ruper2/src/java/core/org/krysalis/ruper2/util/net/http HttpClientUserAgent.java,NONE,1.1

Update of /cvsroot/metamorphosis/ruper2/src/java/core/org/krysalis/ruper2/util/net/http
In directory sc8-pr-cvs1:/tmp/cvs-serv16855/src/java/core/org/krysalis/ruper2/util/net/http

Added Files:
	HttpClientUserAgent.java 
Log Message:
1) Monitoring (so we can sniff out failures in testing, to improve)
2) First step in removing VFS...

--- NEW FILE: HttpClientUserAgent.java ---
/*
 * Created on Aug 23, 2003
 *
 */
package org.krysalis.ruper2.util.net.http;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.HeadMethod;
import org.apache.commons.httpclient.util.HttpURLConnection;
import org.krysalis.ruper2.version.Version;
import org.krysalis.version.util.SystemUtils;

/**
 * @author arb_jack
 * 
 * 
 */
public class HttpClientUserAgent {
	private HttpClient m_client = null;

	public HttpClientUserAgent() {
		initClass();
	}

	private void initClass() {
		m_client = new HttpClient();

		//
		// Enable a timeout
		//
		m_client.getParams().setConnectionTimeout(30000);
	}

	public boolean exists(String url) {
		boolean exists = false;

		HeadMethod head = getHead(url);

		try {
			int resultCode = m_client.executeMethod(head);

			exists = (HttpURLConnection.HTTP_OK == resultCode);
		}
		catch (Exception ex) {
			ex.printStackTrace();
		}
		finally {
			head.releaseConnection();
		}

		return exists;
	}

	public String getContents(String url) {
		String content = null;

		GetMethod get = getGet(url);

		try {
			int resultCode = m_client.executeMethod(get);

			if (HttpURLConnection.HTTP_OK == resultCode)
				content = get.getResponseBodyAsString();
		}
		catch (Exception ex) {
			ex.printStackTrace();
		}
		finally {
			get.releaseConnection();
		}

		return content;
	}

	public void transferContents(String url, OutputStream output) {
		GetMethod get = getGet(url);

		try {
			int resultCode = m_client.executeMethod(get);

			if (HttpURLConnection.HTTP_OK == resultCode) {

				InputStream input = get.getResponseBodyAsStream();

				// Transfer the bytes in blocks..
				byte b[] = new byte[1000];
				int numRead = -1;
				do {
					numRead = input.read(b);
					if (numRead != -1)
						output.write(b, 0, numRead);
				}
				while (numRead != -1);
			}
		}
		catch (Exception ex) {
			ex.printStackTrace();
		}
		finally {
			get.releaseConnection();
		}

	}

	private GetMethod getGet(String url) {
		GetMethod get = new GetMethod(url);
		configureMethod(get);
		return get;
	}

	private HeadMethod getHead(String url) {
		HeadMethod head = new HeadMethod(url);
		configureMethod(head);
		return head;
	}

	/**
	 * Prepares a Method object.
	*/
	private void configureMethod(final HttpMethod method) {
		//method.setPath( );
		method.setFollowRedirects(true);
		method.setRequestHeader(
			"User-Agent",
			"Krysalis-Ruper/" + Version.VERSION.getLongVersion());
	}

	public static void main(String args[]) {
		HttpClientUserAgent agent = new HttpClientUserAgent();

		String url = "http://www.ibiblio.org/maven/junit/jars";

		PrintWriter out = SystemUtils.getSystemOut();

		if (agent.exists(url)) {
			out.println("Exists: " + url);
			out.println("Contents : " + agent.getContents(url));
		}
	}
}



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