amazonka-lambda-1.2.0: Amazon Lambda SDK.

Copyright(c) 2013-2015 Brendan Hay
LicenseMozilla Public License, v. 2.0.
MaintainerBrendan Hay <>
Portabilitynon-portable (GHC extensions)
Safe HaskellNone




Adds a permission to the access policy associated with the specified AWS Lambda function. In a "push event" model, the access policy attached to the Lambda function grants Amazon S3 or a user application permission for the Lambda 'lambda:Invoke' action. For information about the push model, see AWS Lambda: How it Works. Each Lambda function has one access policy associated with it. You can use the AddPermission API to add a permission to the policy. You have one access policy but it can have multiple permission statements.

This operation requires permission for the 'lambda:AddPermission' action.

See: AWS API Reference for AddPermission.


Creating a Request

addPermission Source

Creates a value of AddPermission with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

Request Lenses

apSourceAccount :: Lens' AddPermission (Maybe Text) Source

The AWS account ID (without a hyphen) of the source owner. For example, if the SourceArn identifies a bucket, then this is the bucket owner's account ID. You can use this additional condition to ensure the bucket you specify is owned by a specific account (it is possible the bucket owner deleted the bucket and some other AWS account created the bucket). You can also use this condition to specify all sources (that is, you don't specify the SourceArn) owned by a specific account.

apSourceARN :: Lens' AddPermission (Maybe Text) Source

This is optional; however, when granting Amazon S3 permission to invoke your function, you should specify this field with the bucket Amazon Resource Name (ARN) as its value. This ensures that only events generated from the specified bucket can invoke the function.

If you add a permission for the Amazon S3 principal without providing the source ARN, any AWS account that creates a mapping to your function ARN can send events to invoke your Lambda function from Amazon S3.

apFunctionName :: Lens' AddPermission Text Source

Name of the Lambda function whose access policy you are updating by adding a new permission.

You can specify an unqualified function name (for example, "Thumbnail") or you can specify Amazon Resource Name (ARN) of the function (for example, "arn:aws:lambda:us-west-2:account-id:function:ThumbNail"). AWS Lambda also allows you to specify only the account ID qualifier (for example, "account-id:Thumbnail"). Note that the length constraint applies only to the ARN. If you specify only the function name, it is limited to 64 character in length.

apStatementId :: Lens' AddPermission Text Source

A unique statement identifier.

apAction :: Lens' AddPermission Text Source

The AWS Lambda action you want to allow in this statement. Each Lambda action is a string starting with "lambda:" followed by the API name (see Operations). For example, "lambda:CreateFunction". You can use wildcard ("lambda:*") to grant permission for all AWS Lambda actions.

apPrincipal :: Lens' AddPermission Text Source

The principal who is getting this permission. It can be Amazon S3 service Principal ("") if you want Amazon S3 to invoke the function, an AWS account ID if you are granting cross-account permission, or any valid AWS service principal such as "". For example, you might want to allow a custom application in another AWS account to push events to AWS Lambda by invoking your function.

Destructuring the Response

addPermissionResponse Source

Creates a value of AddPermissionResponse with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

Response Lenses

aprsStatement :: Lens' AddPermissionResponse (Maybe Text) Source

The permission statement you specified in the request. The response returns the same as a string using "\" as an escape character in the JSON.

aprsStatus :: Lens' AddPermissionResponse Int Source

The response status code.