Obtaining an Online Decompression Policy (SDK for C)

#include "eSDKOBS.h"
#include <stdio.h>
#include <string.h>
obs_status response_properties_callback(const obs_response_properties *properties, void *callback_data);
void response_complete_callback(obs_status status, const obs_error_details *error, void *callback_data);
typedef struct CompressPolicyResult
{
    obs_compress_policy_rule *rules;
    unsigned int rule_count;
    obs_status ret_status;
} CompressPolicyResult;
obs_status get_compress_policy_callback(obs_compress_policy_rule *rules_return,
                                         unsigned int rule_number, void *callback_data)
{
    CompressPolicyResult *result = (CompressPolicyResult *)callback_data;
    result->rules = rules_return;
    result->rule_count = rule_number;
    return OBS_STATUS_OK;
}
int main()
{
    obs_initialize(OBS_INIT_ALL);
    obs_options options;
    init_obs_options(&options);
    // Enter the endpoint corresponding to the bucket for host_name. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
    options.bucket_options.host_name = "obs.ap-southeast-1.myhuaweicloud.com";
    // Hard-coded or plaintext AK and SK are risky. For security purposes, encrypt your AK and SK and store them in the configuration file or environment variables.
    // In this example, the AK and SK are stored in environment variables for identity authentication. Before running the code in this example, configure local environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY.
    options.bucket_options.access_key = getenv("ACCESS_KEY_ID");
    options.bucket_options.secret_access_key = getenv("SECRET_ACCESS_KEY");
    options.bucket_options.bucket_name = "example-bucket-name";
    obs_get_bucket_compress_policy_handler handler = {0};
    handler.response_handler.properties_callback = &response_properties_callback;
    handler.response_handler.complete_callback = &response_complete_callback;
    handler.get_bucket_compress_policy_callback = &get_compress_policy_callback;
    CompressPolicyResult result;
    memset(&result, 0, sizeof(CompressPolicyResult));
    result.ret_status = OBS_STATUS_BUTT;
    get_bucket_compress_policy(&options, &handler, &result);
    if (OBS_STATUS_OK == result.ret_status) {
        printf("get bucket compress policy successfully.\n");
        printf("rule count: %u\n", result.rule_count);
        for (unsigned int i = 0; i < result.rule_count; i++) {
            printf("rule[%u]: id=%s, suffix=%s, overwrite=%d, decompress_path=%s, policy_type=%s\n",
                   i,
                   result.rules[i].id ? result.rules[i].id : "(null)",
                   result.rules[i].suffix ? result.rules[i].suffix : "(null)",
                   result.rules[i].overwrite,
                   result.rules[i].decompress_path ? result.rules[i].decompress_path : "(null)",
                   result.rules[i].policy_type ? result.rules[i].policy_type : "(null)");
        }
    } else {
        printf("get bucket compress policy failed(%s).\n", obs_get_status_name(result.ret_status));
    }
    obs_deinitialize();
}
obs_status response_properties_callback(const obs_response_properties *properties, void *callback_data)
{
    (void)properties; (void)callback_data;
    return OBS_STATUS_OK;
}
void response_complete_callback(obs_status status, const obs_error_details *error, void *callback_data)
{
    if (callback_data) {
        CompressPolicyResult *result = (CompressPolicyResult *)callback_data;
        result->ret_status = status;
    }
    if (error && error->message) { printf("Error: %s\n", error->message); }
}