be.iminds.iot.dianne.builder.DianneLoader.java Source code

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Here is the source code for be.iminds.iot.dianne.builder.DianneLoader.java

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/*******************************************************************************
 * DIANNE  - Framework for distributed artificial neural networks
 * Copyright (C) 2015  iMinds - IBCN - UGent
 *
 * This file is part of DIANNE.
 *
 * DIANNE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Contributors:
 *     Tim Verbelen, Steven Bohez
 *******************************************************************************/
package be.iminds.iot.dianne.builder;

import java.io.IOException;

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

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

import be.iminds.iot.dianne.api.nn.module.dto.NeuralNetworkDTO;
import be.iminds.iot.dianne.api.repository.DianneRepository;
import be.iminds.iot.dianne.nn.util.DianneJSONConverter;

import com.google.gson.JsonArray;
import com.google.gson.JsonPrimitive;

@Component(service = { javax.servlet.Servlet.class }, property = { "alias:String=/dianne/load",
        "osgi.http.whiteboard.servlet.pattern=/dianne/load", "aiolos.proxy=false" }, immediate = true)
public class DianneLoader extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private DianneRepository repository;

    @Reference
    void setDianneRepository(DianneRepository repo) {
        this.repository = repo;
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("application/json");

        String action = request.getParameter("action");
        if ("list".equals(action)) {
            JsonArray names = new JsonArray();
            for (String name : repository.availableNeuralNetworks()) {
                names.add(new JsonPrimitive(name));
            }
            response.getWriter().write(names.toString());
            response.getWriter().flush();
        } else if ("load".equals(action)) {
            String name = request.getParameter("name");

            response.getWriter().write("{\"nn\":");
            NeuralNetworkDTO nn = repository.loadNeuralNetwork(name);
            String s = DianneJSONConverter.toJsonString(nn);
            response.getWriter().write(s);
            response.getWriter().write(", \"layout\":");
            String layout = repository.loadLayout(name);
            response.getWriter().write(layout);
            response.getWriter().write("}");
            response.getWriter().flush();
        }
    }
}