Migrate pallet-session to the new pallet macro

frame/session/Cargo.toml

@@ -13,38 +13,40 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = [
-	"derive",
-] }
+log = { version = "0.4.0", default-features = false }
+impl-trait-for-tuples = "0.2.1"
+
+codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-sp-core = { version = "4.0.0-dev", default-features = false, path = "../../primitives/core" }
+
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../../primitives/std" }
+sp-core = { version = "4.0.0-dev", default-features = false, path = "../../primitives/core" }
 sp-io = { version = "4.0.0-dev", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../primitives/runtime" }
 sp-session = { version = "4.0.0-dev", default-features = false, path = "../../primitives/session" }
 sp-staking = { version = "4.0.0-dev", default-features = false, path = "../../primitives/staking" }
+sp-trie = { version = "4.0.0-dev", default-features = false, path = "../../primitives/trie", optional = true }
+
 frame-support = { version = "4.0.0-dev", default-features = false, path = "../support" }
 frame-system = { version = "4.0.0-dev", default-features = false, path = "../system" }
 pallet-timestamp = { version = "4.0.0-dev", default-features = false, path = "../timestamp" }
-sp-trie = { version = "4.0.0-dev", optional = true, default-features = false, path = "../../primitives/trie" }
-log = { version = "0.4.0", default-features = false }
-impl-trait-for-tuples = "0.2.1"
 
 [features]
 default = ["std", "historical"]
 historical = ["sp-trie"]
 std = [
+	"log/std",
 	"codec/std",
 	"scale-info/std",
 	"sp-std/std",
-	"sp-io/std",
-	"frame-support/std",
 	"sp-core/std",
+	"sp-io/std",
 	"sp-runtime/std",
 	"sp-session/std",
 	"sp-staking/std",
-	"pallet-timestamp/std",
 	"sp-trie/std",
-	"log/std",
+	"frame-support/std",
+	"frame-system/std",
+	"pallet-timestamp/std",
 ]
 try-runtime = ["frame-support/try-runtime"]

frame/session/README.md

@@ -1,11 +1,11 @@
-# Session Module
+# Session Pallet
 
 The Session module allows validators to manage their session keys, provides a function for changing
 the session length, and handles session rotation.
 
 - [`session::Trait`](https://docs.rs/pallet-session/latest/pallet_session/trait.Config.html)
 - [`Call`](https://docs.rs/pallet-session/latest/pallet_session/enum.Call.html)
-- [`Module`](https://docs.rs/pallet-session/latest/pallet_session/struct.Module.html)
+- [`Pallet`](https://docs.rs/pallet-session/latest/pallet_session/struct.Pallet.html)
 
 ## Overview
 
@@ -72,11 +72,11 @@ The [Staking pallet](https://docs.rs/pallet-staking/latest/pallet_staking/) uses
 use pallet_session as session;
 
