Android Open Source - android-obd-reader Mock Obd Gateway Service

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License

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

package pt.lighthouselabs.obd.reader.io;
/* www.j  ava  2s.  c o  m*/
import android.content.SharedPreferences;
import android.util.Log;

import com.google.inject.Inject;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.StringBufferInputStream;

import pt.lighthouselabs.obd.commands.protocol.EchoOffObdCommand;
import pt.lighthouselabs.obd.commands.protocol.LineFeedOffObdCommand;
import pt.lighthouselabs.obd.commands.protocol.ObdResetCommand;
import pt.lighthouselabs.obd.commands.protocol.SelectProtocolObdCommand;
import pt.lighthouselabs.obd.commands.protocol.TimeoutObdCommand;
import pt.lighthouselabs.obd.commands.temperature.AmbientAirTemperatureObdCommand;
import pt.lighthouselabs.obd.enums.ObdProtocols;
import pt.lighthouselabs.obd.reader.activity.MainActivity;
import pt.lighthouselabs.obd.reader.io.ObdCommandJob.ObdCommandJobState;

/**
 * This service is primarily responsible for establishing and maintaining a
 * permanent connection between the device where the application runs and a more
 * OBD Bluetooth interface.
 * <p/>
 * Secondarily, it will serve as a repository of ObdCommandJobs and at the same
 * time the application state-machine.
 */
public class MockObdGatewayService extends AbstractGatewayService {

  private static final String TAG = MockObdGatewayService.class.getName();

  public void startService() {
    Log.d(TAG, "Starting "+this.getClass().getName()+" service..");

    // Let's configure the connection.
    Log.d(TAG, "Queing jobs for connection configuration..");
    queueJob(new ObdCommandJob(new ObdResetCommand()));
    queueJob(new ObdCommandJob(new EchoOffObdCommand()));

    /*
     * Will send second-time based on tests.
     *
     * TODO this can be done w/o having to queue jobs by just issuing
     * command.run(), command.getResult() and validate the result.
     */
    queueJob(new ObdCommandJob(new EchoOffObdCommand()));
    queueJob(new ObdCommandJob(new LineFeedOffObdCommand()));
    queueJob(new ObdCommandJob(new TimeoutObdCommand(62)));

    // For now set protocol to AUTO
    queueJob(new ObdCommandJob(new SelectProtocolObdCommand(ObdProtocols.AUTO)));

    // Job for returning dummy data
    queueJob(new ObdCommandJob(new AmbientAirTemperatureObdCommand()));

    queueCounter = 0L;
    Log.d(TAG, "Initialization jobs queued.");

    isRunning = true;
  }


    /**
    * Runs the queue until the service is stopped
    */
    protected void executeQueue() {
      Log.d(TAG, "Executing queue..");
      isQueueRunning = true;
      while (!jobsQueue.isEmpty()) {
          ObdCommandJob job = null;
          try {
            job = jobsQueue.take();

            Log.d(TAG, "Taking job[" + job.getId() + "] from queue..");

            if (job.getState().equals(ObdCommandJobState.NEW)) {
              Log.d(TAG, "Job state is NEW. Run it..");
              job.setState(ObdCommandJobState.RUNNING);
              Log.d(TAG, job.getCommand().getName());
              job.getCommand().run(new ByteArrayInputStream("41 00 00 00>41 00 00 00>41 00 00 00>".getBytes()), new ByteArrayOutputStream());
            } else {
              Log.e(TAG, "Job state was not new, so it shouldn't be in queue. BUG ALERT!");
            }
          } catch (Exception e) {
            e.printStackTrace();
            job.setState(ObdCommandJobState.EXECUTION_ERROR);
            Log.e(TAG, "Failed to run command. -> " + e.getMessage());
          }

          if (job != null) {
            Log.d(TAG, "Job is finished.");
            job.setState(ObdCommandJobState.FINISHED);
            final ObdCommandJob job2=job;
            ((MainActivity) ctx).runOnUiThread(new Runnable() {
              @Override
              public void run() {
                ((MainActivity) ctx).stateUpdate(job2);
              }
            });

          }
      }
      // will run next time a job is queued
      isQueueRunning = false;
    }



  /**
   * Stop OBD connection and queue processing.
   */
  public void stopService() {
    Log.d(TAG, "Stopping service..");

    notificationManager.cancel(NOTIFICATION_ID);
    jobsQueue.removeAll(jobsQueue); // TODO is this safe?
    isRunning = false;

    // kill service
    stopSelf();
  }

}
Java Source Code List
