Visual FoxPro

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>

Visual FoxPro

LOCAL lnSuccess
LOCAL loXmlInit
LOCAL lcUploadId
LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL loAuthAws
LOCAL lcResponseXml
LOCAL loXml
LOCAL loPart
LOCAL lnHasMoreParts

lnSuccess = 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..

loXmlInit = CreateObject('Chilkat.Xml')
lnSuccess = loXmlInit.LoadXmlFile("s3_multipart_uploads/initiate.xml")
IF (lnSuccess <> 1) THEN
    ? "Did not find the initiate.xml XML file."
    RELEASE loXmlInit
    CANCEL
ENDIF

lcUploadId = loXmlInit.GetChildContent("UploadId")
? "UploadId = " + lcUploadId

loRest = CreateObject('Chilkat.Rest')

* Connect to the Amazon AWS REST server.
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("s3.amazonaws.com",lnPort,lnBTls,lnBAutoReconnect)

* ----------------------------------------------------------------------------
* 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.
loAuthAws = CreateObject('Chilkat.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.SecretKey = "AWS_SECRET_KEY"
loAuthAws.ServiceName = "s3"

lnSuccess = loRest.SetAuthAws(loAuthAws)

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

* Add the query parameters.
loRest.AddQueryParam("uploadId",lcUploadId)
loRest.AddQueryParam("max-parts","100")
loRest.AddQueryParam("part-number-marker","0")

* Our ObjectName in this case is "somethingBig.zip".
lcResponseXml = loRest.FullRequestNoBody("GET","/somethingBig.zip")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loXmlInit
    RELEASE loRest
    RELEASE loAuthAws
    CANCEL
ENDIF

* When successful, the S3 Storage service will respond with a 200 response code,
* with an XML body.  
IF (loRest.ResponseStatusCode <> 200) THEN
    * Examine the request/response to see what happened.
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + lcResponseXml
    ? "---"
    ? "LastRequestStartLine: " + loRest.LastRequestStartLine
    ? "LastRequestHeader: " + loRest.LastRequestHeader
ENDIF

loXml = CreateObject('Chilkat.Xml')
loXml.LoadXml(lcResponseXml)

? loXml.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.
loPart = loXml.FindChild("Part")
IF (loXml.LastMethodSuccess = 0) THEN
    ? "No parts exist."
    RELEASE loXmlInit
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loXml
    CANCEL
ENDIF

lnHasMoreParts = 1
DO WHILE lnHasMoreParts = 1
    ? "PartNumber: " + loPart.GetChildContent("PartNumber")
    ? "LastModified: " + loPart.GetChildContent("LastModified")
    ? "ETag: " + loPart.GetChildContent("ETag")
    ? "Size: " + loPart.GetChildContent("Size")
    ? "----"

    * Advance to the next sibling until we run out.
    lnHasMoreParts = loPart.NextSibling2()
ENDDO

RELEASE loPart

RELEASE loXmlInit
RELEASE loRest
RELEASE loAuthAws
RELEASE loXml