made account principal optional

paritytech/substrate#10403

parachain/pallets/basic-channel/src/outbound/mod.rs

@@ -103,15 +103,15 @@ pub mod pallet {
  /// Fee for accepting a message
  #[pallet::storage]
  #[pallet::getter(fn principal)]
- pub type Principal<T: Config> = StorageValue<_, T::AccountId, ValueQuery>;
+ pub type Principal<T: Config> = StorageValue<_, Option<T::AccountId>, ValueQuery>;
 
  #[pallet::storage]
  pub type Nonce<T: Config> = StorageValue<_, u64, ValueQuery>;
 
  #[pallet::genesis_config]
  pub struct GenesisConfig<T: Config> {
  pub interval: T::BlockNumber,
- pub principal: T::AccountId,
+ pub principal: Option<T::AccountId>,
  }
 
  #[cfg(feature = "std")]
@@ -153,15 +153,17 @@ pub mod pallet {
  ) -> DispatchResult {
  T::SetPrincipalOrigin::ensure_origin(origin)?;
  let principal = T::Lookup::lookup(principal)?;
- <Principal<T>>::put(principal);
+ <Principal<T>>::put(Some(principal));
  Ok(())
  }
  }
 
  impl<T: Config> Pallet<T> {
  /// Submit message on the outbound channel
  pub fn submit(who: &T::AccountId, target: H160, payload: &[u8]) -> DispatchResult {
- ensure!(*who == Self::principal(), Error::<T>::NotAuthorized,);
+ let principal = Self::principal();
+ ensure!(principal.is_some(), Error::<T>::NotAuthorized,);
+ ensure!(*who == principal.unwrap(), Error::<T>::NotAuthorized,);
  ensure!(
  <MessageQueue<T>>::decode_len().unwrap_or(0)
  < T::MaxMessagesPerCommit::get() as usize,