Xbase++

S3 List Parts

See more Amazon S3 (new) Examples

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>

Xbase++

LOCAL nSuccess
LOCAL oXmlInit
LOCAL cUploadId
LOCAL oRest
LOCAL nBTls
LOCAL nPort
LOCAL nBAutoReconnect
LOCAL oAuthAws
LOCAL cResponseXml
LOCAL oXml
LOCAL oPart
LOCAL nHasMoreParts

nSuccess := 0

//  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..

oXmlInit := CreateObject("Chilkat.Xml")
nSuccess := oXmlInit:LoadXmlFile("s3_multipart_uploads/initiate.xml")
IF (nSuccess != 1)
    ? "Did not find the initiate.xml XML file."
    oXmlInit:destroy()
    RETURN
ENDIF

cUploadId := oXmlInit:GetChildContent("UploadId")
? "UploadId = " + cUploadId

oRest := CreateObject("Chilkat.Rest")

//  Connect to the Amazon AWS REST server.
nBTls := 1
nPort := 443
nBAutoReconnect := 1
nSuccess := oRest:Connect("s3.amazonaws.com", nPort, nBTls, nBAutoReconnect)

//  ----------------------------------------------------------------------------
//  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.
oAuthAws := CreateObject("Chilkat.AuthAws")
oAuthAws:AccessKey := "AWS_ACCESS_KEY"
oAuthAws:SecretKey := "AWS_SECRET_KEY"
oAuthAws:ServiceName := "s3"

nSuccess := oRest:SetAuthAws(oAuthAws)

//  Set the bucket name via the HOST header.
//  In this case, the bucket name is "chilkat100".
oRest:Host := "chilkat100.s3.amazonaws.com"

//  Add the query parameters.
oRest:AddQueryParam("uploadId", cUploadId)
oRest:AddQueryParam("max-parts", "100")
oRest:AddQueryParam("part-number-marker", "0")

//  Our ObjectName in this case is "somethingBig.zip".
cResponseXml := oRest:FullRequestNoBody("GET", "/somethingBig.zip")
IF (oRest:LastMethodSuccess != 1)
    ? oRest:LastErrorText
    oXmlInit:destroy()
    oRest:destroy()
    oAuthAws:destroy()
    RETURN
ENDIF

//  When successful, the S3 Storage service will respond with a 200 response code,
//  with an XML body.  
IF (oRest:ResponseStatusCode != 200)
    //  Examine the request/response to see what happened.
    ? "response status code = " + Str(oRest:ResponseStatusCode)
    ? "response status text = " + oRest:ResponseStatusText
    ? "response header: " + oRest:ResponseHeader
    ? "response body: " + cResponseXml
    ? "---"
    ? "LastRequestStartLine: " + oRest:LastRequestStartLine
    ? "LastRequestHeader: " + oRest:LastRequestHeader
ENDIF

oXml := CreateObject("Chilkat.Xml")
oXml:LoadXml(cResponseXml)

? oXml:GetXml()
? "----"

//  To iterate over the parts in the response, navigate to the 1st "Part" node
//  and then iterate over siblings until there are no more.
oPart := oXml:FindChild("Part")
IF (oXml:LastMethodSuccess == 0)
    ? "No parts exist."
    oXmlInit:destroy()
    oRest:destroy()
    oAuthAws:destroy()
    oXml:destroy()
    RETURN
ENDIF

nHasMoreParts := 1
DO WHILE nHasMoreParts == 1
    ? "PartNumber: " + oPart:GetChildContent("PartNumber")
    ? "LastModified: " + oPart:GetChildContent("LastModified")
    ? "ETag: " + oPart:GetChildContent("ETag")
    ? "Size: " + oPart:GetChildContent("Size")
    ? "----"

    //  Advance to the next sibling until we run out.
    nHasMoreParts := oPart:NextSibling2()
ENDDO

oPart:destroy()

oXmlInit:destroy()
oRest:destroy()
oAuthAws:destroy()
oXml:destroy()