Stable futures (#879)

* Port eth1 lib to use stable futures

* Port eth1_test_rig to stable futures

* Port eth1 tests to stable futures

* Port genesis service to stable futures

* Port genesis tests to stable futures

* Port beacon_chain to stable futures

* Port lcli to stable futures

* Fix eth1_test_rig (#1014)

* Fix lcli

* Port timer to stable futures

* Fix timer

* Port websocket_server to stable futures

* Port notifier to stable futures

* Add TODOS

* Update hashmap hashset to stable futures

* Adds panic test to hashset delay

* Port remote_beacon_node to stable futures

* Fix lcli merge conflicts

* Non rpc stuff compiles

* protocol.rs compiles

* Port websockets, timer and notifier to stable futures (#1035)

* Fix lcli

* Port timer to stable futures

* Fix timer

* Port websocket_server to stable futures

* Port notifier to stable futures

* Add TODOS

* Port remote_beacon_node to stable futures

* Partial eth2-libp2p stable future upgrade

* Finished first round of fighting RPC types

* Further progress towards porting eth2-libp2p adds caching to discovery

* Update behaviour

* RPC handler to stable futures

* Update RPC to master libp2p

* Network service additions

* Fix the fallback transport construction (#1102)

* Correct warning

* Remove hashmap delay

* Compiling version of eth2-libp2p

* Update all crates versions

* Fix conversion function and add tests (#1113)

* Port validator_client to stable futures (#1114)

* Add PH & MS slot clock changes

* Account for genesis time

* Add progress on duties refactor

* Add simple is_aggregator bool to val subscription

* Start work on attestation_verification.rs

* Add progress on ObservedAttestations

* Progress with ObservedAttestations

* Fix tests

* Add observed attestations to the beacon chain

* Add attestation observation to processing code

* Add progress on attestation verification

* Add first draft of ObservedAttesters

* Add more tests

* Add observed attesters to beacon chain

* Add observers to attestation processing

* Add more attestation verification

* Create ObservedAggregators map

* Remove commented-out code

* Add observed aggregators into chain

* Add progress

* Finish adding features to attestation verification

* Ensure beacon chain compiles

* Link attn verification into chain

* Integrate new attn verification in chain

* Remove old attestation processing code

* Start trying to fix beacon_chain tests

* Split adding into pools into two functions

* Add aggregation to harness

* Get test harness working again

* Adjust the number of aggregators for test harness

* Fix edge-case in harness

* Integrate new attn processing in network

* Fix compile bug in validator_client

* Update validator API endpoints

* Fix aggreagation in test harness

* Fix enum thing

* Fix attestation observation bug:

* Patch failing API tests

* Start adding comments to attestation verification

* Remove unused attestation field

* Unify "is block known" logic

* Update comments

* Supress fork choice errors for network processing

* Add todos

* Tidy

* Add gossip attn tests

* Disallow test harness to produce old attns

* Comment out in-progress tests

* Partially address pruning tests

* Fix failing store test

* Add aggregate tests

* Add comments about which spec conditions we check

* Dont re-aggregate

* Split apart test harness attn production

* Fix compile error in network

* Make progress on commented-out test

* Fix skipping attestation test

* Add fork choice verification tests

* Tidy attn tests, remove dead code

* Remove some accidentally added code

* Fix clippy lint

* Rename test file

* Add block tests, add cheap block proposer check

* Rename block testing file

* Add observed_block_producers

* Tidy

* Switch around block signature verification

* Finish block testing

* Remove gossip from signature tests

* First pass of self review

* Fix deviation in spec

* Update test spec tags

* Start moving over to hashset

* Finish moving observed attesters to hashmap

* Move aggregation pool over to hashmap

* Make fc attn borrow again

* Fix rest_api compile error

* Fix missing comments

* Fix monster test

* Uncomment increasing slots test

* Address remaining comments

* Remove unsafe, use cfg test

* Remove cfg test flag

* Fix dodgy comment

* Revert "Update hashmap hashset to stable futures"

This reverts commit d432378a3c.

