Add feature tracking (#366)

Author: itsgareth

src/datasource.ts

@@ -20,6 +20,7 @@ import API from './api';
 import { detectFieldType } from './detectFieldType';
 import { parseValues } from './parseValues';
 import { JsonApiDataSourceOptions, JsonApiQuery, Pair } from './types';
+import { trackRequest } from 'tracking';
 
 export class JsonDataSource extends DataSourceApi<JsonApiQuery, JsonApiDataSourceOptions> {
   api: API;
@@ -42,6 +43,8 @@ export class JsonDataSource extends DataSourceApi<JsonApiQuery, JsonApiDataSourc
   }
 
   async query(request: DataQueryRequest<JsonApiQuery>): Promise<DataQueryResponse> {
+    trackRequest(request);
+
     const promises = await request.targets
       .filter((query) => !query.hide)
       .flatMap((query) => this.doRequest(query, request.range, request.scopedVars));

src/tracking.ts

@@ -0,0 +1,13 @@
+import { DataQueryRequest } from '@grafana/data';
+import { reportInteraction } from '@grafana/runtime';
+import { JsonApiQuery } from 'types';
+
+export const trackRequest = (request: DataQueryRequest<JsonApiQuery>) => {
+  request.targets.forEach((target) => {
+    reportInteraction('grafana_json_query_executed', {
+      app: request.app,
+      cacheDurationSeconds: target.cacheDurationSeconds,
+      method: target.method,
+    });
+  });
+};