feat(alerting): moved alerting models back to alerting package, models is more for storage dtos

pkg/tsdb/request.go

@@ -0,0 +1,51 @@
+package tsdb
+
+func HandleRequest(req *Request) (*Response, error) {
+	context := NewQueryContext(req.Queries, req.TimeRange)
+
+	batches, err := getBatches(req)
+	if err != nil {
+		return nil, err
+	}
+
+	currentlyExecuting := 0
+
+	for _, batch := range batches {
+		if len(batch.Depends) == 0 {
+			currentlyExecuting += 1
+			batch.Started = true
+			go batch.process(context)
+		}
+	}
+
+	response := &Response{}
+
+	for currentlyExecuting != 0 {
+		select {
+		case batchResult := <-context.ResultsChan:
+			currentlyExecuting -= 1
+
+			response.BatchTimings = append(response.BatchTimings, batchResult.Timings)
+
+			for refId, result := range batchResult.QueryResults {
+				context.Results[refId] = result
+			}
+
+			for _, batch := range batches {
+				// not interested in started batches
+				if batch.Started {
+					continue
+				}
+
+				if batch.allDependenciesAreIn(context) {
+					currentlyExecuting += 1
+					batch.Started = true
+					go batch.process(context)
+				}
+			}
+		}
+	}
+
+	response.Results = context.Results
+	return response, nil
+}