ListBucket

Amazon Simple Storage Service: 2006-03-01

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ListBucket

The ListBucket operation returns information about some of the items in the bucket.

For a general introduction to the list operation, see the Listing Keys.

Requests

This example lists up to 1000 keys in the "quotes" bucket that have the prefix "notes."

Syntax

<ListBucket xmlns="http://doc.s3.amazonaws.com/2006-03-01">
  <Bucket>quotes</Bucket>
  <Prefix>notes/</Prefix>
  <Delimiter>/</Delimiter>
  <MaxKeys>1000</MaxKeys>
  <AWSAccessKeyId>1D9FVRAYCP1VJEXAMPLE=</AWSAccessKeyId>
  <Timestamp>2006-03-01T12:00:00.183Z</Timestamp>
  <Signature>Iuyz3d3P0aTou39dzbqaEXAMPLE=</Signature>
</ListBucket>

Parameters

Name	Description	Required
`prefix`	Limits the response to keys which begin with the indicated prefix. You can use prefixes to separate a bucket into different sets of keys in a way similar to how a file system uses folders. Type: String Default: None	No
`marker`	Indicates where in the bucket to begin listing. The list will only include keys that occur lexicographically after marker. This is convenient for pagination: To get the next page of results use the last key of the current page as the marker. Type: String Default: None	No
`max-keys`	The maximum number of keys you'd like to see in the response body. The server might return fewer than this many keys, but will not return more. Type: String Default: None	No
`delimiter`	Causes keys that contain the same string between the prefix and the first occurrence of the delimiter to be rolled up into a single result element in the CommonPrefixes collection. These rolled-up keys are not returned elsewhere in the response. Type: String Default: None	No

Success Response

This response assumes the bucket contains the following keys:

notes/todos.txt
notes/2005-05-23/customer_mtg_notes.txt
notes/2005-05-23/phone_notes.txt
notes/2005-05-28/sales_notes.txt

Syntax

<?xml version="1.0" encoding="UTF-8"?>
<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>backups</Name>
  <Prefix>notes/</Prefix>
  <MaxKeys>1000</MaxKeys>
  <Delimiter>/</Delimiter>
  <IsTruncated>false</IsTruncated>
  <Contents>
    <Key>notes/todos.txt</Key>
    <LastModified>2006-01-01T12:00:00.000Z</LastModified>
    <ETag>&quot;828ef3fdfa96f00ad9f27c383fc9ac7f&quot;</ETag>
    <Size>5126</Size>
    <StorageClass>STANDARD</StorageClass>
    <Owner>
      <ID>bcaf1ffd86f41ce161ca5fb16fd081034f</ID>
      <DisplayName>webfile</DisplayName>
    </Owner>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
  <CommonPrefixes>
    <Prefix>notes/2005-05-23/</Prefix>
  </CommonPrefixes>
  <CommonPrefixes>
    <Prefix>notes/2005-05-28/</Prefix>
  </CommonPrefixes>
  </ListBucketResult>

As you can see, many of the fields in the response echo the request parameters. IsTruncated, Contents, and CommonPrefixes are the only response elements that can contain new information.

Response Elements

Name	Description
`Contents`	Metadata about each object returned. Type: XML metadata Ancestor: ListBucketResult
`CommonPrefixes`	A response can contain `CommonPrefixes` only if you specify a `delimiter`. When you do, `CommonPrefixes` contains all (if there are any) keys between `Prefix` and the next occurrence of the string specified by `delimiter`. In effect, `CommonPrefixes` lists keys that act like subdirectories in the directory specified by `Prefix`. For example, if `prefix` is `notes/` and `delimiter` is a slash (/), in `notes/summer/july`, the common prefix is `notes/summer/`. Type: String Ancestor: ListBucketResult
`Delimiter`	Causes keys that contain the same string between the prefix and the first occurrence of the delimiter to be rolled up into a single result element in the CommonPrefixes collection. These rolled-up keys are not returned elsewhere in the response. Type: String Ancestor: ListBucketResult
`IsTruncated`	Specifies whether (true) or not (false) all of the results were returned. All of the results may not be returned if the number of results exceeds that specified by `MaxKeys`. Type: String Ancestor: boolean
`Marker`	Indicates where in the bucket to begin listing. Type: String Ancestor: ListBucketResult
`MaxKeys`	The maximum number of keys returned in the response body. Type: String Ancestor: ListBucketResult
`Name`	Name of the bucket. Type: String Ancestor: ListBucketResult
`Prefix`	Keys that begin with the indicated prefix. Type: String Ancestor: ListBucketResult

Response Body

For information about the list response, see Listing Keys Response.

Access Control

To list the keys of a bucket you need to have been granted READ access on the bucket.

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