Difference between revisions of "Sirit Example Client"

Revision as of 13:59, 27 May 2009

This class shows how to create a program to talk to the Sirit INfinity 510 reader.

/*
 *  SimpleSiritClientNoGUI.java
 *
 *  Created:	27.05.2009
 *  Project:	RiFidi SiritClient
 *  				http://www.rifidi.org
 *  				http://rifidi.sourceforge.net
 *  Copyright:	Pramari LLC and the Rifidi Project
 *  License:	Lesser GNU Public License (LGPL)
 *  				http://www.opensource.org/licenses/lgpl-license.html
 *	Author:		Stefan Fahrnbauer - stefan@pramari.com
 */
package sandbox;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

/**
 * @author Stefan Fahrnbauer - stefan@pramari.com
 * 
 */
public class SimpleSiritClientNoGUI {

	String ipAddress = "192.168.11.130";
	Socket sock;
	int port = 50007;
	BufferedReader reader;
	PrintWriter writer;

	Future<String> future;

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		SimpleSiritClientNoGUI client = new SimpleSiritClientNoGUI();
		client.go();
	}

	/**
	 * executes the application
	 */
	public void go() {

		setUpNetworking();

		String command = "";

		// Login to reader
		command = "reader.login(login=admin,pwd=readeradmin)";
		processCommand(command);

		// let the reader scan for tags for 3 seconds
		command = "tag.db.scan_tags(3000)";
		processCommand(command);

		tearDown();
	}

	/**
	 * initializes the connection
	 */
	public void setUpNetworking() {
		try {
			// connection for submitting commands
			sock = new Socket(this.ipAddress, this.port);
			reader = new BufferedReader(new InputStreamReader(sock
					.getInputStream()));
			writer = new PrintWriter(sock.getOutputStream());
		} catch (IOException ex) {
			ex.printStackTrace();
		}
	}

	/**
	 * closes the connection
	 */
	public void tearDown() {
		try {
			sock.close();
		} catch (IOException ex) {
			ex.printStackTrace();
		}
	}

	/**
	 * process command, get response and write to log
	 */
	public void processCommand(String command) {

		// create callable to read response
		ExecutorService pool = Executors.newFixedThreadPool(2);
		// Callable for Commandchannel
		Callable<String> callable = new IncomingCallable();
		future = pool.submit(callable);

		// send command to reader
		sendCommand(command);

		// write to log window
		System.out.println(">>" + command + "\r\n");

		// receive and write response
		System.out.println(getLastResponse());
	}

	/**
	 * sends command to reader
	 */
	public void sendCommand(String command) {
		// send command to reader
		writer.print(command + "\r\n");
		writer.flush();
	}

	/**
	 * waits for the reader's response
	 */
	public String getLastResponse() {
		String response = "";
		try {
			response = future.get();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return response;
	}

	public class IncomingCallable implements Callable<String> {
		PrintWriter writer;
		String command;

		public String call() {
			// get response
			String message = "";
			String lastResponse = "";
			try {
				while (lastResponse.indexOf("\r\n\r\n") == -1) {
					message = reader.readLine();
					message = message.replace("\r", "").replace("\n", "")
							+ "\r\n";
					lastResponse = lastResponse.concat(message);
				}
			} catch (Exception ex) {
				ex.printStackTrace();
			}
			return lastResponse;
		}
	}

}