Question

我尝试使用以下代码连接到IBM Cloud对象存储（Cleversafe），我收到以下错误

＆＃34;错误回复：MissingRegion：找不到区域配置＆＃34;

package main

import (
    "fmt"
    "os"
    "bytes"
    "net/http"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/awsutil"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/service/s3"
    "github.com/aws/aws-sdk-go/aws/session"
)

func main() {

    fmt.Printf("Starting ...")

    aws_access_key_id := "some id"
    aws_secret_access_key := "some key"
    token := ""
    creds := credentials.NewStaticCredentials(aws_access_key_id, aws_secret_access_key, token)

    fmt.Printf("creds: ", creds)

    _, err := creds.Get()
    if err != nil {
        fmt.Printf("bad credentials: %s", err)
    }
    //EndpointResolver endpoints.Resolver
    cfg := aws.NewConfig().WithEndpoint("dal.ibmselect.objstor.com").WithCredentials(creds)

    fmt.Printf("cfg: %+v \n", cfg)

    //cfg := aws.NewConfig().WithEndpointResolver()
    //cfg := aws.NewConfig().WithCredentials(creds)

    svc := s3.New(session.New(), cfg)

    fmt.Printf("svc: %+v \n", svc)

    file, err := os.Open("./test.jpg")
    if err != nil {
        fmt.Printf("err opening file: %s", err)
    }
    defer file.Close()
    fileInfo, _ := file.Stat()
    size := fileInfo.Size()
    buffer := make([]byte, size) // read file content to buffer

    file.Read(buffer)
    fileBytes := bytes.NewReader(buffer)
    fileType := http.DetectContentType(buffer)
    path := file.Name()
    params := &s3.PutObjectInput{
        Bucket:        aws.String("cosv1-jlnab"),
        Key:           aws.String(path),
        Body:          fileBytes,
        ContentLength: aws.Int64(size),
        ContentType:   aws.String(fileType),
    }
    resp, err := svc.PutObject(params)
    if err != nil {
        fmt.Printf("bad response: %s \n", err)
    }
    fmt.Printf("response %s", awsutil.StringValue(resp))
}

Answer 1

感谢
以下是一个工作示例代码：

package main

import (
    "fmt"
    "os"
    "bytes"
    "net/http"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/awsutil"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/service/s3"
    "github.com/aws/aws-sdk-go/aws/session"
)



func main() {

    fmt.Printf("Starting ...")

    aws_access_key_id := "Access key from Bluemix credentials"
    aws_secret_access_key := "Secret key from Bluemix credentials"
    token := ""
    creds := credentials.NewStaticCredentials(aws_access_key_id, aws_secret_access_key, token)

    fmt.Printf("creds: ", creds)

    _, err := creds.Get()
    if err != nil {
        fmt.Printf("bad credentials: %s", err)
    }
    //EndpointResolver endpoints.Resolver
    cfg := aws.NewConfig().WithRegion("cleversafe").WithEndpoint("s3-api.us-geo.objectstorage.softlayer.net").WithCredentials(creds)

    fmt.Printf("cfg: %+v \n", cfg)

    svc := s3.New(session.New(), cfg)

    fmt.Printf("svc: %+v \n", svc)

    file, err := os.Open("./test.jpg")
    if err != nil {
        fmt.Printf("err opening file: %s", err)
    }
    defer file.Close()
    fileInfo, _ := file.Stat()
    size := fileInfo.Size()
    buffer := make([]byte, size) // read file content to buffer

    file.Read(buffer)
    fileBytes := bytes.NewReader(buffer)
    fileType := http.DetectContentType(buffer)
    path := file.Name()
    params := &s3.PutObjectInput{
        Bucket:        aws.String("test-ophir"),
        Key:           aws.String(path),
        Body:          fileBytes,
        ContentLength: aws.Int64(size),
        ContentType:   aws.String(fileType),
    }
    resp, err := svc.PutObject(params)
    if err != nil {
        fmt.Printf("bad response: %s \n", err)
    }
    fmt.Printf("response %s", awsutil.StringValue(resp))
}

Answer 2

基本上这是因为IBM COS和AWS S3处理“区域”的概念有所不同。抛出此错误是因为AWS Go SDK不知道为用于计算授权标头的“region”变量提供什么值。在这种情况下，IBM COS并不关心什么值，只要它不是null。最简单的方法是通过命令行提供环境变量：export AWS_REGION=foo其中foo可以是任何字符串，尽管它也可以在应用程序中创建客户端时设置为配置变量。

我建议使用有意义的东西，例如us或us-south，因为IBM COS可能会在某个时候通过将“region”的概念链接到AWS来强制执行此操作。 {1}}变量，IBM COS当前使用该变量来定义存储区的存储类，尽管这种区别将在未来的某个时刻显示出来。

如何使用AWS S3 sdk从Golang连接到IBM Cloud对象存储（Cleversafe）

2 个答案: