Here is an example CloudFormation template for creating a QuickSight data source with a Redshift input parameter:

AWSTemplateFormatVersion: '2010-09-09'

Parameters:
  DataSourceId:
    Type: String
  RedshiftClusterId:
    Type: String
  Database:
    Type: String
  ClusterUsername:
    Type: String
  ClusterPassword:
    Type: String
  CredentialUsername:
    Type: String
  CredentialPassword:
    Type: String
  Federated:
    Type: String
  VpcConnectionArn:
    Type: String

Resources:
  MyDataSource:
    Type: AWS::QuickSight::DataSource
    Properties:
      DataSourceId: !Ref DataSourceId
      Name: MyDataSource
      Type: REDSHIFT
      DataSourceParameters:
        RedshiftClusterId: !Ref RedshiftClusterId
        Database: !Ref Database
        ClusterUsername: !Ref ClusterUsername
        ClusterPassword: !Ref ClusterPassword
      Credentials:
        CredentialPair:
          Username: !Ref CredentialUsername
          Password: !Ref CredentialPassword
      Permissions:
        - Principal:
            Federated: !Ref Federated
          Actions:
            - "quicksight:DescribeDataSource"
            - "quicksight:DescribeDataSourcePermissions"
            - "quicksight:PassDataSource"
      VpcConnectionProperties:
        VpcConnectionArn: !Ref VpcConnectionArn

Outputs:
  DataSourceId:
    Value: !Ref DataSourceId
  RedshiftClusterId:
    Value: !Ref RedshiftClusterId
  Database:
    Value: !Ref Database
  ClusterUsername:
    Value: !Ref ClusterUsername
  CredentialUsername:
    Value: !Ref CredentialUsername
  Federated:
    Value: !Ref Federated
  VpcConnectionArn:
    Value: !Ref VpcConnectionArn

This template defines a resource of type AWS::QuickSight::DataSource with the following properties:

• DataSourceId: The ID of the data source. This is a required parameter that you must specify when creating the data source.
• Name: The name of the data source.
• Type: The type of the data source. In this case, we are using a Redshift data source, so the type is set to REDSHIFT.
• DataSourceParameters: The parameters for the data source. In this case, we are specifying the RedshiftClusterId, Database, ClusterUsername, and ClusterPassword parameters for connecting to a Redshift cluster.
• Credentials: The credentials for accessing the data source. In this case, we are specifying a CredentialPair with a Username and Password.
• Permissions: The permissions for the data source. In this case, we are giving the specified Principal (a federated user or group) permissions to DescribeDataSource, DescribeDataSourcePermissions, and PassDataSource on the data source.
• VPCConnectionProperties: The VPC connection properties for the data source. In this case, we are specifying the VpcConnectionArn to use for the connection.

To create a QuickSight data source with this template, you can use the aws cloudformation create-stack command and specify the template file as the input. You will also need to provide values for the parameters in the Parameters section of the template.

The template also defines a number of parameters that you must specify when creating the data source. These include the DataSourceId, RedshiftClusterId, Database, ClusterUsername, ClusterPassword, CredentialUsername, CredentialPassword, Federated, and VpcConnectionArn parameters.

The Outputs section defines a number of output values that can be referenced after the stack is created. In this case, the output values include the DataSourceId, RedshiftClusterId, Database, ClusterUsername, CredentialUsername, Federated, and VpcConnectionArn parameters that were used to create the data source.