💥 Remove remoteConfigurationId from RUM SDK (breaking change, v7)

BREAKING CHANGE: remoteConfigurationId and remoteConfigurationProxy are
removed from datadogRum.init() options.

Migration guide:
  // Before (v6)
  datadogRum.init({ remoteConfigurationId: 'xxx', ...options })

  // After (v7)
  import { fetchRemoteConfiguration } from '@datadog/browser-remote-config'
  const result = await fetchRemoteConfiguration({ applicationId, configId, site })
  if (result.ok) {
    datadogRum.init({ ...result.value.rum })
  }

The remote configuration logic now lives in @datadog/browser-remote-config,
giving customers more control: parallel fetching, custom caching, error handling.

Author: mormubis

packages/rum-core/src/boot/preStartRum.spec.ts

@@ -15,7 +15,6 @@ import {
 import type { Clock } from '@datadog/browser-core/test'
 import {
   callbackAddsInstrumentation,
-  interceptRequests,
   mockClock,
   mockEventBridge,
   mockSyntheticsWorkerValues,
@@ -401,36 +400,6 @@ describe('preStartRum', () => {
       })
     })
 
-    describe('remote configuration', () => {
-      let interceptor: ReturnType<typeof interceptRequests>
-
-      beforeEach(() => {
-        interceptor = interceptRequests()
-      })
-
-      it('should start with the remote configuration when a remoteConfigurationId is provided', (done) => {
-        interceptor.withFetch(() =>
-          Promise.resolve({
-            ok: true,
-            json: () => Promise.resolve({ rum: { sessionSampleRate: 50 } }),
-          })
-        )
-        const { strategy, doStartRumSpy } = createPreStartStrategyWithDefaults()
-        doStartRumSpy.and.callFake((configuration) => {
-          expect(configuration.sessionSampleRate).toEqual(50)
-          done()
-          return {} as StartRumResult
-        })
-        strategy.init(
-          {
-            ...DEFAULT_INIT_CONFIGURATION,
-            remoteConfigurationId: '123',
-          },
-          PUBLIC_API
-        )
-      })
-    })
-
     describe('plugins', () => {
       it('calls the onInit method on provided plugins', () => {
         const plugin = { name: 'a', onInit: jasmine.createSpy() }
@@ -494,10 +463,8 @@ describe('preStartRum', () => {
 
   describe('initConfiguration', () => {
     let initConfiguration: RumInitConfiguration
-    let interceptor: ReturnType<typeof interceptRequests>
 
     beforeEach(() => {
-      interceptor = interceptRequests()
       initConfiguration = { ...DEFAULT_INIT_CONFIGURATION, service: 'my-service', version: '1.4.2', env: 'dev' }
     })
 
@@ -525,28 +492,6 @@ describe('preStartRum', () => {
 
       expect(strategy.initConfiguration).toEqual(initConfiguration)
     })
-
-    it('returns the initConfiguration with the remote configuration when a remoteConfigurationId is provided', (done) => {
-      interceptor.withFetch(() =>
-        Promise.resolve({
-          ok: true,
-          json: () => Promise.resolve({ rum: { sessionSampleRate: 50 } }),
-        })
-      )
-      const { strategy, doStartRumSpy } = createPreStartStrategyWithDefaults()
-      doStartRumSpy.and.callFake(() => {
-        expect(strategy.initConfiguration?.sessionSampleRate).toEqual(50)
-        done()
-        return {} as StartRumResult
-      })
-      strategy.init(
-        {
-          ...DEFAULT_INIT_CONFIGURATION,
-          remoteConfigurationId: '123',
-        },
-        PUBLIC_API
-      )
-    })
   })
 
   describe('buffers API calls before starting RUM', () => {

packages/rum-core/src/boot/preStartRum.ts

@@ -23,7 +23,6 @@ import {
   buildAccountContextManager,
   buildGlobalContextManager,
   buildUserContextManager,
-  monitorError,
   sanitize,
   startTelemetry,
   TelemetryService,
@@ -32,11 +31,7 @@ import {
 import type { Hooks } from '../domain/hooks'
 import { createHooks } from '../domain/hooks'
 import type { RumConfiguration, RumInitConfiguration } from '../domain/configuration'
-import {
-  validateAndBuildRumConfiguration,
-  fetchAndApplyRemoteConfiguration,
-  serializeRumConfiguration,
-} from '../domain/configuration'
+import { validateAndBuildRumConfiguration, serializeRumConfiguration } from '../domain/configuration'
 import type { ViewOptions } from '../domain/view/trackViews'
 import type {
   DurationVital,
@@ -216,17 +211,7 @@ export function createPreStartStrategy(
 
       callPluginsMethod(initConfiguration.plugins, 'onInit', { initConfiguration, publicApi })
 