* Revert "Adds panic test to hashset delay"

This reverts commit 281502396f.

* Ported attestation_service

* Ported duties_service

* Ported fork_service

* More ports

* Port block_service

* Minor fixes

* VC compiles

* Update TODOS

* Borrow self where possible

* Ignore aggregates that are already known.

* Unify aggregator modulo logic

* Fix typo in logs

* Refactor validator subscription logic

* Avoid reproducing selection proof

* Skip HTTP call if no subscriptions

* Rename DutyAndState -> DutyAndProof

* Tidy logs

* Print root as dbg

* Fix compile errors in tests

* Fix compile error in test

* Re-Fix attestation and duties service

* Minor fixes

Co-authored-by: Paul Hauner <paul@paulhauner.com>

* Network crate update to stable futures

* Port account_manager to stable futures (#1121)

* Port account_manager to stable futures

* Run async fns in tokio environment

* Port rest_api crate to stable futures (#1118)

* Port rest_api lib to stable futures

* Reduce tokio features

* Update notifier to stable futures

* Builder update

* Further updates

* Convert self referential async functions

* stable futures fixes (#1124)

* Fix eth1 update functions

* Fix genesis and client

* Fix beacon node lib

* Return appropriate runtimes from environment

* Fix test rig

* Refactor eth1 service update

* Upgrade simulator to stable futures

* Lighthouse compiles on stable futures

* Remove println debugging statement

* Update libp2p service, start rpc test upgrade

* Update network crate for new libp2p

* Update tokio::codec to futures_codec (#1128)

* Further work towards RPC corrections

* Correct http timeout and network service select

* Use tokio runtime for libp2p

* Revert "Update tokio::codec to futures_codec (#1128)"

This reverts commit e57aea924a.

* Upgrade RPC libp2p tests

* Upgrade secio fallback test

* Upgrade gossipsub examples

* Clean up RPC protocol

* Test fixes (#1133)

* Correct websocket timeout and run on os thread

* Fix network test

* Clean up PR

* Correct tokio tcp move attestation service tests

* Upgrade attestation service tests

* Correct network test

* Correct genesis test

* Test corrections

* Log info when block is received

* Modify logs and update attester service events

* Stable futures: fixes to vc, eth1 and account manager (#1142)

* Add local testnet scripts

* Remove whiteblock script

* Rename local testnet script

* Move spawns onto handle

* Fix VC panic

* Initial fix to block production issue

* Tidy block producer fix

* Tidy further

* Add local testnet clean script

* Run cargo fmt

* Tidy duties service

* Tidy fork service

* Tidy ForkService

* Tidy AttestationService

* Tidy notifier

* Ensure await is not suppressed in eth1

* Ensure await is not suppressed in account_manager

* Use .ok() instead of .unwrap_or(())

* RPC decoding test for proto

* Update discv5 and eth2-libp2p deps

* Fix lcli double runtime issue (#1144)

* Handle stream termination and dialing peer errors

* Correct peer_info variant types

* Remove unnecessary warnings

* Handle subnet unsubscription removal and improve logigng

* Add logs around ping

* Upgrade discv5 and improve logging

* Handle peer connection status for multiple connections

* Improve network service logging

* Improve logging around peer manager

* Upgrade swarm poll centralise peer management

* Identify clients on error

* Fix `remove_peer` in sync (#1150)

* remove_peer removes from all chains

* Remove logs

* Fix early return from loop

* Improved logging, fix panic

* Partially correct tests

* Stable futures: Vc sync (#1149)

* Improve syncing heuristic

* Add comments

* Use safer method for tolerance

* Fix tests

* Stable futures: Fix VC bug, update agg pool, add more metrics (#1151)

