(DataFlex) S3 Upload String using AWS Signature Version 2

Example to upload the contents of a string to the Amazon S3 service, using the older AWS Signature Version 2.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoRest
    Boolean iBTls
    Integer iPort
    Boolean iBAutoReconnect
    Boolean iSuccess
    Variant vAuthAws
    Handle hoAuthAws
    Handle hoFac
    String sFileContents
    String sResponseBodyStr
    Integer iStatusCode
    String sTemp1
    Boolean bTemp1

    // Demonstrates how to use older AWS S3 Signature Version 2 for uploading the contents
    // of a string variable to an object in a bucket.

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

    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
    // The file is uploaded to the bucket named "chilkat100", which becomes part of the domain:
    Get ComConnect Of hoRest "chilkat100.s3.amazonaws.com" iPort iBTls iBAutoReconnect To iSuccess

    // ----------------------------------------------------------------------------
    // Important: For buckets created in regions outside us-east-1,
    // there are three important changes that need to be made.
    // See Working with S3 Buckets in Non-us-east-1 Regions for the details.
    // ----------------------------------------------------------------------------

    // 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"

    // For AWS Signature Version 2, the following two properties need to be set:
    Set ComSignatureVersion Of hoAuthAws To 2
    // See http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#ConstructingTheCanonicalizedResourceElement
    // The bucket is "chilkat100", and the uriPath is "/hamlet_play.xml", which must match
    // the URI path passed to the FullRequestString method below.
    Set ComCanonicalizedResourceV2 Of hoAuthAws To "/chilkat100/hamlet_play.xml"

    Get pvComObject of hoAuthAws to vAuthAws
    Get ComSetAuthAws Of hoRest vAuthAws To iSuccess

    // Load a text file into memory.
    Get Create (RefClass(cComCkFileAccess)) To hoFac
    If (Not(IsComObjectCreated(hoFac))) Begin
        Send CreateComObject of hoFac
    End
    Get ComReadEntireTextFile Of hoFac "qa_data/xml/hamlet.xml" "utf-8" To sFileContents
    Get ComLastMethodSuccess Of hoFac To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoFac To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // To send the file in gzip or deflate compressed format, set the Content-Encoding request
    // header to "gzip" or "deflate".  (this is optional)
    Get ComAddHeader Of hoRest "Content-Encoding" "gzip" To iSuccess

    // Indicate the Content-Type of our upload.  (This is optional)
    Get ComAddHeader Of hoRest "Content-Type" "text/xml" To iSuccess

    // We can add an "Expect: 100-continue" header so that if the request is rejected
    // by the server immediately after receiving the request header, it can respond
    // and the client (Chilkat) can avoid sending the file data.
    // (this is optional)
    Get ComAddHeader Of hoRest "Expect" "100-continue" To iSuccess

    // Upload the file to Amazon S3.
    Get ComFullRequestString Of hoRest "PUT" "/hamlet_play.xml" sFileContents To sResponseBodyStr
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 <> 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
        Showln "Error response: " sResponseBodyStr
        Get ComResponseStatusText Of hoRest To sTemp1
        Showln "Status code: " iStatusCode ", Status text: " sTemp1
        Procedure_Return
    End

    Showln "File successfully uploaded."


End_Procedure