Merge commit '392447f5c8f986ded2559a78457f4cd87942f393' into update-bridges-subtree-r/w

polkadot/bridges/primitives/chain-polkadot/Cargo.toml

@@ -7,16 +7,20 @@ edition = "2018"
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 [dependencies]
+smallvec = "1.7"
 
 # Bridge Dependencies
+
 bp-messages = { path = "../messages", default-features = false }
 bp-polkadot-core = { path = "../polkadot-core", default-features = false }
 bp-runtime = { path = "../runtime", default-features = false }
 
 # Substrate Based Dependencies
 
-sp-api = { git = "https://github.com/paritytech/substrate", branch = "master" , default-features = false }
+frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-version = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 
 [features]
 default = ["std"]
@@ -24,6 +28,8 @@ std = [
 	"bp-messages/std",
 	"bp-polkadot-core/std",
 	"bp-runtime/std",
+	"frame-support/std",
 	"sp-api/std",
 	"sp-std/std",
+	"sp-version/std",
 ]

polkadot/bridges/primitives/chain-polkadot/src/lib.rs

@@ -21,13 +21,46 @@
 #![allow(clippy::unnecessary_mut_passed)]
 
 use bp_messages::{LaneId, MessageDetails, MessageNonce, UnrewardedRelayersState};
+use frame_support::weights::{
+	WeightToFeeCoefficient, WeightToFeeCoefficients, WeightToFeePolynomial,
+};
 use sp_std::prelude::*;
+use sp_version::RuntimeVersion;
 
 pub use bp_polkadot_core::*;
 
 /// Polkadot Chain
 pub type Polkadot = PolkadotLike;
 
+// NOTE: This needs to be kept up to date with the Polkadot runtime found in the Polkadot repo.
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+	spec_name: sp_version::create_runtime_str!("polkadot"),
+	impl_name: sp_version::create_runtime_str!("parity-polkadot"),
+	authoring_version: 0,
+	spec_version: 9100,
+	impl_version: 0,
+	apis: sp_version::create_apis_vec![[]],
+	transaction_version: 7,
+};
+
+// NOTE: This needs to be kept up to date with the Polkadot runtime found in the Polkadot repo.
+pub struct WeightToFee;
+impl WeightToFeePolynomial for WeightToFee {
+	type Balance = Balance;
+	fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
+		const CENTS: Balance = 10_000_000_000 / 100;
+		// in Polkadot, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
+		let p = CENTS;
+		let q = 10 * Balance::from(ExtrinsicBaseWeight::get());
+		smallvec::smallvec![WeightToFeeCoefficient {
+			degree: 1,
+			negative: false,
+			coeff_frac: Perbill::from_rational(p % q, q),
+			coeff_integer: p / q,
+		}]
+	}
+}
+
 // We use this to get the account on Polkadot (target) which is derived from Kusama's (source)
 // account.
 pub fn derive_account_from_kusama_id(id: bp_runtime::SourceAccount<AccountId>) -> AccountId {
@@ -35,27 +68,53 @@ pub fn derive_account_from_kusama_id(id: bp_runtime::SourceAccount<AccountId>) -
 	AccountIdConverter::convert(encoded_id)
 }
 
