List Objects

s3_list_objects

R Documentation

This operation is not supported for directory buckets

Description

This operation is not supported for directory buckets.

Returns some or all (up to 1,000) of the objects in a bucket. You can use the request parameters as selection criteria to return a subset of the objects in a bucket. A 200 OK response can contain valid or invalid XML. Be sure to design your application to parse the contents of the response and handle it appropriately.

This action has been revised. We recommend that you use the newer version, list_objects_v2, when developing applications. For backward compatibility, Amazon S3 continues to support list_objects.

The following operations are related to list_objects:

• list_objects_v2

• get_object

• put_object

• create_bucket

• list_buckets

You must URL encode any signed header values that contain spaces. For example, if your header value is ⁠my file.txt⁠, containing two spaces after my, you must URL encode this value to ⁠my%20%20file.txt⁠.

Usage

s3_list_objects(Bucket, Delimiter, EncodingType, Marker, MaxKeys,
  Prefix, RequestPayer, ExpectedBucketOwner, OptionalObjectAttributes)

Arguments

Bucket	[required] The name of the bucket containing the objects. Directory buckets - When you use this operation with a directory bucket, you must use virtual-hosted-style requests in the format Bucket-name.s3express-zone-id.region-code.amazonaws.com. Path-style requests are not supported. Directory bucket names must be unique in the chosen Zone (Availability Zone or Local Zone). Bucket names must follow the format bucket-base-name--zone-id--x-s3 (for example, amzn-s3-demo-bucket--usw2-az1--x-s3). For information about bucket naming restrictions, see Directory bucket naming rules in the Amazon S3 User Guide. Access points - When you use this action with an access point for general purpose buckets, you must provide the alias of the access point in place of the bucket name or specify the access point ARN. When you use this action with an access point for directory buckets, you must provide the access point name in place of the bucket name. When using the access point ARN, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using access points in the Amazon S3 User Guide. Object Lambda access points are not supported by directory buckets. S3 on Outposts - When you use this action with S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com. When you use this action with S3 on Outposts, the destination bucket must be the Outposts access point ARN or the access point alias. For more information about S3 on Outposts, see What is S3 on Outposts? in the Amazon S3 User Guide.
Delimiter	A delimiter is a character that you use to group keys. CommonPrefixes is filtered out from results if it is not lexicographically greater than the key-marker.
EncodingType	Encoding type used by Amazon S3 to encode the object keys in the response. Responses are encoded only in UTF-8. An object key can contain any Unicode character. However, the XML 1.0 parser can't parse certain characters, such as characters with an ASCII value from 0 to 10. For characters that aren't supported in XML 1.0, you can add this parameter to request that Amazon S3 encode the keys in the response. For more information about characters to avoid in object key names, see Object key naming guidelines. When using the URL encoding type, non-ASCII characters that are used in an object's key name will be percent-encoded according to UTF-8 code values. For example, the object ⁠test_file(3).png⁠ will appear as ⁠test_file%283%29.png⁠.
Marker	Marker is where you want Amazon S3 to start listing from. Amazon S3 starts listing after this specified key. Marker can be any key in the bucket.
MaxKeys	Sets the maximum number of keys returned in the response. By default, the action returns up to 1,000 key names. The response might contain fewer keys but will never contain more.
Prefix	Limits the response to keys that begin with the specified prefix.
RequestPayer	Confirms that the requester knows that she or he will be charged for the list objects request. Bucket owners need not specify this parameter in their requests.
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).
OptionalObjectAttributes	Specifies the optional fields that you want returned in the response. Fields that you do not specify are not returned.

Value

A list with the following syntax:

list(
  IsTruncated = TRUE|FALSE,
  Marker = "string",
  NextMarker = "string",
  Contents = list(
    list(
      Key = "string",
      LastModified = as.POSIXct(
        "2015-01-01"
      ),
      ETag = "string",
      ChecksumAlgorithm = list(
        "CRC32"|"CRC32C"|"SHA1"|"SHA256"|"CRC64NVME"|"SHA512"|"MD5"|"XXHASH64"|"XXHASH3"|"XXHASH128"
      ),
      ChecksumType = "COMPOSITE"|"FULL_OBJECT",
      Size = 123,
      StorageClass = "STANDARD"|"REDUCED_REDUNDANCY"|"GLACIER"|"STANDARD_IA"|"ONEZONE_IA"|"INTELLIGENT_TIERING"|"DEEP_ARCHIVE"|"OUTPOSTS"|"GLACIER_IR"|"SNOW"|"EXPRESS_ONEZONE"|"FSX_OPENZFS"|"FSX_ONTAP",
      Owner = list(
        DisplayName = "string",
        ID = "string"
      ),
      RestoreStatus = list(
        IsRestoreInProgress = TRUE|FALSE,
        RestoreExpiryDate = as.POSIXct(
          "2015-01-01"
        )
      )
    )
  ),
  Name = "string",
  Prefix = "string",
  Delimiter = "string",
  MaxKeys = 123,
  CommonPrefixes = list(
    list(
      Prefix = "string"
    )
  ),
  EncodingType = "url",
  RequestCharged = "requester"
)

Request syntax

svc$list_objects(
  Bucket = "string",
  Delimiter = "string",
  EncodingType = "url",
  Marker = "string",
  MaxKeys = 123,
  Prefix = "string",
  RequestPayer = "requester",
  ExpectedBucketOwner = "string",
  OptionalObjectAttributes = list(
    "RestoreStatus"
  )
)

Examples

## Not run: 
# The following example list two objects in a bucket.
svc$list_objects(
  Bucket = "examplebucket",
  MaxKeys = "2"
)

## End(Not run)