No todos los datos que se cargan en OSS requieren acceso frecuente. Por motivos de cumplimiento normativo o archivado, ciertos datos deben guardarse en una clase de almacenamiento en frío. En otros escenarios, es posible que necesite eliminar por lotes los datos que ya no se usan dentro de un bucket. Las reglas de ciclo de vida se configuran con base en la fecha de última modificación. Estas reglas transfieren objetos de forma periódica a clases de almacenamiento más frías o los eliminan para reducir los costos de almacenamiento.
Notas
Antes de configurar reglas de ciclo de vida basadas en la fecha de última modificación de los objetos, familiarícese con esta función. Para obtener más información, consulte Lifecycle rules based on the last modified time.
En este tema se utiliza el endpoint público de la región China (Hangzhou). Si necesita acceder a OSS desde otros servicios de Alibaba Cloud ubicados en la misma región que OSS, utilice un endpoint interno. Para obtener más información sobre las regiones y los endpoints de OSS, consulte Regions and endpoints.
Este tema muestra cómo crear una instancia de OSSClient con un endpoint de OSS. Para conocer configuraciones alternativas, como usar un dominio personalizado o autenticarse con credenciales de Security Token Service (STS), consulte Create an OssClient instance.
Para configurar reglas de ciclo de vida, se requiere el permiso
oss:PutBucketLifecycle. Para consultarlas, se necesita el permisooss:GetBucketLifecycle. Para borrarlas, debe contar con el permisooss:DeleteBucketLifecycle. Para obtener más información, consulte Grant a custom policy.
Establecer reglas de ciclo de vida
A continuación se muestra un ejemplo de código para establecer reglas de ciclo de vida en el bucket examplebucket con base en la fecha de última modificación. Si desea modificar una o más reglas después de configurarlas, consulte How do I modify one or more lifecycle rules?.
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
int main(void)
{
/* Initialize the OSS account information. */
/* Set yourEndpoint to the Endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Endpoint to https://oss-cn-hangzhou.aliyuncs.com. */
std::string Endpoint = "yourEndpoint";
/* Set yourRegion to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Region to cn-hangzhou. */
std::string Region = "yourRegion";
/* Specify the bucket name. For example, examplebucket. */
std::string BucketName = "examplebucket";
/* Initialize network resources. */
InitializeSdk();
ClientConfiguration conf;
conf.signatureVersion = SignatureVersionType::V4;
/* Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set. */
auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
OssClient client(Endpoint, credentialsProvider, conf);
client.SetRegion(Region);
SetBucketLifecycleRequest request(BucketName);
std::string date("2022-10-12T00:00:00.000Z");
/* Set tags. */
Tagging tagging;
tagging.addTag(Tag("key1", "value1"));
tagging.addTag(Tag("key2", "value2"));
/* Specify a lifecycle rule. */
auto rule1 = LifecycleRule();
rule1.setID("rule1");
rule1.setPrefix("test1/");
rule1.setStatus(RuleStatus::Enabled);
rule1.setExpiration(3);
rule1.setTags(tagging.Tags());
/* Specify the expiration time. */
auto rule2 = LifecycleRule();
rule2.setID("rule2");
rule2.setPrefix("test2/");
rule2.setStatus(RuleStatus::Disabled);
rule2.setExpiration(date);
/* rule3 is a lifecycle rule for a bucket with versioning enabled. */
auto rule3 = LifecycleRule();
rule3.setID("rule3");
rule3.setPrefix("test3/");
rule3.setStatus(RuleStatus::Disabled);
/* Transition objects to the Archive storage class 365 days after they are last modified. */
auto transition = LifeCycleTransition();
transition.Expiration().setDays(365);
transition.setStorageClass(StorageClass::Archive);
rule3.addTransition(transition);
/* Automatically remove expired delete markers. */
rule3.setExpiredObjectDeleteMarker(true);
/* Transition noncurrent versions of objects to the Infrequent Access storage class 10 days after they become noncurrent. */
auto transition1 = LifeCycleTransition();
transition1.Expiration().setDays(10);
transition1.setStorageClass(StorageClass::IA);
/* Transition noncurrent versions of objects to the Archive storage class 20 days after they become noncurrent. */
auto transition2 = LifeCycleTransition();
transition2.Expiration().setDays(20);
transition2.setStorageClass(StorageClass::Archive);
/* Delete objects 30 days after they become noncurrent versions. */
auto expiration = LifeCycleExpiration(30);
rule3.setNoncurrentVersionExpiration(expiration);
LifeCycleTransitionList noncurrentVersionStorageTransitions{transition1, transition2};
rule3.setNoncurrentVersionTransitionList(noncurrentVersionStorageTransitions);
/* Set the lifecycle rules. */
LifecycleRuleList list{rule1, rule2, rule3};
request.setLifecycleRules(list);
auto outcome = client.SetBucketLifecycle(request);
if (!outcome.isSuccess()) {
/* Handle exceptions. */
std::cout << "SetBucketLifecycle fail" <<
",code:" << outcome.error().Code() <<
",message:" << outcome.error().Message() <<
",requestId:" << outcome.error().RequestId() << std::endl;
return -1;
}
/* Release network resources. */
