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-rw-r--r--src/block/block.rs115
-rw-r--r--src/block/manager.rs123
-rw-r--r--src/block/repair.rs4
3 files changed, 100 insertions, 142 deletions
diff --git a/src/block/block.rs b/src/block/block.rs
index 20f57aa5..504d11f8 100644
--- a/src/block/block.rs
+++ b/src/block/block.rs
@@ -2,107 +2,98 @@ use std::path::PathBuf;
use bytes::Bytes;
use serde::{Deserialize, Serialize};
-use zstd::stream::{decode_all as zstd_decode, Encoder};
+use zstd::stream::Encoder;
use garage_util::data::*;
use garage_util::error::*;
+use garage_net::stream::ByteStream;
+
#[derive(Debug, Serialize, Deserialize, Copy, Clone)]
pub enum DataBlockHeader {
Plain,
Compressed,
}
-/// A possibly compressed block of data
-pub enum DataBlock {
- /// Uncompressed data
- Plain(Bytes),
- /// Data compressed with zstd
- Compressed(Bytes),
-}
-
#[derive(Debug)]
-pub enum DataBlockPath {
- /// Uncompressed data fail
- Plain(PathBuf),
- /// Compressed data fail
- Compressed(PathBuf),
+pub struct DataBlockElem<T> {
+ header: DataBlockHeader,
+ elem: T,
}
-impl DataBlock {
- /// Query whether this block is compressed
+/// A possibly compressed block of data
+pub type DataBlock = DataBlockElem<Bytes>;
+
+/// A path to a possibly compressed block of data
+pub type DataBlockPath = DataBlockElem<PathBuf>;
+
+/// A stream of possibly compressed block data
+pub type DataBlockStream = DataBlockElem<ByteStream>;
+
+impl DataBlockHeader {
pub fn is_compressed(&self) -> bool {
- matches!(self, DataBlock::Compressed(_))
+ matches!(self, DataBlockHeader::Compressed)
}
+}
- /// Get the inner, possibly compressed buffer. You should probably use [`DataBlock::verify_get`]
- /// instead
- pub fn inner_buffer(&self) -> &[u8] {
- use DataBlock::*;
- let (Plain(ref res) | Compressed(ref res)) = self;
- res
+impl<T> DataBlockElem<T> {
+ pub fn from_parts(header: DataBlockHeader, elem: T) -> Self {
+ Self { header, elem }
}
- /// Get the buffer, possibly decompressing it, and verify it's integrity.
- /// For Plain block, data is compared to hash, for Compressed block, zstd checksumming system
- /// is used instead.
- pub fn verify_get(self, hash: Hash) -> Result<Bytes, Error> {
- match self {
- DataBlock::Plain(data) => {
- if blake2sum(&data) == hash {
- Ok(data)
- } else {
- Err(Error::CorruptData(hash))
- }
- }
- DataBlock::Compressed(data) => zstd_decode(&data[..])
- .map_err(|_| Error::CorruptData(hash))
- .map(Bytes::from),
+ pub fn plain(elem: T) -> Self {
+ Self {
+ header: DataBlockHeader::Plain,
+ elem,
+ }
+ }
+
+ pub fn compressed(elem: T) -> Self {
+ Self {
+ header: DataBlockHeader::Compressed,
+ elem,
}
}
- /// Verify data integrity. Allocate less than [`DataBlock::verify_get`] and don't consume self, but
- /// does not return the buffer content.
+ pub fn into_parts(self) -> (DataBlockHeader, T) {
+ (self.header, self.elem)
+ }
+
+ pub fn as_parts_ref(&self) -> (DataBlockHeader, &T) {
+ (self.header, &self.elem)
+ }
+}
+
+impl DataBlock {
+ /// Verify data integrity. Does not return the buffer content.
