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use std::sync::Arc;
use std::path::PathBuf;
use tokio::fs;
use tokio::prelude::*;
use crate::error::Error;
use crate::server::Garage;
use crate::proto::*;
use crate::data::*;
fn block_dir(garage: &Garage, hash: &Hash) -> PathBuf {
let mut path = garage.system.config.data_dir.clone();
path.push(hex::encode(&hash.as_slice()[0..1]));
path.push(hex::encode(&hash.as_slice()[1..2]));
path
}
pub async fn write_block(garage: Arc<Garage>, hash: &Hash, data: &[u8]) -> Result<Message, Error> {
garage.fs_lock.lock().await;
let mut path = block_dir(&garage, hash);
fs::create_dir_all(&path).await?;
path.push(hex::encode(hash));
if fs::metadata(&path).await.is_ok() {
return Ok(Message::Ok)
}
let mut f = fs::File::create(path).await?;
f.write_all(data).await?;
drop(f);
Ok(Message::Ok)
}
pub async fn read_block(garage: Arc<Garage>, hash: &Hash) -> Result<Message, Error> {
let mut path = block_dir(&garage, hash);
path.push(hex::encode(hash));
let mut f = fs::File::open(path).await?;
let mut data = vec![];
f.read_to_end(&mut data).await?;
Ok(Message::PutBlock(PutBlockMessage{
hash: hash.clone(),
data,
}))
}
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