(Go) Create S3 Pre-Signed URL for Upload

Demonstrates how to generate a pre-signed URL for S3 uploads.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Note: This example requires Chilkat v9.5.0.83 or greater.

    http := chilkat.NewHttp()

    http.SetAwsAccessKey("AWS_ACCESS_KEY")
    http.SetAwsSecretKey("AWS_SECRET_KEY")

    // Make sure to set your AWS region correctly
    http.SetAwsRegion("us-east-1")

    bucketName := "chilkat200"
    objectName := "starfish/starfish.jpg"
    awsService := "s3"
    httpVerb := "PUT"

    // The signed URL will be valid for this number of seconds:
    numSecondsValid := 86400

    // Choose between a URL beginning with "http://" or "https://"...
    bUseHttps := false

    // Generate the pre-signed URL
    preSignedUrl := http.S3_GenPresignedUrl(httpVerb,bUseHttps,bucketName,objectName,numSecondsValid,awsService)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        return
    }

    fmt.Println("Presigned URL for Upload: ", *preSignedUrl)

    // Here's an example of a pre-signed URL
    // 
    // http://chilkat200.s3.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIBJLOVZVXAU2AFUA%2F20200623%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200623T234049Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=xxxxxeaea071178d772856c0a4e4c0114a8d9992f0d0812955e490d0exxxxxxx
    // 

    // You can use the pre-signed URL to upload from Chilkat
    // For example, upload by streaming from a local file
    resp := http.PFile("PUT",*preSignedUrl,"qa_data/jpg/starfish.jpg","image/jpg",false,false)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        return
    }

    fmt.Println("response status code = ", resp.StatusCode())
    fmt.Println("response body size: ", resp.ContentLength())
    if resp.ContentLength() > 0 {
        fmt.Println("response body:")
        fmt.Println(resp.BodyStr())
    }

    resp.DisposeHttpResponse()

    http.DisposeHttp()