Update MMR Runtime API - add proof batching (#4700)

* update runtime apis

* rebase

* update apis

* update apis

* minor fix

* minor fix

* minro fixes

* update api

* style fix

* update lockfile for {"substrate"}

Co-authored-by: acatangiu <adrian@parity.io>
Co-authored-by: parity-processbot <>

polkadot/bridges/bin/millau/runtime/src/lib.rs

@@ -40,7 +40,8 @@ use pallet_grandpa::{
 	fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
 };
 use sp_mmr_primitives::{
-	DataOrHash, EncodableOpaqueLeaf, Error as MmrError, LeafDataProvider, Proof as MmrProof,
+	DataOrHash, EncodableOpaqueLeaf, Error as MmrError, LeafDataProvider,
+	BatchProof as MmrBatchProof, Proof as MmrProof, LeafIndex as MmrLeafIndex
 };
 use pallet_transaction_payment::{FeeDetails, Multiplier, RuntimeDispatchInfo};
 use sp_api::impl_runtime_apis;
@@ -575,6 +576,7 @@ mod benches {
 		[pallet_bridge_token_swap, BridgeRialtoTokenSwap]
 	);
 }
+type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
 
 impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
@@ -681,25 +683,27 @@ impl_runtime_apis! {
 	}
 
 	impl sp_mmr_primitives::MmrApi<Block, MmrHash> for Runtime {
-		fn generate_proof(leaf_index: u64)
+		fn generate_proof(leaf_index: MmrLeafIndex)
 			-> Result<(EncodableOpaqueLeaf, MmrProof<MmrHash>), MmrError>
 		{
-			Mmr::generate_proof(leaf_index)
-				.map(|(leaf, proof)| (EncodableOpaqueLeaf::from_leaf(&leaf), proof))
+			Mmr::generate_batch_proof(vec![leaf_index])
+				.and_then(|(leaves, proof)| Ok((
+					EncodableOpaqueLeaf::from_leaf(&leaves[0]), 
+					MmrBatchProof::into_single_leaf_proof(proof)?
+				)))
+			
 		}
 
 		fn verify_proof(leaf: EncodableOpaqueLeaf, proof: MmrProof<MmrHash>)
 			-> Result<(), MmrError>
 		{
-			pub type Leaf = <
-				<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider
-			>::LeafData;
 
-			let leaf: Leaf = leaf
+			type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider>::LeafData;
+			let leaf: MmrLeaf = leaf
 				.into_opaque_leaf()
 				.try_decode()
 				.ok_or(MmrError::Verify)?;
-			Mmr::verify_leaf(leaf, proof)
+			Mmr::verify_leaves(vec![leaf], MmrProof::into_batch_proof(proof))
 		}
 
 		fn verify_proof_stateless(
@@ -707,9 +711,35 @@ impl_runtime_apis! {
 			leaf: EncodableOpaqueLeaf,
 			proof: MmrProof<MmrHash>
 		) -> Result<(), MmrError> {
-			type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
 			let node = DataOrHash::Data(leaf.into_opaque_leaf());
-			pallet_mmr::verify_leaf_proof::<MmrHashing, _>(root, node, proof)
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, vec![node], MmrProof::into_batch_proof(proof))
+		}
+
+		fn generate_batch_proof(leaf_indices: Vec<MmrLeafIndex>)
+			-> Result<(Vec<EncodableOpaqueLeaf>, MmrBatchProof<MmrHash>), MmrError>
+		{
+			Mmr::generate_batch_proof(leaf_indices)
+				.map(|(leaves, proof)| (leaves.into_iter().map(|leaf| EncodableOpaqueLeaf::from_leaf(&leaf)).collect(), proof))
+		}
+
+		fn verify_batch_proof(leaves: Vec<EncodableOpaqueLeaf>, proof: MmrBatchProof<MmrHash>)
+			-> Result<(), MmrError>
+		{
+			type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider>::LeafData;
+			let leaves = leaves.into_iter().map(|leaf|
+				leaf.into_opaque_leaf()
+				.try_decode()
+				.ok_or(MmrError::Verify)).collect::<Result<Vec<MmrLeaf>, MmrError>>()?;
+			Mmr::verify_leaves(leaves, proof)
+		}
+
+		fn verify_batch_proof_stateless(
+			root: MmrHash,
+			leaves: Vec<EncodableOpaqueLeaf>,
+			proof: MmrBatchProof<MmrHash>
+		) -> Result<(), MmrError> {
+			let nodes = leaves.into_iter().map(|leaf|DataOrHash::Data(leaf.into_opaque_leaf())).collect();
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, nodes, proof)
 		}
 	}
 

