Zig

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>

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // 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..

    const xml_init = try chilkat.Xml.init();
    defer xml_init.deinit();
    xml_init.loadXmlFile("s3_multipart_uploads/initiate.xml") catch {
        std.debug.print("Did not find the initiate.xml XML file.\n", .{});
        return;
    };

    const upload_id = try xml_init.getChildContent(alloc, "UploadId");
    std.debug.print("UploadId = {s}\n", .{upload_id});

    const rest = try chilkat.Rest.init();
    defer rest.deinit();

    // Connect to the Amazon AWS REST server.
    const b_tls = true;
    const port = 443;
    const b_auto_reconnect = true;
    try rest.connect("s3.amazonaws.com", port, b_tls, b_auto_reconnect);

    // ----------------------------------------------------------------------------
    // 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.
    const auth_aws = try chilkat.AuthAws.init();
    defer auth_aws.deinit();
    auth_aws.setAccessKey("AWS_ACCESS_KEY");
    auth_aws.setSecretKey("AWS_SECRET_KEY");
    auth_aws.setServiceName("s3");

    try rest.setAuthAws(auth_aws);

    // 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", upload_id) catch {};
    rest.addQueryParam("max-parts", "100") catch {};
    rest.addQueryParam("part-number-marker", "0") catch {};

    // Our ObjectName in this case is "somethingBig.zip".
    const response_xml = rest.fullRequestNoBody(alloc, "GET", "/somethingBig.zip") catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        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.
        std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
        std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
        std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
        std.debug.print("response body: {s}\n", .{response_xml});
        std.debug.print("---\n", .{});
        std.debug.print("LastRequestStartLine: {s}\n", .{try rest.getLastRequestStartLine(alloc)});
        std.debug.print("LastRequestHeader: {s}\n", .{try rest.getLastRequestHeader(alloc)});
    }

    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.loadXml(response_xml) catch {};

    std.debug.print("{s}\n", .{try xml.getXml(alloc)});
    std.debug.print("----\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.
    const part = xml.findChild("Part") catch {
        std.debug.print("No parts exist.\n", .{});
        return;
    };
    defer part.deinit();

    var has_more_parts: bool = true;
    while (has_more_parts) {
        std.debug.print("PartNumber: {s}\n", .{try part.getChildContent(alloc, "PartNumber")});
        std.debug.print("LastModified: {s}\n", .{try part.getChildContent(alloc, "LastModified")});
        std.debug.print("ETag: {s}\n", .{try part.getChildContent(alloc, "ETag")});
        std.debug.print("Size: {s}\n", .{try part.getChildContent(alloc, "Size")});
        std.debug.print("----\n", .{});

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