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Merge pull request 'Compress with zstd' (#44) from trinity-1686a/garage:zstd-block into main

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Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/44
This commit is contained in:
Alex 2021-04-14 23:27:33 +02:00
commit 307858bf0a
5 changed files with 200 additions and 45 deletions
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42
Cargo.lock generated
View file

@ -95,6 +95,9 @@ name = "cc"
version = "1.0.67"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e3c69b077ad434294d3ce9f1f6143a2a4b89a8a2d54ef813d85003a4fd1137fd"
dependencies = [
"jobserver",
]
[[package]]
name = "cfg-if"
@ -429,6 +432,7 @@ dependencies = [
"serde_bytes",
"sled",
"tokio",
"zstd",
]
[[package]]
@ -779,6 +783,15 @@ version = "0.4.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
[[package]]
name = "jobserver"
version = "0.1.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5c71313ebb9439f74b00d9d2dcec36440beaf57a6aa0623068441dd7cd81a7f2"
dependencies = [
"libc",
]
[[package]]
name = "js-sys"
version = "0.3.49"
@ -1769,3 +1782,32 @@ name = "xxhash-rust"
version = "0.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e575e15bedf6e57b5c2d763ffc6c3c760143466cbd09d762d539680ab5992ded"
[[package]]
name = "zstd"
version = "0.6.1+zstd.1.4.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5de55e77f798f205d8561b8fe2ef57abfb6e0ff2abe7fd3c089e119cdb5631a3"
dependencies = [
"zstd-safe",
]
[[package]]
name = "zstd-safe"
version = "3.0.1+zstd.1.4.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1387cabcd938127b30ce78c4bf00b30387dddf704e3f0881dbc4ff62b5566f8c"
dependencies = [
"libc",
"zstd-sys",
]
[[package]]
name = "zstd-sys"
version = "1.4.20+zstd.1.4.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ebd5b733d7cf2d9447e2c3e76a5589b4f5e5ae065c22a2bc0b023cbc331b6c8e"
dependencies = [
"cc",
"libc",
]

20
script/test-smoke.sh
View file

@ -23,39 +23,43 @@ dd if=/dev/urandom of=/tmp/garage.1.rnd bs=1k count=2 # < INLINE_THRESHOLD = 307
dd if=/dev/urandom of=/tmp/garage.2.rnd bs=1M count=5
dd if=/dev/urandom of=/tmp/garage.3.rnd bs=1M count=10
dd if=/dev/urandom bs=1k count=2 | base64 -w0 > /tmp/garage.1.b64
dd if=/dev/urandom bs=1M count=5 | base64 -w0 > /tmp/garage.2.b64
dd if=/dev/urandom bs=1M count=10 | base64 -w0 > /tmp/garage.3.b64
echo "s3 api testing..."
for idx in $(seq 1 3); do
for idx in {1,2,3}.{rnd,b64}; do
# AWS sends
awsgrg cp /tmp/garage.$idx.rnd s3://eprouvette/garage.$idx.aws
awsgrg cp /tmp/garage.$idx s3://eprouvette/garage.$idx.aws
awsgrg ls s3://eprouvette
awsgrg cp s3://eprouvette/garage.$idx.aws /tmp/garage.$idx.dl
diff /tmp/garage.$idx.rnd /tmp/garage.$idx.dl
diff /tmp/garage.$idx /tmp/garage.$idx.dl
rm /tmp/garage.$idx.dl
s3grg get s3://eprouvette/garage.$idx.aws /tmp/garage.$idx.dl
diff /tmp/garage.$idx.rnd /tmp/garage.$idx.dl
diff /tmp/garage.$idx /tmp/garage.$idx.dl
rm /tmp/garage.$idx.dl
awsgrg rm s3://eprouvette/garage.$idx.aws
# S3CMD sends
s3grg put /tmp/garage.$idx.rnd s3://eprouvette/garage.$idx.s3cmd
s3grg put /tmp/garage.$idx s3://eprouvette/garage.$idx.s3cmd
s3grg ls s3://eprouvette
s3grg get s3://eprouvette/garage.$idx.s3cmd /tmp/garage.$idx.dl
diff /tmp/garage.$idx.rnd /tmp/garage.$idx.dl
diff /tmp/garage.$idx /tmp/garage.$idx.dl
rm /tmp/garage.$idx.dl
awsgrg cp s3://eprouvette/garage.$idx.s3cmd /tmp/garage.$idx.dl
diff /tmp/garage.$idx.rnd /tmp/garage.$idx.dl
diff /tmp/garage.$idx /tmp/garage.$idx.dl
rm /tmp/garage.$idx.dl
s3grg rm s3://eprouvette/garage.$idx.s3cmd
done
rm /tmp/garage.{1,2,3}.rnd
rm /tmp/garage.{1,2,3}.{rnd,b64}
echo "website testing"
echo "<h1>hello world</h1>" > /tmp/garage-index.html

2
src/model/Cargo.toml
View file

@ -21,8 +21,8 @@ arc-swap = "1.0"
hex = "0.4"
log = "0.4"
rand = "0.8"
sled = "0.34"
zstd = "0.6.1"
rmp-serde = "0.15"
serde = { version = "1.0", default-features = false, features = ["derive", "rc"] }

