Instrument Kibana with APM RUM agent (elastic#44281)

* Instrument Kibana with APM RUM agent

* make route-change transaction work with properl url

* extract page-load transaction url from app link

* check if app is hidden and set active:false

* make distributed tracing work and merge config

* remove config/apm.js and address review

* address review comments

* add apm.js to build tassks

* move apm from dev to src

* add @types/hoist-non-react-statics which is required by react rum

* apply changes correctly from master

.gitignore

@@ -29,7 +29,6 @@ disabledPlugins
 webpackstats.json
 /config/*
 !/config/kibana.yml
-!/config/apm.js
 coverage
 selenium
 .babel_register_cache.json

package.json

@@ -115,6 +115,7 @@
   "dependencies": {
     "@babel/core": "^7.5.5",
     "@babel/register": "^7.7.0",
+    "@elastic/apm-rum": "^4.6.0",
     "@elastic/charts": "^18.1.1",
     "@elastic/datemath": "5.0.2",
     "@elastic/ems-client": "7.7.1",

src/apm.js

@@ -17,21 +17,81 @@
  * under the License.
  */
 
-const { existsSync } = require('fs');
 const { join } = require('path');
-const { name, version } = require('../package.json');
+const { readFileSync } = require('fs');
+const { execSync } = require('child_process');
+const merge = require('lodash.merge');
+const { name, version, build } = require('../package.json');
 
-module.exports = function(serviceName = name) {
-  if (process.env.kbnWorkerType === 'optmzr') return;
+const ROOT_DIR = join(__dirname, '..');
+
+function gitRev() {
+  try {
+    return execSync('git rev-parse --short HEAD', {
+      encoding: 'utf-8',
+      stdio: ['ignore', 'pipe', 'ignore'],
+    }).trim();
+  } catch (e) {
+    return null;
+  }
+}
+
+function devConfig() {
+  try {
+    const apmDevConfigPath = join(ROOT_DIR, 'config', 'apm.dev.js');
+    return require(apmDevConfigPath); // eslint-disable-line import/no-dynamic-require
+  } catch (e) {
+    return {};
+  }
+}
+
+const apmConfig = merge(
+  {
+    active: false,
+    serverUrl: 'https://f1542b814f674090afd914960583265f.apm.us-central1.gcp.cloud.es.io:443',
+    // The secretToken below is intended to be hardcoded in this file even though
+    // it makes it public. This is not a security/privacy issue. Normally we'd
+    // instead disable the need for a secretToken in the APM Server config where
+    // the data is transmitted to, but due to how it's being hosted, it's easier,
+    // for now, to simply leave it in.
+    secretToken: 'R0Gjg46pE9K9wGestd',
+    globalLabels: {},
+    breakdownMetrics: true,
+    centralConfig: false,
+    logUncaughtExceptions: true,
+  },
+  devConfig()
+);
+
+try {
+  const filename = join(ROOT_DIR, 'data', 'uuid');
+  apmConfig.globalLabels.kibana_uuid = readFileSync(filename, 'utf-8');
+} catch (e) {} // eslint-disable-line no-empty
 
-  const conf = {
-    serviceName: `${serviceName}-${version.replace(/\./g, '_')}`,
+const rev = gitRev();
+if (rev !== null) apmConfig.globalLabels.git_rev = rev;
+
+function getConfig(serviceName) {
+  return {
+    ...apmConfig,
+    ...{
+      serviceName: `${serviceName}-${version.replace(/\./g, '_')}`,
+    },
   };
+}
+
+/**
+ * Flag to disable APM RUM support on all kibana builds by default
+ */
+const isKibanaDistributable = Boolean(build && build.distributable === true);
 
-  const configFile = join(__dirname, '..', 'config', 'apm.js');
+module.exports = function(serviceName = name) {
+  if (process.env.kbnWorkerType === 'optmzr') return;
 
-  if (existsSync(configFile)) conf.configFile = configFile;
-  else conf.active = false;
+  const conf = getConfig(serviceName);
 
   require('elastic-apm-node').start(conf);
 };
+
+module.exports.getConfig = getConfig;
+module.exports.isKibanaDistributable = isKibanaDistributable;

src/core/public/injected_metadata/injected_metadata_service.ts

@@ -88,6 +88,9 @@ export interface InjectedMetadataParams {
         user?: Record<string, UserProvidedValues>;
       };
     };
+    apm: {
+      [key: string]: unknown;
+    };
   };
 }
 

src/dev/build/tasks/copy_source_task.js

@@ -46,7 +46,6 @@ export const CopySourceTask = {
         'typings/**',
         'webpackShims/**',
         'config/kibana.yml',
-        'config/apm.js',
         'tsconfig*.json',
         '.i18nrc.json',
         'kibana.d.ts',