polkadot/bridges/bin/rialto/runtime/src/lib.rs

@@ -41,7 +41,8 @@ use pallet_grandpa::{
 	fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
 };
 use sp_mmr_primitives::{
-	DataOrHash, EncodableOpaqueLeaf, Error as MmrError, LeafDataProvider, Proof as MmrProof,
+	DataOrHash, EncodableOpaqueLeaf, Error as MmrError, LeafDataProvider,
+	BatchProof as MmrBatchProof, Proof as MmrProof, LeafIndex as MmrLeafIndex
 };
 use pallet_transaction_payment::{FeeDetails, Multiplier, RuntimeDispatchInfo};
 use sp_api::impl_runtime_apis;
@@ -571,6 +572,7 @@ mod benches {
 		[pallet_bridge_grandpa, BridgeMillauGrandpa]
 	);
 }
+pub type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
 
 impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
@@ -630,22 +632,23 @@ impl_runtime_apis! {
 		fn generate_proof(leaf_index: u64)
 			-> Result<(EncodableOpaqueLeaf, MmrProof<Hash>), MmrError>
 		{
-			Mmr::generate_proof(leaf_index)
-				.map(|(leaf, proof)| (EncodableOpaqueLeaf::from_leaf(&leaf), proof))
+			Mmr::generate_batch_proof(vec![leaf_index])
+				.and_then(|(leaves, proof)| Ok((
+					EncodableOpaqueLeaf::from_leaf(&leaves[0]), 
+					MmrBatchProof::into_single_leaf_proof(proof)?
+				)))
 		}
 
 		fn verify_proof(leaf: EncodableOpaqueLeaf, proof: MmrProof<Hash>)
 			-> Result<(), MmrError>
 		{
-			pub type Leaf = <
-				<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider
-			>::LeafData;
 
-			let leaf: Leaf = leaf
+			pub type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider>::LeafData;
+			let leaf: MmrLeaf = leaf
 				.into_opaque_leaf()
 				.try_decode()
 				.ok_or(MmrError::Verify)?;
-			Mmr::verify_leaf(leaf, proof)
+			Mmr::verify_leaves(vec![leaf], MmrProof::into_batch_proof(proof))
 		}
 
 		fn verify_proof_stateless(
@@ -653,9 +656,35 @@ impl_runtime_apis! {
 			leaf: EncodableOpaqueLeaf,
 			proof: MmrProof<Hash>
 		) -> Result<(), MmrError> {
-			type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
 			let node = DataOrHash::Data(leaf.into_opaque_leaf());
-			pallet_mmr::verify_leaf_proof::<MmrHashing, _>(root, node, proof)
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, vec![node], MmrProof::into_batch_proof(proof))
+		}
+
+		fn generate_batch_proof(leaf_indices: Vec<MmrLeafIndex>)
+			-> Result<(Vec<EncodableOpaqueLeaf>, MmrBatchProof<Hash>), MmrError>
+		{
+			Mmr::generate_batch_proof(leaf_indices)
+				.map(|(leaves, proof)| (leaves.into_iter().map(|leaf| EncodableOpaqueLeaf::from_leaf(&leaf)).collect(), proof))
+		}
+
+		fn verify_batch_proof(leaves: Vec<EncodableOpaqueLeaf>, proof: MmrBatchProof<Hash>)
+			-> Result<(), MmrError>
+		{
+			pub type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as LeafDataProvider>::LeafData;
+			let leaves = leaves.into_iter().map(|leaf|
+				leaf.into_opaque_leaf()
+				.try_decode()
+				.ok_or(MmrError::Verify)).collect::<Result<Vec<MmrLeaf>, MmrError>>()?;
+			Mmr::verify_leaves(leaves, proof)
+		}
+
+		fn verify_batch_proof_stateless(
+			root: Hash,
+			leaves: Vec<EncodableOpaqueLeaf>,
+			proof: MmrBatchProof<Hash>
+		) -> Result<(), MmrError> {
+			let nodes = leaves.into_iter().map(|leaf|DataOrHash::Data(leaf.into_opaque_leaf())).collect();
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, nodes, proof)
 		}
 	}
 

polkadot/runtime/kusama/src/lib.rs

@@ -1774,15 +1774,13 @@ sp_api::impl_runtime_apis! {
 		fn generate_proof(_leaf_index: u64)
 			-> Result<(mmr::EncodableOpaqueLeaf, mmr::Proof<Hash>), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::GenerateProof)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof(_leaf: mmr::EncodableOpaqueLeaf, _proof: mmr::Proof<Hash>)
 			-> Result<(), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof_stateless(
@@ -1790,15 +1788,32 @@ sp_api::impl_runtime_apis! {
 			_leaf: mmr::EncodableOpaqueLeaf,
 			_proof: mmr::Proof<Hash>
 		) -> Result<(), mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn mmr_root() -> Result<Hash, mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
+		fn generate_batch_proof(_leaf_indices: Vec<u64>)
+			-> Result<(Vec<mmr::EncodableOpaqueLeaf>, mmr::BatchProof<Hash>), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof(_leaves: Vec<mmr::EncodableOpaqueLeaf>, _proof: mmr::BatchProof<Hash>)
+			-> Result<(), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof_stateless(
+			_root: Hash,
+			_leaves: Vec<mmr::EncodableOpaqueLeaf>,
+			_proof: mmr::BatchProof<Hash>
+		) -> Result<(), mmr::Error> {
+			Err(mmr::Error::PalletNotIncluded)
+		}
 	}
 