177
src/model/block.rs
View file

@ -9,6 +9,7 @@ use serde::{Deserialize, Serialize};
use tokio::fs;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::sync::{watch, Mutex, Notify};
use zstd::stream::{decode_all as zstd_decode, Encoder};
use garage_util::data::*;
use garage_util::error::Error;
@ -42,22 +43,37 @@ pub enum Message {
GetBlock(Hash),
/// Message to send a block of data, either because requested, of for first delivery of new
/// block
PutBlock(PutBlockMessage),
PutBlock {
hash: Hash,
data: BlockData,
},
/// Ask other node if they should have this block, but don't actually have it
NeedBlockQuery(Hash),
/// Response : whether the node do require that block
NeedBlockReply(bool),
}
/// Structure used to send a block
/// A possibly compressed block of data
#[derive(Debug, Serialize, Deserialize)]
pub struct PutBlockMessage {
/// Hash of the block
pub hash: Hash,
pub enum BlockData {
Plain(#[serde(with = "serde_bytes")] Vec<u8>),
Compressed(#[serde(with = "serde_bytes")] Vec<u8>),
}
/// Content of the block
#[serde(with = "serde_bytes")]
pub data: Vec<u8>,
impl BlockData {
pub fn is_compressed(&self) -> bool {
match self {
BlockData::Plain(_) => false,
BlockData::Compressed(_) => true,
}
}
pub fn buffer(&self) -> &Vec<u8> {
match self {
BlockData::Plain(b) => b,
BlockData::Compressed(b) => b,
}
}
}
impl RpcMessage for Message {}
@ -134,7 +150,7 @@ impl BlockManager {
async fn handle(self: Arc<Self>, msg: &Message) -> Result<Message, Error> {
match msg {
Message::PutBlock(m) => self.write_block(&m.hash, &m.data).await,
Message::PutBlock { hash, data } => self.write_block(&hash, &data).await,
Message::GetBlock(h) => self.read_block(h).await,
Message::NeedBlockQuery(h) => self.need_block(h).await.map(Message::NeedBlockReply),
_ => Err(Error::BadRPC(format!("Unexpected RPC message"))),
@ -157,54 +173,96 @@ impl BlockManager {
}
/// Write a block to disk
async fn write_block(&self, hash: &Hash, data: &[u8]) -> Result<Message, Error> {
pub async fn write_block(&self, hash: &Hash, data: &BlockData) -> Result<Message, Error> {
let mut path = self.block_dir(hash);
let _lock = self.data_dir_lock.lock().await;
let mut path = self.block_dir(hash);
fs::create_dir_all(&path).await?;
let clean_plain = match self.is_block_compressed(hash).await {
Ok(true) => return Ok(Message::Ok),
Ok(false) if !data.is_compressed() => return Ok(Message::Ok), // we have a plain block, and the provided block is not compressed either
Ok(false) => true,
Err(_) => false,
};
fs::create_dir_all(&path).await?;
path.push(hex::encode(hash));
if fs::metadata(&path).await.is_ok() {
return Ok(Message::Ok);
if data.is_compressed() {
path.set_extension("zst");
}
let mut f = fs::File::create(path).await?;
f.write_all(data).await?;
let buffer = data.buffer();
let mut f = fs::File::create(path.clone()).await?;
f.write_all(&buffer).await?;
if clean_plain {
path.set_extension("");
fs::remove_file(path).await?;
}
drop(f);
Ok(Message::Ok)
}
/// Read block from disk, verifying it's integrity
async fn read_block(&self, hash: &Hash) -> Result<Message, Error> {
let path = self.block_path(hash);
pub async fn read_block(&self, hash: &Hash) -> Result<Message, Error> {
let mut path = self.block_path(hash);
let mut f = match fs::File::open(&path).await {
Ok(f) => f,
Err(e) => {
let mut data = vec![];
let block = match self.is_block_compressed(hash).await {
Ok(false) => {
let f = fs::File::open(&path).await;
f.map(|f| (f, false)).map_err(Into::into)
}
Ok(true) => {
path.set_extension("zst");
let f = fs::File::open(&path).await;
f.map(|f| (f, true)).map_err(Into::into)
}
Err(e) => Err(e),
};
let (mut f, compressed) = match block {
Ok(ok) => ok,
e => {
// Not found but maybe we should have had it ??
self.put_to_resync(hash, Duration::from_millis(0))?;
return Err(Into::into(e));
e?
}
};
let mut data = vec![];
f.read_to_end(&mut data).await?;
drop(f);
if blake2sum(&data[..]) != *hash {
let sum_ok = if compressed {
zstd_check_checksum(&data[..])
} else {
blake2sum(&data[..]) == *hash
};
if !sum_ok {
let _lock = self.data_dir_lock.lock().await;
warn!(
"Block {:?} is corrupted. Renaming to .corrupted and resyncing.",
hash
);
let mut path2 = path.clone();
path2.set_extension(".corrupted");
path2.set_extension("corrupted");
