forked from Deuxfleurs/garage
Fix partnumber
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parent
338b1b83ee
commit
acdf893362
1 changed files with 117 additions and 91 deletions
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@ -19,6 +19,8 @@ use garage_model::version_table::*;
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use crate::error::*;
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const X_AMZ_MP_PARTS_COUNT: &str = "x-amz-mp-parts-count";
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fn object_headers(
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version: &ObjectVersion,
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version_meta: &ObjectVersionMeta,
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@ -120,39 +122,49 @@ pub async fn handle_head(
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}
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if let Some(pn) = part_number {
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if let ObjectVersionData::Inline(_, _) = version_data {
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// Not a multipart upload
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return Err(Error::BadRequest(
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"Cannot process part_number argument: not a multipart upload".into(),
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));
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match version_data {
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ObjectVersionData::Inline(_, bytes) => {
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if pn != 1 {
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return Err(Error::InvalidPart);
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}
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", bytes.len()))
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.header(
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CONTENT_RANGE,
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format!("bytes 0-{}/{}", bytes.len() - 1, bytes.len()),
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)
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.header(X_AMZ_MP_PARTS_COUNT, "1")
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.status(StatusCode::PARTIAL_CONTENT)
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.body(Body::empty())?)
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}
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ObjectVersionData::FirstBlock(_, _) => {
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let version = garage
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.version_table
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.get(&object_version.uuid, &EmptyKey)
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.await?
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.ok_or(Error::NoSuchKey)?;
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let (part_offset, part_end) =
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calculate_part_bounds(&version, pn).ok_or(Error::InvalidPart)?;
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let n_parts = version.parts_etags.items().len();
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", part_end - part_offset))
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.header(
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CONTENT_RANGE,
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format!(
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"bytes {}-{}/{}",
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part_offset,
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part_end - 1,
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version_meta.size
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),
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)
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.header(X_AMZ_MP_PARTS_COUNT, format!("{}", n_parts))
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.status(StatusCode::PARTIAL_CONTENT)
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.body(Body::empty())?)
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}
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_ => unreachable!(),
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}
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let version = garage
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.version_table
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.get(&object_version.uuid, &EmptyKey)
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.await?
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.ok_or(Error::NoSuchKey)?;
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if !version.has_part_number(pn) {
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return Err(Error::BadRequest(format!(
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"Part number {} does not exist",
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pn
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)));
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}
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let part_size: u64 = version
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.blocks
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.items()
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.iter()
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.filter(|(k, _)| k.part_number == pn)
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.map(|(_, b)| b.size)
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.sum();
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let n_parts = version.parts_etags.items().len();
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", part_size))
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.header("x-amz-mp-parts-count", format!("{}", n_parts))
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.status(StatusCode::OK)
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.body(Body::empty())?)
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} else {
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", version_meta.size))
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@ -196,22 +208,27 @@ pub async fn handle_get(
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return Ok(cached);
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}
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if let Some(pn) = part_number {
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return handle_get_part(garage, req, last_v, last_v_data, last_v_meta, pn).await;
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}
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// No part_number specified, it's a normal get object
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if let Some(range) = parse_range_header(req, last_v_meta.size)? {
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return handle_get_range(
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garage,
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last_v,
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last_v_data,
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last_v_meta,
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range.start,
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range.start + range.length,
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)
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.await;
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match (part_number, parse_range_header(req, last_v_meta.size)?) {
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(Some(_), Some(_)) => {
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return Err(Error::BadRequest(
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"Cannot specify both partNumber and Range header".into(),
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));
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}
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(Some(pn), None) => {
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return handle_get_part(garage, last_v, last_v_data, last_v_meta, pn).await;
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}
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(None, Some(range)) => {
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return handle_get_range(
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garage,
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last_v,
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last_v_data,
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last_v_meta,
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range.start,
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range.start + range.length,
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)
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.await;
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}
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(None, None) => (),
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}
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let resp_builder = object_headers(last_v, last_v_meta)
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@ -305,58 +322,51 @@ async fn handle_get_range(
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async fn handle_get_part(
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garage: Arc<Garage>,
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req: &Request<Body>,
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object_version: &ObjectVersion,
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version_data: &ObjectVersionData,
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version_meta: &ObjectVersionMeta,
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part_number: u64,
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) -> Result<Response<Body>, Error> {
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let version = if let ObjectVersionData::FirstBlock(_, _) = version_data {
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garage
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.version_table
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.get(&object_version.uuid, &EmptyKey)
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.await?
