Help Center/ Object Storage Service/ SDK Reference/ Python/ Bucket-Related APIs (SDK for Python)/ DIS Notification Policies (SDK for Python)/ Obtaining a DIS Notification Policy (SDK for Python)
Updated on 2026-07-31 GMT+08:00
View PDF
Share

Obtaining a DIS Notification Policy (SDK for Python)

Function

This API is used to obtain the DIS notification policy of a bucket. If the policy exists, a success message is returned with status code 200.

DIS notification policies are not available for fusion buckets.

Restrictions

  • To call this API, you must be the bucket owner or have the Tenant Administrator permission. To configure the Tenant Administrator permission, you need to use role/policy-based authorization (IAM v3 APIs in the old IAM version). For details, see Using IAM for Authorization.
  • The mapping between OBS regions and endpoints must comply with what is listed in Regions and Endpoints.

Method

ObsClient.getBucketDisPolicy(bucketName, extensionHeaders)

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 a period (.) and a hyphen (-) adjacent to each other, for example, my-.bucket or my.-bucket.
  • If you repeatedly create buckets with 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

extensionHeaders

dict

No

Explanation:

Extension headers

Value range:

See User-defined Headers (SDK for Python).

Default value:

None

Responses

Type

Description

GetResult

Explanation:

SDK common results
Table 1 GetResult

Parameter

Type

Description

status

int

Explanation:

HTTP status code

Value range:

A status code is a group of digits indicating the status of a response. It ranges from 2xx (indicating successes) to 4xx or 5xx (indicating errors). 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 the sections "Bucket-Related APIs" and "Object-Related APIs".

Default value:

None

GetResult.body Type

Description

Table 2

Explanation:

DIS notification policy. For details, see Table 2.
Table 2 DisPolicy

Parameter

Type

Description

id

str

Explanation:

Rule ID. It is the unique identifier of the DIS policy rule configured for the bucket.

stream

str

Explanation:

DIS stream name

project

str

Explanation:

ID of the project to which the DIS stream belongs

events

list

Explanation:

OBS event list

Value range:

A valid value must contain 0 to 1,023 characters. Any characters are allowed. The following event types are supported:

  • ObjectCreated:* (all upload operations)
  • ObjectCreated:Put (uploading an object)
  • ObjectCreated:Post (uploading an object with a browser)
  • ObjectCreated:Copy (copying an object)
  • ObjectCreated:CompleteMultipartUpload (completing a multipart upload)
  • ObjectRemoved:* (all deletion operations)
  • ObjectRemoved:Delete (deleting an object with a specified version ID)
  • ObjectRemoved:DeleteMarkerCreated (deleting an object without a specified version ID)

prefix

str

Explanation:

Object name prefix. Enter the prefix (which serves as the keyword) to filter object names. The longer the prefix string, the higher the matching accuracy.

suffix

str

Explanation:

Object name suffix. Enter the suffix (which serves as the keyword) to filter object names. The longer the suffix string, the higher the matching accuracy.

agency

str

Explanation:

IAM agency name

Sample Code

This example obtains the DIS notification policy of bucket examplebucket.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
from obs import ObsClient
import os
import traceback

# Obtain an AK/SK pair using environment variables (recommended) or import it 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/intl/en-us/usermanual-ca/ca_01_0003.html.
ak = os.getenv("AccessKeyID")
sk = os.getenv("SecretAccessKey")
# If you use a temporary AK/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. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
server = "https://obs.ap-southeast-1.myhuaweicloud.com" 

# Create an obsClient instance.
# If you use a temporary AK/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:
    bucketName = "examplebucket"
    # Obtain the DIS notification policy of the bucket.
    resp = obsClient.getBucketDisPolicy(bucketName)

    # If status code 2xx is returned, the API call succeeds. Otherwise, the API call fails.
    if resp.status < 300:
        print('Get Bucket DisPolicy Succeeded')
        print('rules:', resp.body.rules)
    else:
        print('Get Bucket DisPolicy Failed')
        print('requestId:', resp.requestId)
        print('errorCode:', resp.errorCode)
        print('errorMessage:', resp.errorMessage)
except Exception:
    print('Get Bucket DisPolicy Failed')
    print(traceback.format_exc())