Optimize attestation processing (#841)

* Start updating types

* WIP

* Signature hacking

* Existing EF tests passing with fake_crypto

* Updates

* Delete outdated API spec

* The refactor continues

* It compiles

* WIP test fixes

* All release tests passing bar genesis state parsing

* Update and test YamlConfig

* Update to spec v0.10 compatible BLS

* Updates to BLS EF tests

* Add EF test for AggregateVerify

And delete unused hash2curve tests for uncompressed points

* Update EF tests to v0.10.1

* Use optional block root correctly in block proc

* Use genesis fork in deposit domain. All tests pass

* Cargo fmt

* Fast aggregate verify test

* Update REST API docs

* Cargo fmt

* Fix unused import

* Bump spec tags to v0.10.1

* Add `seconds_per_eth1_block` to chainspec

* Update to timestamp based eth1 voting scheme

* Return None from `get_votes_to_consider` if block cache is empty

* Handle overflows in `is_candidate_block`

* Revert to failing tests

* Fix eth1 data sets test

* Choose default vote according to spec

* Fix collect_valid_votes tests

* Fix `get_votes_to_consider` to choose all eligible blocks

* Uncomment winning_vote tests

* Add comments; remove unused code

* Reduce seconds_per_eth1_block for simulation

* Addressed review comments

* Add test for default vote case

* Fix logs

* Remove unused functions

* Meter default eth1 votes

* Fix comments

* Address review comments; remove unused dependency

* Add first attempt at attestation proc. re-write

* Add version 2 of attestation processing

* Minor fixes

* Add validator pubkey cache

* Make get_indexed_attestation take a committee

* Link signature processing into new attn verification

* First working version

* Ensure pubkey cache is updated

* Add more metrics, slight optimizations

* Clone committee cache during attestation processing

* Update shuffling cache during block processing

* Remove old commented-out code

* Fix shuffling cache insert bug

* Used indexed attestation in fork choice

* Restructure attn processing, add metrics

* Add more detailed metrics

* Tidy, fix failing tests

* Fix failing tests, tidy

* Disable/delete two outdated tests

* Tidy

* Add pubkey cache persistence file

* Add more comments

* Integrate persistence file into builder

* Add pubkey cache tests

* Add data_dir to beacon chain builder

* Remove Option in pubkey cache persistence file

* Ensure consistency between datadir/data_dir

* Fix failing network test

* Tidy

* Fix todos

* Add attestation processing tests

* Add another test

* Only run attestation tests in release

* Make attestation tests MainnetEthSpec

* Address Michael's comments

* Remove redundant check

* Fix warning

* Fix failing test

Co-authored-by: Michael Sproul <micsproul@gmail.com>
Co-authored-by: Pawan Dhananjay <pawandhananjay@gmail.com>

beacon_node/network/src/persisted_dht.rs

@@ -1,15 +1,13 @@
-use beacon_chain::BeaconChainTypes;
 use eth2_libp2p::Enr;
 use rlp;
 use std::sync::Arc;
-use store::Store;
-use store::{DBColumn, Error as StoreError, SimpleStoreItem};
-use types::Hash256;
+use store::{DBColumn, Error as StoreError, SimpleStoreItem, Store};
+use types::{EthSpec, Hash256};
 
 /// 32-byte key for accessing the `DhtEnrs`.
 pub const DHT_DB_KEY: &str = "PERSISTEDDHTPERSISTEDDHTPERSISTE";
 
-pub fn load_dht<T: BeaconChainTypes>(store: Arc<T::Store>) -> Vec<Enr> {
+pub fn load_dht<T: Store<E>, E: EthSpec>(store: Arc<T>) -> Vec<Enr> {
     // Load DHT from store
     let key = Hash256::from_slice(&DHT_DB_KEY.as_bytes());
     match store.get(&key) {
@@ -22,8 +20,8 @@ pub fn load_dht<T: BeaconChainTypes>(store: Arc<T::Store>) -> Vec<Enr> {
 }
 
 /// Attempt to persist the ENR's in the DHT to `self.store`.
-pub fn persist_dht<T: BeaconChainTypes>(
-    store: Arc<T::Store>,
+pub fn persist_dht<T: Store<E>, E: EthSpec>(
+    store: Arc<T>,
     enrs: Vec<Enr>,
 ) -> Result<(), store::Error> {
     let key = Hash256::from_slice(&DHT_DB_KEY.as_bytes());