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.ok_or(Error::NoSuchKey)?
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} else {
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return Err(Error::BadRequest(
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"Cannot handle part_number: not a multipart upload.".into(),
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));
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};
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let resp_builder =
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object_headers(object_version, version_meta).status(StatusCode::PARTIAL_CONTENT);
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let blocks = version
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.blocks
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.items()
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.iter()
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.filter(|(k, _)| k.part_number == part_number)
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.cloned()
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.collect::<Vec<_>>();
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match version_data {
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ObjectVersionData::Inline(_, bytes) => {
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if part_number != 1 {
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return Err(Error::InvalidPart);
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}
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Ok(resp_builder
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.header(CONTENT_LENGTH, format!("{}", bytes.len()))
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.header(
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CONTENT_RANGE,
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format!("bytes {}-{}/{}", 0, bytes.len() - 1, bytes.len()),
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)
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.header(X_AMZ_MP_PARTS_COUNT, "1")
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.body(Body::from(bytes.to_vec()))?)
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}
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ObjectVersionData::FirstBlock(_, _) => {
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let version = garage
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.version_table
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.get(&object_version.uuid, &EmptyKey)
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.await?
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.ok_or(Error::NoSuchKey)?;
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if blocks.is_empty() {
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return Err(Error::BadRequest(format!("No such part: {}", part_number)));
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}
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let (begin, end) =
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calculate_part_bounds(&version, part_number).ok_or(Error::InvalidPart)?;
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let n_parts = version.parts_etags.items().len();
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let part_size = blocks.iter().map(|(_, b)| b.size).sum();
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let body = body_from_blocks_range(garage, version.blocks.items(), begin, end);
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if let Some(r) = parse_range_header(req, part_size)? {
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let range_begin = r.start;
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let range_end = r.start + r.length;
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let body = body_from_blocks_range(garage, &blocks[..], range_begin, range_end);
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", range_end - range_begin))
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.header(
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CONTENT_RANGE,
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format!("bytes {}-{}/{}", range_begin, range_end - 1, part_size),
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)
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.status(StatusCode::PARTIAL_CONTENT)
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.body(body)?)
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} else {
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let body = body_from_blocks_range(garage, &blocks[..], 0, part_size);
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Ok(object_headers(object_version, version_meta)
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.header(CONTENT_LENGTH, format!("{}", part_size))
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.status(StatusCode::OK)
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.body(body)?)
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Ok(resp_builder
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.header(CONTENT_LENGTH, format!("{}", end - begin))
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.header(
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CONTENT_RANGE,
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format!("bytes {}-{}/{}", begin, end - 1, version_meta.size),
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)
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.header(X_AMZ_MP_PARTS_COUNT, format!("{}", n_parts))
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.body(body)?)
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}
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_ => unreachable!(),
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}
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}
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@ -382,6 +392,22 @@ fn parse_range_header(
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Ok(range)
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}
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fn calculate_part_bounds(v: &Version, part_number: u64) -> Option<(u64, u64)> {
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let mut offset = 0;
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for (i, (bk, bv)) in v.blocks.items().iter().enumerate() {
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if bk.part_number == part_number {
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let size: u64 = v.blocks.items()[i..]
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.iter()
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.take_while(|(k, _)| k.part_number == part_number)
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.map(|(_, v)| v.size)
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.sum();
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return Some((offset, offset + size));
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}
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offset += bv.size;
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}
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None
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}
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fn body_from_blocks_range(
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garage: Arc<Garage>,
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all_blocks: &[(VersionBlockKey, VersionBlock)],
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