设置生命周期规则

设置对象转换策略

以下代码展示了如何设置最新版本对象和历史版本对象的转换策略：

 static OBSClient *client;
 NSString *endPoint = @"your-endpoint";
 
// 认证用的ak和sk硬编码到代码中或者明文存储都有很大的安全风险，建议在配置文件或者环境变量中密文存放，使用时解密，确保安全；本示例以ak和sk保存在环境变量中为例，运行本示例前请先在本地环境中设置环境变量AccessKeyID和SecretAccessKey。
// 您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.html
char* ak_env = getenv("AccessKeyID");
char* sk_env = getenv("SecretAccessKey");
NSString *AK = [NSString stringWithUTF8String:ak_env];
NSString *SK = [NSString stringWithUTF8String:sk_env];

    
// 初始化身份验证
OBSStaticCredentialProvider *credentialProvider = [[OBSStaticCredentialProvider alloc] initWithAccessKey:AK secretKey:SK];
    
//初始化服务配置
OBSServiceConfiguration *conf = [[OBSServiceConfiguration alloc] initWithURLString:endPoint credentialProvider:credentialProvider];
    
// 初始化client
client = [[OBSClient alloc] initWithConfiguration:conf];
    
// 设置一条规则
OBSLifecycleRule *rule = [[OBSLifecycleRule alloc] initWithID:@"delete-2-days" prefix:@"test/" status:OBSLifecycleStatusEnabled];
// 创建30天后转换成低频访问存储
OBSLifecycleTransition* transitionStandard = [[OBSLifecycleTransition alloc]initWithDays:[NSNumber numberWithInteger:30] storageClass:OBSStorageClassStandardIA];
// 创建60天后转换成指定存储
OBSLifecycleTransition* transitionGlacier= [[OBSLifecycleTransition alloc]initWithDays:[NSNumber numberWithInteger:60] storageClass:OBSStorageClassGlacier];
// 30天后历史版本转换成标准存储
OBSLifecycleNoncurrentVersionTransition* noncurrentTransistionStandard = [[OBSLifecycleNoncurrentVersionTransition alloc]initWithDays:[NSNumber numberWithInteger:30] storageClass:OBSStorageClassStandardIA];
//60天后历史版本转换成归档存储
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];
    
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);
 }];

设置过期时间

以下代码展示了如何设置最新版本对象和历史版本对象的过期时间：