Help & Documentation
Cloud Object Storage
Developer Guide
Data Management
Lifecycle Management
Configuring Lifecycle
Use Cases
With lifecycle configuration, the predefined action can be automatically performed when a rule applies to objects. For example:
- Transition: Transition objects to STANDARD_IA storage or ARCHIVE storage after a specified time of period.
- Expiration: Automatically delete objects after they reach the specified expiration time.
For more information, see Instructions on lifecycle. You need to specify configuration elements during lifecycle configuration.
Directions
Via the COS Console
For more information on lifecycle configuration on the COS Console, see Lifecycle Management in Console Guide.
Via REST API
You can configure and manage the lifecycle of objects in a bucket using the REST API, as described in the following API documentation:
Via C++ SDK
This method is provided in the C++ SDK for COS. See Put Bucket Lifecycle in C++ SDK API Documentation.
Steps:
- Initialize client cosClient.
- Execute putBucketLifecycle and GetBucketLifecycle to configure and retrieve the bucket lifecycle.
Configure the lifecycle
Sample code:
cloud_cos::CosConfig config("./config.json");
qcloud_cos::CosAPI cos(config);
std::string bucket_name = "cpp_sdk_v5-12345";
// The bucket_name is required in the constructor of PutBucketLifecycleReq.
qcloud_cos::PutBucketLifecycleReq req(bucket_name);
qcloud_cos::PutBucketLifecycleResp resp;
// Set rules
{
qcloud_cos::LifecycleRule rule;
rule.SetIsEnable(true);
rule.SetId("lifecycle_rule00");
// Set filters. Here filter out objects with the tag key of "datalevel" and tag value of "backup" so that the rule applies only to these objects.
qcloud_cos::LifecycleFilter filter;
Lifecycle tag;
tag.key = "datalevel";
tag.value = "backup";
filter.AddTag(tag);
rule.SetFilter(filter);
// Transition objects to STANDARD_IA 30 days after creation.
qcloud_cos::LifecycleTransition transition1;
transition1.SetDays(30);
transition1.SetStorageClass("STANDARD_IA");
rule.AddTransition(transition1);
// Transition objects to ARCHIVE 365 days after creation.
qcloud_cos::LifecycleTransition transition2;
transition2.SetDays(365);
transition2.SetStorageClass("ARCHIVE");
rule.AddTransition(transition2);
req.AddRule(rule);
}
qcloud_cos::CosResult result = cos.PutBucketLifecycle(req, &resp);
// If the call is successful, call resp's member functions to get the response content.
if (result.IsSucc()) {
// ...
} else {
// If the lifecycle configuration fails, call CosResult's member functions to output error information, such as requestID.
}Retrieve the lifecycle
Sample code:
qcloud_cos::CosConfig config("./config.json");
qcloud_cos::CosAPI cos(config);
std::string bucket_name = "cpp_sdk_v5-12345";
// The bucket_name is required in the constructor of GetBucketLifecycleReq.
qcloud_cos::GetBucketLifecycleReq req(bucket_name);
qcloud_cos::GetBucketLifecycleResp resp;
qcloud_cos::CosResult result = cos.GetBucketLifecycle(req, &resp);
// If the call is successful, call resp's member functions to get the response content.
if (result.IsSucc()) {
// ...
} else {
// If fail to obtain the lifecycle configuration, call CosResult's member functions to output error information, such as requestID.
}Via Python SDK
This method is provided in the Python SDK for COS. See Configure Bucket Lifecycle in Python SDK API Documentation.
Configure the lifecycle
Steps:
- Use the CosConfig library for configuration, and initialize client CosS3Client.
- Execute put_bucket_lifecycle() to configure the bucket lifecycle.
