use BlockData instead of Vec+bool

This commit is contained in:
Trinity Pointard 2021-04-06 17:51:19 +02:00
parent de8e47435f
commit 01c623e391

View file

@ -43,23 +43,18 @@ pub enum Message {
GetBlock(Hash),
/// Message to send a block of data, either because requested, of for first delivery of new
/// block
PutBlock(PutBlockMessage),
PutCompressedBlock(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,
/// Content of the block
#[serde(with = "serde_bytes")]
pub data: Vec<u8>,
pub enum BlockData {
Plain(#[serde(with = "serde_bytes")] Vec<u8>),
Compressed(#[serde(with = "serde_bytes")] Vec<u8>),
}
impl RpcMessage for Message {}
@ -136,8 +131,7 @@ 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, false).await,
Message::PutCompressedBlock(m) => self.write_block(&m.hash, &m.data, true).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"))),
@ -160,12 +154,7 @@ impl BlockManager {
}
/// Write a block to disk
pub async fn write_block(
&self,
hash: &Hash,
data: &[u8],
compressed: bool,
) -> Result<Message, Error> {
pub async fn write_block(&self, hash: &Hash, data: &BlockData) -> Result<Message, Error> {
if self.is_block_compressed(hash).await.is_ok() {
return Ok(Message::Ok);
}
@ -175,12 +164,16 @@ impl BlockManager {
fs::create_dir_all(&path).await?;
path.push(hex::encode(hash));
if compressed {
path.set_extension("zst");
}
let buffer = match data {
BlockData::Plain(b) => b,
BlockData::Compressed(b) => {
path.set_extension("zst");
b
}
};
let mut f = fs::File::create(path).await?;
f.write_all(data).await?;
f.write_all(&buffer).await?;
drop(f);
Ok(Message::Ok)
@ -235,12 +228,15 @@ impl BlockManager {
}
if compressed {
Ok(Message::PutCompressedBlock(PutBlockMessage {
Ok(Message::PutBlock {
hash: *hash,
data,
}))
data: BlockData::Compressed(data),
})
} else {
Ok(Message::PutBlock(PutBlockMessage { hash: *hash, data }))
Ok(Message::PutBlock {
hash: *hash,
data: BlockData::Plain(data),
})
}
}
@ -447,14 +443,14 @@ 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, compressed) = self.rpc_get_raw_block(&hash).await?;
self.write_block(hash, &block_data[..], compressed).await?;
let block = self.rpc_get_raw_block(&hash).await?;
self.write_block(hash, &block).await?;
}
Ok(())
}
async fn rpc_get_raw_block(&self, hash: &Hash) -> Result<(Vec<u8>, bool), 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
@ -469,8 +465,7 @@ impl BlockManager {
for resp in resps {
match resp {
Message::PutBlock(msg) => return Ok((msg.data, false)),
Message::PutCompressedBlock(msg) => return Ok((msg.data, true)),
Message::PutBlock { data, .. } => return Ok(data),
_ => {}
}
}
@ -484,11 +479,10 @@ impl BlockManager {
pub async fn rpc_get_block(&self, hash: &Hash) -> Result<Vec<u8>, Error> {
self.rpc_get_raw_block(hash)
.await
.and_then(|(data, compressed)| {
if compressed {
.and_then(|data| match data {
BlockData::Plain(data) => Ok(data),
BlockData::Compressed(data) => {
zstd_decode(&data[..]).map_err(|_| Error::CorruptData(*hash))
} else {
Ok(data)
}
})
}
@ -498,12 +492,15 @@ impl BlockManager {
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::PutCompressedBlock(PutBlockMessage {
Message::PutBlock {
hash,
data: compressed.unwrap(),
})
data: BlockData::Compressed(compressed.unwrap()),
}
} else {
Message::PutBlock(PutBlockMessage { hash, data })
Message::PutBlock {
hash,
data: BlockData::Plain(data),
}
};
let who = self.replication.write_nodes(&hash);
self.rpc_client