将 Cognito 用户池与 Amazon Cognito 身份集成

Question

我正在使用 Xcode(Swift)。我尝试编写将注册、确认用户并将用户登录到用户池的代码。然后在成功登录后，我希望它与 Amazon Cognito Identity 相关联。基本上，我希望在用户池中拥有与用户一样多的身份 ID。

到目前为止，我能够注册、确认用户并登录（使用显式登录）。登录成功后，我正在尝试将此用户链接到 Cognito 身份池，以便可以为该用户生成唯一 ID。

目前，如果我以其他用户身份登录应用程序，则会为其分配与前一个用户相同的身份 ID。换句话说，无论我的用户池中有多少用户，在 AWS Cogntio 联合身份池端，我只有一个身份 ID。理想情况下，它应该为不同的用户创建单独的身份 ID。

以下是 didFinishLaunchingWithOptions 函数中 App 委托中的代码。

let serviceConfiguration = AWSServiceConfiguration(region: AWSRegionType.USEast1, credentialsProvider: nil)
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = serviceConfiguration
let configurationUserPool = AWSCognitoIdentityUserPoolConfiguration.init(clientId: "####", clientSecret: "####", poolId: "####")
AWSCognitoIdentityUserPool.registerCognitoIdentityUserPoolWithConfiguration(serviceConfiguration, userPoolConfiguration: configurationUserPool, forKey: "testPool")
self.userPool = AWSCognitoIdentityUserPool(forKey: "testPool")

以下是登录视图控制器中的代码。

@IBAction func signIn(sender: AnyObject) {

    let user = self.userPool.getUser(userName.text!)

    user.getSession(userName.text!, password: password.text!, validationData: nil, scopes: nil).continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: {
        (task:AWSTask!) -> AnyObject! in

        if task.error != nil {
            print(task.error)
        } else {
            print("Successful Login")

            let cp = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "######", identityProviderManager:self.userPool)
            let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: cp)

            AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration                
            cp.getIdentityId().continueWithBlock { (task: AWSTask!) -> AnyObject! in

                if (task.error != nil) {
                    print("Error: ")

                } else {
                    // the task result will contain the identity id
                    print("Success with id")
                    print(task.result)
                }
                return nil
            }

            dispatch_async(dispatch_get_main_queue()){
               // do stuff here ...
            }
        }
        return nil
    })
}

Answer 1

最后，我能够纠正这个问题。问题是每次我登录一个新用户时，我都在重置凭据提供程序。当我将它移至 App Delegate 时，它​​开始按应有的方式工作。

这不应该在signIn函数中，而应该是App Delegate。

let cp = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "######", identityProviderManager:self.userPool)
let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: cp)
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration                

正确的方式。

let serviceConfiguration = AWSServiceConfiguration(region: AWSRegionType.USEast1, credentialsProvider: nil)
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = serviceConfiguration
let configurationUserPool = AWSCognitoIdentityUserPoolConfiguration.init(clientId: "####", clientSecret: "####", poolId: "####")
AWSCognitoIdentityUserPool.registerCognitoIdentityUserPoolWithConfiguration(serviceConfiguration, userPoolConfiguration: configurationUserPool, forKey: "testPool")
self.userPool = AWSCognitoIdentityUserPool(forKey: "testPool")
self.cp = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "######", identityProviderManager:self.userPool)
let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: self.cp)
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration