gumga.framework.presentation.push.GumgaNotificationsServlet.java Source code

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Here is the source code for gumga.framework.presentation.push.GumgaNotificationsServlet.java

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package gumga.framework.presentation.push;

import gumga.framework.application.GumgaMessageService;
import gumga.framework.core.GumgaThreadScope;
import gumga.framework.core.QueryObject;
import gumga.framework.core.SearchResult;
import gumga.framework.domain.GumgaMessage;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class GumgaNotificationsServlet extends HttpServlet {

    private static final long cycleTime = 5 * 60 * 1000l;
    private static final long intervalTime = 1000l;
    private static final long cycles = cycleTime / intervalTime;

    @Autowired
    private GumgaMessageService messageService;

    @RequestMapping("/notifications/viewed")
    protected void viewd(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Long l = new Long(request.getParameter("id"));
        GumgaMessage gm = new GumgaMessage(l);
        messageService.delete(gm);

    }

    @RequestMapping("/notifications/source")
    protected void notifications(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/event-stream");
        response.setCharacterEncoding("UTF-8");
        PrintWriter writer = response.getWriter();
        QueryObject qo = new QueryObject();
        qo.setAq("destinationLogin='" + GumgaThreadScope.login.get() + "' and viewedIn is null ");
        qo.setAq("viewedIn is null ");
        qo.setPageSize(1000);

        for (int i = 0; i < cycles; i++) {
            SearchResult<GumgaMessage> pesquisa = messageService.pesquisa(qo);
            String message = "data: {" + " \"newMessagesCount\":" + pesquisa.getCount() + ",\"newMessages\":"
                    + pesquisa.getValues() + "}";
            writer.write(message + "\n\n");
            writer.flush();
            try {
                Thread.sleep(intervalTime);
            } catch (InterruptedException e) {
                log(e.getMessage());
            }
        }
        writer.close();
    }

    @RequestMapping("/notifications/dummy")
    protected void dummyHtml(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html");
        response.setCharacterEncoding("UTF-8");
        PrintWriter writer = response.getWriter();
        writer.print("" + "<!DOCTYPE HTML>\n" + "<html>\n" + "    <head>\n"
                + "        <title>Server-Sent Events Servlet example</title>\n"
                + "        <meta charset=\"utf-8\"/>\n" + "        <style>\n" + "            body {\n"
                + "                font-family: sans-serif;\n" + "            }\n" + "        </style>\n"
                + "    </head>\n" + "    <body>\n" + "\n" + "        New messages: <span id=\"foo\"></span>\n"
                + "        <br><br>\n" + "        Messages:<br> \n" + "        <pre id=\"messages\"></pre>\n" + "\n"
                + "\n" + "        <script>\n" + "            \n"
                + "            var params = getSearchParameters();\n" + "\n"
                + "            var eventSource = new EventSource(\"source?gumgaToken=\"+params['gumgaToken']);\n"
                + "            eventSource.onmessage = function (event) {\n"
                + "                //  console.log(event.data);\n"
                + "                var notifications = JSON.parse(event.data);\n"
                + "                document.getElementById('foo').innerHTML = notifications.newMessagesCount;\n"
                + "                \n" + "                var s='';\n" + "                \n"
                + "                for (i=0;i<notifications.newMessages.length;i++){\n"
                + "                    m=notifications.newMessages[i];\n"
                + "                    s+=m.senderLogin+\" \"+m.message+\"\\n\";\n" + "                }\n"
                + "                \n" + "                document.getElementById('messages').innerHTML = s;\n"
                + "                \n" + "            }\n" + "\n" + "            function getSearchParameters() {\n"
                + "                var prmstr = window.location.search.substr(1);\n"
                + "                return prmstr != null && prmstr != \"\" ? transformToAssocArray(prmstr) : {};\n"
                + "            }\n" + "\n" + "            function transformToAssocArray(prmstr) {\n"
                + "                var params = {};\n" + "                var prmarr = prmstr.split(\"&\");\n"
                + "                for (var i = 0; i < prmarr.length; i++) {\n"
                + "                    var tmparr = prmarr[i].split(\"=\");\n"
                + "                    params[tmparr[0]] = tmparr[1];\n" + "                }\n"
                + "                return params;\n" + "            }\n" + "\n" + "            \n" + "\n"
                + "        </script>\n" + "    </body>\n" + "</html> " + "");
        writer.close();
    }

}