Batch Deleting Objects (SDK for Python)

Function

This API deletes objects in batches from a specific bucket. Deleted objects cannot be recovered.

OBS does not involve folders like in a file system. All elements stored in OBS buckets are objects. A folder you see on the console or other tools in OBS is essentially an object whose size is 0 and whose name ends with a slash (/). To delete a folder, you need to list all objects whose names are prefixed with the folder name and then call the batch deletion API.

In a batch delete operation, OBS concurrently deletes the specified objects and returns the deletion result of each object.

Restrictions

To delete objects in a batch, you must be the bucket owner or have the required permission (obs:object:DeleteObject in IAM or DeleteObject in a bucket policy). For details, see Introduction to OBS Access Control, IAM Custom Policies, and Configuring an Object Policy.
If versioning is not enabled for a bucket, deleted objects cannot be recovered.
A maximum of 1,000 objects can be deleted at a time. If you send a request for deleting more than 1,000 objects, OBS returns an error message.
After concurrent tasks are assigned, if an internal error occurs during cyclic deletion of multiple objects, an object may be deleted in the index data but still exist in the metadata.

Method

ObsClient.deleteObjects(bucketName, deleteObjectsRequest)

Request Parameters

**Table 1** List of request parameters
Parameter	Type	Mandatory (Yes/No)	Description
bucketName	str	Yes	Explanation: Bucket name Restrictions: A bucket name must be unique across all accounts and regions. A bucket name: Must be 3 to 63 characters long and start with a digit or letter. Lowercase letters, digits, hyphens (-), and periods (.) are allowed. Cannot be formatted as an IP address. Cannot start or end with a hyphen (-) or period (.). Cannot contain two consecutive periods (..), for example, my..bucket. Cannot contain periods (.) and hyphens (-) adjacent to each other, for example, my-.bucket or my.-bucket. If you repeatedly create buckets of the same name in the same region, no error will be reported and the bucket properties comply with those set in the first creation request. Default value: None
deleteObjectsRequest	DeleteObjectsRequest	Yes	Explanation: Request parameters of deleting objects in a batch For details, see Table 2. Default value: None

**Table 2** DeleteObjectsRequest
Parameter	Type	Mandatory (Yes/No)	Description
quiet	bool	No	Explanation: Response mode to the request for deleting objects in a batch Value range: False: The detailed mode. Results of both successful and failed deletions are returned. True: The quiet mode. Only results of failed deletions are returned. Default value: False
objects	list of Object	Yes	Explanation: List of objects to be deleted. For details, see Table 3. Default value: None
encoding_type	str	No	Explanation: Encoding type for Key in the response. If Key in the response contains control characters that are not supported by the XML 1.0 standard, you can specify this parameter to encode Key. Value range: url Default value: None. If you leave this parameter blank, encoding is not applied to Key.

**Table 3** Object
Parameter	Type	Mandatory (Yes/No)	Description
key	str	Yes	Explanation: Object name. An object is uniquely identified by an object name in a bucket. An object name is a complete path that does not contain the bucket name. For example, if the address for accessing the object is examplebucket.obs.eu-west-101.myhuaweicloud.eu/folder/test.txt, the object name is folder/test.txt. Value range: The value must contain 1 to 1,024 characters. Default value: None
versionId	str	No	Explanation: Object version ID, for example, G001117FCE89978B0000401205D5DC9 Value range: The value must contain 32 characters. Default value: None. If this parameter is left blank, the latest version of the object is deleted.
encoding_type	str	No	Explanation: Encoding type for some elements in the response. If delimiter, key_marker, prefix, nextKeyMarker, and key contain control characters that are not supported by the XML 1.0 standard, you can set encoding_type to encode delimiter, key_marker, prefix (including the Prefix in commonPrefixes), nextKeyMarker, and key in the response. Value range: Type: string. Value option: url

