Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceGoIntroduction to Typical ScenesMulti-Version Scenarios (Go SDK)
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Multi-Version Scenarios (Go SDK)
Copy pageDownload PDFMulti-Version Scenarios (Go SDK)
<SOURCE_TEXT>Versioning is applied to all objects within the bucket.</SOURCE_TEXT> By enabling bucket versioning, you can restore an object to any previous version after accidental deletion or overwriting.
Currently, the interfaces that support multiple versions include GetObject, GetObjectACL, CopyObject, UploadPartCopy, DeleteObject, etc. When calling the relevant interfaces, you can specify the exact version of the target object by using the optional parameter VersionID.
Bucket Versioning Management
In TOS, bucket versioning status includes three types: versioning not enabled, versioning enabled, and versioning suspended. This article introduces multi-version management for buckets.
warning
- Before configuring the bucket versioning status, you must have the tos:PutBucketVersioning permission.
- Before querying the multi-version status of a bucket, you must have the tos:GetBucketVersioning permission.
Configure Bucket Versioning Status
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos/enum"
"os"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else if clientErr, ok := err.(*tos.TosClientError); ok {
fmt.Println("Error:", clientErr.Error())
fmt.Println("Client Cause Err:", clientErr.Cause.Error())
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
output, err := client.PutBucketVersioning(ctx, &tos.PutBucketVersioningInput{
Bucket: bucketName,
Status: enum.VersioningStatusEnable,
})
fmt.Println("PutBucketVersioning Request ID:", output.RequestID)
output, err = client.PutBucketVersioning(ctx, &tos.PutBucketVersioningInput{
Bucket: bucketName,
Status: enum.VersioningStatusSuspended,
})
fmt.Println("PutBucketVersioning Request ID:", output.RequestID)
}
Download Multi-Version Objects
package main
import (
"context"
"fmt"
"io/ioutil"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else if clientErr, ok := err.(*tos.TosClientError); ok {
fmt.Println("Error:", clientErr.Error())
fmt.Println("Client Cause Err:", clientErr.Cause.Error())
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
objectKey = "example_dir/example.txt"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
versionID := "your object version id"
getOutput, err := client.GetObjectV2(ctx, &tos.GetObjectV2Input{
Bucket: bucketName,
Key: objectKey,
VersionID: versionID,
})
checkErr(err)
fmt.Println("GetObjectV2 Request ID:", getOutput.RequestID)
fmt.Println("GetObjectV2 Response ContentLength", getOutput.ContentLength)
defer getOutput.Content.Close()
body, err := ioutil.ReadAll(getOutput.Content)
checkErr(err)
fmt.Println("Get Object Content:", body)
}
Deleting Multi-Version Objects
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else if clientErr, ok := err.(*tos.TosClientError); ok {
fmt.Println("Error:", clientErr.Error())
fmt.Println("Client Cause Err:", clientErr.Cause.Error())
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
objectKey = "example_dir/example.txt"
ctx = context.Background()
versionID = "*** Provide object Version ID"
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
output, err := client.DeleteObjectV2(ctx, &tos.DeleteObjectV2Input{
Bucket: bucketName,
Key: objectKey,
VersionID: versionID,
})
checkErr(err)
fmt.Println("DeleteObjectV2 Request ID:", output.RequestID)
}
Emptying a versioning-enabled bucket
The following code is used for clearing an entire bucket with multi-versioning enabled, including deleting all versions of objects, deleting all versions of delete markers, and deleting all unmerged objects.
package main
import (
"context"
"fmt"
"os"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else if clientErr, ok := err.(*tos.TosClientError); ok {
fmt.Println("Error:", clientErr.Error())
fmt.Println("Client Cause Err:", clientErr.Cause.Error())
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
truncated := true
marker := ""
versionIdMarker := ""
for truncated {
listOutput, err := client.ListObjectVersionsV2(ctx, &tos.ListObjectVersionsV2Input{
Bucket: bucketName,
ListObjectVersionsInput: tos.ListObjectVersionsInput{
MaxKeys: 1000,
KeyMarker: marker,
VersionIDMarker: versionIdMarker,
},
})
checkErr(err)
for _, obj := range listOutput.Versions {
output, err := client.DeleteObjectV2(ctx, &tos.DeleteObjectV2Input{
Bucket: bucketName,
Key: obj.Key,
VersionID: obj.VersionID,
})
checkErr(err)
fmt.Printf("Delete %s, Request ID: %s\n", obj.Key, output.RequestID)
}
for _, deleteMarker := range listOutput.DeleteMarkers {
output, err := client.DeleteObjectV2(ctx, &tos.DeleteObjectV2Input{
Bucket: bucketName,
Key: deleteMarker.Key,
VersionID: deleteMarker.VersionID,
})
checkErr(err)
fmt.Printf("Delete deleteMarker %s, Request ID: %s\n", deleteMarker.Key, output.RequestID)
}
truncated = listOutput.IsTruncated
marker = listOutput.NextKeyMarker
versionIdMarker = listOutput.NextVersionIDMarker
}
truncated = true
marker = ""
uploadIDMarker := ""
for truncated {
output, err := client.ListMultipartUploadsV2(ctx, &tos.ListMultipartUploadsV2Input{
Bucket: bucketName,
MaxUploads: 1000,
KeyMarker: marker,
UploadIDMarker: uploadIDMarker,
})
checkErr(err)
for _, upload := range output.Uploads {
abortUpload, err := client.AbortMultipartUpload(ctx, &tos.AbortMultipartUploadInput{
Bucket: bucketName,
Key: upload.Key,
UploadID: upload.UploadID,
})
checkErr(err)
fmt.Println("AbortMultipartUpload Upload ID:", upload.UploadID, " Request ID:", abortUpload.RequestID)
}
truncated = output.IsTruncated
marker = output.NextKeyMarker
uploadIDMarker = output.NextUploadIDMarker
}
}
Last updated: 2025.09.19 17:30:18
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