No todos los datos que se cargan en los buckets de Object Storage Service (OSS) se consultan con frecuencia. Los datos a los que rara vez se accede se almacenan en almacenamiento en frío por motivos de cumplimiento normativo y archivado. Si desea eliminar datos almacenados en varios buckets de OSS al mismo tiempo, configure reglas de ciclo de vida basadas en la última fecha de modificación de los datos. Para reducir los costos de almacenamiento, se recomienda guardar los datos fríos y los datos calientes por separado. Con este fin, configure OSS para que supervise automáticamente los patrones de acceso a los datos, identifique los datos fríos y cambie su clase de almacenamiento. En este escenario, también puede configurar reglas de ciclo de vida basadas en la última fecha de acceso a los datos.
Notas de uso
Antes de configurar reglas de ciclo de vida basadas en la última fecha de modificación o de acceso de los objetos, familiarícese con esta función. Para obtener más información, consulte Lifecycle rules based on the last modified time y Lifecycle rules based on the last access time.
En este tema se utiliza el endpoint público de la región China (Hangzhou). Para acceder a OSS desde otros servicios de Alibaba Cloud en la misma región, use un endpoint interno. Para conocer las regiones y los endpoints compatibles, consulte Regions and endpoints.
En este tema, las credenciales de acceso se obtienen de variables de entorno. Para obtener más información, consulte 配置访问凭证.
Este tema muestra cómo crear una instancia de OSSClient con un endpoint de OSS. Para consultar configuraciones alternativas, como usar un dominio personalizado o autenticarse con credenciales de Security Token Service (STS), consulte Client configuration.
Para configurar reglas de ciclo de vida, necesita el permiso
oss:PutBucketLifecycle. Para consultar reglas de ciclo de vida, necesita el permisooss:GetBucketLifecycle. Para borrar reglas de ciclo de vida, necesita el permisooss:DeleteBucketLifecycle. Para obtener más información, consulte Grant a custom policy.
Configurar reglas de ciclo de vida
A continuación se muestran ejemplos de dos reglas de ciclo de vida. Una regla se configura según la última fecha de modificación de los datos y la otra según la última fecha de acceso. Después de configurar las reglas de ciclo de vida, modifíquelas de acuerdo con sus necesidades de negocio. Para saber cómo modificar reglas de ciclo de vida existentes, consulte Modify lifecycle rules.
Configurar una regla de ciclo de vida basada en la última fecha de modificación que coincida con objetos con un prefijo de nombre y una etiqueta específicos
El siguiente ejemplo de código muestra cómo configurar una regla de ciclo de vida basada en la última fecha de modificación para un bucket llamado examplebucket. La regla coincide con los objetos por prefijo y etiqueta. Según la regla, se cambia la clase de almacenamiento de los objetos coincidentes o se eliminan.
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.common.utils.DateUtil;
import com.aliyun.oss.model.LifecycleRule;
import com.aliyun.oss.model.SetBucketLifecycleRequest;
import com.aliyun.oss.model.StorageClass;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// Create a request by using SetBucketLifecycleRequest.
SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);
// Specify the ID of the lifecycle rule.
String ruleId0 = "rule0";
// Specify the prefix that you want the lifecycle rule to match.
String matchPrefix0 = "A0/";
// Specify the tag that you want the lifecycle rule to match.
Map<String, String> matchTags0 = new HashMap<String, String>();
// Specify the key and value of the tag. In the example, the key is set to owner and the value is set to John.
matchTags0.put("owner", "John");
String ruleId1 = "rule1";
String matchPrefix1 = "A1/";
Map<String, String> matchTags1 = new HashMap<String, String>();
matchTags1.put("type", "document");
String ruleId2 = "rule2";
String matchPrefix2 = "A2/";
String ruleId3 = "rule3";
String matchPrefix3 = "A3/";
String ruleId4 = "rule4";
String matchPrefix4 = "A4/";
String ruleId5 = "rule5";
String matchPrefix5 = "A5/";
String ruleId6 = "rule6";
String matchPrefix6 = "A6/";
// Set the expiration time to three days after the last modified time.
