v0.12 fork choice update (#1229)

* Incomplete scraps

* Add progress on new fork choice impl

* Further progress

* First complete compiling version

* Remove chain reference

* Add new lmd_ghost crate

* Start integrating into beacon chain

* Update `milagro_bls` to new release (#1183)

* Update milagro_bls to new release

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Tidy up fake cryptos

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* move SecretHash to bls and put plaintext back

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Update state processing for v0.12

* Fix EF test runners for v0.12

* Fix some tests

* Fix broken attestation verification test

* More test fixes

* Rough beacon chain impl working

* Remove fork_choice_2

* Remove checkpoint manager

* Half finished ssz impl

* Add missed file

* Add persistence

* Tidy, fix some compile errors

* Remove RwLock from ProtoArrayForkChoice

* Fix store-based compile errors

* Add comments, tidy

* Move function out of ForkChoice struct

* Start testing

* More testing

* Fix compile error

* Tidy beacon_chain::fork_choice

* Queue attestations from the current slot

* Allow fork choice to handle prior-to-genesis start

* Improve error granularity

* Test attestation dequeuing

* Process attestations during block

* Store target root in fork choice

* Move fork choice verification into new crate

* Update tests

* Consensus updates for v0.12 (#1228)

* Update state processing for v0.12

* Fix EF test runners for v0.12

* Fix some tests

* Fix broken attestation verification test

* More test fixes

* Fix typo found in review

* Add `Block` struct to ProtoArray

* Start fixing get_ancestor

* Add rough progress on testing

* Get fork choice tests working

* Progress with testing

* Fix partialeq impl

* Move slot clock from fc_store

* Improve testing

* Add testing for best justified

* Add clone back to SystemTimeSlotClock

* Add balances test

* Start adding balances cache again

* Wire-in balances cache

* Improve tests

* Remove commented-out tests

* Remove beacon_chain::ForkChoice

* Rename crates

* Update wider codebase to new fork_choice layout

* Move advance_slot in test harness

* Tidy ForkChoice::update_time

* Fix verification tests

* Fix compile error with iter::once

* Fix fork choice tests

* Ensure block attestations are processed

* Fix failing beacon_chain tests

* Add first invalid block check

* Add finalized block check

* Progress with testing, new store builder

* Add fixes to get_ancestor

* Fix old genesis justification test

* Fix remaining fork choice tests

* Change root iteration method

* Move on_verified_block

* Remove unused method

* Start adding attestation verification tests

* Add invalid ffg target test

* Add target epoch test

* Add queued attestation test

* Remove old fork choice verification tests

* Tidy, add test

* Move fork choice lock drop

* Rename BeaconForkChoiceStore

* Add comments, tidy BeaconForkChoiceStore

* Update metrics, rename fork_choice_store.rs

* Remove genesis_block_root from ForkChoice

* Tidy

* Update fork_choice comments

* Tidy, add comments

* Tidy, simplify ForkChoice, fix compile issue

* Tidy, removed dead file

* Increase http request timeout

* Fix failing rest_api test

* Set HTTP timeout back to 5s

* Apply fix to get_ancestor

* Address Michael's comments

* Fix typo

* Revert "Fix broken attestation verification test"

This reverts commit 722cdc903b.

Co-authored-by: Kirk Baird <baird.k@outlook.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>

beacon_node/network/src/sync/manager.rs

@@ -269,7 +269,12 @@ impl<T: BeaconChainTypes> SyncManager<T> {
                 // consider it synced (it can be the case that the peer seems ahead of us, but we
                 // reject its chain).
 
-                if self.chain.fork_choice.contains_block(&remote.head_root) {
+                if self
+                    .chain
+                    .fork_choice
+                    .read()
+                    .contains_block(&remote.head_root)
+                {
                     self.synced_peer(&peer_id, remote);
                     // notify the range sync that a peer has been added
                     self.range_sync.fully_synced_peer_found();

beacon_node/network/src/sync/range_sync/chain_collection.rs

@@ -455,6 +455,7 @@ impl<T: BeaconChainTypes> ChainCollection<T> {
             if chain.target_head_slot <= local_finalized_slot
                 || beacon_chain
                     .fork_choice
+                    .read()
                     .contains_block(&chain.target_head_root)
             {
                 debug!(log_ref, "Purging out of finalized chain"; "start_epoch" => chain.start_epoch, "end_slot" => chain.target_head_slot);
@@ -468,6 +469,7 @@ impl<T: BeaconChainTypes> ChainCollection<T> {
             if chain.target_head_slot <= local_finalized_slot
                 || beacon_chain
                     .fork_choice
+                    .read()
                     .contains_block(&chain.target_head_root)
             {
                 debug!(log_ref, "Purging out of date head chain"; "start_epoch" => chain.start_epoch, "end_slot" => chain.target_head_slot);

beacon_node/network/src/sync/range_sync/sync_type.rs

@@ -30,6 +30,7 @@ impl RangeSyncType {
         if remote_info.finalized_epoch > local_info.finalized_epoch
             && !chain
                 .fork_choice
+                .read()
                 .contains_block(&remote_info.finalized_root)
         {
             RangeSyncType::Finalized