Help & DocumentationCloud Object StorageSDK Documentation.NET SDKActions on Buckets

Actions on Buckets

Last updated: 2019-11-22 12:34:19

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Contents：

Introduction

This document provides an overview of APIs and SDK sample codes related to the basic operations and the access control list (ACL) for a bucket.

Basic operations

API Operation Description
GET Service Gets the bucket list Gets the list of all bucket under the specified account
PUT Bucket Creates a bucket Creates a bucket under the specified account
HEAD Bucket Search for the bucket and the access to it Determines whether the bucket and the permission to access the bucket exist
GET Bucket location Gets the location information of a bucket Gets the information on the location where a bucket locates
DELETE Bucket Deletes a bucket Deletes an empty bucket under the specified account

ACL

API Operation Description
PUT Bucket acl Sets a bucket ACL Sets an ACL for a bucket
GET Bucket acl Gets the bucket ACL Gets the ACL of a bucket

Basic Operations

Get the bucket list

Feature

This API (Bucket list) is used to get the list of all buckets under the specified account.

Method prototype

GetServiceResult GetService(GetServiceRequest request);

void GetService(GetServiceRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    GetServiceRequest request = new GetServiceRequest();
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    GetServiceResult result = cosXml.GetService(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{    
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
GetServiceRequest request = new GetServiceRequest();
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.GetService(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        GetServiceResult result = cosResult as GetServiceResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
});
*/

Parameters

Parameter Name Setting Method Description Type
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through GetServiceResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.
listAllMyBuckets ListAllMyBuckets The list of buckets under the specified account is returned

CosClientException or CosServerException exception occurs when the operation fails.

Create a bucket

Feature

This API (Put Bucket) is used to create a bucket.

Method prototype

PutBucketResult PutBucket(PutBucketRequest request);

void PutBucket(PutBucketRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    PutBucketRequest request = new PutBucketRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    PutBucketResult result = cosXml.PutBucket(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
PutBucketRequest request = new PutBucketRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.PutBucket(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        PutBucketResult result = cosResult as PutBucketResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
});
*/

Parameters

Parameter Name Setting Method Description Type
bucket Construction method Bucket name. Format: BucketName-APPID string
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through PutBucketResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.

CosClientException or CosServerException exception occurs when the operation fails.

Search for a bucket

Feature

This API (Head Bucket) is used to determine whether the specified bucket exists.

Method prototype

HeadBucketResult HeadBucket(HeadBucketRequest request);

void HeadBucket(HeadBucketRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    HeadBucketRequest request = new HeadBucketRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    HeadBucketResult result = cosXml.HeadBucket(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{    
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
HeadBucketRequest request = new HeadBucketRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.HeadBucket(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        HeadBucketResult result = cosResult as HeadBucketResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
    });
*/

Get the bucket location

Feature

This API (Get Bucket Location) is used to get the location information of the specified bucket.

Method prototype

GetBucketLocationResult GetBucketLocation(GetBucketLocationRequest request);

void GetBucketLocation(GetBucketLocationRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    GetBucketLocationRequest request = new GetBucketLocationRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    GetBucketLocationResult result = cosXml.GetBucketLocation(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{    
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
GetBucketLocationRequest request = new GetBucketLocationRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.GetBucketLocation(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        GetBucketLocationResult result = cosResult as GetBucketLocationResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {    
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
    });
*/

Parameters

Parameter Name Setting Method Description Type
bucket Construction method Bucket name. Format: BucketName-APPID string
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through GetBucketLocationResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.
locationConstraint LocationConstraint The region information of the bucket is returned

CosClientException or CosServerException exception occurs when the operation fails.

Delete a bucket

Feature

This API (Delete Bucket) is used to delete the specified bucket.

Method prototype

DeleteBucketResult DeleteBucket(DeleteBucketRequest request);

void DeleteBucket(DeleteBucketRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    DeleteBucketRequest request = new DeleteBucketRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    DeleteBucketResult result = cosXml.DeleteBucket(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
DeleteBucketRequest request = new DeleteBucketRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.DeleteBucket(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        DeleteBucketResult result = cosResult as DeleteBucketResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
});
*/

Parameters

Parameter Name Setting Method Description Type
bucket Construction method Bucket name. Format: BucketName-APPID string
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through DeleteBucketResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.