LifecycleRule rule = new LifecycleRule(ruleId0, matchPrefix0, LifecycleRule.RuleStatus.Enabled, 3);
rule.setTags(matchTags0);
request.AddLifecycleRule(rule);
// Specify that objects that are created before the specified date expire.
rule = new LifecycleRule(ruleId1, matchPrefix1, LifecycleRule.RuleStatus.Enabled);
rule.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
rule.setTags(matchTags1);
request.AddLifecycleRule(rule);
// Specify that parts expire three days after they are last modified.
rule = new LifecycleRule(ruleId2, matchPrefix2, LifecycleRule.RuleStatus.Enabled);
LifecycleRule.AbortMultipartUpload abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
abortMultipartUpload.setExpirationDays(3);
rule.setAbortMultipartUpload(abortMultipartUpload);
request.AddLifecycleRule(rule);
// Specify that parts that are created before the specific date expire.
rule = new LifecycleRule(ruleId3, matchPrefix3, LifecycleRule.RuleStatus.Enabled);
abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
abortMultipartUpload.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
rule.setAbortMultipartUpload(abortMultipartUpload);
request.AddLifecycleRule(rule);
// Specify that the storage classes of objects are changed to IA 10 days after they are last modified, and to Archive 30 days after they are last modified.
rule = new LifecycleRule(ruleId4, matchPrefix4, LifecycleRule.RuleStatus.Enabled);
List<LifecycleRule.StorageTransition> storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setStorageClass(StorageClass.IA);
storageTransition.setExpirationDays(10);
storageTransitions.add(storageTransition);
storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setStorageClass(StorageClass.Archive);
storageTransition.setExpirationDays(30);
storageTransitions.add(storageTransition);
rule.setStorageTransition(storageTransitions);
request.AddLifecycleRule(rule);
// Specify that the storage classes of objects that are last modified before October 12, 2022 are changed to Archive.
rule = new LifecycleRule(ruleId5, matchPrefix5, LifecycleRule.RuleStatus.Enabled);
storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
storageTransition.setStorageClass(StorageClass.Archive);
storageTransitions.add(storageTransition);
rule.setStorageTransition(storageTransitions);
request.AddLifecycleRule(rule);
// Specify that rule6 is configured for versioning-enabled buckets.
rule = new LifecycleRule(ruleId6, matchPrefix6, LifecycleRule.RuleStatus.Enabled);
// Specify that the storage classes of objects are changed to Archive 365 days after the objects are last modified.
storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setStorageClass(StorageClass.Archive);
storageTransition.setExpirationDays(365);
storageTransitions.add(storageTransition);
rule.setStorageTransition(storageTransitions);
// Configure the lifecycle rule to automatically delete expired delete markers.
rule.setExpiredDeleteMarker(true);
// Specify that the storage classes of the previous versions of objects are changed to IA 10 days after the objects are last modified.
LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition =
new LifecycleRule.NoncurrentVersionStorageTransition().withNoncurrentDays(10).withStrorageClass(StorageClass.IA);
// Specify that the storage classes of the previous versions of objects are changed to Archive 20 days after the objects are last modified.
LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition2 =
new LifecycleRule.NoncurrentVersionStorageTransition().withNoncurrentDays(20).withStrorageClass(StorageClass.Archive);
// Specify that the previous versions of objects are deleted 30 days after the objects are last modified.
LifecycleRule.NoncurrentVersionExpiration noncurrentVersionExpiration = new LifecycleRule.NoncurrentVersionExpiration().withNoncurrentDays(30);
List<LifecycleRule.NoncurrentVersionStorageTransition> noncurrentVersionStorageTransitions = new ArrayList<LifecycleRule.NoncurrentVersionStorageTransition>();
noncurrentVersionStorageTransitions.add(noncurrentVersionStorageTransition2);
rule.setStorageTransition(storageTransitions);
rule.setNoncurrentVersionExpiration(noncurrentVersionExpiration);
rule.setNoncurrentVersionStorageTransitions(noncurrentVersionStorageTransitions);
request.AddLifecycleRule(rule);
// Initiate a request to configure lifecycle rules.
ossClient.setBucketLifecycle(request);
// Query the lifecycle rules that are configured for the bucket.
List<LifecycleRule> listRules = ossClient.getBucketLifecycle(bucketName);
for(LifecycleRule rules : listRules){
System.out.println("ruleId="+rules.getId()+", matchPrefix="+rules.getPrefix());
}
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}Configurar una regla de ciclo de vida basada en la última fecha de modificación que coincida con objetos sin un prefijo de nombre ni una etiqueta específicos
El siguiente ejemplo de código muestra cómo configurar una regla de ciclo de vida basada en la última fecha de modificación. Esta regla cambia a IA la clase de almacenamiento de los objetos del bucket examplebucket que cumplen las siguientes condiciones, 30 días después de su última modificación: el nombre de los objetos no contiene el prefijo log y los objetos no tienen la etiqueta cuya clave es tag1 y cuyo valor es value1. Estas condiciones se especifican en el elemento Not del nodo filter.
Nota
Solo OSS SDK for Java 3.16.0 y versiones posteriores son compatibles con el elemento NOT.
