feat(flags): Add OpenFeature integration

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/basic/test.ts

@@ -0,0 +1,47 @@
+import { expect } from '@playwright/test';
+
+import { sentryTest } from '../../../../../utils/fixtures';
+
+import { envelopeRequestParser, shouldSkipFeatureFlagsTest, waitForErrorRequest } from '../../../../../utils/helpers';
+
+const FLAG_BUFFER_SIZE = 100; // Corresponds to constant in featureFlags.ts, in browser utils.
+
+sentryTest('Basic test with eviction, update, and no async tasks', async ({ getLocalTestUrl, page }) => {
+  if (shouldSkipFeatureFlagsTest()) {
+    sentryTest.skip();
+  }
+
+  await page.route('https://dsn.ingest.sentry.io/**/*', route => {
+    return route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify({ id: 'test-id' }),
+    });
+  });
+
+  const url = await getLocalTestUrl({ testDir: __dirname, skipDsnRouteHandler: true });
+  await page.goto(url);
+
+  await page.evaluate(bufferSize => {
+    const client = (window as any).initialize();
+    for (let i = 1; i <= bufferSize; i++) {
+      client.getBooleanValue(`feat${i}`, false);
+    }
+    client.getBooleanValue(`feat${bufferSize + 1}`, true); // eviction
+    client.getBooleanValue('feat3', true); // update
+  }, FLAG_BUFFER_SIZE);
+
+  const reqPromise = waitForErrorRequest(page);
+  await page.locator('#error').click();
+  const req = await reqPromise;
+  const event = envelopeRequestParser(req);
+
+  const expectedFlags = [{ flag: 'feat2', result: false }];
+  for (let i = 4; i <= FLAG_BUFFER_SIZE; i++) {
+    expectedFlags.push({ flag: `feat${i}`, result: false });
+  }
+  expectedFlags.push({ flag: `feat${FLAG_BUFFER_SIZE + 1}`, result: true });
+  expectedFlags.push({ flag: 'feat3', result: true });
+
+  expect(event.contexts?.flags?.values).toEqual(expectedFlags);
+});

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/errorHook/init.js

@@ -0,0 +1,20 @@
+import * as Sentry from '@sentry/browser';
+
+window.Sentry = Sentry;
+window.sentryOpenFeatureIntegration = Sentry.openFeatureIntegration();
+
+Sentry.init({
+  dsn: 'https://public@dsn.ingest.sentry.io/1337',
+  sampleRate: 1.0,
+  integrations: [window.sentryOpenFeatureIntegration],
+});
+
+window.initialize = () => {
+  return {
+    getBooleanValue(flag, value) {
+      let hook = new Sentry.OpenFeatureIntegrationHook();
+      hook.error({ flagKey: flag, defaultValue: false }, new Error('flag eval error'));
+      return value;
+    },
+  };
+};

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/errorHook/test.ts

@@ -0,0 +1,49 @@
+import { expect } from '@playwright/test';
+
+import { sentryTest } from '../../../../../utils/fixtures';
+
+import { envelopeRequestParser, shouldSkipFeatureFlagsTest, waitForErrorRequest } from '../../../../../utils/helpers';
+
+const FLAG_BUFFER_SIZE = 100; // Corresponds to constant in featureFlags.ts, in browser utils.
+
+sentryTest('Flag evaluation error hook', async ({ getLocalTestUrl, page }) => {
+  if (shouldSkipFeatureFlagsTest()) {
+    sentryTest.skip();
+  }
+
+  await page.route('https://dsn.ingest.sentry.io/**/*', route => {
+    return route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify({ id: 'test-id' }),
+    });
+  });
+
+  const url = await getLocalTestUrl({ testDir: __dirname, skipDsnRouteHandler: true });
+  await page.goto(url);
+
+  await page.evaluate(bufferSize => {
+    const client = (window as any).initialize();
+    for (let i = 1; i <= bufferSize; i++) {
+      client.getBooleanValue(`feat${i}`, false);
+    }
+    client.getBooleanValue(`feat${bufferSize + 1}`, true); // eviction
+    client.getBooleanValue('feat3', true); // update
+  }, FLAG_BUFFER_SIZE);
+
+  const reqPromise = waitForErrorRequest(page);
+  await page.locator('#error').click();
+  const req = await reqPromise;
+  const event = envelopeRequestParser(req);
+
+  // Default value is mocked as false -- these will all error and use default
+  // value
+  const expectedFlags = [{ flag: 'feat2', result: false }];
+  for (let i = 4; i <= FLAG_BUFFER_SIZE; i++) {
+    expectedFlags.push({ flag: `feat${i}`, result: false });
+  }
+  expectedFlags.push({ flag: `feat${FLAG_BUFFER_SIZE + 1}`, result: false });
+  expectedFlags.push({ flag: 'feat3', result: false });
+
+  expect(event.contexts?.flags?.values).toEqual(expectedFlags);
+});

