Reorganize code in s3_put.rs

author: Alex Auvolat <alex@adnab.me> 2021-04-07 10:00:47 +0200
committer: Alex Auvolat <alex@adnab.me> 2021-04-07 10:00:47 +0200
commit: c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e (patch)
tree: 739ce03151cd601a90ed24e23aa0788ea29a29cb /src/api
parent: 93a9f9613051385832e22f0c54e9682e814e468c (diff)
download: garage-c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e.tar.gz
garage-c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e.zip
1 files changed, 212 insertions, 207 deletions
diff --git a/src/api/s3_put.rs b/src/api/s3_put.rs
index d023bcef..50362b28 100644
--- a/src/api/s3_put.rs
+++ b/src/api/s3_put.rs
@@ -23,6 +23,8 @@ use crate::encoding::*;
 use crate::error::*;
 use crate::signature::verify_signed_content;
 
+// ---- PutObject call ----
+
 pub async fn handle_put(
 	garage: Arc<Garage>,
 	req: Request<Body>,
@@ -151,174 +153,6 @@ pub async fn handle_put(
 	Ok(put_response(version_uuid, md5sum_hex))
 }
 
-/// Validate MD5 sum against content-md5 header
-/// and sha256sum against signed content-sha256
-fn ensure_checksum_matches(
-	data_md5sum: &[u8],
-	data_sha256sum: garage_util::data::FixedBytes32,
-	content_md5: Option<&str>,
-	content_sha256: Option<garage_util::data::FixedBytes32>,
-) -> Result<(), Error> {
-	if let Some(expected_sha256) = content_sha256 {
-		if expected_sha256 != data_sha256sum {
-			return Err(Error::BadRequest(format!(
-				"Unable to validate x-amz-content-sha256"
-			)));
-		} else {
-			trace!("Successfully validated x-amz-content-sha256");
-		}
-	}
-	if let Some(expected_md5) = content_md5 {
-		if expected_md5.trim_matches('"') != base64::encode(data_md5sum) {
-			return Err(Error::BadRequest(format!("Unable to validate content-md5")));
-		} else {
-			trace!("Successfully validated content-md5");
-		}
-	}
-	Ok(())
-}
-
-async fn read_and_put_blocks(
-	garage: &Garage,
-	version: &Version,
-	part_number: u64,
-	first_block: Vec<u8>,
-	first_block_hash: Hash,
-	chunker: &mut BodyChunker,
-) -> Result<(u64, GenericArray<u8, typenum::U16>, Hash), Error> {
-	let mut md5hasher = Md5::new();
-	let mut sha256hasher = Sha256::new();
-	md5hasher.update(&first_block[..]);
-	sha256hasher.update(&first_block[..]);
-
-	let mut next_offset = first_block.len();
-	let mut put_curr_version_block = put_block_meta(
-		&garage,
-		&version,
-		part_number,
-		0,
-		first_block_hash,
-		first_block.len() as u64,
-	);
-	let mut put_curr_block = garage
-		.block_manager
-		.rpc_put_block(first_block_hash, first_block);
-
-	loop {
-		let (_, _, next_block) =
-			futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
-		if let Some(block) = next_block {
-			md5hasher.update(&block[..]);
-			sha256hasher.update(&block[..]);
-			let block_hash = blake2sum(&block[..]);
-			let block_len = block.len();
-			put_curr_version_block = put_block_meta(
-				&garage,
-				&version,
-				part_number,
-				next_offset as u64,
-				block_hash,
-				block_len as u64,
-			);
-			put_curr_block = garage.block_manager.rpc_put_block(block_hash, block);
-			next_offset += block_len;
-		} else {
-			break;
-		}
-	}
-
-	let total_size = next_offset as u64;
-	let data_md5sum = md5hasher.finalize();
-
-	let data_sha256sum = sha256hasher.finalize();
-	let data_sha256sum = Hash::try_from(&data_sha256sum[..]).unwrap();
-
-	Ok((total_size, data_md5sum, data_sha256sum))
-}
-
-async fn put_block_meta(
-	garage: &Garage,
-	version: &Version,
-	part_number: u64,
-	offset: u64,
-	hash: Hash,
-	size: u64,
-) -> Result<(), GarageError> {
-	let mut version = version.clone();
-	version.blocks.put(
-		VersionBlockKey {
-			part_number,
-			offset,
-		},
-		VersionBlock { hash, size },
-	);
-
-	let block_ref = BlockRef {
-		block: hash,
-		version: version.uuid,
-		deleted: false.into(),
-	};
-
-	futures::try_join!(
-		garage.version_table.insert(&version),
-		garage.block_ref_table.insert(&block_ref),
-	)?;
-	Ok(())
-}
-
-struct BodyChunker {
-	body: Body,
-	read_all: bool,
-	min_block_size: usize,
-	avg_block_size: usize,
-	max_block_size: usize,
-	buf: VecDeque<u8>,
-}
-
-impl BodyChunker {
-	fn new(body: Body, block_size: usize) -> Self {
-		let min_block_size = block_size / 4 * 3;
-		let avg_block_size = block_size;
-		let max_block_size = block_size * 2;
-		Self {
-			body,
-			read_all: false,
-			min_block_size,
-			avg_block_size,
-			max_block_size,
-			buf: VecDeque::with_capacity(2 * max_block_size),
-		}
-	}
-	async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
-		while !self.read_all && self.buf.len() < self.max_block_size {
-			if let Some(block) = self.body.next().await {
-				let bytes = block?;
-				trace!("Body next: {} bytes", bytes.len());
-				self.buf.extend(&bytes[..]);
-			} else {
-				self.read_all = true;
-			}
-		}
-		if self.buf.len() == 0 {
-			Ok(None)
-		} else {
-			let mut iter = FastCDC::with_eof(
-				self.buf.make_contiguous(),
-				self.min_block_size,
-				self.avg_block_size,
-				self.max_block_size,
-				self.read_all,
-			);
-			if let Some(Chunk { length, .. }) = iter.next() {
-				let block = self.buf.drain(..length).collect::<Vec<u8>>();
-				Ok(Some(block))
-			} else {
-				unreachable!("FastCDC returned not chunk")
-			}
-		}
-	}
-}
-
 pub fn put_response(version_uuid: UUID, md5sum_hex: String) -> Response<Body> {
 	Response::builder()
 		.header("x-amz-version-id", hex::encode(version_uuid))
@@ -327,6 +161,8 @@ pub fn put_response(version_uuid: UUID, md5sum_hex: String) -> Response<Body> {
 		.unwrap()
 }
 
