@Test
public void testSelectParams() {
List<String> stats = new ArrayList<String>();
stats.add("average");
stats.add("min");
stats.add("max");
Set<BasicRollupsOutputSerializer.MetricStat> filters =
PlotRequestParser.getStatsToFilter(stats);
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.AVERAGE));
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.MIN));
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.MAX));
// Alternate comma delimited notation
stats = new ArrayList<String>();
stats.add("average,min,max");
filters = PlotRequestParser.getStatsToFilter(stats);
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.AVERAGE));
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.MIN));
Assert.assertTrue(filters.contains(BasicRollupsOutputSerializer.MetricStat.MAX));
}
@Override
public void handle(ChannelHandlerContext ctx, HttpRequest request) {
Tracker.getInstance().track(request);
final String tenantId = request.getHeader("tenantId");
if (!(request instanceof HTTPRequestWithDecodedQueryParams)) {
sendResponse(
ctx, request, "Missing query params: from, to, points", HttpResponseStatus.BAD_REQUEST);
return;
}
final String body = request.getContent().toString(Constants.DEFAULT_CHARSET);
if (body == null || body.isEmpty()) {
sendResponse(
ctx,
request,
"Invalid body. Expected JSON array of metrics.",
HttpResponseStatus.BAD_REQUEST);
return;
}
List<String> locators = new ArrayList<String>();
try {
locators.addAll(getLocatorsFromJSONBody(tenantId, body));
} catch (Exception ex) {
log.debug(ex.getMessage(), ex);
sendResponse(ctx, request, ex.getMessage(), HttpResponseStatus.BAD_REQUEST);
return;
}
if (locators.size() > maxMetricsPerRequest) {
sendResponse(
ctx,
request,
"Too many metrics fetch in a single call. Max limit is " + maxMetricsPerRequest + ".",
HttpResponseStatus.BAD_REQUEST);
return;
}
HTTPRequestWithDecodedQueryParams requestWithParams =
(HTTPRequestWithDecodedQueryParams) request;
final Timer.Context httpBatchMetricsFetchTimerContext = httpBatchMetricsFetchTimer.time();
try {
RollupsQueryParams params = PlotRequestParser.parseParams(requestWithParams.getQueryParams());
Map<Locator, MetricData> results =
getRollupByGranularity(
tenantId,
locators,
params.getRange().getStart(),
params.getRange().getStop(),
params.getGranularity(tenantId));
JSONObject metrics = serializer.transformRollupData(results, params.getStats());
final JsonElement element = parser.parse(metrics.toString());
final String jsonStringRep = gson.toJson(element);
sendResponse(ctx, request, jsonStringRep, HttpResponseStatus.OK);
} catch (InvalidRequestException e) {
log.debug(e.getMessage());
sendResponse(ctx, request, e.getMessage(), HttpResponseStatus.BAD_REQUEST);
} catch (SerializationException e) {
log.debug(e.getMessage(), e);
sendResponse(ctx, request, e.getMessage(), HttpResponseStatus.INTERNAL_SERVER_ERROR);
} catch (Exception e) {
log.error(e.getMessage(), e);
sendResponse(ctx, request, e.getMessage(), HttpResponseStatus.INTERNAL_SERVER_ERROR);
} finally {
httpBatchMetricsFetchTimerContext.stop();
}
}