Responses

**Table 4** List of returned results
Type	Description
GetResult	Explanation: SDK common results

**Table 5** GetResult
Parameter	Type	Description
status	int	Explanation: HTTP status code Value range: A status code is a group of digits ranging from 2xx (indicating successes) to 4xx or 5xx (indicating errors). It indicates the status of a response. For more information, see Status Code. Default value: None
reason	str	Explanation: Reason description. Default value: None
errorCode	str	Explanation: Error code returned by the OBS server. If the value of status is less than 300, this parameter is left blank. Default value: None
errorMessage	str	Explanation: Error message returned by the OBS server. If the value of status is less than 300, this parameter is left blank. Default value: None
requestId	str	Explanation: Request ID returned by the OBS server Default value: None
indicator	str	Explanation: Error indicator returned by the OBS server. Default value: None
hostId	str	Explanation: Requested server ID. If the value of status is less than 300, this parameter is left blank. Default value: None
resource	str	Explanation: Error source (a bucket or an object). If the value of status is less than 300, this parameter is left blank. Default value: None
header	list	Explanation: Response header list, composed of tuples. Each tuple consists of two elements, respectively corresponding to the key and value of a response header. Default value: None
body	object	Explanation: Result content returned after the operation is successful. If the value of status is larger than 300, this parameter is left blank. The value varies with the API being called. For details, see Bucket-Related APIs (SDK for Python) and Object-Related APIs (SDK for Python). Default value: None

**Table 6** GetResult.body
GetResult.body Type	Description
DeleteObjectResponse	Explanation: Response results of the request for deleting objects in a batch For details, see Table 7.

**Table 7** DeleteObjectResponse
Parameter	Type	Description
deleteMarker	bool	Explanation: Whether the deleted object is a delete marker Value range: true: The deleted object is a delete marker. false: The deleted object is not a delete marker. Default value: false
versionId	str	Explanation: Object version ID, for example, G001117FCE89978B0000401205D5DC9 Value range: The value must contain 32 characters. Default value: None. If this parameter is left blank, the latest version of the object is deleted.

Code Examples

This example deletes objects objectkey1 and objectkey2 from bucket examplebucket in a batch.

    
     
       
       
         from obs import ObsClient
import os
from obs import DeleteObjectsRequest
from obs import Object
import traceback

# Obtain an AK and SK pair using environment variables or import the AK and SK pair in other ways. Using hard coding may result in leakage.
# Obtain an AK and SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
ak = os.getenv("AccessKeyID")
sk = os.getenv("SecretAccessKey")
# (Optional) If you use a temporary AK and SK pair and a security token to access OBS, obtain them from environment variables.
security_token = os.getenv("SecurityToken")
# Set server to the endpoint corresponding to the bucket. Here uses EU-Dublin as an example. Replace it with the one in use.
server = "https://obs.eu-west-101.myhuaweicloud.eu" 

# Create an obsClient instance.
# If you use a temporary AK and SK pair and a security token to access OBS, you must specify security_token when creating an instance.
obsClient = ObsClient(access_key_id=ak, secret_access_key=sk, server=server)
try:
    # Create objects.
    object1 = Object(key='objectkey1', versionId=None)
    object2 = Object(key='objectkey2', versionId=None)

# Specify encoding_type when the object name contains special characters.
    encoding_type = 'url'
    bucketName = "examplebucket"
    # Batch delete the objects.
    resp = obsClient.deleteObjects(bucketName, DeleteObjectsRequest(quiet=False, objects=[object1, object2],
                                                                    encoding_type=encoding_type))

    # If status code 2xx is returned, the API is called successfully. Otherwise, the API call fails.
    if resp.status < 300:
        print('Delete Objects Succeeded')
        print('requestId:', resp.requestId)
        if resp.body.deleted:
            index = 1
            for delete in resp.body.deleted:
                print('delete[' + str(index) + ']')
                print('key:', delete.key, ',deleteMarker:', delete.deleteMarker, ',deleteMarkerVersionId:',
                      delete.deleteMarkerVersionId)
                print('versionId:', delete.versionId)
                index += 1
        if resp.body.error:
            index = 1
            for err in resp.body.error:
                print('err[' + str(index) + ']')
                print('key:', err.key, ',code:', err.code, ',message:', err.message)
                print('versionId:', err.versionId)
                index += 1
    else:
        print('Delete Objects Failed')
        print('requestId:', resp.requestId)
        print('errorCode:', resp.errorCode)
        print('errorMessage:', resp.errorMessage)
except:
    print('Delete Objects Failed')  
    print(traceback.format_exc())

        

      

    
   