pub fn verify(&self, hash: Hash) -> Result<(), Error> {
- match self {
- DataBlock::Plain(data) => {
- if blake2sum(data) == hash {
+ match self.header {
+ DataBlockHeader::Plain => {
+ if blake2sum(&self.elem) == hash {
Ok(())
} else {
Err(Error::CorruptData(hash))
}
}
- DataBlock::Compressed(data) => zstd::stream::copy_decode(&data[..], std::io::sink())
- .map_err(|_| Error::CorruptData(hash)),
+ DataBlockHeader::Compressed => {
+ zstd::stream::copy_decode(&self.elem[..], std::io::sink())
+ .map_err(|_| Error::CorruptData(hash))
+ }
}
}
pub async fn from_buffer(data: Bytes, level: Option<i32>) -> DataBlock {
tokio::task::spawn_blocking(move || {
if let Some(level) = level {
- if let Ok(data) = zstd_encode(&data[..], level) {
- return DataBlock::Compressed(data.into());
+ if let Ok(data_compressed) = zstd_encode(&data[..], level) {
+ return DataBlock::compressed(data_compressed.into());
}
}
- DataBlock::Plain(data)
+ DataBlock::plain(data.into())
})
.await
.unwrap()
}
-
- pub fn into_parts(self) -> (DataBlockHeader, Bytes) {
- match self {
- DataBlock::Plain(data) => (DataBlockHeader::Plain, data),
- DataBlock::Compressed(data) => (DataBlockHeader::Compressed, data),
- }
- }
-
- pub fn from_parts(h: DataBlockHeader, bytes: Bytes) -> Self {
- match h {
- DataBlockHeader::Plain => DataBlock::Plain(bytes),
- DataBlockHeader::Compressed => DataBlock::Compressed(bytes),
- }
- }
}
fn zstd_encode<R: std::io::Read>(mut source: R, level: i32) -> std::io::Result<Vec<u8>> {
diff --git a/src/block/manager.rs b/src/block/manager.rs
index 848d9141..817866f6 100644
--- a/src/block/manager.rs
+++ b/src/block/manager.rs
@@ -1,5 +1,4 @@
use std::path::PathBuf;
-use std::pin::Pin;
use std::sync::Arc;
use std::time::Duration;
@@ -9,8 +8,6 @@ use bytes::Bytes;
use rand::prelude::*;
use serde::{Deserialize, Serialize};
-use futures::Stream;
-use futures_util::stream::StreamExt;
use tokio::fs;
use tokio::io::{AsyncReadExt, AsyncWriteExt, BufReader};
use tokio::sync::{mpsc, Mutex, MutexGuard};
@@ -20,7 +17,7 @@ use opentelemetry::{
Context,
};
-use garage_net::stream::{stream_asyncread, ByteStream};
+use garage_net::stream::{read_stream_to_end, stream_asyncread, ByteStream};
use garage_db as db;
@@ -53,9 +50,6 @@ pub const INLINE_THRESHOLD: usize = 3072;
// to delete the block locally.
pub(crate) const BLOCK_GC_DELAY: Duration = Duration::from_secs(600);
-pub type BlockStream =
- Pin<Box<dyn Stream<Item = Result<Bytes, std::io::Error>> + Send + Sync + 'static>>;
-
/// RPC messages used to share blocks of data between nodes
#[derive(Debug, Serialize, Deserialize)]
pub enum BlockRpc {
@@ -235,11 +229,9 @@ impl BlockManager {
&self,
hash: &Hash,
order_tag: Option<OrderTag>,
- ) -> Result<(DataBlockHeader, ByteStream), Error> {
- self.rpc_get_raw_block_internal(hash, order_tag, |header, stream| async move {
- Ok((header, stream))
- })
- .await
+ ) -> Result<DataBlockStream, Error> {
+ self.rpc_get_raw_block_internal(hash, order_tag, |stream| async move { Ok(stream) })
+ .await
}
/// Ask nodes that might have a (possibly compressed) block for it
@@ -249,10 +241,12 @@ impl BlockManager {
hash: &Hash,
order_tag: Option<OrderTag>,
) -> Result<DataBlock, Error> {
- self.rpc_get_raw_block_internal(hash, order_tag, |header, stream| async move {
+ self.rpc_get_raw_block_internal(hash, order_tag, |block_stream| async move {
+ let (header, stream) = block_stream.into_parts();
read_stream_to_end(stream)
.await
