Setting Lifecycle Rules

Setting an Object Transition Policy

Sample code:

 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];
    
// Set lifecycle rules.
OBSLifecycleRule *rule = [[OBSLifecycleRule alloc] initWithID:@"delete-2-days" prefix:@"test/" status:OBSLifecycleStatusEnabled];
// Configure objects to be transitioned to OBS Infrequent Access 30 days after creation.
OBSLifecycleTransition* transitionStandard = [[OBSLifecycleTransition alloc]initWithDays:[NSNumber numberWithInteger:30] storageClass:OBSStorageClassStandardIA];
// Configure objects to be transitioned to a specific storage class 60 days after creation.
OBSLifecycleTransition* transitionGlacier= [[OBSLifecycleTransition alloc]initWithDays:[NSNumber numberWithInteger:60] storageClass:OBSStorageClassGlacier];
// Configure objects to be transitioned to OBS Standard after being noncurrent for 30 days.
OBSLifecycleNoncurrentVersionTransition* noncurrentTransistionStandard = [[OBSLifecycleNoncurrentVersionTransition alloc]initWithDays:[NSNumber numberWithInteger:30] storageClass:OBSStorageClassStandardIA];
//Configure objects to be transitioned to OBS Archive after being noncurrent for 60 days.
OBSLifecycleNoncurrentVersionTransition* noncurrentTransistionGlacier= [[OBSLifecycleNoncurrentVersionTransition alloc]initWithDays:[NSNumber numberWithInteger:60] storageClass:OBSStorageClassGlacier];

    
[rule.transitionList addObject:transitionStandard];
[rule.transitionList addObject:transitionGlacier];
    
[rule.noncurrentVersionTransitionList addObject:noncurrentTransistionStandard];
[rule.noncurrentVersionTransitionList addObject:noncurrentTransistionGlacier];
OBSLifecycleExpiration* expiration = [[OBSLifecycleExpiration alloc]initWithDays:[NSNumber numberWithInteger:61]];
OBSLifecycleNoncurrentVersionExpiration* noncurrentExpiration = [[OBSLifecycleNoncurrentVersionExpiration alloc]initWithDays:[NSNumber numberWithInteger:61]];

rule.expiration = expiration;
rule.noncurrentVersionExpiration  = noncurrentExpiration;
    
OBSSetBucketLifecycleRequest *request = [[OBSSetBucketLifecycleRequest alloc]initWithBucketName:@"bucketname" ];
[request.lifecycleRuleList addObject: rule];
OBSLifecycleRule* rule2 = [rule copy];
rule2.ID = @"123";
rule2.prefix = @"test1/";
[request.lifecycleRuleList addObject: rule2];
    
 [client setBucketLifecycle:request completionHandler:^(OBSSetBucketLifecycleResponse *response, NSError *error){
        NSLog(@"%@",response);
 }];

Setting an Object Expiration Time

Sample code: