montocalculatorcli.MontoManager.java Source code

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Here is the source code for montocalculatorcli.MontoManager.java

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/*
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package montocalculatorcli;

import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import org.zeromq.ZMQ;

/**
 *
 * @author charlie
 */
public class MontoManager {
    private boolean isConnected;
    private static ZMQ.Context context;
    private static ZMQ.Socket fromMonto;
    private static ZMQ.Socket toMonto;

    public MontoManager() {
        isConnected = false;
    }

    public boolean connect() {
        //Connect to monto
        String inConnection = "tcp://127.0.0.1:5003";
        String outConnection = "tcp://127.0.0.1:5000";
        try {
            context = ZMQ.context(1);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        fromMonto = context.socket(ZMQ.SUB);
        toMonto = context.socket(ZMQ.REQ);
        fromMonto.connect(inConnection);
        fromMonto.subscribe(new byte[0]);
        toMonto.connect(outConnection);
        isConnected = true;
        return true;
    }

    public boolean disconnect() {
        fromMonto.close();
        toMonto.close();
        context.term();
        isConnected = false;
        return true;
    }

    public final void sendMessage(String contents) {
        toMonto.send(("{\"source\":\"java-frontend\", " + "\"language\":\"calc\", " + "\"contents\":\"" + contents
                + "\", " + "\"selections\":\"\"}").getBytes());
        toMonto.recv();
    }

    public String receiveProduct() {
        if (isConnected) {
            String rawMessage = new String(fromMonto.recv());
            JSONObject message = (JSONObject) JSONValue.parse(rawMessage);
            return (String) message.get("contents");
        } else {
            return "Error: Connection to Monto was closed";
        }
    }
}