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Showing content from https://docs.aws.amazon.com/cognitoidentity/latest/APIReference/API_SetIdentityPoolRoles.html below:

SetIdentityPoolRoles - Amazon Cognito Federated Identities

SetIdentityPoolRoles

Sets the roles for an identity pool. These roles are used when making calls to GetCredentialsForIdentity action.

Note

Amazon Cognito evaluates AWS Identity and Access Management (IAM) policies in requests for this API operation. For this operation, you must use IAM credentials to authorize requests, and you must grant yourself the corresponding IAM permission in a policy.

Request Syntax

{
   "IdentityPoolId": "string",
   "RoleMappings": { 
      "string" : { 
         "AmbiguousRoleResolution": "string",
         "RulesConfiguration": { 
            "Rules": [ 
               { 
                  "Claim": "string",
                  "MatchType": "string",
                  "RoleARN": "string",
                  "Value": "string"
               }
            ]
         },
         "Type": "string"
      }
   },
   "Roles": { 
      "string" : "string" 
   }
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

IdentityPoolId

An identity pool ID in the format REGION:GUID.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 55.

Pattern: [\w-]+:[0-9a-f-]+

Required: Yes

RoleMappings

How users for a specific identity provider are to mapped to roles. This is a string to RoleMapping object map. The string identifies the identity provider, for example, graph.facebook.com or cognito-idp.us-east-1.amazonaws.com/us-east-1_abcdefghi:app_client_id.

Up to 25 rules can be specified per identity provider.

Type: String to RoleMapping object map

Map Entries: Maximum number of 10 items.

Key Length Constraints: Minimum length of 1. Maximum length of 128.

Required: No

Roles

The map of roles associated with this pool. For a given role, the key will be either "authenticated" or "unauthenticated" and the value will be the Role ARN.

Type: String to string map

Map Entries: Maximum number of 2 items.

Key Pattern: (un)?authenticated

Value Length Constraints: Minimum length of 20. Maximum length of 2048.

Required: Yes

Response Elements

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

Errors

For information about the errors that are common to all actions, see Common Errors.

ConcurrentModificationException

Thrown if there are parallel requests to modify a resource.

HTTP Status Code: 400

InternalErrorException

Thrown when the service encounters an error during processing the request.

HTTP Status Code: 500

InvalidParameterException

Thrown for missing or bad input parameter(s).

HTTP Status Code: 400

NotAuthorizedException

Thrown when a user is not authorized to access the requested resource.

HTTP Status Code: 400

ResourceConflictException

Thrown when a user tries to use a login which is already linked to another account.

HTTP Status Code: 400

ResourceNotFoundException

Thrown when the requested resource (for example, a dataset or record) does not exist.

HTTP Status Code: 400

TooManyRequestsException

Thrown when a request is throttled.

HTTP Status Code: 400