feat(auth): support clientmetadata for token refresh

packages/auth/__tests__/providers/cognito/refreshToken.test.ts

@@ -1,3 +1,6 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
 import { decodeJWT } from '@aws-amplify/core/internals/utils';
 
 import { refreshAuthTokens } from '../../../src/providers/cognito/utils/refreshAuthTokens';
@@ -60,6 +63,7 @@ describe('refreshToken', () => {
 		});
 
 		it('should refresh token', async () => {
+			const clientMetadata = { 'app-version': '1.0.0' };
 			const expectedOutput = {
 				accessToken: decodeJWT(mockAccessToken),
 				idToken: decodeJWT(mockAccessToken),
@@ -82,6 +86,7 @@ describe('refreshToken', () => {
 					},
 				},
 				username: mockedUsername,
+				clientMetadata,
 			});
 
 			// stringify and re-parse for JWT equality
@@ -93,6 +98,7 @@ describe('refreshToken', () => {
 				expect.objectContaining({
 					ClientId: 'aaaaaaaaaaaa',
 					RefreshToken: mockedRefreshToken,
+					ClientMetadata: clientMetadata,
 				}),
 			);
 		});

packages/auth/__tests__/providers/cognito/tokenOrchestrator.test.ts

@@ -151,4 +151,40 @@ describe('TokenOrchestrator', () => {
 			expect(tokens?.accessToken).toEqual(validAuthTokens.accessToken);
 		});
 	});
+
+	describe('setClientMetadataProvider', () => {
+		it('should use clientMetadataProvider for token refresh', async () => {
+			const clientMetadata = { 'app-version': '1.0.0' };
+			const clientMetadataProvider = () => Promise.resolve(clientMetadata);
+
+			mockTokenRefresher.mockResolvedValue({
+				accessToken: { payload: {} },
+				idToken: { payload: {} },
+				clockDrift: 0,
+				refreshToken: 'newRefreshToken',
+				username: 'testuser',
+			});
+
+			tokenOrchestrator.setTokenRefresher(mockTokenRefresher);
+			tokenOrchestrator.setAuthTokenStore(mockAuthTokenStore);
+			tokenOrchestrator.setClientMetadataProvider(clientMetadataProvider);
+
+			mockAuthTokenStore.loadTokens.mockResolvedValue({
+				accessToken: { payload: { exp: 1 } },
+				idToken: { payload: { exp: 1 } },
+				clockDrift: 0,
+				refreshToken: 'refreshToken',
+				username: 'testuser',
+			});
+			mockAuthTokenStore.getLastAuthUser.mockResolvedValue('testuser');
+
+			await tokenOrchestrator.getTokens({ forceRefresh: true });
+
+			expect(mockTokenRefresher).toHaveBeenCalledWith(
+				expect.objectContaining({
+					clientMetadata,
+				}),
+			);
+		});
+	});
 });

packages/auth/src/providers/cognito/tokenProvider/CognitoUserPoolsTokenProvider.ts

@@ -4,6 +4,7 @@
 import {
 	AuthConfig,
 	AuthTokens,
+	ClientMetadataProvider,
 	FetchAuthSessionOptions,
 	KeyValueStorageInterface,
 	defaultStorage,
@@ -38,6 +39,12 @@ export class CognitoUserPoolsTokenProvider
 		this.authTokenStore.setKeyValueStorage(keyValueStorage);
 	}
 
+	setClientMetadataProvider(
+		clientMetadataProvider: ClientMetadataProvider,
+	): void {
+		this.tokenOrchestrator.setClientMetadataProvider(clientMetadataProvider);
+	}
+
 	setAuthConfig(authConfig: AuthConfig) {
 		this.authTokenStore.setAuthConfig(authConfig);
 		this.tokenOrchestrator.setAuthConfig(authConfig);

packages/auth/src/providers/cognito/tokenProvider/TokenOrchestrator.ts

@@ -3,6 +3,7 @@
 import {
 	AuthConfig,
 	AuthTokens,
+	ClientMetadataProvider,
 	CognitoUserPoolConfig,
 	FetchAuthSessionOptions,
 	Hub,
@@ -19,7 +20,7 @@ import { assertServiceError } from '../../../errors/utils/assertServiceError';
 import { AuthError } from '../../../errors/AuthError';
 import { oAuthStore } from '../utils/oauth/oAuthStore';
 import { addInflightPromise } from '../utils/oauth/inflightPromise';
-import { CognitoAuthSignInDetails } from '../types';
+import { ClientMetadata, CognitoAuthSignInDetails } from '../types';
 
 import {
 	AuthTokenOrchestrator,
@@ -32,6 +33,7 @@ import {
 
 export class TokenOrchestrator implements AuthTokenOrchestrator {
 	private authConfig?: AuthConfig;
+	clientMetadataProvider?: ClientMetadataProvider;
 	tokenStore?: AuthTokenStore;
 	tokenRefresher?: TokenRefresher;
 	inflightPromise: Promise<void> | undefined;
@@ -94,6 +96,12 @@ export class TokenOrchestrator implements AuthTokenOrchestrator {
 		return this.tokenRefresher;
 	}
 