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/init.js

@@ -0,0 +1,20 @@
+import * as Sentry from '@sentry/browser';
+
+window.Sentry = Sentry;
+window.sentryOpenFeatureIntegration = Sentry.openFeatureIntegration();
+
+Sentry.init({
+  dsn: 'https://public@dsn.ingest.sentry.io/1337',
+  sampleRate: 1.0,
+  integrations: [window.sentryOpenFeatureIntegration],
+});
+
+window.initialize = () => {
+  return {
+    getBooleanValue(flag, value) {
+      let hook = new Sentry.OpenFeatureIntegrationHook();
+      hook.after(null, { flagKey: flag, value: value });
+      return value;
+    },
+  };
+};

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/subject.js

@@ -0,0 +1,3 @@
+document.getElementById('error').addEventListener('click', () => {
+  throw new Error('Button triggered error');
+});

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/template.html

@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <button id="error">Throw Error</button>
+  </body>
+</html>

dev-packages/browser-integration-tests/suites/integrations/featureFlags/openfeature/withScope/test.ts

@@ -0,0 +1,65 @@
+import { expect } from '@playwright/test';
+
+import { sentryTest } from '../../../../../utils/fixtures';
+
+import { envelopeRequestParser, shouldSkipFeatureFlagsTest, waitForErrorRequest } from '../../../../../utils/helpers';
+
+import type { Scope } from '@sentry/browser';
+
+sentryTest('Flag evaluations in forked scopes are stored separately.', async ({ getLocalTestUrl, page }) => {
+  if (shouldSkipFeatureFlagsTest()) {
+    sentryTest.skip();
+  }
+
+  await page.route('https://dsn.ingest.sentry.io/**/*', route => {
+    return route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify({ id: 'test-id' }),
+    });
+  });
+
+  const url = await getLocalTestUrl({ testDir: __dirname, skipDsnRouteHandler: true });
+  await page.goto(url);
+
+  const forkedReqPromise = waitForErrorRequest(page, event => !!event.tags && event.tags.isForked === true);
+  const mainReqPromise = waitForErrorRequest(page, event => !!event.tags && event.tags.isForked === false);
+
+  await page.waitForFunction(() => {
+    const Sentry = (window as any).Sentry;
+    const errorButton = document.querySelector('#error') as HTMLButtonElement;
+    const client = (window as any).initialize();
+
+    client.getBooleanValue('shared', true);
+
+    Sentry.withScope((scope: Scope) => {
+      client.getBooleanValue('forked', true);
+      client.getBooleanValue('shared', false);
+      scope.setTag('isForked', true);
+      if (errorButton) {
+        errorButton.click();
+      }
+    });
+
+    client.getBooleanValue('main', true);
+    Sentry.getCurrentScope().setTag('isForked', false);
+    errorButton.click();
+    return true;
+  });
+
+  const forkedReq = await forkedReqPromise;
+  const forkedEvent = envelopeRequestParser(forkedReq);
+
+  const mainReq = await mainReqPromise;
+  const mainEvent = envelopeRequestParser(mainReq);
+
+  expect(forkedEvent.contexts?.flags?.values).toEqual([
+    { flag: 'forked', result: true },
+    { flag: 'shared', result: false },
+  ]);
+
+  expect(mainEvent.contexts?.flags?.values).toEqual([
+    { flag: 'shared', result: true },
+    { flag: 'main', result: true },
+  ]);
+});

packages/browser/src/index.ts

@@ -15,10 +15,7 @@ export {
   captureFeedback,
 } from '@sentry/core';
 
