AWS::GameLift::Script - Amazon CloudFormation
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The AWS::GameLift::Script resource creates a new script record for your Realtime Servers script. Realtime scripts are JavaScript that provide configuration settings and optional custom game logic for your game. The script is deployed when you create a Realtime Servers fleet to host your game sessions. Script logic is executed during an active game session.


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


{ "Type" : "AWS::GameLift::Script", "Properties" : { "Name" : String, "StorageLocation" : S3Location, "Tags" : [ Tag, ... ], "Version" : String } }


Type: AWS::GameLift::Script Properties: Name: String StorageLocation: S3Location Tags: - Tag Version: String



A descriptive label that is associated with a script. Script names do not need to be unique.

Required: No

Type: String

Minimum: 1

Maximum: 1024

Update requires: No interruption


The location of the Amazon S3 bucket where a zipped file containing your Realtime scripts is stored. The storage location must specify the Amazon S3 bucket name, the zip file name (the "key"), and a role ARN that allows Amazon GameLift to access the Amazon S3 storage location. The S3 bucket must be in the same Region where you want to create a new script. By default, Amazon GameLift uploads the latest version of the zip file; if you have S3 object versioning turned on, you can use the ObjectVersion parameter to specify an earlier version.

Required: Yes

Type: S3Location

Update requires: No interruption


A list of labels to assign to the new script resource. Tags are developer-defined key-value pairs. Tagging Amazon resources are useful for resource management, access management and cost allocation. For more information, see Tagging Amazon Resources in the Amazon General Reference. Once the resource is created, you can use TagResource, UntagResource, and ListTagsForResource to add, remove, and view tags. The maximum tag limit may be lower than stated. See the Amazon General Reference for actual tagging limits.

Required: No

Type: Array of Tag

Maximum: 200

Update requires: No interruption


The version that is associated with a build or script. Version strings do not need to be unique.

Required: No

Type: String

Minimum: 1

Maximum: 1024

Update requires: No interruption

Return values


When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the ScriptId, such as script-1111aaaa-22bb-33cc-44dd-5555eeee66ff.

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


The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.


The unique Amazon Resource Name (ARN) for the script.


A time stamp indicating when this data object was created. Format is a number expressed in Unix time as milliseconds (for example "1469498468.057").


A unique identifier for a Realtime script.


The file size of the uploaded Realtime script, expressed in bytes. When files are uploaded from an S3 location, this value remains at "0".


Create a Realtime Servers Script

The following example creates a GameLift script named MyRealtimeScript. The zipped script files are located in an S3 bucket, specified by the S3Bucket and S3Key input parameters. The example also creates the Amazon Identity and Access Management role that GameLift assumes so that it has permissions to download the script files.


{ "Resources": { "IAMRole": { "Type": "AWS::IAM::Role", "Properties": { "AssumeRolePolicyDocument": { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "Service": [ "", "" ] }, "Action": "sts:AssumeRole" } ] }, "RoleName": "ScriptIAMRole", "Policies": [ { "PolicyName": "ScriptResourceIAMPolicy", "PolicyDocument": { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": [ "s3:GetObject", "s3:GetObjectVersion", "s3:GetObjectMetadata", "s3:*Object*" ], "Resource": [ "*" ] } ] } } ] } }, "ScriptResource": { "Type": "AWS::GameLift::Script", "Properties": { "Name": "MyRealtimeScript", "Version": "v1.0", "StorageLocation": { "Bucket": "MyBucketName", "Key": "", "RoleArn": { "Fn::GetAtt": [ "IAMRole", "Arn" ] } } } } } }


Resources: IAMRole: Type: AWS::IAM::Role Properties: AssumeRolePolicyDocument: Version: "2012-10-17" Statement: - Effect: "Allow" Principal: Service: ["", ""] Action: "sts:AssumeRole" RoleName: "ScriptIAMRole" Policies: - PolicyName: ScriptResourceIAMPolicy PolicyDocument: Version: '2012-10-17' Statement: - Effect: Allow Action: - "s3:GetObject" - "s3:GetObjectVersion" - "s3:GetObjectMetadata" - "s3:*Object*" Resource: - "*" ScriptResource: Type: AWS::GameLift::Script Properties: Name: MyRealtimeScript Version: v1.0 StorageLocation: Bucket: "MyBucketName" Key: "" RoleArn: !GetAtt IAMRole.Arn

See also