Trait ipfs_sqlite_block_store::cache::CacheTracker

pub trait CacheTracker: Debug + Send + Sync {
    fn blocks_accessed(&self, blocks: Vec<BlockInfo>) { ... }
    fn blocks_written(&self, blocks: Vec<WriteInfo>) { ... }
    fn blocks_deleted(&self, blocks: Vec<BlockInfo>) { ... }
    fn sort_ids(&self, ids: &mut [i64]) { ... }
    fn retain_ids(&self, ids: &[i64]) { ... }
}

tracks block reads and writes to provide info about which blocks to evict from the LRU cache

Provided methods

fn blocks_accessed(&self, blocks: Vec<BlockInfo>)

called whenever blocks were accessed

note that this method will be called very frequently, on every block access. it is fire and forget, so it is perfectly ok to offload the writing to another thread.

fn blocks_written(&self, blocks: Vec<WriteInfo>)

called whenever blocks were written

note that this method will be called frequently, on every block write. it is fire and forget, so it is perfectly ok to offload the writing to another thread.

fn blocks_deleted(&self, blocks: Vec<BlockInfo>)

called whenever blocks have been deleted by gc.

fn sort_ids(&self, ids: &mut [i64])

sort ids by importance. More important ids should go to the end.

this will be called from inside gc

fn retain_ids(&self, ids: &[i64])

notification that only these ids should be retained

this will be called once during startup

Implementations on Foreign Types

impl CacheTracker for Arc<dyn CacheTracker>

fn blocks_accessed(&self, blocks: Vec<BlockInfo>)

fn blocks_written(&self, blocks: Vec<WriteInfo>)

fn sort_ids(&self, ids: &mut [i64])

fn blocks_deleted(&self, blocks: Vec<BlockInfo>)

fn retain_ids(&self, ids: &[i64])

Implementors

impl CacheTracker for NoopCacheTracker

impl CacheTracker for SortByIdCacheTracker

fn sort_ids(&self, ids: &mut [i64])

impl<F> CacheTracker for SqliteCacheTracker<F> where
    F: Fn(i64, BlockInfo) -> Option<i64> + Send + Sync, 

fn blocks_accessed(&self, blocks: Vec<BlockInfo>)

fn blocks_deleted(&self, blocks: Vec<BlockInfo>)

fn retain_ids(&self, ids: &[i64])

fn sort_ids(&self, ids: &mut [i64])

impl<S, T> CacheTracker for AsyncCacheTracker<S, T> where
    S: Spawner,
    T: CacheTracker + 'static, 

fn blocks_accessed(&self, blocks: Vec<BlockInfo>)

fn blocks_written(&self, blocks: Vec<WriteInfo>)

fn blocks_deleted(&self, blocks: Vec<BlockInfo>)

fn retain_ids(&self, ids: &[i64])

fn sort_ids(&self, ids: &mut [i64])

impl<T, F> CacheTracker for InMemCacheTracker<T, F> where
    T: Ord + Clone + Debug + Send + Sync,
    F: Fn(Duration, BlockInfo) -> Option<T> + Send + Sync, 

fn blocks_accessed(&self, blocks: Vec<BlockInfo>)

called whenever blocks were accessed

fn blocks_deleted(&self, blocks: Vec<BlockInfo>)

notification that these ids no longer have to be tracked

fn retain_ids(&self, ids: &[i64])

notification that only these ids should be retained

fn sort_ids(&self, ids: &mut [i64])

sort ids by importance. More important ids should go to the end.