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mem.rs
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mem.rs
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use crate::blobstore::{BlobStore, BlobStoreError, BlobTransactionSidecar};
use parking_lot::RwLock;
use reth_primitives::H256;
use std::{
collections::HashMap,
sync::{atomic::AtomicUsize, Arc},
};
/// An in-memory blob store.
#[derive(Clone, Debug, Default)]
pub struct InMemoryBlobStore {
inner: Arc<InMemoryBlobStoreInner>,
}
#[derive(Debug, Default)]
struct InMemoryBlobStoreInner {
/// Storage for all blob data.
store: RwLock<HashMap<H256, BlobTransactionSidecar>>,
data_size: AtomicUsize,
num_blobs: AtomicUsize,
}
impl InMemoryBlobStoreInner {
fn add_size(&self, add: usize) {
self.data_size.fetch_add(add, std::sync::atomic::Ordering::Relaxed);
}
fn sub_size(&self, sub: usize) {
self.data_size.fetch_sub(sub, std::sync::atomic::Ordering::Relaxed);
}
fn update_size(&self, add: usize, sub: usize) {
if add > sub {
self.add_size(add - sub);
} else {
self.sub_size(sub - add);
}
}
fn update_len(&self, len: usize) {
self.num_blobs.store(len, std::sync::atomic::Ordering::Relaxed);
}
}
impl BlobStore for InMemoryBlobStore {
fn insert(&self, tx: H256, data: BlobTransactionSidecar) -> Result<(), BlobStoreError> {
let mut store = self.inner.store.write();
let (add, sub) = insert_size(&mut store, tx, data);
self.inner.update_size(add, sub);
self.inner.update_len(store.len());
Ok(())
}
fn insert_all(&self, txs: Vec<(H256, BlobTransactionSidecar)>) -> Result<(), BlobStoreError> {
if txs.is_empty() {
return Ok(())
}
let mut store = self.inner.store.write();
let mut total_add = 0;
let mut total_sub = 0;
for (tx, data) in txs {
let (add, sub) = insert_size(&mut store, tx, data);
total_add += add;
total_sub += sub;
}
self.inner.update_size(total_add, total_sub);
self.inner.update_len(store.len());
Ok(())
}
fn delete(&self, tx: H256) -> Result<(), BlobStoreError> {
let mut store = self.inner.store.write();
let sub = remove_size(&mut store, &tx);
self.inner.sub_size(sub);
self.inner.update_len(store.len());
Ok(())
}
fn delete_all(&self, txs: Vec<H256>) -> Result<(), BlobStoreError> {
if txs.is_empty() {
return Ok(())
}
let mut store = self.inner.store.write();
let mut total_sub = 0;
for tx in txs {
total_sub += remove_size(&mut store, &tx);
}
self.inner.sub_size(total_sub);
self.inner.update_len(store.len());
Ok(())
}
// Retrieves the decoded blob data for the given transaction hash.
fn get(&self, tx: H256) -> Result<Option<BlobTransactionSidecar>, BlobStoreError> {
let store = self.inner.store.write();
Ok(store.get(&tx).cloned())
}
fn get_all(
&self,
txs: Vec<H256>,
) -> Result<Vec<(H256, BlobTransactionSidecar)>, BlobStoreError> {
let mut items = Vec::with_capacity(txs.len());
let store = self.inner.store.write();
for tx in txs {
if let Some(item) = store.get(&tx) {
items.push((tx, item.clone()));
}
}
Ok(items)
}
fn data_size_hint(&self) -> Option<usize> {
Some(self.inner.data_size.load(std::sync::atomic::Ordering::Relaxed))
}
fn blobs_len(&self) -> usize {
self.inner.num_blobs.load(std::sync::atomic::Ordering::Relaxed)
}
}
/// Removes the given blob from the store and returns the size of the blob that was removed.
#[inline]
fn remove_size(store: &mut HashMap<H256, BlobTransactionSidecar>, tx: &H256) -> usize {
store.remove(tx).map(|rem| rem.size()).unwrap_or_default()
}
/// Inserts the given blob into the store and returns the size of the blob that was (added,removed)
#[inline]
fn insert_size(
store: &mut HashMap<H256, BlobTransactionSidecar>,
tx: H256,
blob: BlobTransactionSidecar,
) -> (usize, usize) {
let add = blob.size();
let sub = store.insert(tx, blob).map(|rem| rem.size()).unwrap_or_default();
(add, sub)
}