Elasticsearch: fix type-related bug within targetContainsTemplate (#69798)

* Elasticsearch: fix type-related bug within targetContainsTemplate

* Refactor to fix found regression

public/app/plugins/datasource/elasticsearch/datasource.test.ts

@@ -94,7 +94,6 @@ function getTestContext({
   data = { responses: [] },
   from = 'now-5m',
   jsonData,
-  database = '[test-]YYYY.MM.DD',
   fetchMockImplementation,
   templateSrvMock,
 }: TestContext = {}) {
@@ -127,6 +126,7 @@ function getTestContext({
           return text;
         }
       },
+      containsTemplate: jest.fn().mockImplementation((text?: string) => text?.includes('$') ?? false),
       getAdhocFilters: () => [],
     } as unknown as TemplateSrv);
 
@@ -1295,6 +1295,57 @@ const logsResponse = {
   },
 };
 
+describe('targetContainsTemplate', () => {
+  let ds: ElasticDatasource;
+  let target: ElasticsearchQuery;
+  beforeEach(() => {
+    const context = getTestContext();
+    ds = context.ds;
+    target = {
+      refId: 'test',
+      bucketAggs: [{ type: 'date_histogram', field: '@timestamp', id: '1' }],
+      metrics: [{ type: 'count', id: '1' }],
+      query: 'escape\\:test',
+    };
+  });
+  it('returns false when there is no variable in the query', () => {
+    expect(ds.targetContainsTemplate(target)).toBe(false);
+  });
+  it('returns true when there are variables in the query alias', () => {
+    target.alias = '$variable';
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+  });
+  it('returns true when there are variables in the query', () => {
+    target.query = '$variable:something';
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+  });
+  it('returns true when there are variables in the bucket aggregation', () => {
+    target.bucketAggs = [{ type: 'date_histogram', field: '$field', id: '1' }];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+    target.bucketAggs = [{ type: 'date_histogram', field: '@timestamp', id: '1', settings: { interval: '$interval' } }];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+  });
+  it('returns true when there are variables in the metric aggregation', () => {
+    target.metrics = [{ type: 'moving_avg', id: '1', settings: { window: '$window' } }];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+    target.metrics = [{ type: 'moving_avg', id: '1', field: '$field' }];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+    target.metrics = [{ type: 'extended_stats', id: '1', meta: { something: '$something' } }];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+  });
+  it('returns true when there are variables in an array inside an object in metrics', () => {
+    target.metrics = [
+      {
+        field: 'counter',
+        id: '1',
+        settings: { percents: ['20', '40', '$qqq'] },
+        type: 'percentiles',
+      },
+    ];
+    expect(ds.targetContainsTemplate(target)).toBe(true);
+  });
+});
+
 describe('ElasticDatasource using backend', () => {
   beforeEach(() => {
     console.error = jest.fn();

public/app/plugins/datasource/elasticsearch/datasource.ts

@@ -828,37 +828,23 @@ export class ElasticDatasource
     return false;
   }
 
-  private isPrimitive(obj: unknown) {
-    if (obj === null || obj === undefined) {
-      return true;
-    }
-    if (['string', 'number', 'boolean'].some((type) => type === typeof true)) {
-      return true;
-    }
-
-    return false;
-  }
-
   private objectContainsTemplate(obj: any) {
-    if (!obj) {
+    if (typeof obj === 'string') {
+      return this.templateSrv.containsTemplate(obj);
+    }
+    if (!obj || typeof obj !== 'object') {
       return false;
     }
 
     for (const key of Object.keys(obj)) {
-      if (this.isPrimitive(obj[key])) {
-        if (this.templateSrv.containsTemplate(obj[key])) {
-          return true;
-        }
-      } else if (Array.isArray(obj[key])) {
+      if (Array.isArray(obj[key])) {
         for (const item of obj[key]) {
           if (this.objectContainsTemplate(item)) {
             return true;
           }
         }
-      } else {
-        if (this.objectContainsTemplate(obj[key])) {
-          return true;
-        }
+      } else if (this.objectContainsTemplate(obj[key])) {
+        return true;
       }
     }