- .map(|data| DataBlock::from_parts(header, data))
+ .err_context("error in block data stream")
+ .map(|data| DataBlock::from_parts(header, data.into_bytes()))
})
.await
}
@@ -264,7 +258,7 @@ impl BlockManager {
f: F,
) -> Result<T, Error>
where
- F: Fn(DataBlockHeader, ByteStream) -> Fut,
+ F: Fn(DataBlockStream) -> Fut,
Fut: futures::Future<Output = Result<T, Error>>,
{
let who = self.replication.read_nodes(hash);
@@ -286,8 +280,8 @@ impl BlockManager {
continue;
}
};
- let (header, stream) = match res.into_parts() {
- (Ok(BlockRpc::PutBlock { hash: _, header }), Some(stream)) => (header, stream),
+ let block_stream = match res.into_parts() {
+ (Ok(BlockRpc::PutBlock { hash: _, header }), Some(stream)) => DataBlockStream::from_parts(header, stream),
(Ok(_), _) => {
debug!("Get block {:?}: node {:?} returned a malformed response", hash, node);
continue;
@@ -297,7 +291,7 @@ impl BlockManager {
continue;
}
};
- match f(header, stream).await {
+ match f(block_stream).await {
Ok(ret) => return Ok(ret),
Err(e) => {
debug!("Get block {:?}: error reading stream from node {:?}: {}", hash, node, e);
@@ -321,14 +315,14 @@ impl BlockManager {
// ---- Public interface ----
- /// Ask nodes that might have a block for it,
- /// return it as a stream
+ /// Ask nodes that might have a block for it, return it as a stream
pub async fn rpc_get_block_streaming(
&self,
hash: &Hash,
order_tag: Option<OrderTag>,
- ) -> Result<BlockStream, Error> {
- let (header, stream) = self.rpc_get_raw_block_streaming(hash, order_tag).await?;
+ ) -> Result<ByteStream, Error> {
+ let block_stream = self.rpc_get_raw_block_streaming(hash, order_tag).await?;
+ let (header, stream) = block_stream.into_parts();
match header {
DataBlockHeader::Plain => Ok(stream),
DataBlockHeader::Compressed => {
@@ -341,15 +335,14 @@ impl BlockManager {
}
}
- /// Ask nodes that might have a block for it
+ /// Ask nodes that might have a block for it, return it as one big Bytes
pub async fn rpc_get_block(
&self,
hash: &Hash,
order_tag: Option<OrderTag>,
) -> Result<Bytes, Error> {
- self.rpc_get_raw_block(hash, order_tag)
- .await?
- .verify_get(*hash)
+ let stream = self.rpc_get_block_streaming(hash, order_tag).await?;
+ Ok(read_stream_to_end(stream).await?.into_bytes())
}
/// Send block to nodes that should have it
@@ -482,7 +475,7 @@ impl BlockManager {
stream: Option<ByteStream>,
) -> Result<(), Error> {
let stream = stream.ok_or_message("missing stream")?;
- let bytes = read_stream_to_end(stream).await?;
+ let bytes = read_stream_to_end(stream).await?.into_bytes();
let data = DataBlock::from_parts(header, bytes);
self.write_block(&hash, &data).await
}
@@ -553,10 +546,7 @@ impl BlockManager {
hash: &Hash,
block_path: &DataBlockPath,
) -> Result<DataBlock, Error> {
- let (path, compressed) = match block_path {
- DataBlockPath::Plain(p) => (p, false),
- DataBlockPath::Compressed(p) => (p, true),
- };
+ let (header, path) = block_path.as_parts_ref();
let mut f = fs::File::open(&path).await?;
let mut data = vec![];
@@ -564,11 +554,7 @@ impl BlockManager {
self.metrics.bytes_read.add(data.len() as u64);
drop(f);
- let data = if compressed {
- DataBlock::Compressed(data.into())
- } else {
- DataBlock::Plain(data.into())
- };
+ let data = DataBlock::from_parts(header, data.into());
if data.verify(*hash).is_err() {
self.metrics.corruption_counter.add(1);
@@ -621,20 +607,20 @@ impl BlockManager {
// first and then a compressed one (as compression may have been
// previously enabled).