fs::rename(path, path2).await?;
self.put_to_resync(&hash, Duration::from_millis(0))?;
return Err(Error::CorruptData(*hash));
}
Ok(Message::PutBlock(PutBlockMessage { hash: *hash, data }))
if compressed {
Ok(Message::PutBlock {
hash: *hash,
data: BlockData::Compressed(data),
})
} else {
Ok(Message::PutBlock {
hash: *hash,
data: BlockData::Plain(data),
})
}
}
/// Check if this node should have a block, but don't actually have it
@ -215,14 +273,23 @@ impl BlockManager {
.map(|x| u64_from_be_bytes(x) > 0)
.unwrap_or(false);
if needed {
let path = self.block_path(hash);
let exists = fs::metadata(&path).await.is_ok();
let exists = self.is_block_compressed(hash).await.is_ok();
Ok(!exists)
} else {
Ok(false)
}
}
async fn is_block_compressed(&self, hash: &Hash) -> Result<bool, Error> {
let mut path = self.block_path(hash);
path.set_extension("zst");
if fs::metadata(&path).await.is_ok() {
return Ok(true);
}
path.set_extension("");
fs::metadata(&path).await.map(|_| false).map_err(Into::into)
}
fn block_dir(&self, hash: &Hash) -> PathBuf {
let mut path = self.data_dir.clone();
path.push(hex::encode(&hash.as_slice()[0..1]));
@ -323,7 +390,7 @@ impl BlockManager {
let path = self.block_path(hash);
let exists = fs::metadata(&path).await.is_ok();
let exists = self.is_block_compressed(hash).await.is_ok();
let needed = self
.rc
.get(hash.as_ref())?
@ -402,15 +469,14 @@ impl BlockManager {
// TODO find a way to not do this if they are sending it to us
// Let's suppose this isn't an issue for now with the BLOCK_RW_TIMEOUT delay
// between the RC being incremented and this part being called.
let block_data = self.rpc_get_block(&hash).await?;
self.write_block(hash, &block_data[..]).await?;
let block = self.rpc_get_raw_block(&hash).await?;
self.write_block(hash, &block).await?;
}
Ok(())
}
/// Ask nodes that might have a block for it
pub async fn rpc_get_block(&self, hash: &Hash) -> Result<Vec<u8>, Error> {
async fn rpc_get_raw_block(&self, hash: &Hash) -> Result<BlockData, Error> {
let who = self.replication.read_nodes(&hash);
let resps = self
.rpc_client
@ -424,8 +490,9 @@ impl BlockManager {
.await?;
for resp in resps {
if let Message::PutBlock(msg) = resp {
return Ok(msg.data);
match resp {
Message::PutBlock { data, .. } => return Ok(data),
_ => {}
}
}
Err(Error::Message(format!(
@ -434,13 +501,38 @@ impl BlockManager {
)))
}
/// Ask nodes that might have a block for it
pub async fn rpc_get_block(&self, hash: &Hash) -> Result<Vec<u8>, Error> {
self.rpc_get_raw_block(hash)
.await
.and_then(|data| match data {
BlockData::Plain(data) => Ok(data),
BlockData::Compressed(data) => {
zstd_decode(&data[..]).map_err(|_| Error::CorruptData(*hash))
}
})
}
/// Send block to nodes that should have it
pub async fn rpc_put_block(&self, hash: Hash, data: Vec<u8>) -> Result<(), Error> {
let garage = self.garage.load_full().unwrap();
let compressed = zstd_encode(&data[..], garage.config.compression_level);
let message = if compressed.is_ok() && compressed.as_ref().unwrap().len() < data.len() {
Message::PutBlock {
hash,
data: BlockData::Compressed(compressed.unwrap()),
}
} else {
Message::PutBlock {
hash,
data: BlockData::Plain(data),
}
};
let who = self.replication.write_nodes(&hash);
self.rpc_client
.try_call_many(
&who[..],
Message::PutBlock(PutBlockMessage { hash, data }),
message,
RequestStrategy::with_quorum(self.replication.write_quorum())
.with_timeout(BLOCK_RW_TIMEOUT),
)
@ -537,3 +629,16 @@ fn u64_from_be_bytes<T: AsRef<[u8]>>(bytes: T) -> u64 {
x8.copy_from_slice(bytes.as_ref());
u64::from_be_bytes(x8)
}
fn zstd_check_checksum<R: std::io::Read>(source: R) -> bool {
zstd::stream::copy_decode(source, std::io::sink()).is_ok()
}
fn zstd_encode<R: std::io::Read>(mut source: R, level: i32) -> std::io::Result<Vec<u8>> {
let mut result = Vec::<u8>::new();
let mut encoder = Encoder::new(&mut result, level)?;
encoder.include_checksum(true)?;
std::io::copy(&mut source, &mut encoder)?;
encoder.finish()?;
Ok(result)
}

4
src/util/config.rs
View file

@ -45,6 +45,10 @@ pub struct Config {
#[serde(default = "default_replication_factor")]
pub data_replication_factor: usize,
/// Zstd compression level used on data blocks
#[serde(default)]
pub compression_level: i32,
/// Configuration for RPC TLS
pub rpc_tls: Option<TlsConfig>,