AWS::Cognito::UserPoolGroup

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A user pool group. Contains details about the group and the way that it contributes to IAM role decisions with identity pools. Identity pools can make decisions about the IAM role to assign based on groups: users get credentials for the role associated with their highest-priority group.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Type" : "AWS::Cognito::UserPoolGroup",
  "Properties" : {
      "Description" : String,
      "GroupName" : String,
      "Precedence" : Integer,
      "RoleArn" : String,
      "UserPoolId" : String
    }
}

YAML

Type: AWS::Cognito::UserPoolGroup
Properties:
  Description: String
  GroupName: String
  Precedence: Integer
  RoleArn: String
  UserPoolId: String

Properties

Description

A description of the group that you're creating.

Required: No

Type: String

Maximum: 2048

Update requires: No interruption

GroupName

A name for the group. This name must be unique in your user pool.

Required: No

Type: String

Pattern: [\p{L}\p{M}\p{S}\p{N}\p{P}]+

Minimum: 1

Maximum: 128

Update requires: Replacement

Precedence

A non-negative integer value that specifies the precedence of this group relative to the other groups that a user can belong to in the user pool. Zero is the highest precedence value. Groups with lower Precedence values take precedence over groups with higher or null Precedence values. If a user belongs to two or more groups, it is the group with the lowest precedence value whose role ARN is given in the user's tokens for the cognito:roles and cognito:preferred_role claims.

Two groups can have the same Precedence value. If this happens, neither group takes precedence over the other. If two groups with the same Precedence have the same role ARN, that role is used in the cognito:preferred_role claim in tokens for users in each group. If the two groups have different role ARNs, the cognito:preferred_role claim isn't set in users' tokens.

The default Precedence value is null. The maximum Precedence value is 2^31-1.

Required: No

Type: Integer

Minimum: 0

Update requires: No interruption

RoleArn

The Amazon Resource Name (ARN) for the IAM role that you want to associate with the group. A group role primarily declares a preferred role for the credentials that you get from an identity pool. Amazon Cognito ID tokens have a cognito:preferred_role claim that presents the highest-precedence group that a user belongs to. Both ID and access tokens also contain a cognito:groups claim that list all the groups that a user is a member of.

Required: No

Type: String

Pattern: arn:[\w+=/,.@-]+:[\w+=/,.@-]+:([\w+=/,.@-]*)?:[0-9]+:[\w+=/,.@-]+(:[\w+=/,.@-]+)?(:[\w+=/,.@-]+)?

Minimum: 20

Maximum: 2048

Update requires: No interruption

UserPoolId

The ID of the user pool where you want to create a user group.

Required: Yes

Type: String

Pattern: [\w-]+_[0-9a-zA-Z]+

Minimum: 1

Maximum: 55

Update requires: Replacement

Return values

Ref

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the name of the user pool group. For example: Admins.

For more information about using the Ref function, see Ref.

Examples

Creating a new user group in a user pool

The following example creates a group named "ExampleGroup" with an IAM role and a precedence of 1.

JSON

{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "Provision a new user group to an Amazon Cognito user pool\n",
    "Resources": {
        "ExampleGroup": {
            "Properties": {
                "Description": "My Example Group",
                "GroupName": "ExampleGroup",
                "Precedence": 1,
                "RoleArn": "arn:aws:iam::123456789012:role/my-test-cognito-role",
                "UserPoolId": "us-west-2_EXAMPLE"
            },
            "Type": "AWS::Cognito::UserPoolGroup"
        }
    }
}

YAML

AWSTemplateFormatVersion: "2010-09-09"

Description: |
  Provision a new user group to an Amazon Cognito user pool

Resources:
  ExampleGroup:
    Type: AWS::Cognito::UserPoolGroup
    Properties:
      Description: My Example Group
      GroupName: ExampleGroup
      Precedence: 1
      RoleArn: arn:aws:iam::123456789012:role/my-test-cognito-role
      UserPoolId: us-west-2_EXAMPLE