Chilkat Examples

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DataFlex Examples

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(DataFlex) S3 List Parts

This operation lists the parts that have been uploaded for a specific multipart upload.

This operation must include the upload ID, which you obtain by sending the initiate multipart upload request. This request returns a maximum of 1000 uploaded parts. The default number of parts returned is 1000 parts. You can restrict the number of parts returned by specifying the max-parts request parameter. If your multipart upload consists of more than 1000 parts, the response returns an IsTruncated field with the value of true, and a NextPartNumberMarker element. In subsequent List Parts requests you can include the part-number-marker query string parameter and set its value to the NextPartNumberMarker field value from the previous response.

This example sends GET request that looks like this:

GET /example-object?uploadId=XXBsb2FkIElEIGZvciBlbHZpbmcncyVcdS1tb3ZpZS5tMnRzEEEwbG9hZA&max-parts=100&part-number-marker=1 HTTP/1.1
Host: example-bucket.s3.amazonaws.com
Date: Mon, 1 Nov 2010 20:34:56 GMT
Authorization: authorization string

The following is a sample response:

HTTP/1.1 200 OK
x-amz-id-2: Uuag1LuByRx9e6j5Onimru9pO4ZVKnJ2Qz7/C1NPcfTWAtRPfTaOFg==
x-amz-request-id: 656c76696e6727732072657175657374
Date: Mon, 1 Nov 2010 20:34:56 GMT
Content-Length: 985
Connection: keep-alive
Server: AmazonS3

<?xml version="1.0" encoding="UTF-8"?>
<ListPartsResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Bucket>example-bucket</Bucket>
  <Key>example-object</Key>
  <UploadId>XXBsb2FkIElEIGZvciBlbHZpbmcncyVcdS1tb3ZpZS5tMnRzEEEwbG9hZA</UploadId>
  <Initiator>
      <ID>arn:aws:iam::111122223333:user/some-user-11116a31-17b5-4fb7-9df5-b288870f11xx</ID>
      <DisplayName>umat-user-11116a31-17b5-4fb7-9df5-b288870f11xx</DisplayName>
  </Initiator>
  <Owner>
    <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
    <DisplayName>someName</DisplayName>
  </Owner>
  <StorageClass>STANDARD</StorageClass>
  <PartNumberMarker>1</PartNumberMarker>
  <NextPartNumberMarker>3</NextPartNumberMarker>
  <MaxParts>2</MaxParts>
  <IsTruncated>true</IsTruncated>
  <Part>
    <PartNumber>2</PartNumber>
    <LastModified>2010-11-10T20:48:34.000Z</LastModified>
    <ETag>"7778aef83f66abc1fa1e8477f296d394"</ETag>
    <Size>10485760</Size>
  </Part>
  <Part>
    <PartNumber>3</PartNumber>
    <LastModified>2010-11-10T20:48:33.000Z</LastModified>
    <ETag>"aaaa18db4cc2f85cedef654fccc4a4x8"</ETag>
    <Size>10485760</Size>
  </Part>
</ListPartsResult>

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoXmlInit
    Boolean iSuccess
    String sUploadId
    Handle hoRest
    Boolean iBTls
    Integer iPort
    Boolean iBAutoReconnect
    Variant vAuthAws
    Handle hoAuthAws
    String sResponseXml
    Handle hoXml
    Variant vPart
    Handle hoPart
    Boolean iHasMoreParts
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

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

    // Other S3 Multipart Upload Examples:
    // Initiate Multipart Upload
    // S3 Upload Parts
    // Complete Multipart Upload
    // Abort Multipart Upload

    // When the multipart upload was initiated, an UploadId was provided in the XML response, and 
    // we saved it to a file.  We'll get the upload ID from there..

    Get Create (RefClass(cComChilkatXml)) To hoXmlInit
    If (Not(IsComObjectCreated(hoXmlInit))) Begin
        Send CreateComObject of hoXmlInit
    End
    Get ComLoadXmlFile Of hoXmlInit "s3_multipart_uploads/initiate.xml" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Did not find the initiate.xml XML file."
        Procedure_Return
    End

    Get ComGetChildContent Of hoXmlInit "UploadId" To sUploadId
    Showln "UploadId = " sUploadId

    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.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"

    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 "chilkat100".
    Set ComHost Of hoRest To "chilkat100.s3.amazonaws.com"

    // Add the query parameters.
    Get ComAddQueryParam Of hoRest "uploadId" sUploadId To iSuccess
    Get ComAddQueryParam Of hoRest "max-parts" "100" To iSuccess
    Get ComAddQueryParam Of hoRest "part-number-marker" "0" To iSuccess

    // Our ObjectName in this case is "somethingBig.zip".
    Get ComFullRequestNoBody Of hoRest "GET" "/somethingBig.zip" To sResponseXml
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // When successful, the S3 Storage service will respond with a 200 response code,
    // with an XML body.  
    Get ComResponseStatusCode Of hoRest To iTemp1
    If (iTemp1 <> 200) Begin
        // Examine the request/response to see what happened.
        Get ComResponseStatusCode Of hoRest To iTemp1
        Showln "response status code = " iTemp1
        Get ComResponseStatusText Of hoRest To sTemp1
        Showln "response status text = " sTemp1
        Get ComResponseHeader Of hoRest To sTemp1
        Showln "response header: " sTemp1
        Showln "response body: " sResponseXml
        Showln "---"
        Get ComLastRequestStartLine Of hoRest To sTemp1
        Showln "LastRequestStartLine: " sTemp1
        Get ComLastRequestHeader Of hoRest To sTemp1
        Showln "LastRequestHeader: " sTemp1
    End

    Get Create (RefClass(cComChilkatXml)) To hoXml
    If (Not(IsComObjectCreated(hoXml))) Begin
        Send CreateComObject of hoXml
    End
    Get ComLoadXml Of hoXml sResponseXml To iSuccess

    Get ComGetXml Of hoXml To sTemp1
    Showln sTemp1
    Showln "----"

    // To iterate over the parts in the response, navigate to the 1st "Part" node
    // and then iterate over siblings until there are no more.
    Get ComFindChild Of hoXml "Part" To vPart
    If (IsComObject(vPart)) Begin
        Get Create (RefClass(cComChilkatXml)) To hoPart
        Set pvComObject Of hoPart To vPart
    End
    Get ComLastMethodSuccess Of hoXml To bTemp1
    If (bTemp1 = False) Begin
        Showln "No parts exist."
        Procedure_Return
    End

    Move True To iHasMoreParts
    While (iHasMoreParts = True)
        Get ComGetChildContent Of hoPart "PartNumber" To sTemp1
        Showln "PartNumber: " sTemp1
        Get ComGetChildContent Of hoPart "LastModified" To sTemp1
        Showln "LastModified: " sTemp1
        Get ComGetChildContent Of hoPart "ETag" To sTemp1
        Showln "ETag: " sTemp1
        Get ComGetChildContent Of hoPart "Size" To sTemp1
        Showln "Size: " sTemp1
        Showln "----"

        // Advance to the next sibling until we run out.
        Get ComNextSibling2 Of hoPart To iHasMoreParts
    Loop

    Send Destroy of hoPart


End_Procedure

 

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