Update BEEFY+MMR integration. (#3480)

* Update MMR leaf.

* Revert to older substrate.

* Add version docs.

* Fix spellcheck.

runtime/common/Cargo.toml

@@ -14,7 +14,6 @@ serde = { version = "1.0.123", default-features = false }
 serde_derive = { version = "1.0.117", optional = true }
 static_assertions = "1.1.0"
 
-beefy-primitives = { git = "https://github.com/paritytech/grandpa-bridge-gadget", branch = "master", default-features = false }
 sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 inherents = { package = "sp-inherents", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-std = { package = "sp-std", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -36,8 +35,7 @@ pallet-offences = { git = "https://github.com/paritytech/substrate", branch = "m
 pallet-transaction-payment = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 pallet-treasury = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 pallet-election-provider-multi-phase = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
-pallet-beefy = { git = "https://github.com/paritytech/grandpa-bridge-gadget", branch = "master", default-features = false }
-pallet-mmr = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+pallet-beefy-mmr = { git = "https://github.com/paritytech/grandpa-bridge-gadget", branch = "master", default-features = false }
 
 frame-benchmarking = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false, optional = true }
 pallet-babe = { git = "https://github.com/paritytech/substrate", branch = "master", default-features=false, optional = true }
@@ -67,7 +65,6 @@ libsecp256k1 = "0.3.5"
 default = ["std"]
 no_std = []
 std = [
-	"beefy-primitives/std",
 	"bitvec/std",
 	"parity-scale-codec/std",
 	"log/std",
@@ -83,8 +80,7 @@ std = [
 	"frame-support/std",
 	"pallet-authorship/std",
 	"pallet-balances/std",
-	"pallet-beefy/std",
-	"pallet-mmr/std",
+	"pallet-beefy-mmr/std",
 	"pallet-session/std",
 	"pallet-staking/std",
 	"pallet-timestamp/std",

runtime/common/src/lib.rs

@@ -24,7 +24,6 @@ pub mod auctions;
 pub mod crowdloan;
 pub mod purchase;
 pub mod impls;
-pub mod mmr;
 pub mod paras_sudo_wrapper;
 pub mod paras_registrar;
 pub mod slot_range;
@@ -37,8 +36,7 @@ mod mock;
 #[cfg(test)]
 mod integration_tests;
 
-use beefy_primitives::crypto::AuthorityId as BeefyId;
-use primitives::v1::{AccountId, AssignmentId, BlockNumber, ValidatorId};
+use primitives::v1::{AssignmentId, BlockNumber, ValidatorId};
 use sp_runtime::{Perquintill, Perbill, FixedPointNumber};
 use frame_system::limits;
 use frame_support::{
@@ -181,20 +179,6 @@ impl<T: pallet_session::Config> OneSessionHandler<T::AccountId> for AssignmentSe
 	fn on_disabled(_: usize) { }
 }
 
-/// Generates a `BeefyId` from the given `AccountId`. The resulting `BeefyId` is
-/// a dummy value and this is a utility function meant to be used when migration
-/// session keys.
-pub fn dummy_beefy_id_from_account_id(a: AccountId) -> BeefyId {
-	let mut id = BeefyId::default();
-	let id_raw: &mut [u8] = id.as_mut();
-
-	// NOTE: AccountId is 32 bytes, whereas BeefyId is 33 bytes.
-	id_raw[1..].copy_from_slice(a.as_ref());
-	id_raw[0..4].copy_from_slice(b"beef");
-
-	id
-}
-
 #[cfg(test)]
 mod multiplier_tests {
 	use super::*;
@@ -297,15 +281,4 @@ mod multiplier_tests {
 			println!("block = {} multiplier {:?}", blocks, multiplier);
 		}
 	}
-
-	#[test]
-	fn generate_dummy_unique_beefy_id_from_account_id() {
-		let acc1 = AccountId::new([0; 32]);
-		let acc2 = AccountId::new([1; 32]);
-
-		let beefy_id1 = dummy_beefy_id_from_account_id(acc1);
-		let beefy_id2 = dummy_beefy_id_from_account_id(acc2);
-
-		assert_ne!(beefy_id1, beefy_id2);
-	}
 }