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Metrics.java
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Metrics.java
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/*
* Copyright 2011 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 com.griefcraft.util;
import com.griefcraft.lwc.LWC;
import org.bukkit.Bukkit;
import org.bukkit.plugin.Plugin;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.UUID;
/**
* Tooling to post to metrics.griefcraft.com
*/
public class Metrics {
/**
* The base url of the metrics domain
*/
private static final String BASE_URL = "http://metrics.griefcraft.com";
/**
* The url used to report a server's status
*/
private static final String REPORT_URL = "/report/%s";
/**
* Unique server id
*/
private String guid;
public Metrics() {
loadGUID();
}
/**
* Plugin-specific code to load the server's guid
*/
private void loadGUID() {
LWC lwc = LWC.getInstance();
// Attempt to load an existing guid
guid = lwc.getPhysicalDatabase().getInternal("guid");
// if it's still null we need to create one
if (guid == null) {
// Generate it directly into the database to guarantee it saves
lwc.getPhysicalDatabase().setInternal("guid", UUID.randomUUID().toString());
// and then load it from the database again
guid = lwc.getPhysicalDatabase().getInternal("guid");
}
}
/**
* Generic method that posts a plugin to the metrics website
*
* @param plugin
*/
public void postPlugin(Plugin plugin) throws IOException {
// Construct the post data
String response = "ERR No response";
String data = encode("guid") + "=" + encode(guid)
+ "&" + encode("version") + "=" + encode(plugin.getDescription().getVersion())
+ "&" + encode("server") + "=" + encode(Bukkit.getVersion());
// Create the url
URL url = new URL(BASE_URL + String.format(REPORT_URL, plugin.getDescription().getName()));
// Connect to the website
URLConnection connection = url.openConnection();
connection.setDoOutput(true);
// Write the data
OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
writer.write(data);
writer.flush();
// Now read the response
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
response = reader.readLine();
// close resources
writer.close();
reader.close();
if (response.startsWith("OK")) {
// Useless return, but it documents that we should be receiving OK followed by an optional description
return;
} else if (response.startsWith("ERR")) {
// Throw it to whoever is catching us
throw new IOException(response);
}
}
/**
* Encode text as UTF-8
*
* @param text
* @return
*/
private String encode(String text) throws UnsupportedEncodingException {
return URLEncoder.encode(text, "UTF-8");
}
}