Amplify-js: Amplify.configure()'s cognito call fails when user-signin does not support unauth users

[ceich]

Minor bug: shows up in the web console as a failed POST:

POST https://cognito-identity.us-east-2.amazonaws.com/ 400 (Bad Request)

Steps:

• Configure a MobileHub project with the User sign-in feature enabled and required.
• Add a web app to the project, initialize with create-react-app and awsmobile pull
• Add Amplify.configure(awsmobilejs) as usual.
• Run npm start and examine the web console.

I would expect Amplify to notice that sign-in is required, and not attempt any Cognito calls prior to sign-in.

Amplify 0.2.6 does not seem to use the aws_mandatory_sign_in element of aws-exports.js.

[powerful23]

@ceich thanks for your feedback!

[powerful23]

@ceich this bug has been fixed in the latest release. Please feel free to reopen the issue if neccessary.

[ceich]

I no longer see this at configure() time, but do see this and another error at federated login time. Do you want me to submit a new issue, or to reopen this one?

[crysislinux]

I do see this when call

AwsAuth.configure({
  identityPoolId: 'xxx',
  region: 'xxx',
  userPoolId: 'xxx',
  userPoolWebClientId: 'xxx',
  mandatorySignIn: false,
});

if I don't pass identityPoolId, I would not see the error. The problem is that I cannot know what's wrong here, the body of the 400 response is just an alien string to me

[crysislinux]

It seems that I should set mandatorySignIn to true, then the error will go.

[jnreynoso]

+1

[powerful23]

It's because if you have the identitypoolId then Amplify will automatically try to get a guest credentials for you which will lead to that http request failing because you didn't turn the mandatorySignIn to true.

[SplicePHP]

Could not find any the mandatory option.

This is what worked for me:
in: amplify/backend/auth/[PROJECT]/parameters.json
set: "allowUnauthenticatedIdentities": true

[powerful23]

@SplicePHP it's in the configuration: https://aws-amplify.github.io/amplify-js/media/authentication_guide.html#manual-setup