description if everything goes right
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} |
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/** |
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* Check if mineshafter is present. If it is, we need to bypass it to send POST requests |
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* |
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* @return true if mineshafter is installed on the server |
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*/ |
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private boolean isMineshafterPresent() { |
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try { |
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Class.forName("mineshafter.MineServer"); |
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return true; |
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} catch (Exception e) { |
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return false; |
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} |
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} |
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/** |
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* <p>Encode a key/value data pair to be used in a HTTP post request. This INCLUDES a & so the first |
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* key/value pair MUST be included manually, e.g:</p> |
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* <code> |
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* StringBuffer data = new StringBuffer(); |
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* data.append(encode("guid")).append('=').append(encode(guid)); |
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* encodeDataPair(data, "version", description.getVersion()); |
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* </code> |
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* |
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* @param buffer the stringbuilder to append the data pair onto |
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* @param key the key value |
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* @param value the value |
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*/ |
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private static void encodeDataPair(final StringBuilder buffer, final String key, final String value) throws UnsupportedEncodingException { |
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buffer.append('&').append(encode(key)).append('=').append(encode(value)); |
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} |
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/** |
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* Encode text as UTF-8 |
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* |
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* @param text the text to encode |
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* @return the encoded text, as UTF-8 |
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*/ |
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private static String encode(final String text) throws UnsupportedEncodingException { |
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return URLEncoder.encode(text, "UTF-8"); |
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} |
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} |
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