DatabaseWriterService.java

package pl.llp.aircasting.storage;

import pl.llp.aircasting.storage.db.AirCastingDB;
import pl.llp.aircasting.storage.db.WritableDatabaseTask;
import pl.llp.aircasting.util.Constants;

import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import com.google.inject.Inject;
import roboguice.service.RoboService;

import java.util.concurrent.atomic.AtomicBoolean;

import static pl.llp.aircasting.sensor.BluetoothConnector.sleepFor;

/**
 * Created by ags on 03/16/13 at 19:10
 */
public class DatabaseWriterService extends RoboService
{
  public static final int DELAY_MILLISECONDS = 200;

  @Inject AirCastingDB db;
  @Inject DatabaseTaskQueue taskService;

  final AtomicBoolean shouldRun = new AtomicBoolean(true);
  private Thread thread;

  @Inject
  public void init()
  {
    thread = new Thread(new Runnable()
    {
      @Override
      public void run()
      {
        while (shouldRun.get())
        {
          if (taskService.somethingAvailable())
          {
            unitOfAction();
          }
          else
          {
            sleepFor(DELAY_MILLISECONDS);
          }
        }
      }
    });
  }

  @Override
  public void onStart(Intent intent, int startId)
  {
    super.onStart(intent, startId);
    if(thread.getState() == Thread.State.NEW)
    {
      thread.start();
    }
  }

  void unitOfAction()
  {
    try
    {
      WritableDatabaseTask task = taskService.getFirst();
      db.executeWritableTask(task);
    }
    catch (Exception e)
    {
      Log.e(Constants.TAG, "Something bad happened", e);
    }
  }

  @Override
  public IBinder onBind(Intent intent)
  {
    return null;
  }
}