Parachains v1 registrar module. (#1559)

* Initial commit.

* Fix build

* Add comments, remove Event

* Dont expose calls

* Remove TODO and origins

* Fix merge

* Enable or disable parathread registration

polkadot/runtime/parachains/src/mock.rs

@@ -30,13 +30,16 @@ use frame_support::{
 	weights::Weight, traits::Randomness as RandomnessT,
 };
 use crate::inclusion;
+use crate::paras;
 
 /// A test runtime struct.
 #[derive(Clone, Eq, PartialEq)]
 pub struct Test;
 
 impl_outer_origin! {
-	pub enum Origin for Test { }
+	pub enum Origin for Test {
+		paras
+	}
 }
 
 impl_outer_dispatch! {
@@ -101,7 +104,9 @@ impl crate::initializer::Trait for Test {
 
 impl crate::configuration::Trait for Test { }
 
-impl crate::paras::Trait for Test { }
+impl crate::paras::Trait for Test {
+	type Origin = Origin;
+}
 
 impl crate::router::Trait for Test { }
 

polkadot/runtime/parachains/src/paras.rs

@@ -24,6 +24,7 @@
 //! only occur at session boundaries.
 
 use sp_std::prelude::*;
+use sp_std::result;
 #[cfg(feature = "std")]
 use sp_std::marker::PhantomData;
 use primitives::v1::{
@@ -42,7 +43,14 @@ use sp_core::RuntimeDebug;
 #[cfg(feature = "std")]
 use serde::{Serialize, Deserialize};
 
-pub trait Trait: frame_system::Trait + configuration::Trait { }
+pub use crate::Origin;
+
+pub trait Trait: frame_system::Trait + configuration::Trait {
+	/// The outer origin type.
+	type Origin: From<Origin>
+		+ From<<Self as frame_system::Trait>::Origin>
+		+ Into<result::Result<Origin, <Self as Trait>::Origin>>;
+}
 
 // the two key times necessary to track for every code replacement.
 #[derive(Default, Encode, Decode)]
@@ -206,7 +214,7 @@ decl_storage! {
 		/// Upcoming paras instantiation arguments.
 		UpcomingParasGenesis: map hasher(twox_64_concat) ParaId => Option<ParaGenesisArgs>;
 		/// Paras that are to be cleaned up at the end of the session.
-		OutgoingParas: Vec<ParaId>;
+		OutgoingParas get(fn outgoing_paras): Vec<ParaId>;
 
 	}
 	add_extra_genesis {