Execute query if empty

Author: aleksmaus

src/datasource.ts

@@ -8,10 +8,15 @@ export class DataSource extends DataSourceWithBackend<PreqQuery, PreqDataSourceO
     super(instanceSettings);
     this.annotations = {
       getDefaultQuery() {
-        return {
+        const query = {
           ...DEFAULT_QUERY,
           queryType: 'annotations',
         };
+        // Ensure the annotation has a target property pointing to the query itself
+        return {
+          ...query,
+          target: query,
+        };
       },
     };
   }

src/types.ts

@@ -3,6 +3,7 @@ import { DataQuery } from '@grafana/schema';
 
 export interface PreqQuery extends DataQuery {
   queryText?: string;
+  target?: any; // For annotation queries that need a target property
 }
 
 export const DEFAULT_QUERY: Partial<PreqQuery> = {