at.uni_salzburg.cs.ckgroup.cscpp.engine.actions.Picture.java Source code

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Here is the source code for at.uni_salzburg.cs.ckgroup.cscpp.engine.actions.Picture.java

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/*
 * @(#) Picture.java
 *
 * This code is part of the CPCC project.
 * Copyright (c) 2012  Clemens Krainer
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package at.uni_salzburg.cs.ckgroup.cscpp.engine.actions;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;

import org.apache.log4j.Logger;
import org.json.simple.JSONObject;

import at.uni_salzburg.cs.ckgroup.cpcc.mapper.api.ISensorProxy;
import at.uni_salzburg.cs.ckgroup.cscpp.utils.FileUtils;

public class Picture extends AbstractAction {

    private static final Logger LOG = Logger.getLogger(Picture.class);

    private String filename = null;

    private File dataDir;

    public String getFilename() {
        return filename;
    }

    public void setFilename(String filename) {
        this.filename = filename;
    }

    public File getDataDir() {
        return dataDir;
    }

    public void setDataDir(File dataDir) {
        this.dataDir = dataDir;
    }

    @Override
    protected boolean retrieveValue(ISensorProxy sprox) {
        InputStream inStream = sprox.getSensorValueAsStream(ISensorProxy.SENSOR_NAME_PHOTO);
        if (inStream == null) {
            return false;
        }

        try {
            File f = File.createTempFile("img", ".png", dataDir);
            setFilename(f.getName());
            FileOutputStream outStream = new FileOutputStream(f);
            FileUtils.copyStream(inStream, outStream, true);
            return true;
        } catch (IOException e) {
            LOG.error("Reading sensor " + ISensorProxy.SENSOR_NAME_PHOTO, e);
        }

        return false;
    }

    @Override
    public String toString() {
        if (isComplete()) {
            return String.format(Locale.US, "Picture (%d, \"%s\")", getTimestamp(), getFilename());
        }
        return "Picture";
    }

    @SuppressWarnings("unchecked")
    @Override
    public String toJSONString() {
        JSONObject o = new JSONObject();
        o.put("type", ISensorProxy.SENSOR_NAME_PHOTO);
        if (getTimestamp() != 0) {
            o.put("time", getTimestamp());
            o.put("value", getFilename());
        }
        return o.toJSONString();
    }
}