The sample code is as follows:
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
secret_id = 'xxxxxxxx' # Replaced with user's secretId
secret_key = 'xxxxxxx' # Replaced with user's secretKey
region = 'ap-beijing-1' # Replaced with user's Region
token = '' # Token is required to use a temporary key. It is optional. Default is empty.
config = CosConfig(Access_id=secret_id, Access_key=secret_key, Region=region, Token=token)
client = CosS3Client(config)
bucket = 'testbucket-123456789'
lifecycle_config = {
'Rule': [
{
'Status': 'Enabled',
'Filter': {
# Apply to objects with the tag key of "datalevel" and tag value of "backup"
'Tag': [
{
'Key': 'datalevel',
'Value': 'backup'
}
]
},
'Transition': [
{
# Transition to Standard_IA 30 days after creation
'Days': 30,
'StorageClass': 'Standard_IA'
},
{
# Transition to Archive 365 days after creation
'Days': 365,
'StorageClass': 'Archive'
}
],
'Expiration': {
# Delete after the expiration period of 3650 days is reached
'Days': 3650
}
}
]
}
response = client.put_bucket_lifecycle(
Bucket=bucket,
LifecycleConfiguration=lifecycle_config
)Obtain the lifecycle
Steps:
- Use the CosConfig class for configuration, and initialize CosS3Client.
- Execute get_bucket_lifecycle() to obtain the bucket lifecycle.
The following code is used to obtain lifecycle configuration:
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
secret_id = 'xxxxxxxx' # Replaced with user's secretId
secret_key = 'xxxxxxx' # Replaced with user's secretKey
region = 'ap-beijing-1' # Replaced with user's Region
token = '' # Token is required to use a temporary key. It is optional. Default is empty.
config = CosConfig(Access_id=secret_id, Access_key=secret_key, Region=region, Token=token)
client = CosS3Client(config)
bucket = 'testbucket-123456789'
response = client.get_bucket_lifecycle(
Bucket=bucket
)Via PHP SDK
This method is provided in the PHP SDK for COS. See Put Bucket Lifecycle in PHP SDK API Documentation.
Configure the lifecycle
Steps:
- Initialize client cosClient.
- Execute putBucketLifecycle to configure the bucket lifecycle.
The following code shows how to configure the bucket lifecycle:
## putBucketLifecycle (Configure bucket lifecycle)
$cosClient = new Qcloud\Cos\Client(array('region' => getenv('COS_REGION'),
'credentials'=> array(
'secretId' => getenv('COS_KEY'),
'secretKey' => getenv('COS_SECRET'))));
//The bucket name entered must be in a format of {name}-{appid}
$bucket = 'lewzylu02-1252448703';
try {
$result = $cosClient->putBucketLifecycle(array(
'Bucket' => $bucket,
'Rules' => array(
array(
'Status' => 'Enabled',
'Filter' => array(
'Tag' => array(
'Key' => 'datalevel',
'Value' => 'backup'
)
),
'Transitions' => array(
array(
# Transition to Standard_IA 30 days after creation
'Days' => 30,
'StorageClass' => 'Standard_IA'),
array(
# Transition to Archive 365 days after creation
'Days' => 365,
'StorageClass' => 'Archive')
),
'Expiration' => array(
# Delete after the expiration period of 3650 days is reached
'Days' => 3650,
)
)
)
));
print_r($result);
} catch (\Exception $e) {
echo "$e\n";
}Obtain the lifecycle
Steps:
- Initialize client cosClient.
- Execute getBucketLifecycle to obtain the bucket lifecycle.
The following code shows how to obtain the bucket lifecycle:
## getBucketLifecycle (Obtain bucket lifecycle)
$cosClient = new Qcloud\Cos\Client(array('region' => getenv('COS_REGION'),
'credentials'=> array(
'secretId' => getenv('COS_KEY'),
'secretKey' => getenv('COS_SECRET'))));
//The bucket name entered must be in a format of {name}-{appid}
$bucket = 'lewzylu02-1252448703';
try {
$result = $cosClient->getBucketLifecycle(array(
'Bucket' =>$bucket,
));
print_r($result);
} catch (\Exception $e) {
echo "$e\n";
}Delete the lifecycle
Steps:
- Initialize client cosClient.
- Execute deleteBucketLifecycle to delete the bucket lifecycle.
The following code shows how to delete the bucket lifecycle:
## deleteBucketLifecycle (Delete bucket lifecycle)
$cosClient = new Qcloud\Cos\Client(array('region' => getenv('COS_REGION'),
'credentials'=> array(
'secretId' => getenv('COS_KEY'),
'secretKey' => getenv('COS_SECRET'))));
//The bucket name entered must be in a format of {name}-{appid}
$bucket = 'lewzylu02-1252448703';
try {
$result = $cosClient->deleteBucketLifecycle(array(
'Bucket' =>$bucket,
));
print_r($result);
} catch (\Exception $e) {
echo "$e\n";
}