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
import java.util.ArrayList;
import java.util.List;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
String ruleId = "mtime transition1";
String matchPrefix = "logs";
SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);
LifecycleFilter filter = new LifecycleFilter();
LifecycleNot not = new LifecycleNot();
Tag tag = new Tag("key1","value1");
not.setPrefix("logs/not-prefix");
not.setTag(tag);
List<LifecycleNot> notList = new ArrayList<LifecycleNot>();
notList.add(not);
filter.setNotList(notList);
List<LifecycleRule.StorageTransition> storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setStorageClass(StorageClass.IA);
storageTransition.setExpirationDays(30);
storageTransitions.add(storageTransition);
LifecycleRule rule = new LifecycleRule(ruleId, matchPrefix, LifecycleRule.RuleStatus.Enabled);
rule.setFilter(filter);
rule.setStorageTransition(storageTransitions);
request.AddLifecycleRule(rule);
VoidResult result = ossClient.setBucketLifecycle(request);
System.out.println("Returned status code:"+result.getResponse().getStatusCode()+" set lifecycle succeed");
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}Configurar una regla de ciclo de vida basada en la última fecha de acceso para cambiar la clase de almacenamiento de los objetos
El siguiente ejemplo de código muestra cómo configurar una regla de ciclo de vida basada en la última fecha de acceso para cambiar la clase de almacenamiento de los objetos del bucket examplebucket:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
import java.util.ArrayList;
import java.util.List;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
ossClient.putBucketAccessMonitor(bucketName, AccessMonitor.AccessMonitorStatus.Enabled.toString());
// Create a lifecycle rule and set the ID to rule1. Specify that the storage classes of objects whose names contain the logs prefix and whose size is less than or equal to 64 KB are changed to IA 30 days after the objects are last accessed. In addition, specify that the objects whose name contain the logs prefix are still stored as IA objects when the objects are accessed again.
LifecycleRule lifecycleRule = new LifecycleRule("rule1", "logs", LifecycleRule.RuleStatus.Enabled);
List<LifecycleRule> lifecycleRuleList = new ArrayList<LifecycleRule>();
SetBucketLifecycleRequest setBucketLifecycleRequest = new SetBucketLifecycleRequest(bucketName);
LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
storageTransition.setStorageClass(StorageClass.IA);
storageTransition.setExpirationDays(30);
storageTransition.setIsAccessTime(true);
storageTransition.setReturnToStdWhenVisit(false);
storageTransition.setAllowSmallFile(true);
List<LifecycleRule.StorageTransition> storageTransitionList = new ArrayList<LifecycleRule.StorageTransition>();
storageTransitionList.add(storageTransition);
lifecycleRule.setStorageTransition(storageTransitionList);
lifecycleRuleList.add(lifecycleRule);
// Create a lifecycle rule and set the ID to rule2. Specify that the previous versions of the objects whose names contain the dir prefix and whose size is greater than 64 KB are changed to IA 10 days after the objects are last accessed. In addition, specify that the storage classes of the objects whose names contain the dir prefix are changed to Standard when the objects are accessed again.
LifecycleRule lifecycleRule2 = new LifecycleRule("rule2", "dir", LifecycleRule.RuleStatus.Enabled);
LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition = new LifecycleRule.NoncurrentVersionStorageTransition();
noncurrentVersionStorageTransition.setStorageClass(StorageClass.IA);
noncurrentVersionStorageTransition.setNoncurrentDays(10);
noncurrentVersionStorageTransition.setIsAccessTime(true);
noncurrentVersionStorageTransition.setReturnToStdWhenVisit(true);
noncurrentVersionStorageTransition.setAllowSmallFile(false);
List<LifecycleRule.NoncurrentVersionStorageTransition> noncurrentVersionStorageTransitionList = new ArrayList<LifecycleRule.NoncurrentVersionStorageTransition>();
noncurrentVersionStorageTransitionList.add(noncurrentVersionStorageTransition);
lifecycleRule2.setNoncurrentVersionStorageTransitions(noncurrentVersionStorageTransitionList);
lifecycleRuleList.add(lifecycleRule2);
setBucketLifecycleRequest.setLifecycleRules(lifecycleRuleList);
// Configure the lifecycle rules.
ossClient.setBucketLifecycle(setBucketLifecycleRequest);
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}Consultar reglas de ciclo de vida
El siguiente ejemplo de código muestra cómo consultar las reglas de ciclo de vida configuradas para el bucket llamado examplebucket:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.LifecycleRule;
import java.util.List;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// Query the lifecycle rules of the bucket.
List<LifecycleRule> rules = ossClient.getBucketLifecycle(bucketName);
// Query the lifecycle rules that are configured for the bucket.
for (LifecycleRule r : rules) {
System.out.println("================");
// View the rule ID.
System.out.println("rule id: " + r.getId());
// View the status of the rule.
System.out.println("rule status: " + r.getStatus());
// View the prefix configured in the lifecycle rule.