CosClientException or CosServerException exception occurs when the operation fails.

ACL

Set a bucket ACL

Feature

This API (Put Bucket ACL) is used to set an ACL for the specified bucket.

Method prototype

PutBucketACLResult PutBucketACL(PutBucketACLRequest request);

void PutBucketACL(PutBucketACLRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    PutBucketACLRequest request = new PutBucketACLRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Set private read and write permissions
    request.SetCosACL(CosACL.PRIVATE);
    //Grant the read permission to the account 1131975903
    COSXML.Model.Tag.GrantAccount readAccount = new COSXML.Model.Tag.GrantAccount();
    readAccount.AddGrantAccount("1131975903", "1131975903");
    request.SetXCosGrantRead(readAccount);
    //Execute the request
    PutBucketACLResult result = cosXml.PutBucketACL(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
PutBucketACLRequest request = new PutBucketACLRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
//Set private read and write permissions
request.SetCosACL(CosACL.PRIVATE);
//Grant the read permission to the account 1131975903
COSXML.Model.Tag.GrantAccount readAccount = new COSXML.Model.Tag.GrantAccount();
readAccount.AddGrantAccount("1131975903", "1131975903");
request.SetXCosGrantRead(readAccount);
//Execute the request
cosXml.PutBucketACL(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        PutBucketACLResult result = cosResult as PutBucketACLResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
    });
*/

Parameters

Parameter Name Setting Method Description Type
bucket Construction method Bucket name. Format: BucketName-APPID string
cosAcl SetCosAcl Sets the ACL permissions for the bucket string
grandtAccout SetXCosGrantRead, SetXCosGrantWrite, or SetXCosReadWrite Grants users the read and write permissions GrantAccount
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through PutBucketACLResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.

CosClientException or CosServerException exception occurs when the operation fails.

Get the bucket ACL

Feature

This API (Get Bucket ACL) is used to get the ACL of the specified bucket.

Method prototype

GetBucketACLResult GetBucketACL(GetBucketACLRequest request);

void GetBucketACL(GetBucketACLRequest request, COSXML.Callback.OnSuccessCallback<CosResult> successCallback, COSXML.Callback.OnFailedCallback failCallback);

Request example

try
{
    string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
    GetBucketACLRequest request = new GetBucketACLRequest(bucket);
    //Set the validity period of the signature
    request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
    //Execute the request
    GetBucketACLResult result = cosXml.GetBucketACL(request);
    //Request successful
    Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{    
    //Request failed
    Console.WriteLine("CosClientException: " + clientEx.Message);
}
catch (COSXML.CosException.CosServerException serverEx)
{
    //Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}

/**
//Async method
string bucket = "examplebucket-1250000000"; //Format: BucketName-APPID
GetBucketACLRequest request = new GetBucketACLRequest(bucket);
//Set the validity period of the signature
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.GetBucketACL(request, 
    delegate(COSXML.Model.CosResult cosResult)
    {
        //Request successful
        GetBucketACLResult result = cosResult as GetBucketACLResult;
        Console.WriteLine(result.GetResultInfo());

    }, 
    delegate(COSXML.CosException.CosClientException clientEx, COSXML.CosException.CosServerException serverEx)
    {    
        //Request failed
        if (clientEx != null)
        {
            Console.WriteLine("CosClientException: " + clientEx.Message);
        }
        else if (serverEx != null)
        {
            Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }
    });
*/

Parameters

Parameter Name Setting Method Description Type
bucket Construction method Bucket name. Format: BucketName-APPID string
signStartTimeSecond SetSign Start time of the signature's validity period long
durationSecond SetSign Duration of the signature's validity period long
headerKeys SetSign Indicates whether to verify the header for the signature List<string>
queryParameterKeys SetSign Indicates whether to verify the query parameters in the request URL for the signature List<string>

Returned result

Request result is returned through GetBucketACLResult.

Member Variable Type Description
httpCode int HTTP Code. A code between [200, 300) indicates a successful operation. Other values indicate a failure.
accessControlPolicy AccessControlPolicy The information of the bucket ACL is returned

CosClientException or CosServerException exception occurs when the operation fails.