 fn validators<T: pallet_session::Config>() -> Vec<<T as pallet_session::Config>::ValidatorId> {
-	<pallet_session::Module<T>>::validators()
+	<pallet_session::Pallet<T>>::validators()
 }
 ```
 
-## Related Modules
+## Related Pallets
 
 - [Staking](https://docs.rs/pallet-staking/latest/pallet_staking/)
 

frame/session/benchmarking/Cargo.toml

@@ -13,39 +13,37 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-sp-session = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/session" }
-sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/runtime" }
+rand = { version = "0.7.2", default-features = false }
+
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/std" }
-frame-system = { version = "4.0.0-dev", default-features = false, path = "../../system" }
+sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/runtime" }
+sp-session = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/session" }
+
 frame-benchmarking = { version = "4.0.0-dev", default-features = false, path = "../../benchmarking" }
 frame-support = { version = "4.0.0-dev", default-features = false, path = "../../support" }
-pallet-staking = { version = "4.0.0-dev", default-features = false, features = [
-	"runtime-benchmarks",
-], path = "../../staking" }
+frame-system = { version = "4.0.0-dev", default-features = false, path = "../../system" }
 pallet-session = { version = "4.0.0-dev", default-features = false, path = "../../session" }
-rand = { version = "0.7.2", default-features = false }
+pallet-staking = { version = "4.0.0-dev", default-features = false, features = ["runtime-benchmarks"], path = "../../staking" }
 
 [dev-dependencies]
-codec = { package = "parity-scale-codec", version = "2.0.0", features = [
-	"derive",
-] }
+codec = { package = "parity-scale-codec", version = "2.0.0", features = ["derive"] }
 scale-info = "1.0"
 sp-core = { version = "4.0.0-dev", path = "../../../primitives/core" }
-pallet-staking-reward-curve = { version = "4.0.0-dev", path = "../../staking/reward-curve" }
 sp-io = { version = "4.0.0-dev", path = "../../../primitives/io" }
-pallet-timestamp = { version = "4.0.0-dev", path = "../../timestamp" }
 pallet-balances = { version = "4.0.0-dev", path = "../../balances" }
+pallet-timestamp = { version = "4.0.0-dev", path = "../../timestamp" }
+pallet-staking-reward-curve = { version = "4.0.0-dev", path = "../../staking/reward-curve" }
 frame-election-provider-support = { version = "4.0.0-dev", path = "../../election-provider-support" }
 
 [features]
 default = ["std"]
 std = [
 	"sp-std/std",
-	"sp-session/std",
 	"sp-runtime/std",
-	"frame-system/std",
+	"sp-session/std",
 	"frame-benchmarking/std",
 	"frame-support/std",
-	"pallet-staking/std",
+	"frame-system/std",
 	"pallet-session/std",
+	"pallet-staking/std",
 ]

frame/session/benchmarking/src/lib.rs

@@ -30,7 +30,7 @@ use frame_support::{
 	traits::{KeyOwnerProofSystem, OnInitialize},
 };
 use frame_system::RawOrigin;
-use pallet_session::{historical::Module as Historical, Module as Session, *};
+use pallet_session::{historical::Module as Historical, Pallet as Session, *};
 use pallet_staking::{
 	benchmarking::create_validator_with_nominators, testing_utils::create_validators,
 	RewardDestination,
@@ -39,15 +39,15 @@ use sp_runtime::traits::{One, StaticLookup};
 
 const MAX_VALIDATORS: u32 = 1000;
 
-pub struct Pallet<T: Config>(pallet_session::Module<T>);
+pub struct Pallet<T: Config>(pallet_session::Pallet<T>);
 pub trait Config:
 	pallet_session::Config + pallet_session::historical::Config + pallet_staking::Config
 {
 }
 
 impl<T: Config> OnInitialize<T::BlockNumber> for Pallet<T> {
 	fn on_initialize(n: T::BlockNumber) -> frame_support::weights::Weight {
-		pallet_session::Module::<T>::on_initialize(n)
+		pallet_session::Pallet::<T>::on_initialize(n)
 	}
 }
 

frame/session/src/historical/mod.rs

@@ -26,7 +26,7 @@
 //! These roots and proofs of inclusion can be generated at any time during the current session.
 //! Afterwards, the proofs can be fed to a consensus module when reporting misbehavior.
 
-use super::{Module as SessionModule, SessionIndex};
+use super::{Pallet as SessionModule, SessionIndex};
 use codec::{Decode, Encode};
 use frame_support::{
 	decl_module, decl_storage, print,
@@ -114,11 +114,11 @@ impl<T: Config> ValidatorSet<T::AccountId> for Module<T> {
 	type ValidatorIdOf = T::ValidatorIdOf;
 
 	fn session_index() -> sp_staking::SessionIndex {
-		super::Module::<T>::current_index()
+		super::Pallet::<T>::current_index()
 	}
 
 	fn validators() -> Vec<Self::ValidatorId> {
-		super::Module::<T>::validators()
+		super::Pallet::<T>::validators()
 	}
 }
 
@@ -366,11 +366,13 @@ pub(crate) mod tests {
 	use crate::mock::{
 		force_new_session, set_next_validators, Session, System, Test, NEXT_VALIDATORS,
 	};
+
+	use sp_runtime::{key_types::DUMMY, testing::UintAuthorityId};
+
 	use frame_support::{
-		traits::{KeyOwnerProofSystem, OnInitialize},
+		traits::{GenesisBuild, KeyOwnerProofSystem, OnInitialize},
 		BasicExternalities,
 	};
-	use sp_runtime::{key_types::DUMMY, testing::UintAuthorityId};
 
 	type Historical = Module<Test>;
 

frame/session/src/historical/offchain.rs

@@ -30,15 +30,11 @@ use sp_runtime::{
 	KeyTypeId,
 };
 use sp_session::MembershipProof;
-
-use super::{
-	super::{Pallet as SessionModule, SessionIndex},
-	Config, IdentificationTuple, ProvingTrie,
-};
-
-use super::shared;
 use sp_std::prelude::*;
 
+use super::{shared, Config, IdentificationTuple, ProvingTrie};
+use crate::{Pallet as SessionModule, SessionIndex};
+
 /// A set of validators, which was used for a fixed session index.
 struct ValidatorSet<T: Config> {
 	validator_set: Vec<IdentificationTuple<T>>,
@@ -142,23 +138,24 @@ pub fn keep_newest<T: Config>(n_to_keep: usize) {
 
 #[cfg(test)]
 mod tests {
-	use super::{
-		super::{onchain, Module},
-		*,
-	};
-	use crate::mock::{
-		force_new_session, set_next_validators, Session, System, Test, NEXT_VALIDATORS,
+	use super::*;
+	use crate::{
+		historical::{onchain, Module},
+		mock::{force_new_session, set_next_validators, Session, System, Test, NEXT_VALIDATORS},
 	};
+
 	use codec::Encode;
-	use frame_support::traits::{KeyOwnerProofSystem, OnInitialize};
 	use sp_core::{
 		crypto::key_types::DUMMY,
 		offchain::{testing::TestOffchainExt, OffchainDbExt, OffchainWorkerExt, StorageKind},
 	};
-
-	use frame_support::BasicExternalities;
 	use sp_runtime::testing::UintAuthorityId;
 
+	use frame_support::{
+		traits::{GenesisBuild, KeyOwnerProofSystem, OnInitialize},
+		BasicExternalities,
+	};
+
 	type Historical = Module<Test>;
 
 	pub fn new_test_ext() -> sp_io::TestExternalities {

frame/session/src/historical/onchain.rs

@@ -19,15 +19,11 @@
 
 use codec::Encode;
 use sp_runtime::traits::Convert;
-
-use super::{
-	super::{Config as SessionConfig, Pallet as SessionModule, SessionIndex},
-	Config as HistoricalConfig,
-};
-
-use super::shared;
 use sp_std::prelude::*;
 
+use super::{shared, Config as HistoricalConfig};
+use crate::{Config as SessionConfig, Pallet as SessionModule, SessionIndex};
+
 /// Store the validator-set associated to the `session_index` to the off-chain database.
 ///
 /// Further processing is then done [`off-chain side`](super::offchain).

frame/session/src/historical/shared.rs

@@ -18,8 +18,8 @@
 //! Shared logic between on-chain and off-chain components used for slashing using an off-chain
 //! worker.
 
-use super::SessionIndex;
 use codec::Encode;
+use sp_staking::SessionIndex;
 use sp_std::prelude::*;
 
 pub(super) const PREFIX: &[u8] = b"session_historical";