Flag to disable metadata hash check

.github/workflows/ci.yml

@@ -225,7 +225,7 @@ jobs:
 
       - name: Run latest node
         run: |
-          docker run -p 9944:9944 -p 9933:9933 -p 30333:30333 paritypr/substrate:master-1680977e --dev --rpc-external &
+          docker run -p 9944:9944 -p 9933:9933 -p 30333:30333 paritypr/substrate:master-18228a9b --dev --rpc-external &
 
       - name: Wait until node has started
         run: sleep 20s

Cargo.toml

@@ -105,6 +105,9 @@ staking-xt = ["std", "ac-primitives/staking-xt"]
 # of the functionality this feature provides.
 contracts-xt = ["std", "ac-primitives/contracts-xt"]
 
+# Provides compatibility to RFC-0078: "Merkelized Metadata" but disables the check of the metadata hash
+disable-metadata-hash-check = ["ac-primitives/disable-metadata-hash-check"]
+
 # Enables all std features of dependencies in case of std build.
 std = [
     # crates.io no_std

examples/async/Cargo.toml

@@ -26,4 +26,4 @@ sp-runtime = { git = "https://github.com/paritytech/polkadot-sdk.git", branch =
 sp-weights = { git = "https://github.com/paritytech/polkadot-sdk.git", branch = "master" }
 
 # local deps
-substrate-api-client = { path = "../..", version = "0.17", features = ["staking-xt", "contracts-xt"] }
+substrate-api-client = { path = "../..", version = "0.17", features = ["staking-xt", "contracts-xt", "disable-metadata-hash-check"] }

examples/sync/Cargo.toml

@@ -15,4 +15,4 @@ sp-runtime = { git = "https://github.com/paritytech/polkadot-sdk.git", branch =
 sp-weights = { git = "https://github.com/paritytech/polkadot-sdk.git", branch = "master" }
 
 # local deps
-substrate-api-client = { path = "../..", version = "0.17", default-features = false, features = ["tungstenite-client", "ws-client"] }
+substrate-api-client = { path = "../..", version = "0.17", default-features = false, features = ["tungstenite-client", "ws-client", "disable-metadata-hash-check"] }

primitives/Cargo.toml

@@ -47,6 +47,7 @@ default = ["std"]
 disable_target_static_assertions = [
     "sp-runtime-interface/disable_target_static_assertions",
 ]
+disable-metadata-hash-check = []
 std = [
     "codec/std",
     "primitive-types/std",

primitives/src/extrinsics/extrinsic_params.rs

@@ -17,6 +17,8 @@
 
 use crate::config::Config;
 use codec::{Decode, Encode};
+#[cfg(feature = "disable-metadata-hash-check")]
+use primitive_types::H256;
 use sp_runtime::{
 	generic::Era,
 	traits::{BlakeTwo256, Hash},
@@ -38,11 +40,20 @@ pub struct GenericSignedExtra<Tip, Index> {
 	#[codec(compact)]
 	pub nonce: Index,
 	pub tip: Tip,
+	#[cfg(feature = "disable-metadata-hash-check")]
+	pub check_hash: u8,
 }
 
 impl<Tip, Index> GenericSignedExtra<Tip, Index> {
 	pub fn new(era: Era, nonce: Index, tip: Tip) -> Self {
-		Self { era, nonce, tip }
+		#[cfg(feature = "disable-metadata-hash-check")]
+		{
+			Self { era, nonce, tip, check_hash: 0 }
+		}
+		#[cfg(not(feature = "disable-metadata-hash-check"))]
+		{
+			Self { era, nonce, tip }
+		}
 	}
 }
 
@@ -55,6 +66,9 @@ impl<Tip, Index> GenericSignedExtra<Tip, Index> {
 // defines what is returned upon the `additional_signed` call. The AdditionalSigned defined here
 // must mirror these return values.
 // Example: https://github.com/paritytech/substrate/blob/23bb5a6255bbcd7ce2999044710428bc4a7a924f/frame/system/src/extensions/check_non_zero_sender.rs#L64-L66
+#[cfg(feature = "disable-metadata-hash-check")]
+pub type GenericAdditionalSigned<Hash> = ((), u32, u32, Hash, Hash, (), (), (), Option<H256>);
+#[cfg(not(feature = "disable-metadata-hash-check"))]
 pub type GenericAdditionalSigned<Hash> = ((), u32, u32, Hash, Hash, (), (), ());
 
 /// This trait allows you to configure the "signed extra" and
@@ -179,16 +193,33 @@ where
 	}
 
 	fn additional_signed(&self) -> Self::AdditionalSigned {
-		(
-			(),
-			self.spec_version,
-			self.transaction_version,
-			self.genesis_hash,
-			self.mortality_checkpoint,
-			(),
-			(),
-			(),
-		)
+		#[cfg(feature = "disable-metadata-hash-check")]
+		{
+			(
+				(),
+				self.spec_version,
+				self.transaction_version,
+				self.genesis_hash,
+				self.mortality_checkpoint,
+				(),
+				(),
+				(),
+				None,
+			)
+		}
+		#[cfg(not(feature = "disable-metadata-hash-check"))]
+		{
+			(
+				(),
+				self.spec_version,
+				self.transaction_version,
+				self.genesis_hash,
+				self.mortality_checkpoint,
+				(),
+				(),
+				(),
+			)
+		}
 	}
 }
 

primitives/src/extrinsics/mod.rs

@@ -325,6 +325,8 @@ mod tests {
 		assert_eq!(call, call1);
 	}
 
+	// Currently does not with available version of substrate extrinsic
+	#[cfg(not(feature = "disable-metadata-hash-check"))]
 	#[test]
 	fn xt_hash_matches_substrate_impl() {
 		// Define extrinsic params.
@@ -384,6 +386,8 @@ mod tests {
 		)
 	}
 
+	// Currently does not work with stored bytes. Need to create a new version
+	#[cfg(not(feature = "disable-metadata-hash-check"))]
 	#[test]
 	fn xt_hash_matches_substrate_impl_large_xt() {
 		// Define xt parameters,

testing/async/Cargo.toml

@@ -23,4 +23,4 @@ pallet-balances = { git = "https://github.com/paritytech/polkadot-sdk.git", bran
 pallet-staking = { git = "https://github.com/paritytech/polkadot-sdk.git", branch = "master" }
 
 # local deps
-substrate-api-client = { path = "../..", version = "0.17", features = ["staking-xt", "contracts-xt"] }
+substrate-api-client = { path = "../..", version = "0.17", features = ["staking-xt", "contracts-xt", "disable-metadata-hash-check"] }

testing/async/examples/state_tests.rs

@@ -127,7 +127,7 @@ async fn main() {
 		.get_storage_keys_paged(Some(storage_key_prefix), max_keys, None, None)
 		.await
 		.unwrap();
-	assert_eq!(storage_keys.len() as u32, 13);
+	assert_eq!(storage_keys.len() as u32, 14);
 
 	let max_keys = 20;
 	let storage_keys = api

testing/sync/Cargo.toml

@@ -12,5 +12,5 @@ sp-core = { git = "https://github.com/paritytech/polkadot-sdk.git", branch = "ma
 sp-runtime = { git = "https://github.com/paritytech/polkadot-sdk.git", branch = "master" }
 
 # local deps
-substrate-api-client = { path = "../..", version = "0.17", default-features = false, features = ["tungstenite-client", "ws-client"] }
+substrate-api-client = { path = "../..", version = "0.17", default-features = false, features = ["tungstenite-client", "ws-client", "disable-metadata-hash-check"] }
 ac-keystore = { path = "../../keystore" }