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Add error handling to iterators (#1243)

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* Add error handling to iterators

* Review feedback

* Leverage itertools::process_results() in few places
This commit is contained in:
Adam Szkoda
2020-06-10 01:55:44 +02:00
committed by GitHub
parent ed4b3ef471
commit 7f036a6e95
17 changed files with 193 additions and 119 deletions
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6
beacon_node/store/src/lib.rs
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@@ -13,7 +13,7 @@ extern crate lazy_static;
pub mod chunked_iter;
pub mod chunked_vector;
pub mod config;
mod errors;
pub mod errors;
mod forwards_iter;
pub mod hot_cold_store;
mod impls;
@@ -99,7 +99,7 @@ pub trait ItemStore<E: EthSpec>: KeyValueStore<E> + Sync + Send + Sized + 'stati
/// columns. A simple column implementation might involve prefixing a key with some bytes unique to
/// each column.
pub trait Store<E: EthSpec>: Sync + Send + Sized + 'static {
type ForwardsBlockRootsIterator: Iterator<Item = (Hash256, Slot)>;
type ForwardsBlockRootsIterator: Iterator<Item = Result<(Hash256, Slot), Error>>;
/// Store a block in the store.
fn put_block(&self, block_root: &Hash256, block: SignedBeaconBlock<E>) -> Result<(), Error>;
@@ -146,7 +146,7 @@ pub trait Store<E: EthSpec>: Sync + Send + Sized + 'static {
end_state: BeaconState<E>,
end_block_root: Hash256,
spec: &ChainSpec,
) -> Self::ForwardsBlockRootsIterator;
) -> Result<Self::ForwardsBlockRootsIterator, Error>;
fn load_epoch_boundary_state(
&self,