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/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)
 		}
 	}