Torch Object Storage
Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceC++Bucket InterfaceManage Bucket ConfigurationManaging Bucket Lifecycle (C++ SDK)
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Managing Bucket Lifecycle (C++ SDK)
Copy pageDownload PDFManaging Bucket Lifecycle (C++ SDK)
TOS supports configuring lifecycle rules for buckets (Lifecycle), enabling automatic conversion of object storage types and automatic deletion of expired objects. This facilitates efficient utilization of storage features and optimizes storage space. You can use the lifecycle management feature of object storage through the SDK to delete expired objects, thereby reducing storage costs. When configuring lifecycle rules, you can specify an object prefix or object tag for which the rule will take effect. If you specify two activation conditions simultaneously, the object must satisfy all configured conditions for the lifecycle rule to be applied.
Configure lifecycle rules
warning
- To configure lifecycle rules for a bucket, you must have the tos:PutLifecycleConfiguration permission. For detailed instructions, refer to the Permissions configuration guide.
- If lifecycle rules have already been configured for the bucket, performing this operation will overwrite the existing configuration. To append lifecycle rules, first use GetLifecycleConfiguration to retrieve the current rules, then add the new rules, and finally call PutLifecycleConfiguration to update the rules.
Sample code
The following code is used to configure the lifecycle rules for the bucket examplebucket.
#include "TosClientV2.h"
using namespace VolcengineTos;
int main(void){
std::string region = "Your Region";
std::string accessKey = std::getenv("TOS_ACCESS_KEY");
std::string secretKey = std::getenv("TOS_SECRET_KEY");
std::string bucketName = "examplebucket";
InitializeClient();
TosClientV2 client(region, accessKey, secretKey);
PutBucketLifecycleInput input(bucketName);
auto rule1 = LifecycleRule();
rule1.setId("rule1");
rule1.setPrefix("test1/");
rule1.setStatus(StatusType::StatusEnabled);
rule1.setExpiratioon(std::make_shared<Expiration>(60));
rule1.addTag(Tag("key1", "value1"));
rule1.addTag(Tag("key2", "value2"));
auto rule2 = LifecycleRule();
rule2.setId("rule2");
rule2.setPrefix("test2/");
rule2.setStatus(StatusType::StatusDisabled);
time_t expirationTime = time(nullptr);
tm* gmtmExpiration = gmtime(&expirationTime);
gmtmExpiration->tm_min = 0;
gmtmExpiration->tm_hour = 0;
gmtmExpiration->tm_sec = 0;
gmtmExpiration->tm_year = gmtmExpiration->tm_year + 1;
auto exactTime = timegm(gmtmExpiration);
rule2.setExpiratioon(exactTime);
auto rule3 = LifecycleRule();
rule3.setId("rule3");
rule3.setPrefix("test3/");
rule3.setStatus(StatusType::StatusDisabled);
auto transition = Transition();
transition.setDays(365);
transition.setStorageClass(StorageClassType::ARCHIVE_FR);
rule3.addTransition(transition);
auto transition1 = NoncurrentVersionTransition(10, StorageClassType::IA);
auto transition2 = NoncurrentVersionTransition(20, StorageClassType::ARCHIVE_FR);
rule3.setNoncurrentVersionExpiration(30);
std::vector<NoncurrentVersionTransition> noncurrentVersionStorageTransitions{transition1, transition2};
rule3.setNoncurrentVersionTransitions(noncurrentVersionStorageTransitions);
std::vector<LifecycleRule> rules{rule1, rule2, rule3};
input.setRules(rules);
auto output = client.putBucketLifecycle(input);
if (!output.isSuccess()) {
std::cout << "PutBucketLifecycle failed." << output.error().String() << std::endl;
CloseClient();
return -1;
}
std::cout << "PutBucketLifecycle success." << std::endl;
CloseClient();
return 0;
}
Retrieve lifecycle rules
warning
- To retrieve lifecycle rules for a bucket, you must have the tos:GetLifecycleConfiguration permission. For specific instructions, please refer to the Permissions configuration guide.
- For more information on lifecycle rules, please refer to Bucket lifecycle rules.
Sample code
The following code is used to retrieve the lifecycle rules for the bucket examplebucket.
#include "TosClientV2.h"
using namespace VolcengineTos;
int main(void){
std::string region = "Your Region";
std::string accessKey = std::getenv("TOS_ACCESS_KEY");
std::string secretKey = std::getenv("TOS_SECRET_KEY");
std::string bucketName = "examplebucket";
InitializeClient();
TosClientV2 client(region, accessKey, secretKey);
GetBucketLifecycleInput input(bucketName);
auto output = client.getBucketLifecycle(input);
if (!output.isSuccess()) {
std::cout << "GetBucketLifecycle failed." << output.error().String() << std::endl;
CloseClient();
return -1;
}
auto lifycycleRules= output.result().getRules();
for (auto& rule : lifycycleRules){
std::cout << "rule:" << rule.getId() << "," << rule.getPrefix() << "," << rule.getStringFormatStatus() << ","
<< "hasExpiration:" << rule.hasExpiration() << "," << std::endl;
auto taglist = rule.getTags();
for (const auto& tag : taglist)
{
std::cout <<"GetBucketLifecycle tag success, Key:"
<< tag.getKey() << "; Value:" << tag.getValue() << std::endl;
}
for (auto const lifeCycleTransition : rule.getTransitions()) {
std::cout << "rule versions trans days:" << lifeCycleTransition.getDays() <<
" trans storage class: " << lifeCycleTransition.getStringFormatStorageClass() << std::endl;
}
for (auto const lifeCycleTransition : rule.getNoncurrentVersionTransitions()) {
std::cout << "rule noncurrent versions trans days:" << lifeCycleTransition.getNoncurrentDays() <<
" trans storage class: " << lifeCycleTransition.getStringFormatStorageClass() << std::endl;
}
if (rule.hasExpiration()) {
std::cout << "rule versions expiration days:" << rule.getExpiratioon()->getDays() << std::endl;
}
if (rule.hasNoncurrentVersionExpiration()) {
std::cout << "rule noncurrent versions expiration days:" << rule.getNoncurrentVersionExpiration()->getNoncurrentDays() << std::endl;
}
if (rule.hasAbortInCompleteMultipartUpload()) {
std::cout << "abort in completeMultipartUpload days:"
<< rule.getAbortInCompleteMultipartUpload()->getDaysAfterInitiation() <<std::endl;
}
}
CloseClient();
return 0;
}
Delete lifecycle rules
warning
- To delete lifecycle rules for a bucket, you must have the tos:PutLifecycleConfiguration permission. For detailed instructions, please refer to the Permissions configuration guide.
- For more information about lifecycle rules, see Bucket lifecycle rules.
Sample code
The following code is used to delete the lifecycle rule of the bucket examplebucket.
#include "TosClientV2.h"
using namespace VolcengineTos;
int main(void){
std::string region = "Your Region";
std::string accessKey = std::getenv("TOS_ACCESS_KEY");
std::string secretKey = std::getenv("TOS_SECRET_KEY");
std::string bucketName = "examplebucket";
InitializeClient();
TosClientV2 client(region, accessKey, secretKey);
DeleteBucketLifecycleInput input(bucketName);
auto output = client.deleteBucketLifecycle(input);
if (!output.isSuccess()) {
std::cout << "DeleteBucketLifecycle failed." << output.error().String() << std::endl;
CloseClient();
return -1;
}
std::cout << "DeleteBucketLifecycle success." << std::endl;
CloseClient();
return 0;
}
Relevant Documentation
Last updated: 2026.07.24 18:53:21
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