@RequestMapping(
value = "/{timeseriesId}/getData",
produces = {"image/png"},
method = GET)
public void getTimeseriesChart(
HttpServletResponse response,
@PathVariable String timeseriesId,
@RequestParam(required = false) MultiValueMap<String, String> query)
throws Exception {
checkIfUnknownTimeseries(timeseriesId);
IoParameters map = createFromQuery(query);
TimeseriesMetadataOutput metadata = timeseriesMetadataService.getParameter(timeseriesId, map);
RenderingContext context =
createContextForSingleTimeseries(metadata, map.getStyle(), map.getTimespan());
context.setDimensions(map.getChartDimension());
UndesignedParameterSet parameters = createForSingleTimeseries(timeseriesId, map.getTimespan());
checkAgainstTimespanRestriction(parameters.getTimespan());
parameters.setGeneralize(map.isGeneralize());
parameters.setBase64(map.isBase64());
parameters.setExpanded(map.isExpanded());
IoHandler renderer = IoFactory.createWith(map).createIOHandler(context);
handleBinaryResponse(response, parameters, renderer);
}
@RequestMapping(
value = "/getData",
produces = {"application/pdf"},
method = POST)
public void getTimeseriesCollectionReport(
HttpServletResponse response, @RequestBody DesignedParameterSet requestParameters)
throws Exception {
checkIfUnknownTimeseries(requestParameters.getTimeseries());
IoParameters map = createFromQuery(requestParameters);
UndesignedParameterSet parameters = createFromDesignedParameters(requestParameters);
checkAgainstTimespanRestriction(parameters.getTimespan());
parameters.setGeneralize(map.isGeneralize());
parameters.setExpanded(map.isExpanded());
String[] timeseriesIds = parameters.getTimeseries();
TimeseriesMetadataOutput[] timeseriesMetadatas =
timeseriesMetadataService.getParameters(timeseriesIds, map);
RenderingContext context = createContextWith(requestParameters, timeseriesMetadatas);
IoHandler renderer =
IoFactory.createWith(map).forMimeType(APPLICATION_PDF).createIOHandler(context);
handleBinaryResponse(response, parameters, renderer);
}
@RequestMapping(
value = "/{timeseriesId}/getData",
produces = {"application/json"},
method = GET)
public ModelAndView getTimeseriesData(
HttpServletResponse response,
@PathVariable String timeseriesId,
@RequestParam(required = false) MultiValueMap<String, String> query) {
checkIfUnknownTimeseries(timeseriesId);
IoParameters map = createFromQuery(query);
Interval timespan = map.getTimespan();
checkAgainstTimespanRestriction(timespan.toString());
UndesignedParameterSet parameters = createForSingleTimeseries(timeseriesId, timespan);
parameters.setGeneralize(map.isGeneralize());
parameters.setExpanded(map.isExpanded());
// TODO add paging
TvpDataCollection timeseriesData = getTimeseriesData(parameters);
TimeseriesDataCollection<?> formattedDataCollection = format(timeseriesData, map.getFormat());
if (map.isExpanded()) {
return new ModelAndView().addObject(formattedDataCollection.getTimeseriesOutput());
}
Object formattedTimeseries = formattedDataCollection.getAllTimeseries().get(timeseriesId);
return new ModelAndView().addObject(formattedTimeseries);
}
@RequestMapping(
value = "/getData",
produces = {"application/json"},
method = POST)
public ModelAndView getTimeseriesCollectionData(
HttpServletResponse response, @RequestBody UndesignedParameterSet parameters)
throws Exception {
checkIfUnknownTimeseries(parameters.getTimeseries());
TvpDataCollection timeseriesData = getTimeseriesData(parameters);
TimeseriesDataCollection<?> formattedDataCollection =
format(timeseriesData, parameters.getFormat());
return new ModelAndView().addObject(formattedDataCollection.getTimeseriesOutput());
}
private TvpDataCollection getTimeseriesData(UndesignedParameterSet parameters) {
Stopwatch stopwatch = startStopwatch();
TvpDataCollection timeseriesData =
parameters.isGeneralize()
? composeDataService(timeseriesDataService).getTimeseriesData(parameters)
: timeseriesDataService.getTimeseriesData(parameters);
LOGGER.debug("Processing request took {} seconds.", stopwatch.stopInSeconds());
return timeseriesData;
}
/**
* @param response the response to write binary on.
* @param parameters the timeseries parameter to request raw data.
* @param renderer an output renderer.
* @throws InternalServerException if data processing fails for some reason.
*/
private void handleBinaryResponse(
HttpServletResponse response, UndesignedParameterSet parameters, IoHandler renderer) {
try {
renderer.generateOutput(getTimeseriesData(parameters));
if (parameters.isBase64()) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
renderer.encodeAndWriteTo(baos);
byte[] imageData = baos.toByteArray();
byte[] encode = Base64.encodeBase64(imageData);
response.getOutputStream().write(encode);
} else {
renderer.encodeAndWriteTo(response.getOutputStream());
}
} catch (IOException e) { // handled by BaseController
throw new InternalServerException("Error handling output stream.", e);
} catch (IoParseException e) { // handled by BaseController
throw new InternalServerException("Could not write binary to stream.", e);
}
}
