Torch Object Storage
Torch Object Storage
Torch Object Storage
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The header contains a signature
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01-SERVICE_ERROR
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11-MIRROR
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- Documentation
Torch Object StorageSDK ReferenceGoBucket InterfaceBasic Bucket InterfaceRetrieving Bucket Information (Go SDK)
Copy page
Download PDFBasic Bucket Interface
Retrieving Bucket Information (Go SDK)
Copy pageDownload PDFRetrieving Bucket Information (Go SDK)
You can use HeadBucket to retrieve information about a storage bucket (Bucket). Additionally, by examining the HTTP Code in the returned err, you can determine whether the bucket exists. This document describes how to retrieve bucket metadata and determine whether a bucket exists.
Precautions
- Before retrieving bucket metadata, you must have the tos:HeadBucket permission. For detailed instructions, please refer to Permission Configuration Guide.
- If the bucket does not exist, this interface will return a 404 error code; this interface is also commonly used to verify whether a bucket exists.
Sample Code
Determine whether the bucket exists
package main
import (
"context"
"fmt"
"net/http"
"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 ***"
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
resp, err := client.HeadBucket(context.Background(), &tos.HeadBucketInput{Bucket: bucketName})
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
if serverErr.StatusCode == http.StatusNotFound {
fmt.Println("Bucket not found.")
} else {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
panic(err)
}
} else {
panic(err)
}
}
fmt.Println("Head Bucket Request ID: ", resp.RequestID)
fmt.Println("Head Bucket Response Status Code: ", resp.StatusCode)
}
Retrieve Bucket Metadata Information
package main
import (
"context"
"fmt"
"net/http"
"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 ***"
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
resp, err := client.HeadBucket(context.Background(), &tos.HeadBucketInput{Bucket: bucketName})
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
if serverErr.StatusCode == http.StatusNotFound {
fmt.Println("Bucket not found.")
} else {
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)
panic(err)
}
} else {
panic(err)
}
}
fmt.Println("Head Bucket Request ID: ", resp.RequestID)
fmt.Println("Head Bucket Response Status Code: ", resp.StatusCode)
fmt.Println("Bucket Region:", resp.Region)
fmt.Println("Bucket Storage Class:", resp.StorageClass)
View the bucket AZ type
fmt.Println("Bucket Az Redundancy:", resp.AzRedundancy)
}
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Last updated: 2025.09.19 17:30:19
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