Kick start your query: keep pipe operations in the original query

public/app/plugins/datasource/loki/querybuilder/components/QueryPatternsModal.tsx

@@ -9,7 +9,7 @@ import { Button, Collapse, Modal, useStyles2 } from '@grafana/ui';
 import { LokiQuery } from '../../types';
 import { lokiQueryModeller } from '../LokiQueryModeller';
 import { buildVisualQueryFromString } from '../parsing';
-import { LokiQueryPattern, LokiQueryPatternType } from '../types';
+import { LokiOperationId, LokiQueryPattern, LokiQueryPatternType } from '../types';
 
 import { QueryPattern } from './QueryPattern';
 
@@ -23,6 +23,27 @@ type Props = {
  onAddQuery?: (query: LokiQuery) => void;
 };
 
+const keepOperations: string[] = [
+ LokiOperationId.Json,
+ LokiOperationId.Logfmt,
+ LokiOperationId.Pattern,
+ LokiOperationId.Unpack,
+ LokiOperationId.LineFormat,
+ LokiOperationId.LabelFormat,
+ LokiOperationId.Drop,
+ LokiOperationId.Keep,
+ LokiOperationId.LineContains,
+ LokiOperationId.LineContainsNot,
+ LokiOperationId.LineContainsCaseInsensitive,
+ LokiOperationId.LineMatchesRegex,
+ LokiOperationId.LineMatchesRegexNot,
+ LokiOperationId.LineFilterIpMatches,
+ LokiOperationId.LabelFilter,
+ LokiOperationId.LabelFilterNoErrors,
+ LokiOperationId.LabelFilterIpMatches,
+ LokiOperationId.Unwrap,
+];
+
 export const QueryPatternsModal = (props: Props) => {
  const { isOpen, onClose, onChange, onAddQuery, query, queries, app } = props;
  const [openTabs, setOpenTabs] = useState<string[]>([]);
@@ -47,7 +68,12 @@ export const QueryPatternsModal = (props: Props) => {
  createNewQuery: hasNewQueryOption && selectAsNewQuery,
  });
 
- visualQuery.query.operations = pattern.operations;
+ // Filter operations in the original query except those we configured to keep
+ visualQuery.query.operations = visualQuery.query.operations.filter(op => keepOperations.includes(op.id));
+ // Filter operations in the pattern that are present in the original query
+ const patternOperations = pattern.operations.filter(patternOp => visualQuery.query.operations.findIndex(op => op.id === patternOp.id) < 0);
+ visualQuery.query.operations = [...visualQuery.query.operations, ...patternOperations];
+
  if (hasNewQueryOption && selectAsNewQuery) {
  onAddQuery({
  ...query,