/*
Final Output format, save information in DatasetEntry de
<dataset name="Level2_KFTG_20100121_0000.ar2v" ID="735519521"
urlPath="KFTG/20100121/Level2_KFTG_20100121_0000.ar2v">
<date type="start of ob">2010-01-21T00:00:00</date>
</dataset>
*/
private Boolean processQuery(
String dataset, QueryParams qp, String var, List<DatasetEntry> entries)
throws RadarServerException {
Boolean getAllTimes = true;
String yyyymmddStart = null;
String yyyymmddEnd = null;
String dateStart = null;
String dateEnd = null;
try {
if (!qp.time_start.equals(epicDateType)) {
getAllTimes = false;
yyyymmddStart = qp.time_start.toDateString();
yyyymmddStart = yyyymmddStart.replace("-", "");
yyyymmddEnd = qp.time_end.toDateString();
yyyymmddEnd = yyyymmddEnd.replace("-", "");
dateStart = yyyymmddStart + "_" + RadarServerUtil.hhmm(qp.time_start.toDateTimeString());
dateEnd = yyyymmddEnd + "_" + RadarServerUtil.hhmm(qp.time_end.toDateTimeString());
}
RadarDatasetCollection rdc = DatasetRepository.getRadarDatasetCollection(dataset, var);
if (rdc == null) {
qp.errs.append("Invalid dataset =").append(dataset);
qp.errs.append(" or var =").append(var);
return false;
}
StringBuffer time = new StringBuffer();
StringBuffer product = new StringBuffer();
StringBuffer url = new StringBuffer();
boolean isLevel2 = dataset.contains("level2");
String type = (isLevel2 ? "Level2" : "Level3");
String suffix = (isLevel2 ? ".ar2v" : ".nids");
Calendar cal = Calendar.getInstance(java.util.TimeZone.getTimeZone("GMT"));
Date now = cal.getTime();
String currentDay = dateFormat.format(now);
for (String stn : qp.stns) {
RadarStationCollection rsc = rdc.queryStation(stn, currentDay);
if (rsc == null) continue;
for (String day : rsc.getDays()) {
// check for valid day
if (!getAllTimes && !RadarServerUtil.isValidDay(day, yyyymmddStart, yyyymmddEnd))
continue;
ArrayList<String> tal;
if (rdc.isCaseStudy()) { //
tal = rsc.getHourMinute("all");
for (String prod : tal) {
// check times
if (!getAllTimes && !RadarServerUtil.isValidDate(prod, dateStart, dateEnd)) continue;
// save this entry
DatasetEntry de = new DatasetEntry();
int idx = prod.indexOf('/');
if (idx > 0) {
de.setName(prod.substring(idx + 1));
} else {
de.setName(prod);
}
de.setID(Integer.toString(prod.hashCode()));
url.setLength(0);
url.append(stn).append("/");
if (var != null) {
url.append(var).append("/");
}
url.append(prod);
de.setUrlPath(url.toString());
de.setDate(RadarServerUtil.getObTimeISO(prod));
entries.add(de);
}
continue;
} else {
tal = rsc.getHourMinute(day);
}
if (tal == null) continue;
for (String hm : tal) {
time.setLength(0);
time.append(day).append("_").append(hm);
if (!getAllTimes && !RadarServerUtil.isValidDate(time.toString(), dateStart, dateEnd))
continue;
// save this entry
DatasetEntry de = new DatasetEntry();
product.setLength(0);
product.append(type).append("_").append(rsc.getStnName()).append("_");
if (!isLevel2) product.append(var).append("_");
product.append(day).append("_").append(hm).append(suffix);
de.setName(product.toString());
de.setID(Integer.toString(product.toString().hashCode()));
url.setLength(0);
if (!isLevel2) {
url.append(var).append("/");
}
url.append(rsc.getStnName())
.append("/")
.append(day)
.append("/")
.append(product.toString());
de.setUrlPath(url.toString());
de.setDate(RadarServerUtil.getObTimeISO(product.toString()));
entries.add(de);
if (qp.hasTimePoint) break;
}
if (qp.hasTimePoint) break;
}
}
return true;
} catch (Throwable e) {
log.error("Invalid dataset =" + dataset + " or var =" + var, e);
log.info(