 	impl fg_primitives::GrandpaApi<Block> for Runtime {

polkadot/runtime/polkadot/src/lib.rs

@@ -1720,15 +1720,13 @@ sp_api::impl_runtime_apis! {
 		fn generate_proof(_leaf_index: u64)
 			-> Result<(mmr::EncodableOpaqueLeaf, mmr::Proof<Hash>), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::GenerateProof)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof(_leaf: mmr::EncodableOpaqueLeaf, _proof: mmr::Proof<Hash>)
 			-> Result<(), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof_stateless(
@@ -1736,13 +1734,31 @@ sp_api::impl_runtime_apis! {
 			_leaf: mmr::EncodableOpaqueLeaf,
 			_proof: mmr::Proof<Hash>
 		) -> Result<(), mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn mmr_root() -> Result<Hash, mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn generate_batch_proof(_leaf_indices: Vec<u64>)
+			-> Result<(Vec<mmr::EncodableOpaqueLeaf>, mmr::BatchProof<Hash>), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof(_leaves: Vec<mmr::EncodableOpaqueLeaf>, _proof: mmr::BatchProof<Hash>)
+			-> Result<(), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof_stateless(
+			_root: Hash,
+			_leaves: Vec<mmr::EncodableOpaqueLeaf>,
+			_proof: mmr::BatchProof<Hash>
+		) -> Result<(), mmr::Error> {
+			Err(mmr::Error::PalletNotIncluded)
 		}
 	}
 

polkadot/runtime/rococo/src/lib.rs

@@ -1100,6 +1100,8 @@ mod benches {
 	);
 }
 
+pub type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
+
 #[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
@@ -1376,22 +1378,22 @@ sp_api::impl_runtime_apis! {
 		fn generate_proof(leaf_index: u64)
 			-> Result<(mmr::EncodableOpaqueLeaf, mmr::Proof<Hash>), mmr::Error>
 		{
-			Mmr::generate_proof(leaf_index)
-				.map(|(leaf, proof)| (mmr::EncodableOpaqueLeaf::from_leaf(&leaf), proof))
+			Mmr::generate_batch_proof(vec![leaf_index])
+				.and_then(|(leaves, proof)| Ok((
+					mmr::EncodableOpaqueLeaf::from_leaf(&leaves[0]),
+					mmr::BatchProof::into_single_leaf_proof(proof)?
+				)))
 		}
 
 		fn verify_proof(leaf: mmr::EncodableOpaqueLeaf, proof: mmr::Proof<Hash>)
 			-> Result<(), mmr::Error>
 		{
-			pub type Leaf = <
-				<Runtime as pallet_mmr::Config>::LeafData as pallet_mmr::LeafDataProvider
-			>::LeafData;
-
-			let leaf: Leaf = leaf
+			pub type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as mmr::LeafDataProvider>::LeafData;
+			let leaf: MmrLeaf = leaf
 				.into_opaque_leaf()
 				.try_decode()
 				.ok_or(mmr::Error::Verify)?;
-			Mmr::verify_leaf(leaf, proof)
+			Mmr::verify_leaves(vec![leaf], mmr::Proof::into_batch_proof(proof))
 		}
 
 		fn verify_proof_stateless(
@@ -1399,14 +1401,40 @@ sp_api::impl_runtime_apis! {
 			leaf: mmr::EncodableOpaqueLeaf,
 			proof: mmr::Proof<Hash>
 		) -> Result<(), mmr::Error> {
-			type MmrHashing = <Runtime as pallet_mmr::Config>::Hashing;
 			let node = mmr::DataOrHash::Data(leaf.into_opaque_leaf());
-			pallet_mmr::verify_leaf_proof::<MmrHashing, _>(root, node, proof)
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, vec![node], mmr::Proof::into_batch_proof(proof))
 		}
 
