Updated on 2026-02-27 GMT+08:00

Query the CDN Information of a Bucket

Function

This API is used to query the CDN information of a bucket.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    oms::checkCdnInfo

    Read

    -

    -

    -

    -

URI

POST /v2/{project_id}/objectstorage/buckets/cdn-info

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

The project ID.

Minimum: 1

Maximum: 1024

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

The token used for IAM authentication. Ensure that the project ID in the token matches the project ID in the request URI.

Minimum: 1

Maximum: 16384

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

ak

Yes

String

The AK for accessing the source bucket. Enter a maximum of 100 characters. This parameter is mandatory when task_type is not url_list.

Minimum: 0

Maximum: 100

sk

Yes

String

The SK for accessing the destination bucket. Enter a maximum of 100 characters. This parameter is mandatory when task_type is not url_list.

Minimum: 0

Maximum: 100

connection_string

No

String

The connection string, which is used for Microsoft Azure Blob authentication.

Minimum: 0

Maximum: 2048

cloud_type

Yes

String

The cloud service provider.

AWS: Amazon Web Services

Aliyun: Alibaba Cloud

Qiniu: Qiniu Cloud

QingCloud

Tencent: Tencent Cloud

Baidu: Baidu Cloud

KingsoftCloud

Azure: Microsoft Azure

UCloud

HuaweiCloud: Huawei Cloud

URLSource: URL data sources

HEC

Minimum: 0

Maximum: 100

region

Yes

String

Region.

Minimum: 0

Maximum: 100

app_id

No

String

Tencent Cloud app ID. This parameter is mandatory when cloud_type is Tencent. You can obtain the value from the account information page on the Tencent Cloud console.

Minimum: 0

Maximum: 255

bucket

Yes

String

The bucket name.

Minimum: 0

Maximum: 100

prefix

No

PrefixKeyInfo object

Prefix.

source_cdn

Yes

SourceCdnReq object

Whether migration from CDN is enabled. If this field is included, migration from CDN is supported. Otherwise, it is not supported. If migration from CDN is enabled, the source objects to be migrated are obtained from the specified CDN domain name during migration.

Table 4 PrefixKeyInfo

Parameter

Mandatory

Type

Description

keys

Yes

Array of strings

Key.

Minimum: 0

Maximum: 2048

Array Length: 0 - 100

Table 5 SourceCdnReq

Parameter

Mandatory

Type

Description

authentication_key

No

String

The CDN authentication key. If the CDN authentication is required, this parameter is mandatory.

If no authorization is required, do not set this parameter.

Qiniu: You do not need to set this parameter.

Aliyun: Set this parameter based on authentication_type.

KingsoftCloud: You do not need to set this parameter.

Minimum: 0

Maximum: 255

authentication_type

Yes

String

The authentication type. The value can be:

NONE: public access without authentication type

QINIU_PRIVATE_AUTHENTICATION: Qiniu private URL signature

ALIYUN_OSS_A: Alibaba Cloud URL signature, simple and universal

ALIYUN_OSS_B: Alibaba Cloud header signature, used for API calling

ALIYUN_OSS_C: Alibaba Cloud STS temporary security token, the most secure

KSYUN_PRIVATE_AUTHENTICATION: Kingsoft Cloud private URL signature

AZURE_SAS_TOKEN: Microsoft Azure shared access signature, flexible and secure

TENCENT_COS_A: Tencent Cloud multi-signature scenarios (not recommended)

TENCENT_COS_B: Tencent Cloud single-signature scenarios, the most secure

TENCENT_COS_C: Tencent Cloud header signature, used for API calling

TENCENT_COS_D: Tencent Cloud header signature, used for API calling

Default: NONE

Enumeration values:

  • NONE

  • QINIU_PRIVATE_AUTHENTICATION

  • ALIYUN_OSS_A

  • ALIYUN_OSS_B

  • ALIYUN_OSS_C

  • KSYUN_PRIVATE_AUTHENTICATION

  • AZURE_SAS_TOKEN

  • TENCENT_COS_A

  • TENCENT_COS_B

  • TENCENT_COS_C

  • TENCENT_COS_D

domain

Yes

String

The domain name used to obtain objects to be migrated.

Minimum: 0

Maximum: 1024

protocol

Yes

String

The protocol type. HTTP and HTTPS are supported.

Enumeration values:

  • http

  • https

Response Parameters

Status code: 200

Table 6 Response body parameters

Parameter

Type

Description

is_same_cloud_type

Boolean

Whether the CDN is provided by the source cloud vendor.

is_download_available

Boolean

Whether source data can be downloaded from the CDN.

checked_keys

Array of CheckedKey objects

The array of checked objects returned.

