Restoring a Specific Archive Object Version

You can call OBSRestoreObjectRequest to restore an Archive object version by specifying versionID. Sample code is as follows:

static OBSClient *client;
NSString *endPoint = @"https://your-endpoint";
// Hard-coded or plaintext AK and SK are risky. For security purposes, encrypt your AK and SK before storing them in the configuration file or environment variables. In this example, the AK and SK are stored in environment variables. Before running the code in this example, configure environment variables AccessKeyID and SecretAccessKey.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
char* ak_env = getenv("AccessKeyID");
char* sk_env = getenv("SecretAccessKey");
if (ak_env == NULL || sk_env == NULL) {
    NSLog(@"Error: AccessKeyID or SecretAccessKey environment variable not set");
    return;
}
NSString *AK = [NSString stringWithUTF8String:ak_env];
NSString *SK = [NSString stringWithUTF8String:sk_env];
    
// Initialize identity authentication.
OBSStaticCredentialProvider *credentialProvider = [[OBSStaticCredentialProvider alloc] initWithAccessKey:AK secretKey:SK];
    
//Initialize service configuration.
OBSServiceConfiguration *conf = [[OBSServiceConfiguration alloc] initWithURLString:endPoint credentialProvider:credentialProvider];
    
// Initialize an instance of OBSClient.
client = [[OBSClient alloc] initWithConfiguration:conf];
// Restore an Archive object.
OBSRestoreObjectRequest *request = [[OBSRestoreObjectRequest alloc]initWithBucketName:@"bucketname" objectKey:@"objectname" storeDays:[NSNumber numberWithInt:30]];//1 to 30
request.restoreTier = OBSRestoreTierExpedited;
    
// Version ID of a versioning object
request.versionID = @"Version ID of a versioning object";
[client restoreObject:request completionHandler:^(OBSRestoreObjectResponse *response, NSError *error){
    NSLog(@"%@",response);
}];

• For details about the meanings, causes, and handling methods of possible error codes returned during the operation, see OBS Server-Side Error Codes, SDK Custom Exceptions, and SDK Common Response Headers.

Repeated restorations from the Archive storage class extend the restoration's validity period. Note that you will be billed for each restoration.