PowerBuilder

Create S3 Pre-Signed URL for Upload

See more Amazon S3 Examples

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

integer li_rc
integer li_Success
oleobject loo_Http
string ls_BucketName
string ls_ObjectName
string ls_AwsService
string ls_HttpVerb
integer li_NumSecondsValid
integer li_BUseHttps
string ls_PreSignedUrl
oleobject loo_Resp

li_Success = 0

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

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Http.AwsAccessKey = "AWS_ACCESS_KEY"
loo_Http.AwsSecretKey = "AWS_SECRET_KEY"

// Make sure to set your AWS region correctly
loo_Http.AwsRegion = "us-east-1"

ls_BucketName = "chilkat200"
ls_ObjectName = "starfish/starfish.jpg"
ls_AwsService = "s3"
ls_HttpVerb = "PUT"

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

// Choose between a URL beginning with "http://" or "https://"...
li_BUseHttps = 1

// Generate the pre-signed URL
ls_PreSignedUrl = loo_Http.S3_GenPresignedUrl(ls_HttpVerb,li_BUseHttps,ls_BucketName,ls_ObjectName,li_NumSecondsValid,ls_AwsService)
if loo_Http.LastMethodSuccess = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    return
end if

Write-Debug "Presigned URL for Upload: " + ls_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
loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpFile("PUT",ls_PreSignedUrl,"qa_data/jpg/starfish.jpg","image/jpg",loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Resp
    return
end if

Write-Debug "response status code = " + string(loo_Resp.StatusCode)
Write-Debug "response body size: " + string(loo_Resp.ContentLength)
if loo_Resp.ContentLength > 0 then
    Write-Debug "response body:"
    Write-Debug loo_Resp.BodyStr
end if



destroy loo_Http
destroy loo_Resp