I am trying to create a desktop application, which sends user files to Amazon S3, where the users can then sign in to a website to view/download their files. I have the desktop application working, it has the user sign in and upload the files to their own bucket. I also have a webpage where the user can sign in to a Cognito user that has permissions to download files from that bucket. I can't seem to link the Cognito user to their S3 permissions. All of the examples I have found involve linking the website to one bucket, and in this case, that bucket depends on the user they're signed in to. This attempt to list buckets returns "Error: Credential is missing"
AWS amplify authentication (this successfully returns the user when credentials are entered):
export class CognitoService {
private authenticationSubject: BehaviorSubject<any>;
constructor() {
Amplify.configure({
Auth: environment.cognito,
});
this.authenticationSubject = new BehaviorSubject<boolean>(false);
}
public signIn(user: IUser): Promise<any> {
return Auth.signIn(user.username, user.password)
.then(returnedUser => {
if (returnedUser.challengeName === 'NEW_PASSWORD_REQUIRED') {
Auth.completeNewPassword(returnedUser, user.password)
.then(user => {
return user
});
}
})
}
public getUser(): Promise<any> {
return Auth.currentUserInfo();
}
}
Get data (This request is unsuccessful at returning the S3 buckets)
export class DataComponent implements OnInit{
user: IUser;
constructor(private cognitoService: CognitoService, private s3Service: S3Service) {
this.user = {} as IUser;
}
public ngOnInit(): void {
this.cognitoService.getUser()
.then((user: any) => {
this.user = user.attributes;
});
}
public getBuckets(): void {
this.s3Service.getBuckets()
.then((response: any) => {
console.log(response)
})
}
}
S3 service used to get buckets (I suspect this is where changes are needed):
export class S3Service {
constructor() {
Amplify.configure({
Auth: environment.cognito,
});
}
public async getBuckets() {
const client = new S3Client({region: 'us-west-2'});
const input = {};
const command = new ListBucketsCommand(input);
const response = await client.send(command);
}
}
Environment:
export const environment = {
cognito: {
userPoolId: 'xxx',
userPoolWebClientId: 'xxx',
},
}
