Android Open Source - miner Connection Processor

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License

The source code is released under:
Apache License
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Java Source Code

package com.kolomiyets.miner.bt;
/*from w  ww. j a  v  a  2  s .  c  o  m*/
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import android.bluetooth.BluetoothSocket;
import android.os.Handler;
import android.os.HandlerThread;
import android.util.Log;

import com.kolomiyets.miner.Miner;
import com.kolomiyets.miner.bt.notification.BtNotificationCmd;
import com.kolomiyets.miner.bt.notification.BtNotificationHandshake;
import com.kolomiyets.miner.bt.notification.BtNotificationState;
import com.kolomiyets.miner.bt.notification.EConnectionSate;
import com.kolomiyets.miner.bt.notification.NotificationManager;
import com.kolomiyets.miner.bt.protocol.CmdBase;
import com.kolomiyets.miner.bt.protocol.CmdFactory;
import com.kolomiyets.miner.bt.protocol.CmdHandshake;

public class ConnectionProcessor {
  private BluetoothSocket socket;
  private NotificationManager notificationManager;
  private InputStreamReader input;
  private OutputStreamWriter output;
  private Thread reader;
  private HandlerThread writer;
  private Handler writerHandler;
  
  public ConnectionProcessor(BluetoothSocket socket, NotificationManager notificationManager) {
    this.socket = socket;
    this.notificationManager = notificationManager;
    
        try {
          this.input  = new InputStreamReader(this.socket.getInputStream());
          this.output = new OutputStreamWriter(this.socket.getOutputStream());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  public synchronized void writeCmd(final CmdBase cmd) {
    writerHandler.post(new Runnable() {
      
      @Override
      public void run() {
        if(Thread.currentThread().isInterrupted()){
          ((HandlerThread)Thread.currentThread()).getLooper().quit();
          return;
        }
        try {
//          if(Miner.D) Log.d(Thread.currentThread().getName(), "write cmd: " + CmdFactory.toString(cmd));
          output.write(CmdFactory.toString(cmd));
          
          if(Thread.currentThread().isInterrupted()){
            ((HandlerThread)Thread.currentThread()).getLooper().quit();
            return;
          }
          
          output.flush();
//          if(Miner.D) Log.d(Thread.currentThread().getName(), "write cmd - OK");
        } catch (IOException e) {
          e.printStackTrace();
          notificationManager.postNotification(new BtNotificationState(EConnectionSate.TERMINATED));
        }
      }
    });
  }
  
  public synchronized void start() {
    ConnectionBase.killThread(reader);
    reader = new Thread(){
      @Override
      public void run() {
        setName("BtReader");
        if(Miner.D) Log.d(getName(), "starting reader...");
        StringBuilder str = new StringBuilder(1024);
        char[] buf = new char[1024];
        int read = -1;
        int index = -1;
        while (!Thread.currentThread().isInterrupted()) {
          try {
            if(Miner.D) Log.d(getName(), "reading...");
            while((read = input.read(buf))>=0){
              str.append(buf, 0, read);
//              if(Miner.D) Log.d(getName(), "buffer state: " + str);
              
              while((index = str.indexOf(CmdFactory.CMD_TERMINATION)) >= 0){
                String sCmd = str.substring(0, index);
                str.delete(0, index+CmdFactory.CMD_TERMINATION.length());
                CmdBase cmd = CmdFactory.getCmd(sCmd);
                if(cmd instanceof CmdHandshake){
                  notificationManager.postNotification(
                      new BtNotificationHandshake((CmdHandshake) cmd));
                } else {
                  notificationManager.postNotification(new BtNotificationCmd(cmd));
                }
                
              }
            }
          } catch (IOException e) {
            e.printStackTrace();
            notificationManager.postNotification(new BtNotificationState(EConnectionSate.TERMINATED));
            return;
          }
        }
      }
    };
    reader.start();
    
    ConnectionBase.killThread(writer);
    writer = new HandlerThread("BtWriter");
    if(Miner.D) Log.d(writer.getName(), "starting writer...");
    writer.start();
    writerHandler = new Handler(writer.getLooper());
  }
  
  public synchronized void stop() throws IOException {
    ConnectionBase.killThread(reader);
    ConnectionBase.killThread(writer);
    if(input!=null) {
      final InputStreamReader _input = input;
      input = null;
      _input.close();
    }
    if(output!=null) {
      final OutputStreamWriter _output = output;
      output = null;
      _output.close();
    }
      if(socket!=null) {
        final BluetoothSocket _socket = socket;
        socket = null;
        _socket.close();
      }
  } 
}
Java Source Code List
