Obtaining Bucket Storage Information

If you have any questions during development, post them on the Issues page of GitHub.

The storage information about a bucket includes the number of objects in and the used capacity of the bucket. You can call get_bucket_storage_info to obtain the bucket storage information.

Parameter Description

Field	Type	Mandatory or Optional	Description
option	The context of the bucket. For details, see Configuring option.	Mandatory	Bucket parameter
capacity_length	int	Mandatory	Cache size of the used capacity
capacity	char *	Mandatory	Used capacity
object_number_length	int	Mandatory	Cache size of the object number
object_number	char *	Mandatory	Cache of the object number
handler	obs_response_handler *	Mandatory	Callback function
callback_data	void *	Optional	Callback data

Sample Code

static void test_get_bucket_storage_info(char *bucket_name)
{
    // Create and initialize option.
    obs_options option; 
    obs_status ret_status = OBS_STATUS_BUTT;
    init_obs_options(&option);

    option.bucket_options.host_name = "<your-endpoint>";
    option.bucket_options.bucket_name = "<Your bucketname>";
// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY.
    // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
    option.bucket_options.access_key = getenv("ACCESS_KEY_ID");
    option.bucket_options.secret_access_key = getenv("SECRET_ACCESS_KEY");
    // Define cache of the bucket capacity and cache of the object number.
    char capacity[OBS_COMMON_LEN_256] = {0};
    char obj_num[OBS_COMMON_LEN_256] = {0};

    // Set response callback function.
    obs_response_handler response_handler =
    { 
        NULL,
        &response_complete_callback
    };

    // Obtain bucket storage information.
    get_bucket_storage_info(&option, OBS_COMMON_LEN_256, capacity, OBS_COMMON_LEN_256, obj_num, 
        &response_handler, &ret_status); 

    if (ret_status == OBS_STATUS_OK) {
         printf("get_bucket_storage_info success,bucket=%s objNum=%s capacity=%s\n", 
            bucket_name, obj_num, capacity);
    }
    else
    {
       printf("head bucket failed(%s).\n", obs_get_status_name(ret_status));
    }
}