garage/src/block_ref_table.rs

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900 B
Rust
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2020-04-10 21:11:52 +00:00
use async_trait::async_trait;
use serde::{Deserialize, Serialize};
use std::sync::Arc;
use tokio::sync::RwLock;
use crate::data::*;
use crate::server::Garage;
use crate::table::*;
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct BlockRef {
// Primary key
pub block: Hash,
// Sort key
pub version: UUID,
// Keep track of deleted status
pub deleted: bool,
}
impl Entry<Hash, UUID> for BlockRef {
fn partition_key(&self) -> &Hash {
&self.block
}
fn sort_key(&self) -> &UUID {
&self.version
}
fn merge(&mut self, other: &Self) {
if other.deleted {
self.deleted = true;
}
}
}
pub struct BlockRefTable {
pub garage: RwLock<Option<Arc<Garage>>>,
}
#[async_trait]
impl TableFormat for BlockRefTable {
type P = Hash;
type S = UUID;
type E = BlockRef;
async fn updated(&self, old: Option<&Self::E>, new: &Self::E) {
//unimplemented!()
// TODO
}
}