-      if (initConfiguration.remoteConfigurationId) {
-        fetchAndApplyRemoteConfiguration(initConfiguration, { user: userContext, context: globalContext })
-          .then((initConfiguration) => {
-            if (initConfiguration) {
-              doInit(initConfiguration, errorStack)
-            }
-          })
-          .catch(monitorError)
-      } else {
-        doInit(initConfiguration, errorStack)
-      }
+      doInit(initConfiguration, errorStack)
     },
 
     get initConfiguration() {

packages/rum-core/src/domain/configuration/configuration.spec.ts

@@ -624,8 +624,6 @@ describe('serializeRumConfiguration', () => {
       trackLongTasks: true,
       trackBfcacheViews: true,
       trackEarlyRequests: true,
-      remoteConfigurationId: '123',
-      remoteConfigurationProxy: 'config',
       plugins: [{ name: 'foo', getConfigurationTelemetry: () => ({ bar: true }) }],
       trackFeatureFlagsForEvents: ['vital'],
       profilingSampleRate: 42,
@@ -635,12 +633,7 @@ describe('serializeRumConfiguration', () => {
 
     type MapRumInitConfigurationKey<Key extends string> = Key extends keyof InitConfiguration
       ? MapInitConfigurationKey<Key>
-      : Key extends
-            | 'workerUrl'
-            | 'allowedTracingUrls'
-            | 'excludedActivityUrls'
-            | 'remoteConfigurationProxy'
-            | 'allowedGraphQlUrls'
+      : Key extends 'workerUrl' | 'allowedTracingUrls' | 'excludedActivityUrls' | 'allowedGraphQlUrls'
         ? `use_${CamelToSnakeCase<Key>}`
         : Key extends 'trackLongTasks'
           ? 'track_long_task' // We forgot the s, keeping this for backward compatibility
@@ -684,8 +677,6 @@ describe('serializeRumConfiguration', () => {
       compress_intake_requests: true,
       plugins: [{ name: 'foo', bar: true }],
       track_feature_flags_for_events: ['vital'],
-      remote_configuration_id: '123',
-      use_remote_configuration_proxy: true,
       profiling_sample_rate: 42,
     })
   })

packages/rum-core/src/domain/configuration/configuration.ts

@@ -96,20 +96,6 @@ export interface RumInitConfiguration extends InitConfiguration {
    */
   compressIntakeRequests?: boolean | undefined
 
-  /**
-   * [Internal option] Id of the remote configuration
-   *
-   * @internal
-   */
-  remoteConfigurationId?: string | undefined
-
-  /**
-   * [Internal option] set a proxy URL for the remote configuration
-   *
-   * @internal
-   */
-  remoteConfigurationProxy?: string | undefined
-
   // tracing options
   /**
    * A list of request URLs used to inject tracing headers.
@@ -126,7 +112,6 @@ export interface RumInitConfiguration extends InitConfiguration {
    * See [Connect RUM and Traces](https://docs.datadoghq.com/real_user_monitoring/platform/connect_rum_and_traces/?tab=browserrum) for further information.
    *
    * @category Tracing
-   * @defaultValue 100
    */
   traceSampleRate?: number | undefined
   /**
@@ -164,7 +149,6 @@ export interface RumInitConfiguration extends InitConfiguration {
    * See [Configure Your Setup For Browser RUM and Browser RUM & Session Replay Sampling](https://docs.datadoghq.com/real_user_monitoring/guide/sampling-browser-plans) for further information.
    *
    * @category Session Replay
-   * @defaultValue 0
    */
   sessionReplaySampleRate?: number | undefined
 
@@ -553,9 +537,7 @@ export function serializeRumConfiguration(configuration: RumInitConfiguration) {
       ...plugin.getConfigurationTelemetry?.(),
     })),
     track_feature_flags_for_events: configuration.trackFeatureFlagsForEvents,
-    remote_configuration_id: configuration.remoteConfigurationId,
     profiling_sample_rate: configuration.profilingSampleRate,
-    use_remote_configuration_proxy: !!configuration.remoteConfigurationProxy,
     ...baseSerializedConfiguration,
   } satisfies RawTelemetryConfiguration
 }

packages/rum-core/src/domain/configuration/index.ts

@@ -1,2 +1 @@
 export * from './configuration'
-export * from './remoteConfiguration'