listBucketMetricsConfigurations method

Future<ListBucketMetricsConfigurationsOutput> listBucketMetricsConfigurations({ required String bucket, String? continuationToken, String? expectedBucketOwner, })

Lists the metrics configurations for the bucket. The metrics configurations are only for the request metrics of the bucket and do not provide information on daily storage metrics. You can have up to 1,000 configurations per bucket. This action supports list pagination and does not return more than 100 configurations at a time. Always check the IsTruncated element in the response. If there are no more configurations to list, IsTruncated is set to false. If there are more configurations to list, IsTruncated is set to true, and there is a value in NextContinuationToken. You use the NextContinuationToken value to continue the pagination of the list by passing the value in continuation-token in the request to GET the next page.

Permissions

To use this operation, you must have permissions to perform the s3:GetMetricsConfiguration action. The bucket owner has this permission by default. The bucket owner can grant this permission to others. For more information about permissions, see Permissions Related to Bucket Subresource Operations and Managing Access Permissions to Your Amazon S3 Resources.

• General purpose bucket permissions - The s3:GetMetricsConfiguration permission is required in a policy. For more information about general purpose buckets permissions, see Using Bucket Policies and User Policies in the Amazon S3 User Guide.
• Directory bucket permissions - To grant access to this API operation, you must have the s3express:GetMetricsConfiguration permission in an IAM identity-based policy instead of a bucket policy. Cross-account access to this API operation isn't supported. This operation can only be performed by the Amazon Web Services account that owns the resource. For more information about directory bucket policies and permissions, see Amazon Web Services Identity and Access Management (IAM) for S3 Express One Zone in the Amazon S3 User Guide.

HTTP Host header syntax

Directory buckets - The HTTP Host header syntax is s3express-control.region-code.amazonaws.com.

For more information about metrics configurations and CloudWatch request metrics, see Monitoring Metrics with Amazon CloudWatch.

The following operations are related to ListBucketMetricsConfigurations:

• PutBucketMetricsConfiguration
• GetBucketMetricsConfiguration
• DeleteBucketMetricsConfiguration

Parameter bucket : The name of the bucket containing the metrics configurations to retrieve.

Directory buckets - When you use this operation with a directory bucket, you must use path-style requests in the format https://s3express-control.region-code.amazonaws.com/bucket-name . Virtual-hosted-style requests aren't supported. Directory bucket names must be unique in the chosen Zone (Availability Zone or Local Zone). Bucket names must also follow the format bucket-base-name--zone-id--x-s3 (for example, DOC-EXAMPLE-BUCKET--usw2-az1--x-s3). For information about bucket naming restrictions, see Directory bucket naming rules in the Amazon S3 User Guide

Parameter continuationToken : The marker that is used to continue a metrics configuration listing that has been truncated. Use the NextContinuationToken from a previously truncated list response to continue the listing. The continuation token is an opaque value that Amazon S3 understands.

Parameter expectedBucketOwner : The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code 403 Forbidden (access denied).

Implementation

Future<ListBucketMetricsConfigurationsOutput>
    listBucketMetricsConfigurations({
  required String bucket,
  String? continuationToken,
  String? expectedBucketOwner,
}) async {
  final headers = <String, String>{
    if (expectedBucketOwner != null)
      'x-amz-expected-bucket-owner': expectedBucketOwner.toString(),
  };
  final $query = <String, List<String>>{
    if (continuationToken != null) 'continuation-token': [continuationToken],
  };
  final $result = await _protocol.send(
    method: 'GET',
    requestUri:
        '/${Uri.encodeComponent(bucket)}?metrics&x-id=ListBucketMetricsConfigurations',
    queryParams: $query,
    headers: headers,
    exceptionFnMap: _exceptionFns,
  );
  return ListBucketMetricsConfigurationsOutput.fromXml($result.body);
}