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Bucket Policy

Last updated: 2024-02-04 11:37:32

Overview
This document provides an overview of APIs and SDK code samples related to bucket policies.
API
Operation
Description
PUT Bucket policy
Setting a bucket policy
Sets a permission policy for a specified bucket
GET Bucket policy
Querying a bucket policy
Queries the permission policy of a specified bucket
DELETE Bucket policy
Deleting a bucket policy
Deletes the permission policy of a specified bucket
Setting a bucket policy
Feature description
This API is used to set permission policies for a specified bucket.
Sample request
cos.putBucketPolicy({
    Bucket: 'examplebucket-1250000000', /*Required*/
    Region: 'COS_REGION',     /* Bucket region. Required */
    Policy: {
        "version": "2.0",
        "Statement": [{
            "Effect": "allow",
            "Principal": {
                "qcs": ["qcs::cam::uin/100000000001:uin/100000000001"]
            },
            "Action": [
                "name/cos:PutObject",
                "name/cos:InitiateMultipartUpload",
                "name/cos:ListMultipartUploads",
                "name/cos:ListParts",
                "name/cos:UploadPart",
                "name/cos:CompleteMultipartUpload"
            ],
            "Resource": ["qcs::cos:ap-guangzhou:uid/1250000000:examplebucket-1250000000/*"],
        }]
    },
}, function(err, data) {
    console.log(err || data);
});
Parameter description
Parameter Name                   
Description
Type
Required
Bucket
Bucket for which the bucket policy is configured in the format: BucketName-APPID
String
Yes
Region
Bucket region. For the enumerated values, see Regions and Access Domain Names
String
Yes
Policy
Permission policy. For more information, see Cloud Access Management Practices > Policy Syntax
Object
Yes
- version
Version number, fixed as 2.0
String
Yes
- statement
List of permission policy statements
ObjectArray
Yes
- - effect
Effect; enumerated values: allow, deny
String
Yes
- - principal
Identity information
ObjectArray
Yes
- - - qcs
ID string
Format: qcs::cam::uin/100000000001:uin/100000000011
Here, 100000000001 is a root account, while 100000000011 is a sub-account
String
Yes
- - action
List of related actions subject to the policy. Wildcard * is supported
StringArray
Yes
- - resource
List of resource identification strings. 
Format: qcs::cos:<Region>:uid/<AppId>:<ShortBucketName>/*
Example: qcs::cos:ap-beijing:uid/1250000000:examplebucket/*
StringArray
Yes
- - condition
Constraints; can be left blank. For details, see Element Reference.
String
No
Callback function description
function(err, data) { ... }
Parameter           
Description
Type
err
Object returned when an error (network error or service error) occurs. If the request is successful, this is null. For more information, see Error Codes.
Object
- statusCode
HTTP status code returned by the request, such as 200, 403, and 404
Number
- headers
Header information returned by the request
Object
data
Data returned when the request is successful. If the request fails, this is null.
Object
- statusCode
HTTP status code returned by the request, such as 200, 403, and 404
Number
- headers
Header information returned by the request
Object
Querying a bucket policy
Feature description
This API is used to query the permission policies of a specified bucket.
Sample request
cos.getBucketPolicy({
    Bucket: 'examplebucket-1250000000', /*Required*/
    Region: 'COS_REGION',     /* Bucket region. Required */
}, function(err, data) {
    console.log(err || data);
});
Sample response
{
    "Policy": {
        "version": "2.0",
        "Statement": [{
            "Action": [
                "name/cos:PutObject",
                "name/cos:InitiateMultipartUpload",
                "name/cos:ListMultipartUploads",
                "name/cos:ListParts",
                "name/cos:UploadPart",
                "name/cos:CompleteMultipartUpload"
            ],
            "Effect": "allow",
            "Principal": {
                "qcs": ["qcs::cam::uin/100000000001:uin/100000000001"]
            },
            "Resource": ["qcs::cos:ap-beijing:uid/1250000000:examplebucket-1250000000/*"],
            "Sid": "costs-1539833197000000307620-46518-39"
        }]
    },
    "statusCode": 200,
    "headers": {}
}
Parameter description
Parameter Name
Description
Type
Required
Bucket
Bucket for which the permission policy is queried in the format: BucketName-APPID
String
Yes
Region
Bucket region. For the enumerated values, see Regions and Access Domain Names
String
Yes
Callback function description
function(err, data) { ... }
Parameter Name            
Description
Type
err
Object returned when an error (network error or service error) occurs. If the request is successful, this is null. For more information, see Error Codes.
Object
data
Data returned when the request is successful. If the request fails, this is null.
Object
- Policy
Permission policy. For more information, see Cloud Access Management Practices > Policy Syntax
Object
- - version
Version number, fixed as 2.0
String
- - statement
List of permission policy statements
ObjectArray
- - - effect
Effect; enumerated values: allow, deny
String
- - - principal
Identity information
ObjectArray
- - - - qcs
ID string. 
Format: qcs::cam::uin/100000000001:uin/100000000011. 
100000000001 is a root account, while 100000000011 is a sub-account
String
- - - action
List of related actions subject to the policy. Wildcard * is supported
StringArray
- - - resource
List of resource identification strings.
Format: qcs::cos:<Region>:uid/<AppId>:<ShortBucketName>/*
Example: qcs::cos:ap-beijing:uid/1250000000:examplebucket/*
StringArray
- - - condition
Constraints; can be left blank. For details, see Condition.
ObjectArray
Deleting a bucket policy
Feature description
This API is used to delete the permission policy of a specified bucket.
Only the Bucket owner is allowed to initiate this request. You will receive a "204 No Content" error if the permission policy does not exist.
Sample request
cos.deleteBucketPolicy({
    Bucket: 'examplebucket-1250000000', /*Required*/
    Region: 'COS_REGION',     /* Bucket region. Required */
}, function(err, data) {
    console.log(err || data);
});
Parameter description
Parameter Name
Description
Type
Required
Bucket
Bucket for which the permission policy is deleted in the format: BucketName-APPID
String
Yes
Region
Bucket region. For the enumerated values, see Regions and Access Domain Names
String
Yes
Callback function description
function(err, data) { ... }
Parameter Name            
Description
Type
err
Object returned when an error (network error or service error) occurs. If the request is successful, this is null. For more information, see Error Codes.
Object
- statusCode
HTTP status code returned by the request, such as 200, 403, and 404
Number
- headers
Header information returned by the request
Object
data
Data returned when the request is successful. If the request fails, this is null.
Object
- statusCode
HTTP status code returned by the request, such as 200, 403, and 404
Number
- headers
Header information returned by the request
Object
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tencent cloud