+/// Per-byte fee for Polkadot transactions.
+pub const TRANSACTION_BYTE_FEE: Balance = 10 * 10_000_000_000 / 100 / 1_000;
+
+/// Existential deposit on Polkadot.
+pub const EXISTENTIAL_DEPOSIT: Balance = 10_000_000_000;
+
+/// The target length of a session (how often authorities change) on Polkadot measured in of number
+/// of blocks.
+///
+/// Note that since this is a target sessions may change before/after this time depending on network
+/// conditions.
+pub const SESSION_LENGTH: BlockNumber = 4 * time_units::HOURS;
+
+/// Name of the With-Kusama messages pallet instance in the Polkadot runtime.
+pub const WITH_KUSAMA_MESSAGES_PALLET_NAME: &str = "BridgeKusamaMessages";
+
+/// Name of the KSM->DOT conversion rate stored in the Polkadot runtime.
+pub const KUSAMA_TO_POLKADOT_CONVERSION_RATE_PARAMETER_NAME: &str =
+	"KusamaToPolkadotConversionRate";
+
 /// Name of the `PolkadotFinalityApi::best_finalized` runtime method.
 pub const BEST_FINALIZED_POLKADOT_HEADER_METHOD: &str = "PolkadotFinalityApi_best_finalized";
 /// Name of the `PolkadotFinalityApi::is_known_header` runtime method.
 pub const IS_KNOWN_POLKADOT_HEADER_METHOD: &str = "PolkadotFinalityApi_is_known_header";
 
-/// Name of the `ToPolkadotOutboundLaneApi::estimate_message_delivery_and_dispatch_fee` runtime method.
+/// Name of the `ToPolkadotOutboundLaneApi::estimate_message_delivery_and_dispatch_fee` runtime
+/// method.
 pub const TO_POLKADOT_ESTIMATE_MESSAGE_FEE_METHOD: &str =
 	"ToPolkadotOutboundLaneApi_estimate_message_delivery_and_dispatch_fee";
 /// Name of the `ToPolkadotOutboundLaneApi::message_details` runtime method.
 pub const TO_POLKADOT_MESSAGE_DETAILS_METHOD: &str = "ToPolkadotOutboundLaneApi_message_details";
 /// Name of the `ToPolkadotOutboundLaneApi::latest_generated_nonce` runtime method.
-pub const TO_POLKADOT_LATEST_GENERATED_NONCE_METHOD: &str = "ToPolkadotOutboundLaneApi_latest_generated_nonce";
+pub const TO_POLKADOT_LATEST_GENERATED_NONCE_METHOD: &str =
+	"ToPolkadotOutboundLaneApi_latest_generated_nonce";
 /// Name of the `ToPolkadotOutboundLaneApi::latest_received_nonce` runtime method.
-pub const TO_POLKADOT_LATEST_RECEIVED_NONCE_METHOD: &str = "ToPolkadotOutboundLaneApi_latest_received_nonce";
+pub const TO_POLKADOT_LATEST_RECEIVED_NONCE_METHOD: &str =
+	"ToPolkadotOutboundLaneApi_latest_received_nonce";
 
 /// Name of the `FromPolkadotInboundLaneApi::latest_received_nonce` runtime method.
-pub const FROM_POLKADOT_LATEST_RECEIVED_NONCE_METHOD: &str = "FromPolkadotInboundLaneApi_latest_received_nonce";
+pub const FROM_POLKADOT_LATEST_RECEIVED_NONCE_METHOD: &str =
+	"FromPolkadotInboundLaneApi_latest_received_nonce";
 /// Name of the `FromPolkadotInboundLaneApi::latest_onfirmed_nonce` runtime method.
-pub const FROM_POLKADOT_LATEST_CONFIRMED_NONCE_METHOD: &str = "FromPolkadotInboundLaneApi_latest_confirmed_nonce";
+pub const FROM_POLKADOT_LATEST_CONFIRMED_NONCE_METHOD: &str =
+	"FromPolkadotInboundLaneApi_latest_confirmed_nonce";
 /// Name of the `FromPolkadotInboundLaneApi::unrewarded_relayers_state` runtime method.
-pub const FROM_POLKADOT_UNREWARDED_RELAYERS_STATE: &str = "FromPolkadotInboundLaneApi_unrewarded_relayers_state";
+pub const FROM_POLKADOT_UNREWARDED_RELAYERS_STATE: &str =
+	"FromPolkadotInboundLaneApi_unrewarded_relayers_state";
 
 sp_api::decl_runtime_apis! {
 	/// API for querying information about the finalized Polkadot headers.