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

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* 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 <>
This commit is contained in:
Web3 Smith
2022-05-04 12:26:32 +01:00
committed by GitHub
parent dde3a74102
commit 9cdfbb4c8d
8 changed files with 392 additions and 236 deletions
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polkadot/bridges/bin/millau/runtime/src/lib.rs
+41 -11
View File
@@ -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)
}
}