Recent Pages

Bucket Policy

Overview

Setting a bucket policy

Feature description

Sample request

Parameter description

Callback function description

Querying a bucket policy

Feature description

Sample request

Sample response

Parameter description

Callback function description

Deleting a bucket policy

Feature description

Sample request

Parameter description

Callback function description

Was this page helpful?

Was this page helpful?

API	Operation	Description
PUT Bucket policy	Setting a bucket policy	Sets a permission policy for a specified bucket
GET Bucket policy	Querying a bucket policy	Queries the permission policy of a specified bucket
DELETE Bucket policy	Deleting a bucket policy	Deletes the permission policy of a specified bucket

Parameter Name	Description	Type	Required
Bucket	Bucket for which the bucket policy is configured in the format: `BucketName-APPID`	String	Yes
Region	Bucket region. For the enumerated values, see Regions and Access Domain Names	String	Yes
Policy	Permission policy. For more information, see Cloud Access Management Practices > Policy Syntax	Object	Yes
- version	Version number, fixed as 2.0	String	Yes
- statement	List of permission policy statements	ObjectArray	Yes
- - effect	Effect; enumerated values: `allow`, `deny`	String	Yes
- - principal	Identity information	ObjectArray	Yes
- - - qcs	ID string Format: `qcs::cam::uin/100000000001:uin/100000000011` Here, 100000000001 is a root account, while 100000000011 is a sub-account	String	Yes
- - action	List of related actions subject to the policy. Wildcard `*` is supported	StringArray	Yes
- - resource	List of resource identification strings. Format: `qcs::cos:<Region>:uid/<AppId>:<ShortBucketName>/` Example: `qcs::cos:ap-beijing:uid/1250000000:examplebucket/`	StringArray	Yes
- - condition	Constraints; can be left blank. For details, see Element Reference.	String	No

Parameter	Description	Type
err	Object returned when an error (network error or service error) occurs. If the request is successful, this is null. For more information, see Error Codes.	Object
- statusCode	HTTP status code returned by the request, such as `200`, `403`, and `404`	Number
- headers	Header information returned by the request	Object
data	Data returned when the request is successful. If the request fails, this is null.	Object
- statusCode	HTTP status code returned by the request, such as `200`, `403`, and `404`	Number
- headers	Header information returned by the request	Object

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Recent Pages

Bucket Policy

Overview

Setting a bucket policy

Feature description

Sample request

Parameter description

Callback function description

Querying a bucket policy

Feature description

Sample request

Sample response

Parameter description

Callback function description

Deleting a bucket policy

Feature description

Sample request

Parameter description

Callback function description

Was this page helpful?

Was this page helpful?