+	setClientMetadataProvider(
+		clientMetadataProvider: ClientMetadataProvider,
+	): void {
+		this.clientMetadataProvider = clientMetadataProvider;
+	}
+
 	async getTokens(
 		options?: FetchAuthSessionOptions,
 	): Promise<
@@ -130,6 +138,8 @@ export class TokenOrchestrator implements AuthTokenOrchestrator {
 			tokens = await this.refreshTokens({
 				tokens,
 				username,
+				clientMetadata:
+					options?.clientMetadata ?? (await this.clientMetadataProvider?.()),
 			});
 
 			if (tokens === null) {
@@ -147,16 +157,19 @@ export class TokenOrchestrator implements AuthTokenOrchestrator {
 	private async refreshTokens({
 		tokens,
 		username,
+		clientMetadata,
 	}: {
 		tokens: CognitoAuthTokens;
 		username: string;
+		clientMetadata?: ClientMetadata;
 	}): Promise<CognitoAuthTokens | null> {
 		try {
 			const { signInDetails } = tokens;
 			const newTokens = await this.getTokenRefresher()({
 				tokens,
 				authConfig: this.authConfig,
 				username,
+				clientMetadata,
 			});
 			newTokens.signInDetails = signInDetails;
 			await this.setTokens({ tokens: newTokens });

packages/auth/src/providers/cognito/tokenProvider/types.ts

@@ -3,21 +3,24 @@
 import {
 	AuthConfig,
 	AuthTokens,
+	ClientMetadataProvider,
 	FetchAuthSessionOptions,
 	KeyValueStorageInterface,
 	TokenProvider,
 } from '@aws-amplify/core';
 
-import { CognitoAuthSignInDetails } from '../types';
+import { ClientMetadata, CognitoAuthSignInDetails } from '../types';
 
 export type TokenRefresher = ({
 	tokens,
 	authConfig,
 	username,
+	clientMetadata,
 }: {
 	tokens: CognitoAuthTokens;
 	authConfig?: AuthConfig;
 	username: string;
+	clientMetadata?: ClientMetadata;
 }) => Promise<CognitoAuthTokens>;
 
 export type AuthKeys<AuthKey extends string> = Record<AuthKey, string>;
@@ -66,6 +69,9 @@ export interface AuthTokenOrchestrator {
 export interface CognitoUserPoolTokenProviderType extends TokenProvider {
 	setKeyValueStorage(keyValueStorage: KeyValueStorageInterface): void;
 	setAuthConfig(authConfig: AuthConfig): void;
+	setClientMetadataProvider(
+		clientMetadataProvider: ClientMetadataProvider,
+	): void;
 }
 
 export type CognitoAuthTokens = AuthTokens & {

packages/auth/src/providers/cognito/types/models.ts

@@ -38,7 +38,7 @@ export const cognitoHostedUIIdentityProviderMap: Record<AuthProvider, string> =
 /**
  * Arbitrary key/value pairs that may be passed as part of certain Cognito requests
  */
-export type ClientMetadata = Record<string, string>;
+export type { ClientMetadata } from '@aws-amplify/core';
 
 /**
  * Allowed values for preferredChallenge

packages/auth/src/providers/cognito/utils/refreshAuthTokens.ts

@@ -14,15 +14,18 @@ import { assertAuthTokensWithRefreshToken } from '../utils/types';
 import { AuthError } from '../../../errors/AuthError';
 import { createCognitoUserPoolEndpointResolver } from '../factories';
 import { createGetTokensFromRefreshTokenClient } from '../../../foundation/factories/serviceClients/cognitoIdentityProvider';
+import { ClientMetadata } from '../types';
 
 const refreshAuthTokensFunction: TokenRefresher = async ({
 	tokens,
 	authConfig,
 	username,
+	clientMetadata,
 }: {
 	tokens: CognitoAuthTokens;
 	authConfig?: AuthConfig;
 	username: string;
+	clientMetadata?: ClientMetadata;
 }): Promise<CognitoAuthTokens> => {
 	assertTokenProviderConfig(authConfig?.Cognito);
 	const { userPoolId, userPoolClientId, userPoolEndpoint } = authConfig.Cognito;
@@ -41,6 +44,7 @@ const refreshAuthTokensFunction: TokenRefresher = async ({
 			ClientId: userPoolClientId,
 			RefreshToken: tokens.refreshToken,
 			DeviceKey: tokens.deviceMetadata?.deviceKey,
+			ClientMetadata: clientMetadata,
 		},
 	);
 

packages/core/src/index.ts

@@ -20,6 +20,8 @@ export {
 	OAuthConfig,
 	CognitoUserPoolConfig,
 	JWT,
+	ClientMetadata,
+	ClientMetadataProvider,
 } from './singleton/Auth/types';
 export { decodeJWT } from './singleton/Auth/utils';
 export {

packages/core/src/singleton/Auth/types.ts

@@ -4,6 +4,16 @@
 import { StrictUnion } from '../../types';
 import { AtLeastOne } from '../types';
 
+/**
+ * Arbitrary key/value pairs that may be passed as part of certain Cognito requests
+ */
+export type ClientMetadata = Record<string, string>;
+
+/**
+ * Function type for providing client metadata for Cognito operations
+ */
+export type ClientMetadataProvider = () => Promise<ClientMetadata>;
+
 // From https://github.com/awslabs/aws-jwt-verify/blob/main/src/safe-json-parse.ts
 // From https://github.com/awslabs/aws-jwt-verify/blob/main/src/jwt-model.ts
 interface JwtPayloadStandardFields {
@@ -66,6 +76,7 @@ export interface TokenProvider {
 
 export interface FetchAuthSessionOptions {
 	forceRefresh?: boolean;
+	clientMetadata?: ClientMetadata;
 }
 
 export interface AuthTokens {