* Expose epoch processing summary

* Expose participation metrics to prometheus

* Switch to f64

* Reduce precision

* Change precision

* Expose observed attesters metrics

* Add metrics for agg/unagg attn counts

* Add metrics for gossip rx

* Add metrics for gossip tx

* Adds ignored attns to prom

* Add attestation timing

* Add timer for aggregation pool sig agg

* Add write lock timer for agg pool

* Add more metrics to agg pool

* Change map lock code

* Add extra metric to agg pool

* Change lock handling in agg pool

* Change .write() to .read()

* Add another agg pool timer

* Fix for is_aggregator

* Fix pruning bug

Co-authored-by: pawan <pawandhananjay@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>

beacon_node/beacon_chain/src/naive_aggregation_pool.rs

@@ -1,3 +1,4 @@
+use crate::metrics;
 use parking_lot::RwLock;
 use std::collections::HashMap;
 use types::{Attestation, AttestationData, EthSpec, Slot};
@@ -68,6 +69,8 @@ impl<E: EthSpec> AggregatedAttestationMap<E> {
     ///
     /// The given attestation (`a`) must only have one signature.
     pub fn insert(&mut self, a: &Attestation<E>) -> Result<InsertOutcome, Error> {
+        let _timer = metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_CORE_INSERT);
+
         let set_bits = a
             .aggregation_bits
             .iter()
@@ -93,6 +96,8 @@ impl<E: EthSpec> AggregatedAttestationMap<E> {
             {
                 Ok(InsertOutcome::SignatureAlreadyKnown { committee_index })
             } else {
+                let _timer =
+                    metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_AGGREGATION);
                 existing_attestation.aggregate(a);
                 Ok(InsertOutcome::SignatureAggregated { committee_index })
             }
@@ -164,8 +169,9 @@ impl<E: EthSpec> NaiveAggregationPool<E> {
     /// The pool may be pruned if the given `attestation.data` has a slot higher than any
     /// previously seen.
     pub fn insert(&self, attestation: &Attestation<E>) -> Result<InsertOutcome, Error> {
+        let _timer = metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_INSERT);
         let slot = attestation.data.slot;
-        let lowest_permissible_slot = *self.lowest_permissible_slot.read();
+        let lowest_permissible_slot: Slot = *self.lowest_permissible_slot.read();
 
         // Reject any attestations that are too old.
         if slot < lowest_permissible_slot {
@@ -175,11 +181,15 @@ impl<E: EthSpec> NaiveAggregationPool<E> {
             });
         }
 
+        let lock_timer =
+            metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_MAPS_WRITE_LOCK);
         let mut maps = self.maps.write();
+        drop(lock_timer);
 
         let outcome = if let Some(map) = maps.get_mut(&slot) {
             map.insert(attestation)
         } else {
+            let _timer = metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_CREATE_MAP);
             // To avoid re-allocations, try and determine a rough initial capacity for the new item
             // by obtaining the mean size of all items in earlier epoch.
             let (count, sum) = maps
@@ -219,8 +229,19 @@ impl<E: EthSpec> NaiveAggregationPool<E> {
     /// Removes any attestations with a slot lower than `current_slot` and bars any future
     /// attestations with a slot lower than `current_slot - SLOTS_RETAINED`.
     pub fn prune(&self, current_slot: Slot) {
+        let _timer = metrics::start_timer(&metrics::ATTESTATION_PROCESSING_AGG_POOL_PRUNE);
+
         // Taking advantage of saturating subtraction on `Slot`.
         let lowest_permissible_slot = current_slot - Slot::from(SLOTS_RETAINED);
+
+        // No need to prune if the lowest permissible slot has not changed and the queue length is
+        // less than the maximum
+        if *self.lowest_permissible_slot.read() == lowest_permissible_slot
+            && self.maps.read().len() <= SLOTS_RETAINED
+        {
+            return;
+        }
+
         *self.lowest_permissible_slot.write() = lowest_permissible_slot;
         let mut maps = self.maps.write();