Java

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>

Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthAws;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.Xml;

public class ChilkatExample {

    public static void main(String[] args) {
        // 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..

        Xml xmlInit = new Xml();
        try {
            xmlInit.loadXmlFile("s3_multipart_uploads/initiate.xml");
        } catch (ChilkatException e) {
            System.out.println("Did not find the initiate.xml XML file.");
            return;
        }

        String uploadId = xmlInit.getChildContent("UploadId");
        System.out.println("UploadId = " + uploadId);

        Rest rest = new Rest();

        // Connect to the Amazon AWS REST server.
        boolean bTls = true;
        int port = 443;
        boolean bAutoReconnect = true;
        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.
        AuthAws authAws = new AuthAws();
        authAws.setAccessKey("AWS_ACCESS_KEY");
        authAws.setSecretKey("AWS_SECRET_KEY");
        authAws.setServiceName("s3");

        rest.setAuthAws(authAws);

        // Set the bucket name via the HOST header.
        // In this case, the bucket name is "chilkat100".
        rest.setHost("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;
        try {
            responseXml = rest.fullRequestNoBody("GET", "/somethingBig.zip");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // When successful, the S3 Storage service will respond with a 200 response code,
        // with an XML body.
        if (rest.getResponseStatusCode() != 200) {
            // Examine the request/response to see what happened.
            System.out.println("response status code = " + rest.getResponseStatusCode());
            System.out.println("response status text = " + rest.getResponseStatusText());
            System.out.println("response header: " + rest.getResponseHeader());
            System.out.println("response body: " + responseXml);
            System.out.println("---");
            System.out.println("LastRequestStartLine: " + rest.getLastRequestStartLine());
            System.out.println("LastRequestHeader: " + rest.getLastRequestHeader());
        }

        Xml xml = new Xml();
        xml.loadXml(responseXml);

        System.out.println(xml.getXml());
        System.out.println("----");

        // To iterate over the parts in the response, navigate to the 1st "Part" node
        // and then iterate over siblings until there are no more.
        Xml part = xml.findChild("Part");
        if (part == null) {
            System.out.println("No parts exist.");
            return;
        }

        boolean hasMoreParts = true;
        while (hasMoreParts) {
            System.out.println("PartNumber: " + part.getChildContent("PartNumber"));
            System.out.println("LastModified: " + part.getChildContent("LastModified"));
            System.out.println("ETag: " + part.getChildContent("ETag"));
            System.out.println("Size: " + part.getChildContent("Size"));
            System.out.println("----");

            // Advance to the next sibling until we run out.
            hasMoreParts = part.nextSibling2();
        }

        part.close();
    }
}