Array Length: 0 - 1000

Table 7 CheckedKey

Parameter

Type

Description

key

String

Key.

Minimum: 0

Maximum: 2048

is_etag_matching

Boolean

Whether the etag is matched.

is_object_existing

Boolean

Whether the object is found.

Status code: 400

Table 8 Response body parameters

Parameter

Type

Description

error_msg

String

Error message.

error_code

String

Error code.

Example Requests

This example queries the CDN information of the xxx bucket using the xcsad key in ALIYUN_OSS_B authentication type.

POST https://{endpoint}/v2/{project_id}/objectstorage/buckets/cdn-info

{
  "ak" : "xxx",
  "sk" : "xxx",
  "cloud_type" : "Aliyun",
  "region" : "cn-hangzhou",
  "bucket" : "xxx",
  "source_cdn" : {
    "protocol" : "https",
    "domain" : "xxx",
    "authentication_type" : "ALIYUN_OSS_B",
    "authentication_key" : "xcsad"
  }
}

Example Responses

Status code: 200

The response body for querying CDN information.

{
  "is_same_cloud_type" : false,
  "is_download_available" : false,
  "checked_keys" : [ {
    "key" : "xxx",
    "is_etag_matching" : false,
    "is_object_existing" : false
  }, {
    "key" : "yyy",
    "is_etag_matching" : false,
    "is_object_existing" : false
  }, {
    "key" : "ccc",
    "is_etag_matching" : false,
    "is_object_existing" : false
  }, {
    "key" : "bbb",
    "is_etag_matching" : false,
    "is_object_existing" : false
  }, {
    "key" : "nnnn",
    "is_etag_matching" : false,
    "is_object_existing" : false
  } ]
}

SDK Sample Code

The SDK sample code is as follows.

This example queries the CDN information of the xxx bucket using the xcsad key in ALIYUN_OSS_B authentication type.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.oms.v2.region.OmsRegion;
import com.huaweicloud.sdk.oms.v2.*;
import com.huaweicloud.sdk.oms.v2.model.*;


public class ShowCdnInfoSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        OmsClient client = OmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(OmsRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowCdnInfoRequest request = new ShowCdnInfoRequest();
        ShowCdnInfoReq body = new ShowCdnInfoReq();
        SourceCdnReq sourceCdnbody = new SourceCdnReq();
        sourceCdnbody.withAuthenticationKey("xcsad")
            .withAuthenticationType(SourceCdnReq.AuthenticationTypeEnum.fromValue("ALIYUN_OSS_B"))
            .withDomain("xxx")
            .withProtocol(SourceCdnReq.ProtocolEnum.fromValue("https"));
        body.withSourceCdn(sourceCdnbody);
        body.withBucket("xxx");
        body.withRegion("cn-hangzhou");
        body.withCloudType("Aliyun");
        body.withSk("xxx");
        body.withAk("xxx");
        request.withBody(body);
        try {
            ShowCdnInfoResponse response = client.showCdnInfo(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

This example queries the CDN information of the xxx bucket using the xcsad key in ALIYUN_OSS_B authentication type.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkoms.v2.region.oms_region import OmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkoms.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = OmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(OmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ShowCdnInfoRequest()
        sourceCdnbody = SourceCdnReq(
            authentication_key="xcsad",
            authentication_type="ALIYUN_OSS_B",
            domain="xxx",
            protocol="https"
        )
        request.body = ShowCdnInfoReq(
            source_cdn=sourceCdnbody,
            bucket="xxx",
            region="cn-hangzhou",
            cloud_type="Aliyun",
            sk="xxx",
            ak="xxx"
        )
        response = client.show_cdn_info(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

This example queries the CDN information of the xxx bucket using the xcsad key in ALIYUN_OSS_B authentication type.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    oms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := oms.NewOmsClient(
        oms.OmsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowCdnInfoRequest{}
	authenticationKeySourceCdn:= "xcsad"
	sourceCdnbody := &model.SourceCdnReq{
		AuthenticationKey: &authenticationKeySourceCdn,
		AuthenticationType: model.GetSourceCdnReqAuthenticationTypeEnum().ALIYUN_OSS_B,
		Domain: "xxx",
		Protocol: model.GetSourceCdnReqProtocolEnum().HTTPS,
	}
	request.Body = &model.ShowCdnInfoReq{
		SourceCdn: sourceCdnbody,
		Bucket: "xxx",
		Region: "cn-hangzhou",
		CloudType: "Aliyun",
		Sk: "xxx",
		Ak: "xxx",
	}
	response, err := client.ShowCdnInfo(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

The response body for querying CDN information.

400

Standard error response.

Error Codes

See Error Codes.