-export {
-  replayIntegration,
-  getReplay,
-} from '@sentry-internal/replay';
+export { replayIntegration, getReplay } from '@sentry-internal/replay';
 export type {
   ReplayEventType,
   ReplayEventWithTime,
@@ -36,17 +33,11 @@ export { replayCanvasIntegration } from '@sentry-internal/replay-canvas';
 import { feedbackAsyncIntegration } from './feedbackAsync';
 import { feedbackSyncIntegration } from './feedbackSync';
 export { feedbackAsyncIntegration, feedbackSyncIntegration, feedbackSyncIntegration as feedbackIntegration };
-export {
-  getFeedback,
-  sendFeedback,
-} from '@sentry-internal/feedback';
+export { getFeedback, sendFeedback } from '@sentry-internal/feedback';
 
 export * from './metrics';
 
-export {
-  defaultRequestInstrumentationOptions,
-  instrumentOutgoingRequests,
-} from './tracing/request';
+export { defaultRequestInstrumentationOptions, instrumentOutgoingRequests } from './tracing/request';
 export {
   browserTracingIntegration,
   startBrowserTracingNavigationSpan,
@@ -77,4 +68,6 @@ export type { Span } from '@sentry/types';
 export { makeBrowserOfflineTransport } from './transports/offline';
 export { browserProfilingIntegration } from './profiling/integration';
 export { spotlightBrowserIntegration } from './integrations/spotlight';
+export { copyFlagsFromScopeToEvent, insertFlagToScope } from './utils/featureFlags';
 export { launchDarklyIntegration, buildLaunchDarklyFlagUsedHandler } from './integrations/featureFlags/launchdarkly';
+export { openFeatureIntegration, OpenFeatureIntegrationHook } from './integrations/featureFlags/openfeature';

packages/browser/src/integrations/featureFlags/openfeature/index.ts

@@ -0,0 +1 @@
+export { openFeatureIntegration, OpenFeatureIntegrationHook } from './integration';

packages/browser/src/integrations/featureFlags/openfeature/integration.ts

@@ -0,0 +1,41 @@
+/**
+ * OpenFeature integration.
+ *
+ * Add the openFeatureIntegration() function call to your integration lists.
+ * Add the integration hook to your OpenFeature object.
+ *   - OpenFeature.getClient().addHooks(new OpenFeatureIntegrationHook());
+ */
+import type { Client, Event, EventHint, IntegrationFn } from '@sentry/types';
+import type { EvaluationDetails, HookContext, HookHints, JsonValue, OpenFeatureHook } from './types';
+
+import { defineIntegration } from '@sentry/core';
+import { copyFlagsFromScopeToEvent, insertFlagToScope } from '../../../utils/featureFlags';
+
+export const openFeatureIntegration = defineIntegration(() => {
+  return {
+    name: 'OpenFeature',
+
+    processEvent(event: Event, _hint: EventHint, _client: Client): Event {
+      return copyFlagsFromScopeToEvent(event);
+    },
+  };
+}) satisfies IntegrationFn;
+
+/**
+ * OpenFeature Hook class implementation.
+ */
+export class OpenFeatureIntegrationHook implements OpenFeatureHook {
+  /**
+   * Successful evaluation result.
+   */
+  public after(_hookContext: Readonly<HookContext<JsonValue>>, evaluationDetails: EvaluationDetails<JsonValue>): void {
+    insertFlagToScope(evaluationDetails.flagKey, evaluationDetails.value);
+  }
+
+  /**
+   * On error evaluation result.
+   */
+  public error(hookContext: Readonly<HookContext<JsonValue>>, _error: unknown, _hookHints?: HookHints): void {
+    insertFlagToScope(hookContext.flagKey, hookContext.defaultValue);
+  }
+}

