追加オブジェクトに対して copyObject は実行できません。
メモリからのデータの追加
次のコードを実行し、メモリからデータを追加します。
#include "oss_api.h"
#include "aos_http_io.h"
const char *endpoint = "<yourEndpoint>";
const char *access_key_id = "<yourAccessKeyId>";
const char *access_key_secret = "<yourAccessKeySecret>";
const char *bucket_name = "<yourBucketName>";
const char *object_name = "<yourObjectName>";
const char *object_content = "More than just cloud.";
void init_options(oss_request_options_t *options)
{
options->config = oss_config_create(options->pool);
/* Use a char* string to initialize aos_string_t. */
aos_str_set(&options->config->endpoint, endpoint);
aos_str_set(&options->config->access_key_id, access_key_id);
aos_str_set(&options->config->access_key_secret, access_key_secret);
/* Determine whether the CNAME is used. The value 0 indicates that the CNAME is not used. */
options->config->is_cname = 0;
/* Configure network parameters, such as timeout. */
options->ctl = aos_http_controller_create(options->pool, 0);
}
int main(int argc, char *argv[])
{
/* Call the aos_http_io_initialize method in main() to initialize global resources, such as networks and memories. */
if (aos_http_io_initialize(NULL, 0) ! = AOSE_OK) {
exit(1);
}
/* Memory pool used to manage memories, equivalent to apr_pool_t. The implementation code is included in the apr library. */
aos_pool_t *pool;
/* Re-create a memory pool. The second parameter is NULL, indicating that the new pool does not inherit any other memory pool. */
aos_pool_create(&p, NULL);
/* Create and initialize options. This parameter includes global configuration information, such as endpoint, access_key_id, acces_key_secret, is_cname, and curl. */
oss_request_options_t *oss_client_options;
/* Allocate the memories in the memory pool to options. */
oss_client_options = oss_request_options_create(pool);
/* Initialize oss_client_options. */
init_options(oss_client_options);
/* Initialize parameters. */
aos_string_t bucket;
aos_string_t object;
aos_list_t buffer;
int64_t position = 0;
char *next_append_position = NULL;
aos_buf_t *content = NULL;
aos_table_t *headers1 = NULL;
aos_table_t *headers2 = NULL;
aos_table_t *resp_headers = NULL;
aos_status_t *resp_status = NULL;
aos_str_set(&bucket, bucket_name);
aos_str_set(&object, object_name);
headers1 = aos_table_make(pool, 0);
/* Obtain the position where the object is appended for the first time. */
resp_status = oss_head_object(oss_client_options, &bucket, &object, headers1, &resp_headers);
if (aos_status_is_ok(resp_status)) {
next_append_position = (char*)(apr_table_get(resp_headers, "x-oss-next-append-position"));
position = atoi(next_append_position);
}
/* Append the file. */
headers2 = aos_table_make(pool, 0);
aos_list_init(&buffer);
content = aos_buf_pack(pool, object_content, strlen(object_content));
aos_list_add_tail(&content->node, &buffer);
resp_status = oss_append_object_from_buffer(oss_client_options, &bucket, &object, position, &buffer, headers2, &resp_headers);
if (aos_status_is_ok(resp_status)) {
printf("append object from buffer succeeded\n");
} else {
printf("append object from buffer failed\n");
}
/* Release the memory pool, that is, the memories allocated to resources during the request. */
aos_pool_destroy(pool);
/* Release the allocated global resources. */
aos_http_io_deinitialize();
return 0;
}
ローカルファイルからのデータの追加
ローカルファイルからデータを追加するには、次のコードを実行します。
#include "oss_api.h"
#include "aos_http_io.h"
const char *endpoint = "<yourEndpoint>";
const char *access_key_id = "<yourAccessKeyId>";
const char *access_key_secret = "<yourAccessKeySecret>";
const char *bucket_name = "<yourBucketName>";
const char *object_name = "<yourObjectName>";
const char *local_filename = "<yourLocalFilename>";
void init_options(oss_request_options_t *options)
{
options->config = oss_config_create(options->pool);
/* Use a char* string to initialize aos_string_t. */
aos_str_set(&options->config->endpoint, endpoint);
aos_str_set(&options->config->access_key_id, access_key_id);
aos_str_set(&options->config->access_key_secret, access_key_secret);
/* Determine whether the CNAME is used. The value 0 indicates that the CNAME is not used. */
options->config->is_cname = 0;
/* Configure network parameters, such as timeout. */
options->ctl = aos_http_controller_create(options->pool, 0);
}
int main(int argc, char *argv[])
{
/* Call the aos_http_io_initialize method in main() to initialize global resources, such as networks and memories. */
if (aos_http_io_initialize(NULL, 0) ! = AOSE_OK) {
exit(1);
}
/* Memory pool used to manage memories, equivalent to apr_pool_t. The implementation code is included in the apr library. */
aos_pool_t *pool;
/* Re-create a memory pool. The second parameter is NULL, indicating that the new pool does not inherit any other memory pool. */
aos_pool_create(&p, NULL);
/* Create and initialize options. This parameter includes global configuration information, such as endpoint, access_key_id, acces_key_secret, is_cname, and curl. */
oss_request_options_t *oss_client_options;
/* Allocate the memories in the memory pool to options. */
oss_client_options = oss_request_options_create(pool);
/* Initialize oss_client_options. */
init_options(oss_client_options);
/* Initialize parameters. */
aos_string_t bucket;
aos_string_t object;
aos_string_t file;
int64_t position = 0;
char *next_append_position = NULL;
aos_table_t *headers1 = NULL;
aos_table_t *headers2 = NULL;
aos_table_t *resp_headers = NULL;
aos_status_t *resp_status = NULL;
aos_str_set(&bucket, bucket_name);
aos_str_set(&object, object_name);
aos_str_set(&file, local_filename);
/* Obtain the position where the object is appended for the first time. */
resp_status = oss_head_object(oss_client_options, &bucket, &object, headers1, &resp_headers);
if(aos_status_is_ok(resp_status)) {
next_append_position = (char*)(apr_table_get(resp_headers, "x-oss-next-append-position"));
position = atoi(next_append_position);
}
/* Append the file. */
resp_status = oss_append_object_from_file(oss_client_options, &bucket, &object, position, &file, headers2, &resp_headers);
/* Determine whether the append upload is successful. */
if (aos_status_is_ok(resp_status)) {
printf("append object from file succeeded\n");
} else {
printf("append object from file failed\n");
}
/* Release the memory pool, that is, the memories allocated to resources during the request. */
aos_pool_destroy(pool);
/* Release the allocated global resources. */
aos_http_io_deinitialize();
return 0;
}
ファイルが既に存在する場合は、以下のことが起こります。
- 追加アップロードでファイルをアップロードできない場合、ObjectNotAppendable の例外が発生します。
- 追加アップロードでファイルをアップロードできる場合、ファイルは Put Object メソッドによってアップロードされ、既存のオブジェクトに上書きされます。 オブジェクトタイプが Normal Object に変更されます。 Head Object 操作が実行されると、オブジェクトタイプを示す x-oss-object-type をシステムが返します。