src/legacy/ui/apm/index.js

@@ -0,0 +1,69 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { getConfig, isKibanaDistributable } from '../../../apm';
+import agent from 'elastic-apm-node';
+
+const apmEnabled = !isKibanaDistributable && process.env.ELASTIC_APM_ACTIVE === 'true';
+
+export function apmImport() {
+  return apmEnabled ? 'import { init } from "@elastic/apm-rum"' : '';
+}
+
+export function apmInit(config) {
+  return apmEnabled ? `init(${config})` : '';
+}
+
+export function getApmConfig(appMetadata) {
+  if (!apmEnabled) {
+    return {};
+  }
+  /**
+   * we use the injected app metadata from the server to extract the
+   * app URL path to be used for page-load transaction
+   */
+  const navLink = appMetadata.getNavLink();
+  const pageUrl = navLink ? navLink.toJSON().url : appMetadata._url;
+
+  const config = {
+    ...getConfig('kibana-frontend'),
+    ...{
+      active: true,
+      pageLoadTransactionName: pageUrl,
+    },
+  };
+  /**
+   * Get current active backend transaction to make distrubuted tracing
+   * work for rendering the app
+   */
+  const backendTransaction = agent.currentTransaction;
+
+  if (backendTransaction) {
+    const { sampled, traceId } = backendTransaction;
+    return {
+      ...config,
+      ...{
+        pageLoadTraceId: traceId,
+        pageLoadSampled: sampled,
+        pageLoadSpanId: backendTransaction.ensureParentId(),
+      },
+    };
+  }
+  return config;
+}

src/legacy/ui/public/routes/route_manager.js

@@ -56,7 +56,23 @@ export default function RouteManager() {
     }
   };
 
-  self.run = function($location, $route, $injector) {
+  self.run = function($location, $route, $injector, $rootScope) {
+    if (window.elasticApm && typeof window.elasticApm.startTransaction === 'function') {
+      /**
+       * capture route-change events as transactions which happens after
+       * the browser's on load event.
+       *
+       * In Kibana app, this logic would run after the boostrap js files gets
+       * downloaded and get associated with the page-load transaction
+       */
+      $rootScope.$on('$routeChangeStart', (_, nextRoute) => {
+        if (nextRoute.$$route) {
+          const name = nextRoute.$$route.originalPath;
+          window.elasticApm.startTransaction(name, 'route-change');
+        }
+      });
+    }
+
     self.getBreadcrumbs = () => {
       const breadcrumbs = parsePathToBreadcrumbs($location.path());
       const map = $route.current.mapBreadcrumbs;

src/legacy/ui/ui_bundles/app_entry_template.js

@@ -17,6 +17,8 @@
  * under the License.
  */
 
+import { apmImport, apmInit } from '../apm';
+
 export const appEntryTemplate = bundle => `
 /**
  * Kibana entry file
@@ -26,11 +28,22 @@ export const appEntryTemplate = bundle => `
  * context: ${bundle.getContext()}
  */
 
+// import global polyfills
+import Symbol_observable from 'symbol-observable';
+import 'core-js/stable';
+import 'regenerator-runtime/runtime';
+import 'custom-event-polyfill';
+import 'whatwg-fetch';
+import 'abortcontroller-polyfill';
+import 'childnode-remove-polyfill';
+${apmImport()}
 import { i18n } from '@kbn/i18n';
 import { CoreSystem } from '__kibanaCore__'
 
 const injectedMetadata = JSON.parse(document.querySelector('kbn-injected-metadata').getAttribute('data'));
 
+${apmInit('injectedMetadata.apm')}
+
 i18n.load(injectedMetadata.i18n.translationsUrl)
   .catch(e => e)
   .then((i18nError) => {

src/legacy/ui/ui_render/ui_render_mixin.js

@@ -26,6 +26,7 @@ import { AppBootstrap } from './bootstrap';
 // eslint-disable-next-line @kbn/eslint/no-restricted-paths
 import { fromRoot } from '../../../core/server/utils';
 import { DllCompiler } from '../../../optimize/dynamic_dll_plugin';
+import { getApmConfig } from '../apm';
 
 /**
  * @typedef {import('../../server/kbn_server').default} KbnServer
@@ -191,7 +192,10 @@ export function uiRenderMixin(kbnServer, server, config) {
       uiSettings: { asScopedToClient },
     } = kbnServer.newPlatform.__internals;
     const uiSettings = asScopedToClient(savedObjects.getClient(h.request));
-    const vars = await legacy.getVars(app.getId(), h.request, overrides);
+    const vars = await legacy.getVars(app.getId(), h.request, {
+      apmConfig: getApmConfig(app),
+      ...overrides,
+    });
     const content = await rendering.render(h.request, uiSettings, {
       app,
       includeUserSettings,

x-pack/legacy/plugins/apm/public/new-platform/plugin.tsx

@@ -7,6 +7,7 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 import { Route, Router, Switch } from 'react-router-dom';
+import { ApmRoute } from '@elastic/apm-rum-react';
 import styled from 'styled-components';
 import { i18n } from '@kbn/i18n';
 import { AlertType } from '../../../../../plugins/apm/common/alert_types';
@@ -62,7 +63,7 @@ const App = () => {
       <APMIndicesPermission>
         <Switch>
           {routes.map((route, i) => (
-            <Route key={i} {...route} />
+            <ApmRoute key={i} {...route} />
           ))}
         </Switch>
       </APMIndicesPermission>

x-pack/legacy/plugins/apm/typings/apm-rum-react.d.ts

@@ -0,0 +1,7 @@
+/*
+ * 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.
+ */
+
+declare module '@elastic/apm-rum-react';

x-pack/package.json

@@ -180,6 +180,7 @@
     "@babel/core": "^7.5.5",
     "@babel/register": "^7.7.0",
     "@babel/runtime": "^7.5.5",
+    "@elastic/apm-rum-react": "^0.3.2",
     "@elastic/datemath": "5.0.2",
     "@elastic/ems-client": "7.7.1",
     "@elastic/eui": "21.0.1",