Android Open Source - GeoTagger Callback Servlet

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Back to project page GeoTagger.

License

The source code is released under:

GNU General Public License

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Java Source Code

package horizon.geotagger.server;
//  ww  w  . ja  v  a2  s .c om
import horizon.geotagger.Base64;
import horizon.geotagger.PMF;
import horizon.geotagger.model.Attachment;
import horizon.geotagger.model.Place;
import horizon.geotagger.model.Tag;

import java.io.BufferedInputStream;
import java.io.IOException;

import javax.jdo.PersistenceManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;

import com.google.appengine.api.datastore.Blob;

public class CallbackServlet
extends HttpServlet
{
  private static final long serialVersionUID = 1030756850358949459L;
  
  private static Logger logger = Logger.getLogger(CallbackServlet.class);
    
  @Override
  protected void doPost(
      HttpServletRequest request, HttpServletResponse response)
  throws  ServletException,
      IOException
  {
    doPut(request, response);
  }

  @Override
  protected void doPut(
      HttpServletRequest request, HttpServletResponse response)
  throws  ServletException,
      IOException
  {
    BufferedInputStream in = new BufferedInputStream(
        request.getInputStream());
    
    ObjectMapper mapper = new ObjectMapper();
    JsonNode root = mapper.readTree(in);
    
    logger.debug(root.toString());
    
    in.close();
    
    JsonNode att = root.get("thing").get("atts").get(0);
    String mime = att.get("mime").getTextValue();
    JsonNode jplace = root.get("place");
    
    String body64 = att.get("body").getTextValue();
    byte[] body = Base64.decode(body64);

    Tag tag = new Tag();
    Place place = new Place();
    Attachment attachment = new Attachment();
    tag.setAttachment(attachment);
    tag.setPlace(place);
    attachment.setData(new Blob(body));
    
    if(mime.equals("text/plain"))
      attachment.setType(Attachment.Type.Text);
    else if(mime.equals("image/jpeg"))
      attachment.setType(Attachment.Type.Image);
    else
      throw new RuntimeException("Unknown mime-type: " + mime);
    
    place.setLatitude(jplace.get("lat").getDoubleValue());
    place.setLongitude(jplace.get("lon").getDoubleValue());
    
    PersistenceManager pm = PMF.get().getPersistenceManager();
    pm.makePersistent(tag);    
  }
}

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