1 | package gov.va.med.edp.web.controller;
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2 |
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3 | import gov.va.med.edp.vo.BigBoardDebugInfoVO;
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4 | import gov.va.med.edp.web.view.XmlView;
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5 |
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6 | import javax.servlet.http.HttpServletRequest;
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7 | import javax.servlet.http.HttpServletResponse;
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8 |
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9 | import org.apache.log4j.Logger;
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10 | import org.springframework.beans.factory.InitializingBean;
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11 | import org.springframework.util.Assert;
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12 | import org.springframework.util.StringUtils;
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13 | import org.springframework.web.servlet.ModelAndView;
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14 | import org.springframework.web.servlet.support.WebContentGenerator;
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15 |
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16 | public class BigDisplayBoardController extends SiteCodeController implements InitializingBean {
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17 |
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18 | private static final String MACHINE_NAME_PARAM = SiteCodeController.MACHINE_NAME_PARAM;
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19 | public static final String MACHINE_NAME_HEADER = SiteCodeController.MACHINE_NAME_HEADER;
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20 |
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21 | protected static final String XML_VIEW = "xmlView";
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22 |
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23 | private static Logger log = Logger.getLogger(BigDisplayBoardController.class);
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24 |
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25 | public BigDisplayBoardController() {
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26 | setRequireSession(false);
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27 | setSupportedMethods(new String[]{WebContentGenerator.METHOD_POST, WebContentGenerator.METHOD_GET});
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28 | }
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29 |
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30 | public void afterPropertiesSet() throws Exception {
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31 | Assert.notNull(getSiteCodeDao(), "siteCodeDao is required");
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32 | Assert.notNull(getTrackingDao(), "trackingDao is required");
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33 | Assert.notNull(getServerPackageVersionDao(), "ServerPackageVersionDao is required");
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34 | }
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35 |
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36 | protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
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37 | String result = "";
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38 | //First attempt is to get the machineName from HTTP Header:EdisClientMachineName as decided
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39 | // this HTTP header is appended by the load balancer and the value of this header (the machine name)
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40 | //is parsed by the load balancer.
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41 | String machineName = parseCNFromHttpHeaders(request.getHeader(MACHINE_NAME_HEADER));
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42 |
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43 | if (StringUtils.hasText(machineName)){
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44 | clearRequestAndSession(request);
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45 | } else {
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46 | machineName = getMachineNameFromUserPrincipalOrSessionOrRequest(request);
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47 | }
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48 | debug("Machine name obtained from certificate/HTTP Header/request/session:" + machineName);
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49 | String siteCode = getSiteCodeDao().getSiteCode(machineName);
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50 |
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51 | if (!StringUtils.hasText(siteCode)){
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52 | String errorMsg = "No site code was found for the machine name: " + machineName;
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53 | return createErrorModelAndView(errorMsg);
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54 | }
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55 |
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56 | result = getTrackingDao().executeCommand(siteCode, "0", buildParameterMap(request,machineName));
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57 | if (isInitCommand(request))
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58 | result = appendSiteAndVistaLinkConnectionInfo(result, request, siteCode, machineName);
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59 | return createModelAndView(result, siteCode, machineName);
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60 | }
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61 |
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62 |
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63 | private void clearRequestAndSession(HttpServletRequest request) {
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64 | request.getSession().setAttribute(MACHINE_NAME_PARAM, null);
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65 | request.setAttribute(MACHINE_NAME_PARAM, null);
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66 | }
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67 |
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68 | private boolean isInitCommand(HttpServletRequest request) {
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69 | if (request.getParameter("command").equals("initDisplayBoard")) return true;
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70 | return false;
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71 | }
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72 |
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73 | protected ModelAndView createModelAndView(String result, String siteCode, String machineName) {
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74 | return new ModelAndView(XML_VIEW, XmlView.XML_FRAGMENT, result);
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75 | }
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76 |
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77 | private String appendSiteAndVistaLinkConnectionInfo(String result,HttpServletRequest request, String siteCode, String machineName) {
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78 | BigBoardDebugInfoVO vistalinkInfo = serverPackageVersionDao.getVistaLinkConnectionInfo(siteCode);
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79 | vistalinkInfo.setSiteId(siteCode);
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80 | vistalinkInfo.setMachineName(machineName);
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81 | result = result.concat(vistalinkInfo.toString());
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82 | return result;
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83 | }
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84 |
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85 | private void debug(String s) {
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86 | if (log.isDebugEnabled()){
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87 | log.debug(s);
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88 | }
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89 | }
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90 |
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91 |
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92 | }
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