ShutdownSdk();
return 0;
}Consultar reglas de ciclo de vida
El siguiente ejemplo de código muestra cómo consultar las reglas de ciclo de vida configuradas en el bucket denominado examplebucket:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
std::string ToStorageClassName(const StorageClass& storageClass) {
switch (storageClass) {
case StorageClass::Standard:
return "Standard";
case StorageClass::IA:
return "IA";
case StorageClass::Archive:
return "Archive";
case StorageClass::ColdArchive:
return "ColdArchive";
default:
return "Unknown";
}
}
int main(void)
{
/* Initialize the OSS account information. */
/* Set yourEndpoint to the Endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Endpoint to https://oss-cn-hangzhou.aliyuncs.com. */
std::string Endpoint = "yourEndpoint";
/* Set yourRegion to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Region to cn-hangzhou. */
std::string Region = "yourRegion";
/* Specify the bucket name. For example, examplebucket. */
std::string BucketName = "examplebucket";
/* Initialize network resources. */
InitializeSdk();
ClientConfiguration conf;
conf.signatureVersion = SignatureVersionType::V4;
/* Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set. */
auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
OssClient client(Endpoint, credentialsProvider, conf);
client.SetRegion(Region);
/* View the lifecycle rules. */
auto outcome = client.GetBucketLifecycle(BucketName);
if (outcome.isSuccess()) {
std::cout << "GetBucketLifecycle success," << std::endl;
for (auto const rule : outcome.result().LifecycleRules()) {
std::cout << "rule:" << rule.ID() << "," << rule.Prefix() << "," << rule.Status() << ","
"hasExpiration:" << rule.hasExpiration() << "," <<
"hasTransitionList:" << rule.hasTransitionList() << "," << std::endl;
auto taglist = rule.Tags();
for (const auto& tag : taglist)
{
std::cout << "GetBucketLifecycle tag success, Key:"
<< tag.Key() << "; Value:" << tag.Value() << std::endl;
}
/* Check whether to automatically remove expired delete markers. */
if (rule.ExpiredObjectDeleteMarker()) {
std::cout << "rule expired delete marker: " << rule.ExpiredObjectDeleteMarker() << std::endl;
}
/* View the storage class transition rules for noncurrent versions of objects. */
if (rule.hasNoncurrentVersionTransitionList()) {
for (auto const lifeCycleTransition : rule.NoncurrentVersionTransitionList()) {
std::cout << "rule noncurrent versions trans days:" << std::to_string(lifeCycleTransition.Expiration().Days()) <<
" trans storage class: " << ToStorageClassName(lifeCycleTransition.StorageClass()) << std::endl;
}
}
/* View the expiration rules for noncurrent versions of objects. */
if (rule.hasNoncurrentVersionExpiration()) {
std::cout << "rule noncurrent versions expiration days:" << rule.NoncurrentVersionExpiration().Days() << std::endl;
}
}
}
else {
/* Handle exceptions. */
std::cout << "GetBucketLifecycle fail" <<
",code:" << outcome.error().Code() <<
",message:" << outcome.error().Message() <<
",requestId:" << outcome.error().RequestId() << std::endl;
return -1;
}
/* Release network resources. */
ShutdownSdk();
return 0;
}
Borrar reglas de ciclo de vida
El siguiente ejemplo de código muestra cómo borrar las reglas de ciclo de vida del bucket denominado examplebucket. Si desea eliminar una o más reglas específicas, consulte Delete lifecycle rules.
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
int main(void)
{
/* Initialize the OSS account information. */
/* Set yourEndpoint to the Endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Endpoint to https://oss-cn-hangzhou.aliyuncs.com. */
std::string Endpoint = "yourEndpoint";
/* Set yourRegion to the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Region to cn-hangzhou. */
std::string Region = "yourRegion";
/* Specify the bucket name. For example, examplebucket. */
std::string BucketName = "examplebucket";
/* Initialize network resources. */
InitializeSdk();
ClientConfiguration conf;
conf.signatureVersion = SignatureVersionType::V4;
/* Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set. */
auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
OssClient client(Endpoint, credentialsProvider, conf);
client.SetRegion(Region);
/* Clear the lifecycle rules. */
DeleteBucketLifecycleRequest request(BucketName);
auto outcome = client.DeleteBucketLifecycle(request);
if (!outcome.isSuccess()) {
/* Handle exceptions. */
std::cout << "DeleteBucketLifecycle fail" <<
",code:" << outcome.error().Code() <<
",message:" << outcome.error().Message() <<
",requestId:" << outcome.error().RequestId() << std::endl;
return -1;
}
/* Release network resources. */
ShutdownSdk();
return 0;
}Referencias
Para consultar el código de ejemplo completo sobre reglas de ciclo de vida, visite el ejemplo en GitHub.
Para obtener más información sobre la operación de API que permite establecer reglas de ciclo de vida, consulte PutBucketLifecycle.
Si necesita detalles sobre la operación de API utilizada para consultar reglas de ciclo de vida, consulte GetBucketLifecycle.
Para conocer más acerca de la operación de API que elimina todas las reglas de ciclo de vida, consulte DeleteBucketLifecycle.