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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/runtime/rococo/src/lib.rs
+38 -10
View File
@@ -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 {