+// ---- Mutlipart upload calls ----
+
 pub async fn handle_create_multipart_upload(
 	garage: Arc<Garage>,
 	req: &Request<Body>,
@@ -591,17 +427,64 @@ pub async fn handle_abort_multipart_upload(
 	Ok(Response::new(Body::from(vec![])))
 }
 
-fn get_mime_type(req: &Request<Body>) -> Result<String, Error> {
-	Ok(req
+// ---- Parsing input to multipart upload calls ----
+
+fn decode_upload_id(id: &str) -> Result<UUID, Error> {
+	let id_bin = hex::decode(id).ok_or_bad_request("Invalid upload ID")?;
+	if id_bin.len() != 32 {
+		return None.ok_or_bad_request("Invalid upload ID");
+	}
+	let mut uuid = [0u8; 32];
+	uuid.copy_from_slice(&id_bin[..]);
+	Ok(UUID::from(uuid))
+}
+
+#[derive(Debug)]
+struct CompleteMultipartUploadPart {
+	etag: String,
+	part_number: u64,
+}
+
+fn parse_complete_multpart_upload_body(
+	xml: &roxmltree::Document,
+) -> Option<Vec<CompleteMultipartUploadPart>> {
+	let mut parts = vec![];
+
+	let root = xml.root();
+	let cmu = root.first_child()?;
+	if !cmu.has_tag_name("CompleteMultipartUpload") {
+		return None;
+	}
+
+	for item in cmu.children() {
+		if item.has_tag_name("Part") {
+			let etag = item.children().find(|e| e.has_tag_name("ETag"))?.text()?;
+			let part_number = item
+				.children()
+				.find(|e| e.has_tag_name("PartNumber"))?
+				.text()?;
+			parts.push(CompleteMultipartUploadPart {
+				etag: etag.trim_matches('"').to_string(),
+				part_number: part_number.parse().ok()?,
+			});
+		} else {
+			return None;
+		}
+	}
+
+	Some(parts)
+}
+
+// ---- Common code ----
+
+pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, Error> {
+	let content_type = req
 		.headers()
 		.get(hyper::header::CONTENT_TYPE)
 		.map(|x| x.to_str())
 		.unwrap_or(Ok("blob"))?
-		.to_string())
-}
+		.to_string();
 
-pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, Error> {
-	let content_type = get_mime_type(req)?;
 	let mut other = BTreeMap::new();
 
 	// Preserve standard headers
@@ -645,48 +528,170 @@ pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, E
 	})
 }
 
-fn decode_upload_id(id: &str) -> Result<UUID, Error> {
-	let id_bin = hex::decode(id).ok_or_bad_request("Invalid upload ID")?;
-	if id_bin.len() != 32 {
-		return None.ok_or_bad_request("Invalid upload ID");
+struct BodyChunker {
+	body: Body,
+	read_all: bool,
+	min_block_size: usize,
+	avg_block_size: usize,
+	max_block_size: usize,
+	buf: VecDeque<u8>,
+}
+
+impl BodyChunker {
+	fn new(body: Body, block_size: usize) -> Self {
+		let min_block_size = block_size / 4 * 3;
+		let avg_block_size = block_size;
+		let max_block_size = block_size * 2;
+		Self {
+			body,
+			read_all: false,
+			min_block_size,
+			avg_block_size,
+			max_block_size,
+			buf: VecDeque::with_capacity(2 * max_block_size),
+		}
+	}
+	async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
+		while !self.read_all && self.buf.len() < self.max_block_size {
+			if let Some(block) = self.body.next().await {
+				let bytes = block?;
+				trace!("Body next: {} bytes", bytes.len());
+				self.buf.extend(&bytes[..]);
+			} else {
+				self.read_all = true;
+			}
+		}
+		if self.buf.len() == 0 {
+			Ok(None)
+		} else {
+			let mut iter = FastCDC::with_eof(
+				self.buf.make_contiguous(),
+				self.min_block_size,
+				self.avg_block_size,
+				self.max_block_size,
+				self.read_all,
+			);
+			if let Some(Chunk { length, .. }) = iter.next() {
+				let block = self.buf.drain(..length).collect::<Vec<u8>>();
+				Ok(Some(block))
+			} else {
+				unreachable!("FastCDC returned not chunk")
+			}
+		}
 	}
-	let mut uuid = [0u8; 32];
-	uuid.copy_from_slice(&id_bin[..]);
-	Ok(UUID::from(uuid))
 }
 
-#[derive(Debug)]
-struct CompleteMultipartUploadPart {
-	etag: String,
+async fn read_and_put_blocks(
+	garage: &Garage,
+	version: &Version,
 	part_number: u64,
-}
+	first_block: Vec<u8>,
+	first_block_hash: Hash,
+	chunker: &mut BodyChunker,
+) -> Result<(u64, GenericArray<u8, typenum::U16>, Hash), Error> {
+	let mut md5hasher = Md5::new();
+	let mut sha256hasher = Sha256::new();
+	md5hasher.update(&first_block[..]);
+	sha256hasher.update(&first_block[..]);
 
-fn parse_complete_multpart_upload_body(
-	xml: &roxmltree::Document,
-) -> Option<Vec<CompleteMultipartUploadPart>> {
-	let mut parts = vec![];
+	let mut next_offset = first_block.len();
+	let mut put_curr_version_block = put_block_meta(
+		&garage,
+		&version,
+		part_number,
+		0,
+		first_block_hash,
+		first_block.len() as u64,
+	);
+	let mut put_curr_block = garage
+		.block_manager
+		.rpc_put_block(first_block_hash, first_block);
 
