/**
* Copyright 2011 Marco Berri - marcoberri@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
*/
package it.marcoberri.mbmeteo.action.chart;
import com.github.jmkgreen.morphia.query.Query;
import com.mongodb.gridfs.GridFSDBFile;
import com.mongodb.gridfs.GridFSInputFile;
import it.marcoberri.mbmeteo.helper.ChartEnumHelper;
import it.marcoberri.mbmeteo.helper.MongoConnectionHelper;
import it.marcoberri.mbmeteo.model.Cache;
import it.marcoberri.mbmeteo.model.Meteolog;
import it.marcoberri.mbmeteo.utils.DateTimeUtil;
import it.marcoberri.mbmeteo.utils.Default;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.bson.types.ObjectId;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
/**
*
* @author Marco Berri <marcoberri@gmail.com>
*/
public class Get extends Base {
/**
*
*/
/**
* Processes requests for both HTTP
* <code>GET</code> and
* <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
log.debug("start : " + this.getClass().getName());
final HashMap<String, String> params = getParams(request.getParameterMap());
final Integer dimy = Default.toInteger(params.get("dimy"), 600);
final Integer dimx = Default.toInteger(params.get("dimx"), 800);
final String from = Default.toString(params.get("from") + " 00:00:00", "1970-01-01 00:00:00");
final String to = Default.toString(params.get("to") + " 23:59:00", "2030-01-01 23:59:00");
final String field = Default.toString(params.get("field"), "outdoorTemperature");
request.getSession().setAttribute("from", params.get("from"));
request.getSession().setAttribute("to", params.get("to"));
final String cacheKey = getCacheKey(params);
if (cacheReadEnable) {
final Query q = ds.find(Cache.class);
q.filter("cacheKey", cacheKey).filter("servletName", this.getClass().getName());
final Cache c = (Cache) q.get();
if (c == null) {
log.info("cacheKey:" + cacheKey + " on servletName: " + this.getClass().getName() + " not found");
}
if (c != null) {
log.debug("get file from cache id: " + c.getGridId());
final GridFSDBFile imageForOutput = MongoConnectionHelper.getGridFS().findOne(new ObjectId(c.getGridId()));
if (imageForOutput != null) {
ds.save(c);
try {
response.setHeader("Content-Length", "" + imageForOutput.getLength());
response.setHeader("Content-Disposition", "inline; filename=\"" + imageForOutput.getFilename() + "\"");
final OutputStream out = response.getOutputStream();
final InputStream in = imageForOutput.getInputStream();
final byte[] content = new byte[(int) imageForOutput.getLength()];
in.read(content);
out.write(content);
in.close();
out.close();
return;
} catch (Exception e) {
log.error(e);
}
} else {
log.error("file not in db");
}
}
}
final String titleChart = ChartEnumHelper.getByName(field).getTitle();
final String umChart = ChartEnumHelper.getByName(field).getUm();
final Query q = ds.createQuery(Meteolog.class);
final Date dFrom = DateTimeUtil.getDate("yyyy-MM-dd hh:mm:ss", from);
final Date dTo = DateTimeUtil.getDate("yyyy-MM-dd hh:mm:ss", to);
q.disableValidation().filter("time >=", dFrom).filter("time <=", dTo);
final List<Meteolog> meteoLogList = q.asList();
final TimeSeries series = new TimeSeries(umChart);
for (Meteolog m : meteoLogList) {
final Millisecond t = new Millisecond(m.getTime());
try {
//violenza di una reflection
final Method method = m.getClass().getMethod(ChartEnumHelper.getByName(field).getMethod());
final Number n = (Number) method.invoke(m);
series.add(t, n);
} catch (NoSuchMethodException ex) {
log.error(ex);
} catch (InvocationTargetException ex) {
log.error(ex);
} catch (IllegalAccessException ex) {
log.error(ex);
} catch (SecurityException ex) {
log.error(ex);
}
}
final TimeSeriesCollection dataset = new TimeSeriesCollection();
dataset.addSeries(series);
final JFreeChart chart = ChartFactory.createTimeSeriesChart(titleChart, "", umChart, dataset, false, false, false);
final XYPlot plot = (XYPlot) chart.getPlot();
final DateAxis axis = (DateAxis) plot.getDomainAxis();
axis.setDateFormatOverride(new SimpleDateFormat("dd-MM-yyyy HH:mm"));
axis.setVerticalTickLabels(true);
if (field.toUpperCase().indexOf("PRESSURE") != -1) {
plot.getRangeAxis().setRange(chartPressureMin, chartPressureMax);
}
final File f = File.createTempFile("mbmeteo", ".jpg");
ChartUtilities.saveChartAsJPEG(f, chart, dimx, dimy);
try {
if (cacheWriteEnable) {
final GridFSInputFile gfsFile = MongoConnectionHelper.getGridFS().createFile(f);
gfsFile.setFilename(f.getName());
gfsFile.save();
final Cache c = new Cache();
c.setServletName(this.getClass().getName());
c.setCacheKey(cacheKey);
c.setGridId(gfsFile.getId().toString());
ds.save(c);
}
response.setContentType("image/jpeg");
response.setHeader("Content-Length", "" + f.length());
response.setHeader("Content-Disposition", "inline; filename=\"" + f.getName() + "\"");
final OutputStream out = response.getOutputStream();
final FileInputStream in = new FileInputStream(f.toString());
final int size = in.available();
final byte[] content = new byte[size];
in.read(content);
out.write(content);
in.close();
out.close();
} catch (Exception e) {
log.error(e);
} finally {
final boolean delete = f.delete();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP
* <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP
* <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}