getBucketPolicy method

Future<GetBucketPolicyResult> getBucketPolicy({ required String accountId, required String bucket, })

Returns the policy of a specified Outposts bucket. For more information, see Using Amazon S3 on Outposts in the Amazon Simple Storage Service Developer Guide.

If you are using an identity other than the root user of the AWS account that owns the bucket, the calling identity must have the GetBucketPolicy permissions on the specified bucket and belong to the bucket owner's account in order to use this operation.

Only users from Outposts bucket owner account with the right permissions can perform actions on an Outposts bucket. If you don't have s3-outposts:GetBucketPolicy permissions or you're not using an identity that belongs to the bucket owner's account, Amazon S3 returns a 403 Access Denied error. For more information about bucket policies, see Using Bucket Policies and User Policies.

All Amazon S3 on Outposts REST API requests for this action require an additional parameter of x-amz-outpost-id to be passed with the request and an S3 on Outposts endpoint hostname prefix instead of s3-control. For an example of the request syntax for Amazon S3 on Outposts that uses the S3 on Outposts endpoint hostname prefix and the x-amz-outpost-id derived using the access point ARN, see the Examples section.

The following actions are related to GetBucketPolicy:

• GetObject
• PutBucketPolicy
• DeleteBucketPolicy

Parameter accountId : The AWS account ID of the Outposts bucket.

Parameter bucket : Specifies the bucket.

For using this parameter with Amazon S3 on Outposts with the REST API, you must specify the name and the x-amz-outpost-id as well.

For using this parameter with S3 on Outposts with the AWS SDK and CLI, you must specify the ARN of the bucket accessed in the format arn:aws:s3-outposts:<Region>:<account-id>:outpost/<outpost-id>/bucket/<my-bucket-name>. For example, to access the bucket reports through outpost my-outpost owned by account 123456789012 in Region us-west-2, use the URL encoding of arn:aws:s3-outposts:us-west-2:123456789012:outpost/my-outpost/bucket/reports. The value must be URL encoded.

Implementation

Future<GetBucketPolicyResult> getBucketPolicy({
  required String accountId,
  required String bucket,
}) async {
  ArgumentError.checkNotNull(accountId, 'accountId');
  _s.validateStringLength(
    'accountId',
    accountId,
    0,
    64,
    isRequired: true,
  );
  ArgumentError.checkNotNull(bucket, 'bucket');
  _s.validateStringLength(
    'bucket',
    bucket,
    3,
    255,
    isRequired: true,
  );
  final headers = <String, String>{
    'x-amz-account-id': accountId.toString(),
  };
  final $result = await _protocol.send(
    method: 'GET',
    requestUri: '/v20180820/bucket/${Uri.encodeComponent(bucket)}/policy',
    headers: headers,
    exceptionFnMap: _exceptionFns,
  );
  return GetBucketPolicyResult.fromXml($result.body);
}