packages/browser/src/integrations/featureFlags/openfeature/types.ts

@@ -0,0 +1,89 @@
+export type FlagValue = boolean | string | number | JsonValue;
+export type FlagValueType = 'boolean' | 'string' | 'number' | 'object';
+export type JsonArray = JsonValue[];
+export type JsonObject = { [key: string]: JsonValue };
+export type JsonValue = PrimitiveValue | JsonObject | JsonArray;
+export type Metadata = Record<string, string>;
+export type PrimitiveValue = null | boolean | string | number;
+export type FlagMetadata = Record<string, string | number | boolean>;
+export const StandardResolutionReasons = {
+  STATIC: 'STATIC',
+  DEFAULT: 'DEFAULT',
+  TARGETING_MATCH: 'TARGETING_MATCH',
+  SPLIT: 'SPLIT',
+  CACHED: 'CACHED',
+  DISABLED: 'DISABLED',
+  UNKNOWN: 'UNKNOWN',
+  STALE: 'STALE',
+  ERROR: 'ERROR',
+} as const;
+export enum ErrorCode {
+  PROVIDER_NOT_READY = 'PROVIDER_NOT_READY',
+  PROVIDER_FATAL = 'PROVIDER_FATAL',
+  FLAG_NOT_FOUND = 'FLAG_NOT_FOUND',
+  PARSE_ERROR = 'PARSE_ERROR',
+  TYPE_MISMATCH = 'TYPE_MISMATCH',
+  TARGETING_KEY_MISSING = 'TARGETING_KEY_MISSING',
+  INVALID_CONTEXT = 'INVALID_CONTEXT',
+  GENERAL = 'GENERAL',
+}
+export interface Logger {
+  error(...args: unknown[]): void;
+  warn(...args: unknown[]): void;
+  info(...args: unknown[]): void;
+  debug(...args: unknown[]): void;
+}
+export type ResolutionReason = keyof typeof StandardResolutionReasons | (string & Record<never, never>);
+export type EvaluationContextValue =
+  | PrimitiveValue
+  | Date
+  | { [key: string]: EvaluationContextValue }
+  | EvaluationContextValue[];
+export type EvaluationContext = {
+  targetingKey?: string;
+} & Record<string, EvaluationContextValue>;
+export interface ProviderMetadata extends Readonly<Metadata> {
+  readonly name: string;
+}
+export interface ClientMetadata {
+  readonly name?: string;
+  readonly domain?: string;
+  readonly version?: string;
+  readonly providerMetadata: ProviderMetadata;
+}
+export type HookHints = Readonly<Record<string, unknown>>;
+export interface HookContext<T extends FlagValue = FlagValue> {
+  readonly flagKey: string;
+  readonly defaultValue: T;
+  readonly flagValueType: FlagValueType;
+  readonly context: Readonly<EvaluationContext>;
+  readonly clientMetadata: ClientMetadata;
+  readonly providerMetadata: ProviderMetadata;
+  readonly logger: Logger;
+}
+export interface BeforeHookContext extends HookContext {
+  context: EvaluationContext;
+}
+export type ResolutionDetails<U> = {
+  value: U;
+  variant?: string;
+  flagMetadata?: FlagMetadata;
+  reason?: ResolutionReason;
+  errorCode?: ErrorCode;
+  errorMessage?: string;
+};
+export type EvaluationDetails<T extends FlagValue> = {
+  flagKey: string;
+  flagMetadata: Readonly<FlagMetadata>;
+} & ResolutionDetails<T>;
+export interface BaseHook<T extends FlagValue = FlagValue, BeforeHookReturn = unknown, HooksReturn = unknown> {
+  before?(hookContext: BeforeHookContext, hookHints?: HookHints): BeforeHookReturn;
+  after?(
+    hookContext: Readonly<HookContext<T>>,
+    evaluationDetails: EvaluationDetails<T>,
+    hookHints?: HookHints,
+  ): HooksReturn;
+  error?(hookContext: Readonly<HookContext<T>>, error: unknown, hookHints?: HookHints): HooksReturn;
+  finally?(hookContext: Readonly<HookContext<T>>, hookHints?: HookHints): HooksReturn;
+}
+export type OpenFeatureHook = BaseHook<FlagValue, void, void>;