(C#) 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 .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// 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..

Chilkat.Xml xmlInit = new Chilkat.Xml();
bool success = xmlInit.LoadXmlFile("s3_multipart_uploads/initiate.xml");
if (success != true) {
    Debug.WriteLine("Did not find the initiate.xml XML file.");
    return;
}

string uploadId = xmlInit.GetChildContent("UploadId");
Debug.WriteLine("UploadId = " + uploadId);

Chilkat.Rest rest = new Chilkat.Rest();

// Connect to the Amazon AWS REST server.
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
success = rest.Connect("s3.amazonaws.com",port,bTls,bAutoReconnect);

// ----------------------------------------------------------------------------
// 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.
Chilkat.AuthAws authAws = new Chilkat.AuthAws();
authAws.AccessKey = "AWS_ACCESS_KEY";
authAws.SecretKey = "AWS_SECRET_KEY";
authAws.ServiceName = "s3";

success = rest.SetAuthAws(authAws);

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

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

// Our ObjectName in this case is "somethingBig.zip".
string responseXml = rest.FullRequestNoBody("GET","/somethingBig.zip");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// When successful, the S3 Storage service will respond with a 200 response code,
// with an XML body.  
if (rest.ResponseStatusCode != 200) {
    // Examine the request/response to see what happened.
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response body: " + responseXml);
    Debug.WriteLine("---");
    Debug.WriteLine("LastRequestStartLine: " + rest.LastRequestStartLine);
    Debug.WriteLine("LastRequestHeader: " + rest.LastRequestHeader);
}

Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadXml(responseXml);

Debug.WriteLine(xml.GetXml());
Debug.WriteLine("----");

// To iterate over the parts in the response, navigate to the 1st "Part" node
// and then iterate over siblings until there are no more.
Chilkat.Xml part = xml.FindChild("Part");
if (xml.LastMethodSuccess == false) {
    Debug.WriteLine("No parts exist.");
    return;
}

bool hasMoreParts = true;
while (hasMoreParts == true) {
    Debug.WriteLine("PartNumber: " + part.GetChildContent("PartNumber"));
    Debug.WriteLine("LastModified: " + part.GetChildContent("LastModified"));
    Debug.WriteLine("ETag: " + part.GetChildContent("ETag"));
    Debug.WriteLine("Size: " + part.GetChildContent("Size"));
    Debug.WriteLine("----");

    // Advance to the next sibling until we run out.
    hasMoreParts = part.NextSibling2();
}