 		fn mmr_root() -> Result<Hash, mmr::Error> {
 			Ok(Mmr::mmr_root())
 		}
+
+		fn generate_batch_proof(leaf_indices: Vec<mmr::LeafIndex>)
+			-> Result<(Vec<mmr::EncodableOpaqueLeaf>, mmr::BatchProof<Hash>), mmr::Error>
+		{
+			Mmr::generate_batch_proof(leaf_indices)
+				.map(|(leaves, proof)| (leaves.into_iter().map(|leaf| mmr::EncodableOpaqueLeaf::from_leaf(&leaf)).collect(), proof))
+		}
+
+		fn verify_batch_proof(leaves: Vec<mmr::EncodableOpaqueLeaf>, proof: mmr::BatchProof<Hash>)
+			-> Result<(), mmr::Error>
+		{
+			pub type MmrLeaf = <<Runtime as pallet_mmr::Config>::LeafData as mmr::LeafDataProvider>::LeafData;
+			let leaves = leaves.into_iter().map(|leaf|
+				leaf.into_opaque_leaf()
+				.try_decode()
+				.ok_or(mmr::Error::Verify)).collect::<Result<Vec<MmrLeaf>, mmr::Error>>()?;
+			Mmr::verify_leaves(leaves, proof)
+		}
+
+		fn verify_batch_proof_stateless(
+			root: Hash,
+			leaves: Vec<mmr::EncodableOpaqueLeaf>,
+			proof: mmr::BatchProof<Hash>
+		) -> Result<(), mmr::Error> {
+			let nodes = leaves.into_iter().map(|leaf|mmr::DataOrHash::Data(leaf.into_opaque_leaf())).collect();
+			pallet_mmr::verify_leaves_proof::<MmrHashing, _>(root, nodes, proof)
+		}
 	}
 
 	impl bp_rococo::RococoFinalityApi<Block> for Runtime {

polkadot/runtime/test-runtime/src/lib.rs

@@ -919,15 +919,13 @@ sp_api::impl_runtime_apis! {
 		fn generate_proof(_leaf_index: u64)
 			-> Result<(mmr::EncodableOpaqueLeaf, mmr::Proof<Hash>), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::GenerateProof)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof(_leaf: mmr::EncodableOpaqueLeaf, _proof: mmr::Proof<Hash>)
 			-> Result<(), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof_stateless(
@@ -935,15 +933,32 @@ sp_api::impl_runtime_apis! {
 			_leaf: mmr::EncodableOpaqueLeaf,
 			_proof: mmr::Proof<Hash>
 		) -> Result<(), mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn mmr_root() -> Result<Hash, mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
+		fn generate_batch_proof(_leaf_indices: Vec<u64>)
+			-> Result<(Vec<mmr::EncodableOpaqueLeaf>, mmr::BatchProof<Hash>), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof(_leaves: Vec<mmr::EncodableOpaqueLeaf>, _proof: mmr::BatchProof<Hash>)
+			-> Result<(), mmr::Error>
+		{
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof_stateless(
+			_root: Hash,
+			_leaves: Vec<mmr::EncodableOpaqueLeaf>,
+			_proof: mmr::BatchProof<Hash>
+		) -> Result<(), mmr::Error> {
+			Err(mmr::Error::PalletNotIncluded)
+		}
 	}
 
 	impl fg_primitives::GrandpaApi<Block> for Runtime {

polkadot/runtime/westend/src/lib.rs

@@ -1362,15 +1362,15 @@ sp_api::impl_runtime_apis! {
 		fn generate_proof(_leaf_index: u64)
 			-> Result<(mmr::EncodableOpaqueLeaf, mmr::Proof<Hash>), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::GenerateProof)
+
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof(_leaf: mmr::EncodableOpaqueLeaf, _proof: mmr::Proof<Hash>)
 			-> Result<(), mmr::Error>
 		{
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn verify_proof_stateless(
@@ -1378,13 +1378,36 @@ sp_api::impl_runtime_apis! {
 			_leaf: mmr::EncodableOpaqueLeaf,
 			_proof: mmr::Proof<Hash>
 		) -> Result<(), mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+
+			Err(mmr::Error::PalletNotIncluded)
 		}
 
 		fn mmr_root() -> Result<Hash, mmr::Error> {
-			// dummy implementation due to lack of MMR pallet.
-			Err(mmr::Error::Verify)
+
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn generate_batch_proof(_leaf_indices: Vec<u64>)
+			-> Result<(Vec<mmr::EncodableOpaqueLeaf>, mmr::BatchProof<Hash>), mmr::Error>
+		{
+
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof(_leaves: Vec<mmr::EncodableOpaqueLeaf>, _proof: mmr::BatchProof<Hash>)
+			-> Result<(), mmr::Error>
+		{
+
+			Err(mmr::Error::PalletNotIncluded)
+		}
+
+		fn verify_batch_proof_stateless(
+			_root: Hash,
+			_leaves: Vec<mmr::EncodableOpaqueLeaf>,
+			_proof: mmr::BatchProof<Hash>
+		) -> Result<(), mmr::Error> {
+
+			Err(mmr::Error::PalletNotIncluded)
 		}
 	}