You can use OSS to configure lifecycle rules to reduce storage costs. The lifecycle management rules can be used for automatic deletion of expired objects and fragments, or storage class conversion to Infrequent Access for objects that will expire soon. Each rule includes:

  • Rule ID: It identifies a rule. Ensure that each rule ID in a bucket is unique.
  • Policy: You can configure a policy by using the following configuration methods. Only one method can be configured for a bucket.
    • Configure by Prefix: You can create multiple rules with this method. Ensure that each prefix is unique.
    • Configure for Entire Bucket: You can configure only one rule with this method.
  • Expired: You can configure the following configuration methods:
    • Set by Number of Days: It specifies the number of days from the last modification time of objects.
    • Set by Date: It specifies the date prior to which objects are created. If objects are created prior to the date, these objects are deleted.
  • Status: This lifecyle rule takes effect or not.

For more information about lifecycle management, see Manage object lifecycle. For the complete code of lifecycle management, see GitHub.

Configure lifecycle rules

Run the following code to configure lifecycle rules:

<? php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;
use OSS\Model\LifecycleConfig;
use OSS\Model\LifecycleRule;
use OSS\Model\LifecycleAction;

// It is highly risky to log on with AccessKey of an Alibaba Cloud account because the account has permissions on all the APIs in OSS. We recommend that you log on as a RAM user to access APIs or perform routine operations and maintenance. To create a RAM account, log on to https://ram.console.aliyun.com.
$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// This example uses endpoint China (Hangzhou). Specify the actual endpoint based on your requirements.
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$bucket= "<yourBucketName>";

// Configure the rule ID and object name prefix.
$ruleId0 = "rule0";
$matchPrefix0 = "A0/";
$ruleId1 = "rule1";
$matchPrefix1 = "A1/";

$lifecycleConfig = new LifecycleConfig();
$actions = array();
// Set the expiration duration to 3 days after last modified date.
$actions[] = new LifecycleAction(OssClient::OSS_LIFECYCLE_EXPIRATION, OssClient::OSS_LIFECYCLE_TIMING_DAYS, 3);
$lifecycleRule = new LifecycleRule($ruleId0, $matchPrefix0, "Enabled", $actions);
$lifecycleConfig->addRule($lifecycleRule);
$actions = array();
// Configure expiration date to delete objects that are created before the date.
$actions[] = new LifecycleAction(OssClient::OSS_LIFECYCLE_EXPIRATION, OssClient::OSS_LIFECYCLE_TIMING_DATE, '2022-10-12T00:00:00.000Z');
$lifecycleRule = new LifecycleRule($ruleId1, $matchPrefix1, "Enabled", $actions);
$lifecycleConfig->addRule($lifecycleRule);
try {
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);

    $ossClient->putBucketLifecycle($bucket, $lifecycleConfig);
} catch (OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");

View lifecycle rules

Run the following code to view lifecycle rules:

<? php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// It is highly risky to log on with AccessKey of an Alibaba Cloud account because the account has permissions on all the APIs in OSS. We recommend that you log on as a RAM user to access APIs or perform routine operations and maintenance. To create a RAM account, log on to https://ram.console.aliyun.com.
$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// This example uses endpoint China (Hangzhou). Specify the actual endpoint based on your requirements.
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$bucket= "<yourBucketName>";

$lifecycleConfig = null;
try{
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);

    $lifecycleConfig = $ossClient->getBucketLifecycle($bucket);
} catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");
print($lifecycleConfig->serializeToXml() . "\n");

Clear lifecycle rules

Run the following code to clear lifecycle rules:

<? php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// It is highly risky to log on with AccessKey of an Alibaba Cloud account because the account has permissions on all the APIs in OSS. We recommend that you log on as a RAM user to access APIs or perform routine operations and maintenance. To create a RAM account, log on to https://ram.console.aliyun.com.
$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// This example uses endpoint China (Hangzhou). Specify the actual endpoint based on your requirements.
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$bucket= "<yourBucketName>";

try{
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);

    $ossClient->deleteBucketLifecycle($bucket);
} catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");