set_main_chain_scripts extrinsic (#44)

changelog.md

@@ -30,6 +30,7 @@ This changelog is based on [Keep A Changelog](https://keepachangelog.com/en/1.1.
 `pallet-native-token-management` crates; data sources behind the `native-token` feature in
 `main-chain-follower-api` and `db-sync-follower` crates.
 * added helper functions to `SidechainParams` and all `MainChainScripts` types to read them from environment
+* Extrinsic `set_main_chain_scripts` for migrating to new committee selection main chain scripts
 
 # v1.0.0rc1
 

pallets/session-validator-management/Cargo.toml

@@ -20,6 +20,7 @@ sp-runtime = { workspace = true }
 sp-core = { workspace = true }
 sp-session-validator-management = { workspace = true }
 sp-io = { workspace = true, optional = true }
+sidechain-domain = { workspace = true }
 
 [dev-dependencies]
 sp-io = { workspace = true }

pallets/session-validator-management/src/lib.rs

@@ -21,6 +21,7 @@ pub mod pallet {
 	use frame_support::pallet_prelude::*;
 	use frame_system::pallet_prelude::*;
 	use log::{info, warn};
+	use sidechain_domain::{MainchainAddress, PolicyId};
 	use sp_runtime::traits::{One, Zero};
 	use sp_session_validator_management::*;
 	use sp_std::fmt::Display;
@@ -252,6 +253,27 @@ pub mod pallet {
 			});
 			Ok(())
 		}
+
+		/// Changes the main chain scripts used for committee rotation.
+		///
+		/// This extrinsic must be run either using `sudo` or some other chain governance mechanism.
+		#[pallet::call_index(1)]
+		#[pallet::weight(T::WeightInfo::set(1))]
+		pub fn set_main_chain_scripts(
+			origin: OriginFor<T>,
+			committee_candidate_address: MainchainAddress,
+			d_parameter_policy_id: PolicyId,
+			permissioned_candidates_policy_id: PolicyId,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+			let new_scripts = MainChainScripts {
+				committee_candidate_address,
+				d_parameter_policy_id,
+				permissioned_candidates_policy_id,
+			};
+			MainChainScriptsConfiguration::<T>::put(new_scripts);
+			Ok(())
+		}
 	}
 
 	impl<T: Config> Pallet<T> {