"handleRequestInternal(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_BAD_REQUEST, -1));
throw new RadarServerException("Invalid dataset =" + dataset + " or var =" + var);
}
}
// get/check/process query
public void radarQuery(HttpServletRequest req, HttpServletResponse res, Map<String, Object> model)
throws ServletException, IOException, RadarServerException {
// long startms = System.currentTimeMillis();
// long endms;
DatasetRepository.RadarType radarType = DatasetRepository.RadarType.nexrad;
// need to extract data according to the (dataset) given
String pathInfo = req.getPathInfo();
if (pathInfo == null) pathInfo = "";
if (pathInfo.startsWith("/")) pathInfo = pathInfo.substring(1);
try {
String rt = pathInfo.substring(0, pathInfo.indexOf('/', 1));
radarType = DatasetRepository.RadarType.valueOf(rt);
} catch (Exception e) {
log.info("Invalid dataset url reference " + pathInfo);
throw new RadarServerException("Invalid dataset url reference " + pathInfo);
}
Boolean level2 = pathInfo.contains("level2");
// parse the input
QueryParams qp = new QueryParams();
if (!qp.parseQuery(
req,
res,
new String[] {QueryParams.XML, QueryParams.HTML, QueryParams.RAW, QueryParams.NETCDF})) {
// log.error( "parseQuery Failed "+ qp.errs.toString() + req.getQueryString() );
// throw new RadarServerException( qp.errs.toString() );//+ req.getQueryString() );
return; // TODO: uncomment above 2 lines when QueryParams exception is fixed
}
// endms = System.currentTimeMillis();
// System.out.println( "after QueryParams "+ (endms - startms));
// startms = System.currentTimeMillis();
// check Query Params
if (!checkQueryParms(radarType, qp, level2)) {
log.error("checkQueryParms Failed " + qp.errs.toString() + req.getQueryString());
throw new RadarServerException(qp.errs.toString()); // + req.getQueryString() );
}
// endms = System.currentTimeMillis();
// System.out.println( "after checkQueryParms "+ (endms - startms));
// startms = System.currentTimeMillis();
// check type of output wanted XML html
qp.acceptType = qp.acceptType.replaceFirst(".*/", "");
// creates first part of catalog
if (!createHeader(radarType, qp, pathInfo, model)) {
log.error("Write Header Failed " + qp.errs.toString() + req.getQueryString());
throw new RadarServerException(qp.errs.toString()); // req.getQueryString() );
}
// endms = System.currentTimeMillis();
// System.out.println( "after writeHeader "+ (endms - startms));
// startms = System.currentTimeMillis();
// gets products according to stations, time, and variables
boolean dataFound = false;
List<DatasetEntry> entries = new ArrayList<DatasetEntry>();
if (qp.vars == null) {
dataFound = processQuery(pathInfo, qp, null, entries);
if (releaseDataset) DatasetRepository.removeRadarDatasetCollection(pathInfo, null);
} else {
int count = 0;
for (String var : qp.vars) {
dataFound = processQuery(pathInfo, qp, var, entries);
if (dataFound) count++;
if (releaseDataset) DatasetRepository.removeRadarDatasetCollection(pathInfo, var);
}
if (count > 0) dataFound = true;
}
// save entries
model.put("datasets", entries);
if (dataFound) {
model.put("documentation", Integer.toString(entries.size()) + " datasets found for query");
} else if (qp.errs.length() > 0) {
model.put("documentation", qp.errs.toString());
} else {
model.put("documentation", "No data available for station(s) and time range");
}
// endms = System.currentTimeMillis();
// System.out.println( "after radarQuery "+ (endms - startms));
// startms = System.currentTimeMillis();
} // end radarNexradQuery
