private void datasetInfoXml(RadarType radarType, String pathInfo, PrintWriter pw)
throws IOException {
try {
pw.println(
"<catalog xmlns=\"http://www.unidata.ucar.edu/namespaces/thredds/InvCatalog/v1.0\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" name=\"Radar Data\" version=\"1.0.1\">\n");
// add service
pw.println(
" <service name=\"radarServer\" base=\"/thredds/radarServer/\" serviceType=\"DQC\" />\n");
pathInfo = pathInfo.replace("/dataset.xml", "");
pathInfo = pathInfo.replace("/catalog.xml", "");
if (pathInfo.startsWith("/")) pathInfo = pathInfo.substring(1);
for (int i = 0; i < datasets.size(); i++) {
InvDatasetScan ds = (InvDatasetScan) datasets.get(i);
if (!(pathInfo.equals(ds.getPath()))) {
continue;
}
pw.println(" <dataset ID=\"" + ds.getID() + "\" serviceName=\"radarServer\">");
pw.println(" <urlpath>" + ds.getPath() + "</urlpath>");
pw.println(" <dataType>" + ds.getDataType() + "</dataType>");
pw.println(" <dataFormat>" + ds.getDataFormatType() + "</dataFormat>");
pw.println(" <serviceName>radarServer</serviceName>");
pw.println(" <metadata inherited=\"true\">");
pw.println(" <documentation type=\"summary\">" + ds.getSummary() + "</documentation>");
CalendarDateRange dr = ds.getCalendarDateCoverage();
pw.println(" <TimeSpan>");
pw.print(" <start>");
if (pathInfo.contains("IDD")) {
pw.print(rm.getStartDateTime(ds.getPath()));
} else {
pw.print(dr.getStart().toString());
}
pw.println("</start>");
pw.println(" <end>" + dr.getEnd().toString() + "</end>");
pw.println(" </TimeSpan>");
ThreddsMetadata.GeospatialCoverage gc = ds.getGeospatialCoverage();
LatLonRect bb = new LatLonRect();
gc.setBoundingBox(bb);
pw.println(" <LatLonBox>");
pw.println(" <north>" + gc.getLatNorth() + "</north>");
pw.println(" <south>" + gc.getLatSouth() + "</south>");
pw.println(" <east>" + gc.getLonEast() + "</east>");
pw.println(" <west>" + gc.getLonWest() + "</west>");
pw.println(" </LatLonBox>");
ThreddsMetadata.Variables cvs = (ThreddsMetadata.Variables) ds.getVariables().get(0);
List vl = cvs.getVariableList();
pw.println(" <Variables>");
for (int j = 0; j < vl.size(); j++) {
ThreddsMetadata.Variable v = (ThreddsMetadata.Variable) vl.get(j);
pw.println(
" <variable name=\""
+ v.getName()
+ "\" vocabulary_name=\""
+ v.getVocabularyName()
+ "\" units=\""
+ v.getUnits()
+ "\" />");
}
pw.println(" </Variables>");
String[] stations = rm.stationsDS(radarType, dataLocation.get(ds.getPath()));
rm.printStations(stations, pw, radarType);
pw.println(" </metadata>");
pw.println(" </dataset>");
}
pw.println("</catalog>");
pw.flush();
} catch (Throwable e) {
log.error("RadarServer.datasetInfoXml", e);
}
return;
}
// get pathInfo and parmameters from servlet call
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
PrintWriter pw = null;
try {
long startms = System.currentTimeMillis();
if (cat == null || rm.nexradList == null) { // something major wrong
res.sendError(
HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
"radarServer Radar Station/Catalog initialization problem");
return;
}
// setup
String pathInfo = req.getPathInfo();
if (pathInfo == null) pathInfo = "";
RadarType radarType = RadarType.nexrad; // default
if (pathInfo.indexOf('/', 1) > 1) {
String rt = pathInfo.substring(1, pathInfo.indexOf('/', 1));
radarType = RadarType.valueOf(rt);
}
// default is xml, assume errors will be recorded by logger from this point
if (!pathInfo.endsWith("html")) {
pw = res.getWriter();
res.setContentType("text/xml; charset=iso-8859-1"); // default
}
// radar query
if (req.getQueryString() != null) {
// log.debug("RadarServer query ="+ req.getQueryString() );
if (log.isDebugEnabled())
log.debug("<documentation>\n" + req.getQueryString() + "</documentation>\n");
rm.radarQuery(radarType, req, res, pw);
if (log.isDebugEnabled())
log.debug("after doGet " + (System.currentTimeMillis() - startms));
pw.flush();
return;
}
// return radarCollections catalog xml or html
if (pathInfo.startsWith("/catalog.xml") || pathInfo.startsWith("/dataset.xml")) {
InvCatalogFactory factory = InvCatalogFactory.getDefaultFactory(false); // no validation
String catAsString = factory.writeXML(cat);
pw.println(catAsString);
res.setStatus(HttpServletResponse.SC_OK);
pw.flush();
return;
} else if (pathInfo.startsWith("/catalog.html") || pathInfo.startsWith("/dataset.html")) {
try {
int i =
HtmlWriter.getInstance().writeCatalog(req, res, cat, true); // show catalog as HTML
} catch (Exception e) {
log.error("Radar HtmlWriter failed ", e);
res.sendError(
HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
"radarServer HtmlWriter error " + pathInfo);
return;
}
return;
}
// level2 and level3 catalog/dataset
if (pathInfo.contains("level2/catalog.")
|| pathInfo.contains("level3/catalog.")
|| pathInfo.contains("level2/dataset.")
|| pathInfo.contains("level3/dataset.")) {
level2level3catalog(radarType, pathInfo, pw, req, res);
return;
}
// return stations of dataset
if (pathInfo.endsWith("stations.xml")) {
pathInfo = pathInfo.replace("/stations.xml", "");
Element rootElem = new Element("stationsList");
Document doc = new Document(rootElem);
doc = rm.stationsXML(radarType, doc, rootElem, pathInfo.substring(1));
XMLOutputter fmt = new XMLOutputter(Format.getPrettyFormat());
pw.println(fmt.outputString(doc));
pw.flush();
return;
}
// return specific dataset information, ie IDD
if (pathInfo.endsWith("dataset.xml") || pathInfo.endsWith("catalog.xml")) {
datasetInfoXml(radarType, pathInfo, pw);
return;
}
// needs work nobody using it now
// return Dataset information in html form format
if (pathInfo.endsWith("dataset.html") || pathInfo.endsWith("catalog.html")) {
datasetInfoHtml(radarType, pathInfo, pw, res);
return;
}
// mal formed request with no exceptions
res.sendError(HttpServletResponse.SC_NOT_FOUND);
} catch (FileNotFoundException e) {
if (!res.isCommitted()) res.sendError(HttpServletResponse.SC_NOT_FOUND);
} catch (Throwable e) {
log.error("RadarServer.doGet failed", e);
if (!res.isCommitted()) res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
}
} // end doGet
