DataFlex

S3 - Working with Buckets in a Region

See more Amazon S3 (new) Examples

Demonstrates how to work with S3 buckets located in a particular region. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoRest
    Boolean iBTls
    Integer iPort
    Boolean iBAutoReconnect
    Variant vAuthAws
    Handle hoAuthAws
    Variant vFileData
    Handle hoFileData
    Variant vResponseBody
    Handle hoResponseBody
    Integer iStatusCode
    String sTemp1

    Move False To iSuccess

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

    // When usig the REST class to access an S3 bucket that has been created in a particular region,
    // there are three important things to remember:
    // 
    // 1) Connect to the domain that includes the region.  For example, instead of connecting to
    //    "s3.amazonaws.com", connect to "s3.eu-central-1.amazonaws.com" if your bucket is in the EU Frankfurt region.
    //    See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region   for a list of S3 region domains (endpoints)
    // 
    // 2) Set the AuthAws.Region property equal to the region, such as "eu-central-1".
    // 
    // 3) Include the region in request's Host header.
    // 

    // This example will upload to a bucket in the eu-central-1 region.
    // 
    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    // Connect to the Amazon AWS REST server.
    Move True To iBTls
    Move 443 To iPort
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "s3.eu-central-1.amazonaws.com" iPort iBTls iBAutoReconnect To iSuccess

    // Provide AWS credentials for the REST call.
    Get Create (RefClass(cComChilkatAuthAws)) To hoAuthAws
    If (Not(IsComObjectCreated(hoAuthAws))) Begin
        Send CreateComObject of hoAuthAws
    End
    Set ComAccessKey Of hoAuthAws To "AWS_ACCESS_KEY"
    Set ComSecretKey Of hoAuthAws To "AWS_SECRET_KEY"
    Set ComServiceName Of hoAuthAws To "s3"
    Set ComRegion Of hoAuthAws To "eu-central-1"
    Get pvComObject of hoAuthAws to vAuthAws
    Get ComSetAuthAws Of hoRest vAuthAws To iSuccess

    // Set the bucket name via the HOST header.
    // In this case, the bucket name is "chilkateufrankfurt" (which was created in the eu-central-1 region)
    Set ComHost Of hoRest To "chilkateufrankfurt.s3.eu-central-1.amazonaws.com"

    Get Create (RefClass(cComChilkatBinData)) To hoFileData
    If (Not(IsComObjectCreated(hoFileData))) Begin
        Send CreateComObject of hoFileData
    End
    Get ComLoadFile Of hoFileData "qa_data/jpg/starfish.jpg" To iSuccess

    // Upload the file to Amazon S3.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoResponseBody
    If (Not(IsComObjectCreated(hoResponseBody))) Begin
        Send CreateComObject of hoResponseBody
    End
    Get pvComObject of hoFileData to vFileData
    Get pvComObject of hoResponseBody to vResponseBody
    Get ComFullRequestBd Of hoRest "PUT" "/starfish.jpg" vFileData vResponseBody To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Did we get a 200 response indicating success?
    Get ComResponseStatusCode Of hoRest To iStatusCode
    If (iStatusCode <> 200) Begin
        Get ComGetAsString Of hoResponseBody To sTemp1
        Showln "Error response: " sTemp1
        Get ComResponseStatusText Of hoRest To sTemp1
        Showln "Status code: " iStatusCode ", Status text: " sTemp1
        Procedure_Return
    End

    Showln "File successfully uploaded."


End_Procedure