151 lines
5.0 KiB
Java
151 lines
5.0 KiB
Java
package org.gcube.data.analysis.nlphub;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.xml.parsers.DocumentBuilderFactory;
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import org.apache.log4j.Logger;
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import org.gcube.data.analysis.nlphub.legacy.Constants;
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import org.gcube.data.analysis.nlphub.legacy.JsonManager;
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import org.gcube.data.analysis.nlphub.nlp.NlpAsyncNerRunner;
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import org.gcube.data.analysis.nlphub.nlp.NlpParameter;
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import org.gcube.data.analysis.nlphub.nlp.RunnerCommander;
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import org.w3c.dom.Document;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import org.xml.sax.InputSource;
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/**
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* Servlet implementation class NLPHub
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*/
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@WebServlet(asyncSupported = true, name = "NLPServlet", urlPatterns = { "/nlphub-servlet" })
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public class NLPHub extends HttpServlet {
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private Logger logger = Logger.getLogger(NLPHub.class.getSimpleName());
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private static final long serialVersionUID = 1L;
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public static final String service = "http://dataminer-prototypes.d4science.org/wps/";
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private String token; //= "df2cc5f5-63ee-48c1-b2a6-1210030c57b8-843339462";
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private boolean devMode = true;
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/**
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* @see HttpServlet#HttpServlet()
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*/
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public NLPHub() {
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super();
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// TODO Auto-generated constructor stub
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}
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/**
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* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
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* response)
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*/
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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doWork(request, response);
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}
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/**
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* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
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* response)
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*/
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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doWork(request, response);
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}
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private void doWork(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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if(request.getParameter("getInfo") != null) {
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getAlgorithmInfo(request, response);
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}
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else {
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runAlgorithms(request, response);
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}
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}
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private void getAlgorithmInfo(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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token = Constants.getToken(request, devMode);
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try {
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String dataMiner = request.getParameter("dataminer");
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String algId = request.getParameter("algId");
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HttpURLConnection connection = null;
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BufferedReader r = null;
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String algAbsrtact = "";
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PrintWriter writer = response.getWriter();
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response.setContentType("application/json;charset=UTF-8");
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try {
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String finalUrl = "https://" + dataMiner + NlpAsyncNerRunner.WPS_DESCRIBE_PROCESS_URL + "&gcube-token=" + token;
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finalUrl += "&lang=en-US&Identifier=" + algId;
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URL url = new URL(finalUrl);
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connection = (HttpURLConnection) url.openConnection();
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connection.setDoInput(true);
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connection.setDoOutput(true);
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connection.setUseCaches(false);
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connection.setRequestMethod("GET");
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r = new BufferedReader(new InputStreamReader(connection.getInputStream()));
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Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new InputSource(r));
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doc.getDocumentElement().normalize();
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NodeList nListInput = doc.getElementsByTagName("ows:Abstract");
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if(nListInput.getLength() <= 0) {
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algAbsrtact = "No description.";
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writer.println(new JsonManager().getErrorJsonResponse(algAbsrtact));
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}
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else {
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Node nodeAbstract = nListInput.item(0);
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algAbsrtact = nodeAbstract.getTextContent();
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writer.println(new JsonManager().getSuccessJsonResponse("" + algAbsrtact));
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}
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writer.close();
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} catch (Exception x) {
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logger.error(x.getLocalizedMessage());
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writer.println(new JsonManager().getErrorJsonResponse("" + x.getLocalizedMessage()));
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writer.close();
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} finally {
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try {
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if (r != null)
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r.close();
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if (connection != null)
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connection.disconnect();
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} catch (Exception e) {
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logger.error(e.getLocalizedMessage());
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}
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}
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} catch (Exception x) {
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logger.error(x.getLocalizedMessage());
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}
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}
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private void runAlgorithms(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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token = Constants.getToken(request, devMode);
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try {
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String dataMiner = request.getParameter("dataminer");
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String[] algs = request.getParameter("algs").split(",");
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for(int i=0; i<algs.length; i++) {
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algs[i] = algs[i].trim();
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}
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RunnerCommander commander = new RunnerCommander(dataMiner, algs, request.getParameter("plink"), request.getParameter("annotations"), token,
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response);
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commander.setSleepTime(100);
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commander.setMaxWaitingTime(90*1000);
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commander.startProcess();
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} catch (Exception x) {
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logger.error(x.getLocalizedMessage());
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}
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}
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}
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