Struct MultipartUpload 

pub struct MultipartUpload<'a> { /* private fields */ }

Chunked multipart upload simulation.

Mimics the semantics of S3/GCS multipart uploads:

1. Create an upload session via MultipartUpload::new(store, key).
2. Upload parts with upload_part(part_number, data).
3. Finalise with complete() which concatenates parts and stores the object.

Parts may be uploaded in any order; they are sorted by part number on complete.

Any part number ≥ 1 is valid.

Implementations

impl<'a> MultipartUpload<'a>

pub fn new(store: &'a dyn ObjectStore, key: ObjectKey) -> Self

Create a new multipart upload session.

pub fn with_min_part_size(self, size: usize) -> Self

Set the minimum part size advisory (default: 5 MiB). Parts smaller than this will be accepted but a warning can be emitted.

pub fn upload_part(&mut self, part_number: u16, data: Vec<u8>) -> Result<()>

Upload a single part.

Part numbers must be in [1, 10_000]. Parts are buffered in memory until complete() is called.

pub fn part_count(&self) -> usize

Return the number of parts currently uploaded.

pub fn total_bytes(&self) -> usize

Return the total bytes buffered so far.

pub fn abort(&mut self)

Abort the upload and discard all buffered parts.

pub fn complete(self) -> Result<UploadResult>

Finalise the upload: sort parts by part number, concatenate, and store.

Consumes self.