/*license*\
XBN-Java: Copyright (C) 2014, Jeff Epstein (aliteralmind __DASH__ github __AT__ yahoo __DOT__ com)
This software is dual-licensed under the:
- Lesser General Public License (LGPL) version 3.0 or, at your option, any later version;
- Apache Software License (ASL) version 2.0.
Either license may be applied at your discretion. More information may be found at
- http://en.wikipedia.org/wiki/Multi-licensing.
The text of both licenses is available in the root directory of this project, under the names "LICENSE_lgpl-3.0.txt" and "LICENSE_asl-2.0.txt". The latest copies may be downloaded at:
- LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
- ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
\*license*/
package com.github.xbn.testdev.ant;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.UnknownHostException;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
/**
<p>Detect if the internet is available, determined by the ability to reach a specific url.</p>
* @since 0.1.0
* @author Copyright (C) 2014, Jeff Epstein ({@code aliteralmind __DASH__ github __AT__ yahoo __DOT__ com}), dual-licensed under the LGPL (version 3.0 or later) or the ASL (version 2.0). See source code for details. <a href="http://xbnjava.aliteralmind.com">{@code http://xbnjava.aliteralmind.com}</a>, <a href="https://github.com/aliteralmind/xbnjava">{@code https://github.com/aliteralmind/xbnjava}</a>
**/
public class ATDetectInternet extends Task {
private String sUrl = null;
private String sProperty = null;
/**
<p>Create an ATDetectInternet. This does nothing.</p>
*/
public ATDetectInternet() {
}
/**
<p>Set the url to reach.</p>
* @param url The url. May not be null or empty.
*/
public void setUrl(String url) {
sUrl = url;
}
/**
<p>The property which should be set only if the url can be reached. It is either set to true (if the url can be reached) or not set at all.</p>
* @param prop_name The property name. May not be null or empty.
*/
public void setProperty(String prop_name) {
sProperty = prop_name;
}
/**
<p>Do it. Uh huh. Oh yeah.</p>
*/
public void execute() throws BuildException {
if(sUrl == null || sUrl.length() == 0) {
throw new BuildException("Parameter url ('" + sUrl + "') is null or empty.");
}
if(sProperty == null || sProperty.length() == 0) {
throw new BuildException("Parameter property ('" + sProperty + "') is null or empty.");
}
//Copied from xbn.util.Utility.appendWebPageSource
try {
URL url = new URL(sUrl);
InputStream isUNUSED = url.openStream();
getProject().setProperty(sProperty, "true");
} catch(UnknownHostException uhx) {
System.out.println("INTERNET IS NOT AVAILABLE, or provided host is invalid. " + uhx.toString());
} catch(MalformedURLException mux) {
throw new BuildException("Parameter url ('" + sUrl + "') is a malformed url. " + mux.toString() + ". (It does seem that we are connected to the internet, otherwise a uhx would have been thrown.)");
} catch(FileNotFoundException fnfx) {
throw new BuildException("Parameter url ('" + sUrl + "') is invalid. " + fnfx.toString() + ". (It does seem that we are connected to the internet, otherwise a uhx would have been thrown.)");
} catch(IOException iox) {
System.out.println("INTERNET IS NOT AVAILABLE. " + iox.toString());
}
}
}