-	let root = xml.root();
-	let cmu = root.first_child()?;
-	if !cmu.has_tag_name("CompleteMultipartUpload") {
-		return None;
+	loop {
+		let (_, _, next_block) =
+			futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
+		if let Some(block) = next_block {
+			md5hasher.update(&block[..]);
+			sha256hasher.update(&block[..]);
+			let block_hash = blake2sum(&block[..]);
+			let block_len = block.len();
+			put_curr_version_block = put_block_meta(
+				&garage,
+				&version,
+				part_number,
+				next_offset as u64,
+				block_hash,
+				block_len as u64,
+			);
+			put_curr_block = garage.block_manager.rpc_put_block(block_hash, block);
+			next_offset += block_len;
+		} else {
+			break;
+		}
 	}
 
-	for item in cmu.children() {
-		if item.has_tag_name("Part") {
-			let etag = item.children().find(|e| e.has_tag_name("ETag"))?.text()?;
-			let part_number = item
-				.children()
-				.find(|e| e.has_tag_name("PartNumber"))?
-				.text()?;
-			parts.push(CompleteMultipartUploadPart {
-				etag: etag.trim_matches('"').to_string(),
-				part_number: part_number.parse().ok()?,
-			});
+	let total_size = next_offset as u64;
+	let data_md5sum = md5hasher.finalize();
+
+	let data_sha256sum = sha256hasher.finalize();
+	let data_sha256sum = Hash::try_from(&data_sha256sum[..]).unwrap();
+
+	Ok((total_size, data_md5sum, data_sha256sum))
+}
+
+async fn put_block_meta(
+	garage: &Garage,
+	version: &Version,
+	part_number: u64,
+	offset: u64,
+	hash: Hash,
+	size: u64,
+) -> Result<(), GarageError> {
+	let mut version = version.clone();
+	version.blocks.put(
+		VersionBlockKey {
+			part_number,
+			offset,
+		},
+		VersionBlock { hash, size },
+	);
+
+	let block_ref = BlockRef {
+		block: hash,
+		version: version.uuid,
+		deleted: false.into(),
+	};
+
+	futures::try_join!(
+		garage.version_table.insert(&version),
+		garage.block_ref_table.insert(&block_ref),
+	)?;
+	Ok(())
+}
+
+/// Validate MD5 sum against content-md5 header
+/// and sha256sum against signed content-sha256
+fn ensure_checksum_matches(
+	data_md5sum: &[u8],
+	data_sha256sum: garage_util::data::FixedBytes32,
+	content_md5: Option<&str>,
+	content_sha256: Option<garage_util::data::FixedBytes32>,
+) -> Result<(), Error> {
+	if let Some(expected_sha256) = content_sha256 {
+		if expected_sha256 != data_sha256sum {
+			return Err(Error::BadRequest(format!(
+				"Unable to validate x-amz-content-sha256"
+			)));
 		} else {
-			return None;
+			trace!("Successfully validated x-amz-content-sha256");
 		}
 	}
-
-	Some(parts)
+	if let Some(expected_md5) = content_md5 {
+		if expected_md5.trim_matches('"') != base64::encode(data_md5sum) {
+			return Err(Error::BadRequest(format!("Unable to validate content-md5")));
+		} else {
+			trace!("Successfully validated content-md5");
+		}
+	}
+	Ok(())
 }
author	Alex Auvolat <alex@adnab.me>	2021-04-07 10:00:47 +0200
committer	Alex Auvolat <alex@adnab.me>	2021-04-07 10:00:47 +0200
commit	c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e (patch)
tree	739ce03151cd601a90ed24e23aa0788ea29a29cb /src/api
parent	93a9f9613051385832e22f0c54e9682e814e468c (diff)
download	garage-c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e.tar.gz garage-c3bd672d58d32c8fc3b3225bfc2bfb5330ec726e.zip