(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 C/C++ Library Downloads
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#include <C_CkXml.h>
#include <C_CkRest.h>
#include <C_CkAuthAws.h>

void ChilkatSample(void)
    {
    HCkXml xmlInit;
    BOOL success;
    const char *uploadId;
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkAuthAws authAws;
    const char *responseXml;
    HCkXml xml;
    HCkXml part;
    BOOL hasMoreParts;

    // 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..

    xmlInit = CkXml_Create();
    success = CkXml_LoadXmlFile(xmlInit,"s3_multipart_uploads/initiate.xml");
    if (success != TRUE) {
        printf("Did not find the initiate.xml XML file.\n");
        CkXml_Dispose(xmlInit);
        return;
    }

    uploadId = CkXml_getChildContent(xmlInit,"UploadId");
    printf("UploadId = %s\n",uploadId);

    rest = CkRest_Create();

    // Connect to the Amazon AWS REST server.
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"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 = CkAuthAws_Create();
    CkAuthAws_putAccessKey(authAws,"AWS_ACCESS_KEY");
    CkAuthAws_putSecretKey(authAws,"AWS_SECRET_KEY");
    CkAuthAws_putServiceName(authAws,"s3");

    success = CkRest_SetAuthAws(rest,authAws);

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

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

    // Our ObjectName in this case is "somethingBig.zip".
    responseXml = CkRest_fullRequestNoBody(rest,"GET","/somethingBig.zip");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkXml_Dispose(xmlInit);
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        return;
    }

    // When successful, the S3 Storage service will respond with a 200 response code,
    // with an XML body.  
    if (CkRest_getResponseStatusCode(rest) != 200) {
        // Examine the request/response to see what happened.
        printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
        printf("response status text = %s\n",CkRest_responseStatusText(rest));
        printf("response header: %s\n",CkRest_responseHeader(rest));
        printf("response body: %s\n",responseXml);
        printf("---\n");
        printf("LastRequestStartLine: %s\n",CkRest_lastRequestStartLine(rest));
        printf("LastRequestHeader: %s\n",CkRest_lastRequestHeader(rest));
    }

    xml = CkXml_Create();
    CkXml_LoadXml(xml,responseXml);

    printf("%s\n",CkXml_getXml(xml));
    printf("----\n");

    // To iterate over the parts in the response, navigate to the 1st "Part" node
    // and then iterate over siblings until there are no more.
    part = CkXml_FindChild(xml,"Part");
    if (CkXml_getLastMethodSuccess(xml) == FALSE) {
        printf("No parts exist.\n");
        CkXml_Dispose(xmlInit);
        CkRest_Dispose(rest);
        CkAuthAws_Dispose(authAws);
        CkXml_Dispose(xml);
        return;
    }

    hasMoreParts = TRUE;
    while (hasMoreParts == TRUE) {
        printf("PartNumber: %s\n",CkXml_getChildContent(part,"PartNumber"));
        printf("LastModified: %s\n",CkXml_getChildContent(part,"LastModified"));
        printf("ETag: %s\n",CkXml_getChildContent(part,"ETag"));
        printf("Size: %s\n",CkXml_getChildContent(part,"Size"));
        printf("----\n");

        // Advance to the next sibling until we run out.
        hasMoreParts = CkXml_NextSibling2(part);
    }

    CkXml_Dispose(part);


    CkXml_Dispose(xmlInit);
    CkRest_Dispose(rest);
    CkAuthAws_Dispose(authAws);
    CkXml_Dispose(xml);

    }