[Metrics UI] Performance improvements for Observability Homepage (#70869)

x-pack/plugins/infra/public/metrics_overview_fetchers.test.ts

@@ -29,11 +29,7 @@ describe('Metrics UI Observability Homepage Functions', () => {
     it('should return true when true', async () => {
       const { core, mockedGetStartServices } = setup();
       core.http.get.mockResolvedValue({
-        status: {
-          indexFields: [],
-          logIndicesExist: false,
-          metricIndicesExist: true,
-        },
+        hasData: true,
       });
       const hasData = createMetricsHasData(mockedGetStartServices);
       const response = await hasData();
@@ -43,11 +39,7 @@ describe('Metrics UI Observability Homepage Functions', () => {
     it('should return false when false', async () => {
       const { core, mockedGetStartServices } = setup();
       core.http.get.mockResolvedValue({
-        status: {
-          indexFields: [],
-          logIndicesExist: false,
-          metricIndicesExist: false,
-        },
+        hasData: false,
       });
       const hasData = createMetricsHasData(mockedGetStartServices);
       const response = await hasData();

x-pack/plugins/infra/public/metrics_overview_fetchers.ts

@@ -16,15 +16,16 @@ import {
 } from '../common/http_api/snapshot_api';
 import { SnapshotMetricType } from '../common/inventory_models/types';
 import { InfraClientCoreSetup } from './types';
-import { SourceResponse } from '../common/http_api/source_api';
 
 export const createMetricsHasData = (
   getStartServices: InfraClientCoreSetup['getStartServices']
 ) => async () => {
   const [coreServices] = await getStartServices();
   const { http } = coreServices;
-  const results = await http.get<SourceResponse>('/api/metrics/source/default/metrics');
-  return results.status.metricIndicesExist;
+  const results = await http.get<{ hasData: boolean }>(
+    '/api/metrics/source/default/metrics/hasData'
+  );
+  return results.hasData;
 };
 
 export const average = (values: number[]) => (values.length ? sum(values) / values.length : 0);

x-pack/plugins/infra/server/routes/source/index.ts

@@ -37,22 +37,21 @@ export const initSourceRoute = (libs: InfraBackendLibs) => {
       try {
         const { type, sourceId } = request.params;
 
-        const source = await libs.sources.getSourceConfiguration(
-          requestContext.core.savedObjects.client,
-          sourceId
-        );
+        const [source, logIndicesExist, metricIndicesExist, indexFields] = await Promise.all([
+          libs.sources.getSourceConfiguration(requestContext.core.savedObjects.client, sourceId),
+          libs.sourceStatus.hasLogIndices(requestContext, sourceId),
+          libs.sourceStatus.hasMetricIndices(requestContext, sourceId),
+          libs.fields.getFields(requestContext, sourceId, typeToInfraIndexType(type)),
+        ]);
+
         if (!source) {
           return response.notFound();
         }
 
         const status = {
-          logIndicesExist: await libs.sourceStatus.hasLogIndices(requestContext, sourceId),
-          metricIndicesExist: await libs.sourceStatus.hasMetricIndices(requestContext, sourceId),
-          indexFields: await libs.fields.getFields(
-            requestContext,
-            sourceId,
-            typeToInfraIndexType(type)
-          ),
+          logIndicesExist,
+          metricIndicesExist,
+          indexFields,
         };
 
         return response.ok({
@@ -65,4 +64,35 @@ export const initSourceRoute = (libs: InfraBackendLibs) => {
       }
     }
   );
+
+  framework.registerRoute(
+    {
+      method: 'get',
+      path: '/api/metrics/source/{sourceId}/{type}/hasData',
+      validate: {
+        params: schema.object({
+          sourceId: schema.string(),
+          type: schema.string(),
+        }),
+      },
+    },
+    async (requestContext, request, response) => {
+      try {
+        const { type, sourceId } = request.params;
+
+        const hasData =
+          type === 'metrics'
+            ? await libs.sourceStatus.hasMetricIndices(requestContext, sourceId)
+            : await libs.sourceStatus.hasLogIndices(requestContext, sourceId);
+
+        return response.ok({
+          body: { hasData },
+        });
+      } catch (error) {
+        return response.internalError({
+          body: error.message,
+        });
+      }
+    }
+  );
 };

x-pack/test/api_integration/apis/metrics_ui/http_source.ts

@@ -0,0 +1,79 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import expect from '@kbn/expect';
+
+import { SourceResponse } from '../../../../plugins/infra/server/lib/sources';
+import { FtrProviderContext } from '../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const esArchiver = getService('esArchiver');
+  const supertest = getService('supertest');
+  const fetchSource = async (): Promise<SourceResponse | undefined> => {
+    const response = await supertest
+      .get('/api/metrics/source/default/metrics')
+      .set('kbn-xsrf', 'xxx')
+      .expect(200);
+    return response.body;
+  };
+  const fetchHasData = async (
+    type: 'logs' | 'metrics'
+  ): Promise<{ hasData: boolean } | undefined> => {
+    const response = await supertest
+      .get(`/api/metrics/source/default/${type}/hasData`)
+      .set('kbn-xsrf', 'xxx')
+      .expect(200);
+    return response.body;
+  };
+
+  describe('Source API via HTTP', () => {
+    describe('8.0.0', () => {
+      before(() => esArchiver.load('infra/8.0.0/logs_and_metrics'));
+      after(() => esArchiver.unload('infra/8.0.0/logs_and_metrics'));
+      describe('/api/metrics/source/default/metrics', () => {
+        it('should just work', () => {
+          const resp = fetchSource();
+          return resp.then((data) => {
+            expect(data).to.have.property('source');
+            expect(data?.source.configuration.metricAlias).to.equal('metrics-*,metricbeat-*');
+            expect(data?.source.configuration.logAlias).to.equal(
+              'logs-*,filebeat-*,kibana_sample_data_logs*'
+            );
+            expect(data?.source.configuration.fields).to.eql({
+              container: 'container.id',
+              host: 'host.name',
+              message: ['message', '@message'],
+              pod: 'kubernetes.pod.uid',
+              tiebreaker: '_doc',
+              timestamp: '@timestamp',
+            });
+            expect(data).to.have.property('status');
+            expect(data?.status.metricIndicesExist).to.equal(true);
+            expect(data?.status.logIndicesExist).to.equal(true);
+          });
+        });
+      });
+      describe('/api/metrics/source/default/metrics/hasData', () => {
+        it('should just work', () => {
+          const resp = fetchHasData('metrics');
+          return resp.then((data) => {
+            expect(data).to.have.property('hasData');
+            expect(data?.hasData).to.be(true);
+          });
+        });
+      });
+      describe('/api/metrics/source/default/logs/hasData', () => {
+        it('should just work', () => {
+          const resp = fetchHasData('logs');
+          return resp.then((data) => {
+            expect(data).to.have.property('hasData');
+            expect(data?.hasData).to.be(true);
+          });
+        });
+      });
+    });
+  });
+}

x-pack/test/api_integration/apis/metrics_ui/index.js

@@ -21,5 +21,6 @@ export default function ({ loadTestFile }) {
     loadTestFile(require.resolve('./metrics_explorer'));
     loadTestFile(require.resolve('./feature_controls'));
     loadTestFile(require.resolve('./ip_to_hostname'));
+    loadTestFile(require.resolve('./http_source'));
   });
 }