AnomalyDetector: Need at least 1 labeled segment #667 (#668)

server/src/controllers/analytics_controller.ts

@@ -120,27 +120,38 @@ async function getQueryRange(
   analyticUnitId: AnalyticUnit.AnalyticUnitId,
   detectorType: AnalyticUnit.DetectorType
 ): Promise<TimeRange> {
-  if(
-    detectorType === AnalyticUnit.DetectorType.PATTERN ||
-    detectorType === AnalyticUnit.DetectorType.ANOMALY
-  ) {
-    const segments = await Segment.findMany(analyticUnitId, { $or: { labeled: true, deleted: true } });
+  let segments: Segment.Segment[];
+  switch(detectorType) {
+    case AnalyticUnit.DetectorType.PATTERN:
+      segments = await Segment.findMany(analyticUnitId, { $or: { labeled: true, deleted: true } });
       if(segments.length === 0) {
         throw new Error('Need at least 1 labeled segment');
       }
-
       return getQueryRangeForLearningBySegments(segments);
-  }
 
-  if(detectorType === AnalyticUnit.DetectorType.THRESHOLD) {
+    case AnalyticUnit.DetectorType.THRESHOLD:
+      const now = Date.now();
+      return {
+        from: now - 5 * SECONDS_IN_MINUTE * 1000,
+        to: now
+      };
+
+    case AnalyticUnit.DetectorType.ANOMALY:
+      segments = await Segment.findMany(analyticUnitId, { $or: { labeled: true, deleted: true } });
+      if(segments.length === 0) {
         const now = Date.now();
         return {
           from: now - 5 * SECONDS_IN_MINUTE * 1000,
           to: now
         };
       }
+      else {
+        return getQueryRangeForLearningBySegments(segments);
+      }
     
+    default:
       throw new Error(`Cannot get query range for detector type ${detectorType}`);
+  }
 }
 
 async function query(