if fs::metadata(&path).await.is_ok() {
- return Some(DataBlockPath::Plain(path));
+ return Some(DataBlockPath::plain(path));
}
path.set_extension("zst");
if fs::metadata(&path).await.is_ok() {
- return Some(DataBlockPath::Compressed(path));
+ return Some(DataBlockPath::compressed(path));
}
} else {
path.set_extension("zst");
if fs::metadata(&path).await.is_ok() {
- return Some(DataBlockPath::Compressed(path));
+ return Some(DataBlockPath::compressed(path));
}
path.set_extension("");
if fs::metadata(&path).await.is_ok() {
- return Some(DataBlockPath::Plain(path));
+ return Some(DataBlockPath::plain(path));
}
}
}
@@ -704,8 +690,8 @@ impl BlockManagerLocked {
mgr: &BlockManager,
existing_path: Option<DataBlockPath>,
) -> Result<(), Error> {
- let compressed = data.is_compressed();
- let data = data.inner_buffer();
+ let (header, data) = data.as_parts_ref();
+ let compressed = header.is_compressed();
let directory = mgr.data_layout.load().primary_block_dir(hash);
@@ -715,24 +701,25 @@ impl BlockManagerLocked {
tgt_path.set_extension("zst");
}
- let to_delete = match (existing_path, compressed) {
+ let existing_info = existing_path.map(|x| x.into_parts());
+ let to_delete = match (existing_info, compressed) {
// If the block is stored in the wrong directory,
// write it again at the correct path and delete the old path
- (Some(DataBlockPath::Plain(p)), false) if p != tgt_path => Some(p),
- (Some(DataBlockPath::Compressed(p)), true) if p != tgt_path => Some(p),
+ (Some((DataBlockHeader::Plain, p)), false) if p != tgt_path => Some(p),
+ (Some((DataBlockHeader::Compressed, p)), true) if p != tgt_path => Some(p),
// If the block is already stored not compressed but we have a compressed
// copy, write the compressed copy and delete the uncompressed one
- (Some(DataBlockPath::Plain(plain_path)), true) => Some(plain_path),
+ (Some((DataBlockHeader::Plain, plain_path)), true) => Some(plain_path),
// If the block is already stored compressed,
// keep the stored copy, we have nothing to do
- (Some(DataBlockPath::Compressed(_)), _) => return Ok(()),
+ (Some((DataBlockHeader::Compressed, _)), _) => return Ok(()),
// If the block is already stored not compressed,
// and we don't have a compressed copy either,
// keep the stored copy, we have nothing to do
- (Some(DataBlockPath::Plain(_)), false) => return Ok(()),
+ (Some((DataBlockHeader::Plain, _)), false) => return Ok(()),
// If the block isn't stored already, just store what is given to us
(None, _) => None,
@@ -784,18 +771,14 @@ impl BlockManagerLocked {
}
async fn move_block_to_corrupted(&self, block_path: &DataBlockPath) -> Result<(), Error> {
- let (path, path2) = match block_path {
- DataBlockPath::Plain(p) => {
- let mut p2 = p.clone();
- p2.set_extension("corrupted");
- (p, p2)
- }
- DataBlockPath::Compressed(p) => {
- let mut p2 = p.clone();
- p2.set_extension("zst.corrupted");
- (p, p2)
- }
- };
+ let (header, path) = block_path.as_parts_ref();
+
+ let mut path2 = path.clone();
+ if header.is_compressed() {
+ path2.set_extension("zst.corrupted");
+ } else {
+ path2.set_extension("corrupted");
+ }
fs::rename(path, path2).await?;
Ok(())
@@ -805,9 +788,7 @@ impl BlockManagerLocked {
let rc = mgr.rc.get_block_rc(hash)?;
if rc.is_deletable() {
while let Some(path) = mgr.find_block(hash).await {
- let path = match path {
- DataBlockPath::Plain(p) | DataBlockPath::Compressed(p) => p,
- };
+ let (_header, path) = path.as_parts_ref();
fs::remove_file(path).await?;
mgr.metrics.delete_counter.add(1);
}
@@ -824,24 +805,10 @@ impl BlockManagerLocked {
let data = mgr.read_block_from(hash, &wrong_path).await?;
self.write_block_inner(hash, &data, mgr, Some(wrong_path))
.await?;
- Ok(data.inner_buffer().len())
+ Ok(data.as_parts_ref().1.len())
}
}
-async fn read_stream_to_end(mut stream: ByteStream) -> Result<Bytes, Error> {
- let mut parts: Vec<Bytes> = vec![];
- while let Some(part) = stream.next().await {
- parts.push(part.ok_or_message("error in stream")?);
- }
-
- Ok(parts
- .iter()
- .map(|x| &x[..])
- .collect::<Vec<_>>()
- .concat()
- .into())
-}
-
struct DeleteOnDrop(Option<PathBuf>);
impl DeleteOnDrop {
diff --git a/src/block/repair.rs b/src/block/repair.rs
index 77ee0d14..2c8acbc9 100644
--- a/src/block/repair.rs
+++ b/src/block/repair.rs
@@ -584,8 +584,8 @@ impl Worker for RebalanceWorker {
let prim_loc = self.manager.data_layout.load().primary_block_dir(&hash);
if path.ancestors().all(|x| x != prim_loc) {
let block_path = match path.extension() {
- None => DataBlockPath::Plain(path.clone()),
- Some(x) if x.to_str() == Some("zst") => DataBlockPath::Compressed(path.clone()),
+ None => DataBlockPath::plain(path.clone()),
+ Some(x) if x.to_str() == Some("zst") => DataBlockPath::compressed(path.clone()),
_ => {
warn!("not rebalancing file: {}", path.to_string_lossy());
return Ok(WorkerState::Busy);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 21:29:01 +0000