frk.gpssimulator.service.impl.DefaultKmlService.java Source code

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Here is the source code for frk.gpssimulator.service.impl.DefaultKmlService.java

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/*
 * Copyright 2015 the original author or authors.
 *
 * 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 frk.gpssimulator.service.impl;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Set;

import javax.xml.transform.stream.StreamResult;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.oxm.Marshaller;
import org.springframework.oxm.XmlMappingException;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

import de.micromata.opengis.kml.v_2_2_0.AltitudeMode;
import de.micromata.opengis.kml.v_2_2_0.Coordinate;
import de.micromata.opengis.kml.v_2_2_0.Folder;
import de.micromata.opengis.kml.v_2_2_0.Kml;
import de.micromata.opengis.kml.v_2_2_0.KmlFactory;
import de.micromata.opengis.kml.v_2_2_0.Link;
import de.micromata.opengis.kml.v_2_2_0.LookAt;
import de.micromata.opengis.kml.v_2_2_0.NetworkLink;
import de.micromata.opengis.kml.v_2_2_0.Placemark;
import de.micromata.opengis.kml.v_2_2_0.RefreshMode;
import frk.gpssimulator.model.Point;
import frk.gpssimulator.model.PositionInfo;
import frk.gpssimulator.service.KmlService;

/**
 * KML utility functions.
 * Each thread that utilizes this class should instantiate a new instance of it because jaxb marshal/unmarshalling is
 * not thread safe.
 * @author faram
 * @author Gunnar Hillert
 */
@Service
public class DefaultKmlService implements KmlService {

    public static final String KML_POSITION_FILE_NAME = "pos";
    public static final String KML_POSITION_FILE_SUFFIX = ".xml";

    @Autowired
    private Marshaller marshaller;

    @Override
    public final void setupKmlIntegration(Set<Long> intanceIds, Point lookAtPoint) {
        Assert.notEmpty(intanceIds);
        Assert.isTrue(intanceIds.size() >= 1);

        File f = new File("gps.kml");

        Kml kml = KmlFactory.createKml();
        Folder folder = KmlFactory.createFolder();
        folder.setOpen(true);
        folder.setName("Contains GPS Coordinates");
        kml.setFeature(folder);

        final LookAt lookAt = KmlFactory.createLookAt();
        lookAt.setLatitude(lookAtPoint.getLatitude());
        lookAt.setLongitude(lookAtPoint.getLongitude());
        lookAt.setAltitude(8000);
        lookAt.setAltitudeMode(AltitudeMode.ABSOLUTE);
        ;
        folder.setAbstractView(lookAt);

        for (long instanceId : intanceIds) {
            Link link = KmlFactory.createLink();
            link.setHref(KML_POSITION_FILE_NAME + instanceId + KML_POSITION_FILE_SUFFIX);
            link.setRefreshMode(RefreshMode.ON_INTERVAL);
            link.setRefreshInterval(1.0);

            NetworkLink networkLink = KmlFactory.createNetworkLink();
            networkLink.setName("GPS link " + instanceId);
            networkLink.setOpen(true);
            networkLink.setLink(link);
            folder.addToFeature(networkLink);
        }

        final OutputStream out;

        try {
            out = new FileOutputStream(f);
        } catch (FileNotFoundException e) {
            throw new IllegalStateException(e);
        }

        try {
            marshaller.marshal(kml, new StreamResult(out));
        } catch (XmlMappingException | IOException e) {
            throw new IllegalStateException(e);
        }
    }

    /* (non-Javadoc)
     * @see frk.gpssimulator.service.KmlService#createGpsKml(java.io.File)
     */
    @Override
    public final void setupKmlIntegration(Set<Long> intanceIds) {
        Point point = new Point(19.715370574287654, -155.94979094376782);
        setupKmlIntegration(intanceIds, point);
    }

    /* (non-Javadoc)
     * @see frk.gpssimulator.service.KmlService#createPosKml(frk.gpssimulator.model.PositionInfo)
     */
    @Override
    public void updatePosition(Long instanceId, PositionInfo position) {
        de.micromata.opengis.kml.v_2_2_0.Point point = KmlFactory.createPoint();
        Integer speedKph = 0;

        if (position != null) {
            Coordinate coordinate = KmlFactory.createCoordinate(position.getPosition().getLongitude(),
                    position.getPosition().getLatitude());
            point.getCoordinates().add(coordinate);
        } else {
            Coordinate coordinate = KmlFactory.createCoordinate(0, 0);
            point.getCoordinates().add(coordinate);
        }

        Placemark placemark = KmlFactory.createPlacemark();

        if (position != null) {
            Double speed = position.getSpeed();
            speedKph = (int) (speed * 3600 / 1000);
        } else {
            speedKph = 0;
        }

        placemark.setName(speedKph.toString() + " kph");
        placemark.setGeometry(point);

        final Kml kml = KmlFactory.createKml();
        kml.setFeature(placemark);

        OutputStream out;
        try {
            out = new FileOutputStream(KML_POSITION_FILE_NAME + instanceId + KML_POSITION_FILE_SUFFIX);
        } catch (FileNotFoundException e) {
            throw new IllegalStateException(e);
        }
        try {
            marshaller.marshal(kml, new StreamResult(out));
        } catch (XmlMappingException | IOException e) {
            throw new IllegalStateException(e);
        }
    }
}