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73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
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package main
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import (
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
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"encoding/base64"
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"fmt"
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"crypto/md5"
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"strings"
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"time"
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"net/http"
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)
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// Downloads an item from an S3 Bucket in the region configured in the shared config
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// or AWS_REGION environment variable.
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//
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// Usage:
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// go run presigned_put.go
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// For this exampl to work, the domainName is needd
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// weed s3 -domainName=localhost
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func main() {
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h := md5.New()
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content := strings.NewReader(stringContent)
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content.WriteTo(h)
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// Initialize a session in us-west-2 that the SDK will use to load
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// credentials from the shared credentials file ~/.aws/credentials.
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sess, err := session.NewSession(&aws.Config{
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Region: aws.String("us-east-1"),
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Endpoint: aws.String("http://localhost:8333"),
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})
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// Create S3 service client
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svc := s3.New(sess)
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putRequest, output := svc.PutObjectRequest(&s3.PutObjectInput{
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Bucket: aws.String("dev"),
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Key: aws.String("testKey"),
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})
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fmt.Printf("output: %+v\n", output)
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md5s := base64.StdEncoding.EncodeToString(h.Sum(nil))
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putRequest.HTTPRequest.Header.Set("Content-MD5", md5s)
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url, err := putRequest.Presign(15 * time.Minute)
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if err != nil {
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fmt.Println("error presigning request", err)
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return
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}
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fmt.Println(url)
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req, err := http.NewRequest("PUT", url, strings.NewReader(stringContent))
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req.Header.Set("Content-MD5", md5s)
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if err != nil {
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fmt.Println("error creating request", url)
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return
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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fmt.Printf("error put request: %v\n", err)
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return
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}
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fmt.Printf("response: %+v\n", resp)
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}
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var stringContent = `Generate a Pre-Signed URL for an Amazon S3 PUT Operation with a Specific Payload
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You can generate a pre-signed URL for a PUT operation that checks whether users upload the correct content. When the SDK pre-signs a request, it computes the checksum of the request body and generates an MD5 checksum that is included in the pre-signed URL. Users must upload the same content that produces the same MD5 checksum generated by the SDK; otherwise, the operation fails. This is not the Content-MD5, but the signature. To enforce Content-MD5, simply add the header to the request.
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The following example adds a Body field to generate a pre-signed PUT operation that requires a specific payload to be uploaded by users.
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`
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