Cloud Enterprise Object Storage REST API

Search (SHIFT+S)




List Bucket Objects

GET /

Returns a list of (up to 1000) objects in a bucket. Query parameters can be used to return a portion of the objects in a bucket. The result is sorted alphabetically.

URL Format

Host Style: http://bucketname.ns1.emc.com/
Path Style: http://ns1.emc.com/bucketname


Query Parameters

list-typeQuery list-type 0 1 String Indicate the request is V2 API request by setting its value to 2. Otherwise, the request will be treated as v1 request.
continuation-tokenQuery continuation-token 0 1 String V2 Indicate an opaque value that ECS S3 understands and can start listing from with this value.
delimiterQuery delimiter 0 1 String A character used to group keys (object names). CommonPrefixes result element is returned which has the keys containing the same string between the prefix and the first occurrence of the delimiter. If prefix is not specified, the substring will start at the beginning of the key.
encoding-typeQuery encoding-type 0 1 String V2 Requests to encode the response and specifies the encoding method to use.
fetch-ownerQuery fetch-owner 0 1 String V2 listing API does not return the Owner information in the response. If you want the owner information in the response, you can specify this parameter with the value set to true.
markerQuery marker 0 1 String Indicates the key to begin listing from.
max-keysQuery max-keys 0 1 String The maximum number of keys that are returned in the response.If the number of keys satisfying the search criteria are more than max-keys, the response contains true. The default value is 1000.
prefixQuery prefix 0 1 String Only keys beginning with the specified prefix are returned in the response.
start-afterQuery start-after 0 1 String V2 Return key names after this specific object key in your key space, you can add this parameter. This parameter is valid only in your first request. In case the response is truncated, you can specify this parameter along with the continuation-token parameter, and then ECS S3 will ignore this parameter.

Request Headers

x-amz-date optionalThe timestamp of the request added by the requester. Example: Tue, 03 Sept 2013 12:00:00 GMT. If the Authorization header is specified, you must specify either the x-amz-date or the Date header. If both the headers are specified, the value of x-amz-date header is chosen.
Authorization requiredInformation needed to authenticate requests.

Prerequisites

The following conditions must be met in order to call this operation.

  • The user must have READ access to the bucket

  • BaseUrl used in a host-style URL should be pre-configured using the ECS Management API or the ECS Portal (for example, emc.com in URL: bucketname.ns1.emc.com)

  • Namespace corresponding to this bucket should exist (for example, ns1).


Response Body

Field Description Type Notes
ListBucketResult
Name Name of the bucket String
Prefix Keys beginning with the indicated prefix. String
Marker Indicates where to begin listing keys from in the bucket. String
NextMarker The marker to use in order to request the next page of results - only populated if the isTruncated member indicates that this object listing is truncated String
MaxKeys The maximum number of keys that will be returned in the response. Integer
Delimiter This causes the keys containing the same string between the prefix and the first occurrence of the delimiter to be collectively placed into a single result element in CommonPrefixes. Each collection of result counts as only one return against the MaxKeys value String
IsTruncated Indicates whether all of the objects in the bucket, matching the search criteria, were returned or not. Boolean Valid Values:
  •  Boolean value : true or false
ServerSideEncryptionEnabled D@RE Indicates whether the bucket is set for server side encryption. Boolean Valid Values:
  •  Boolean value : true or false
EncodingType If ?encoding-type:url was used in a bucket listing, that option must be reflected in the response body String
Contents     0-* Elements
Key The key of the object String
LastModified The date on which the object was last modified. Date
ETag The entity tag is an MD5 hash of the object. The ETag only indicates the changes to an object String
Size The size of the object in bytes Long
StorageClass Storage class String Valid Values:
  •  STANDARD
Owner    
ID The ID of the owner String
DisplayName Screen name of the owner. String
IsFanoutObject The flag indicating if the object is a Fanout Object Boolean
CommonPrefixes     0-* Elements
Prefix If the request does not include the prefix parameter then this shows only the substring of the key before the first occurrence of the delimiter If the request includes the prefix parameter then this shows the substring of the key from the beginning of the prefix to the first occurrence of the delimiter String