System.out.println("rule prefix: " + r.getPrefix());
// View the tag configured in the lifecycle rule.
if (r.hasTags()) {
System.out.println("rule tagging: "+ r.getTags().toString());
}
// View the validity period configured in the lifecycle rule.
if (r.hasExpirationDays()) {
System.out.println("rule expiration days: " + r.getExpirationDays());
}
// View the expiration date configured in the lifecycle rule.
if (r.hasCreatedBeforeDate()) {
System.out.println("rule expiration create before days: " + r.getCreatedBeforeDate());
}
// View the rule for expired parts.
if(r.hasAbortMultipartUpload()) {
if(r.getAbortMultipartUpload().hasExpirationDays()) {
System.out.println("rule abort uppart days: " + r.getAbortMultipartUpload().getExpirationDays());
}
if (r.getAbortMultipartUpload().hasCreatedBeforeDate()) {
System.out.println("rule abort uppart create before date: " + r.getAbortMultipartUpload().getCreatedBeforeDate());
}
}
// View the rule of storage class change.
if (r.getStorageTransition().size() > 0) {
for (LifecycleRule.StorageTransition transition : r.getStorageTransition()) {
if (transition.hasExpirationDays()) {
System.out.println("rule storage trans days: " + transition.getExpirationDays() +
" trans storage class: " + transition.getStorageClass());
}
if (transition.hasCreatedBeforeDate()) {
System.out.println("rule storage trans before create date: " + transition.getCreatedBeforeDate());
}
// Check whether lifecycle rules are configured based on the last access time. This configuration applies only to OSS SDK for Java 3.16.0 and later.
System.out.println("StorageTransition IsAccessTime: "+transition.getIsAccessTime());
// View the lifecycle rule to check whether the storage class of the object is changed to Standard when the object is accessed again after the storage class of the object is changed to IA. This configuration applies only to OSS SDK for Java 3.16.0 and later.
System.out.println("StorageTransition ReturnToStdWhenVisit: "+transition.getReturnToStdWhenVisit());
}
}
// View the lifecycle rule to check whether expired delete markers are automatically deleted.
if (r.hasExpiredDeleteMarker()) {
System.out.println("rule expired delete marker: " + r.getExpiredDeleteMarker());
}
// View the configurations used to change the storage classes of previous versions of the objects.
if (r.hasNoncurrentVersionStorageTransitions()) {
for (LifecycleRule.NoncurrentVersionStorageTransition transition : r.getNoncurrentVersionStorageTransitions()) {
System.out.println("rule noncurrent versions trans days:" + transition.getNoncurrentDays() +
" trans storage class: " + transition.getStorageClass());
// View the access time of objects. This configuration applies only to OSS SDK for Java 3.16.0 and later.
System.out.println("NoncurrentVersionStorageTransition IsAccessTime: "+transition.getIsAccessTime());
// View the ReturnToStdWhenVisit. This configuration applies only to OSS SDK for Java 3.16.0 and later.
System.out.println("NoncurrentVersionStorageTransition ReturnToStdWhenVisit: "+transition.getReturnToStdWhenVisit());
}
}
// View the expiration rule for previous versions of objects.
if (r.hasNoncurrentVersionExpiration()) {
System.out.println("rule noncurrent versions expiration days:" + r.getNoncurrentVersionExpiration().getNoncurrentDays());
}
}
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}Borrar reglas de ciclo de vida
El siguiente ejemplo de código muestra cómo borrar las reglas de ciclo de vida de un bucket llamado examplebucket. Si desea eliminar una o más reglas de ciclo de vida, consulte Delete lifecycle rules.
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
ossClient.deleteBucketLifecycle(bucketName);
} catch (OSSException oe) {
System.out.println("Caught an OSSException, which means your request made it to OSS, "
+ "but was rejected with an error response for some reason.");
System.out.println("Error Message:" + oe.getErrorMessage());
System.out.println("Error Code:" + oe.getErrorCode());
System.out.println("Request ID:" + oe.getRequestId());
System.out.println("Host ID:" + oe.getHostId());
} catch (ClientException ce) {
System.out.println("Caught an ClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with OSS, "
+ "such as not being able to access the network.");
System.out.println("Error Message:" + ce.getMessage());
} finally {
if (ossClient != null) {
ossClient.shutdown();
}
}
}
}Referencias
Para consultar el código de ejemplo completo sobre reglas de ciclo de vida, visite GitHub.
Para obtener más información sobre la operación de API que permite configurar una regla de ciclo de vida, consulte PutBucketLifecycle.
Para obtener más información sobre la operación de API que permite consultar reglas de ciclo de vida, consulte GetBucketLifecycle.
Para obtener más información sobre la operación de API que permite eliminar reglas de ciclo de vida, consulte DeleteBucketLifecycle.