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-rw-r--r--src/block/block.rs100
-rw-r--r--src/block/manager.rs56
-rw-r--r--src/block/repair.rs4
3 files changed, 85 insertions, 75 deletions
diff --git a/src/block/block.rs b/src/block/block.rs
index 34afea5d..0b14bad4 100644
--- a/src/block/block.rs
+++ b/src/block/block.rs
@@ -13,77 +13,99 @@ pub enum DataBlockHeader {
Compressed,
}
-/// A possibly compressed block of data
-pub enum DataBlock {
- /// Uncompressed data
- Plain(Bytes),
- /// Data compressed with zstd
- Compressed(Bytes),
+#[derive(Debug)]
+pub struct DataBlockElem<T> {
+ header: DataBlockHeader,
+ elem: T,
}
-#[derive(Debug)]
-pub enum DataBlockPath {
- /// Uncompressed data fail
- Plain(PathBuf),
- /// Compressed data fail
- Compressed(PathBuf),
+/// 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>;
+
+impl DataBlockHeader {
+ pub fn is_compressed(&self) -> bool {
+ matches!(self, DataBlockHeader::Compressed)
+ }
}
-impl DataBlock {
+impl<T> DataBlockElem<T> {
+ pub fn from_parts(header: DataBlockHeader, elem: T) -> Self {
+ Self { header, elem }
+ }
+
+ pub fn plain(elem: T) -> Self {
+ Self {
+ header: DataBlockHeader::Plain,
+ elem,
+ }
+ }
+
+ pub fn compressed(elem: T) -> Self {
+ Self {
+ header: DataBlockHeader::Compressed,
+ elem,
+ }
+ }
+
+ pub fn into_parts(self) -> (DataBlockHeader, T) {
+ (self.header, self.elem)
+ }
+
+ pub fn as_parts_ref(&self) -> (DataBlockHeader, &T) {
+ (self.header, &self.elem)
+ }
+
/// Query whether this block is compressed
pub fn is_compressed(&self) -> bool {
- matches!(self, DataBlock::Compressed(_))
+ self.header.is_compressed()
}
+}
+impl DataBlock {
/// 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
+ &self.elem
}
/// 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 {
+ header: DataBlockHeader::Compressed,
+ elem: data_compressed.into(),
+ };
}
}
- DataBlock::Plain(data)
+ DataBlock {
+ header: DataBlockHeader::Plain,
+ elem: 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 64e2ea27..6303248a 100644
--- a/src/block/manager.rs
+++ b/src/block/manager.rs
@@ -547,10 +547,7 @@ 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![];
@@ -558,11 +555,7 @@ 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);
@@ -615,20 +608,20 @@ 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));
}
}
}
@@ -709,24 +702,25 @@ 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,
@@ -778,18 +772,14 @@ 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(())
@@ -799,9 +789,7 @@ 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);
}
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 2024-09-19 23:57:34 +0000