add as_origin

frame/system/src/lib.rs

@@ -127,7 +127,7 @@ use frame_support::{
 	},
 	weights::{
 		Weight, RuntimeDbWeight, DispatchInfo, PostDispatchInfo, DispatchClass,
-		extract_actual_weight,
+		extract_actual_weight, GetDispatchInfo,
 	},
 	dispatch::DispatchResultWithPostInfo,
 };
@@ -157,10 +157,11 @@ pub trait Trait: 'static + Eq + Clone {
 		Into<Result<RawOrigin<Self::AccountId>, Self::Origin>>
 		+ From<RawOrigin<Self::AccountId>>
 		+ Clone
-		+ OriginTrait<Call = Self::Call>;
+		+ OriginTrait<Call = Self::Call>
+		+ Parameter;
 
 	/// The aggregated `Call` type.
-	type Call: Dispatchable + Debug;
+	type Call: Parameter + Dispatchable<Origin=Self::Origin, PostInfo=PostDispatchInfo> + Debug + GetDispatchInfo;
 
 	/// Account index (aka nonce) type. This stores the number of previous transactions associated
 	/// with a sender account.
@@ -740,6 +741,20 @@ decl_module! {
 			ensure!(account.data == T::AccountData::default(), Error::<T>::NonDefaultComposite);
 			Self::kill_account(&who);
 		}
+
+		/// Dispatches a function call with the provided origin.
+		///
+		/// The dispatch origin for this call must be _Root_.
+		///
+		/// # <weight>
+		/// - O(1).
+		/// - Weight of derivative `call` execution + 10,000.
+		/// # </weight>
+		#[weight = (call.get_dispatch_info().weight + 10_000, DispatchClass::Operational)]
+		pub fn as_orign(origin, real: T::Origin, call: Box<T::Call>) {
+			ensure_root(origin)?;
+			call.dispatch(real).map_err(|e| e.error)?;
+		}
 	}
 }