[Identity] Decouple usernames from identities

cumulus/parachains/runtimes/people/people-rococo/Cargo.toml

@@ -30,6 +30,7 @@ pallet-authorship = { workspace = true }
 pallet-balances = { workspace = true }
 pallet-identity = { workspace = true }
 pallet-message-queue = { workspace = true }
+pallet-migrations = { workspace = true }
 pallet-multisig = { workspace = true }
 pallet-proxy = { workspace = true }
 pallet-session = { workspace = true }
@@ -104,6 +105,7 @@ std = [
 	"pallet-collator-selection/std",
 	"pallet-identity/std",
 	"pallet-message-queue/std",
+	"pallet-migrations/std",
 	"pallet-multisig/std",
 	"pallet-proxy/std",
 	"pallet-session/std",
@@ -154,6 +156,7 @@ runtime-benchmarks = [
 	"pallet-collator-selection/runtime-benchmarks",
 	"pallet-identity/runtime-benchmarks",
 	"pallet-message-queue/runtime-benchmarks",
+	"pallet-migrations/runtime-benchmarks",
 	"pallet-multisig/runtime-benchmarks",
 	"pallet-proxy/runtime-benchmarks",
 	"pallet-timestamp/runtime-benchmarks",
@@ -185,6 +188,7 @@ try-runtime = [
 	"pallet-collator-selection/try-runtime",
 	"pallet-identity/try-runtime",
 	"pallet-message-queue/try-runtime",
+	"pallet-migrations/try-runtime",
 	"pallet-multisig/try-runtime",
 	"pallet-proxy/try-runtime",
 	"pallet-session/try-runtime",

cumulus/parachains/runtimes/people/people-rococo/src/lib.rs

@@ -193,6 +193,7 @@ impl frame_system::Config for Runtime {
 	type SS58Prefix = SS58Prefix;
 	type OnSetCode = cumulus_pallet_parachain_system::ParachainSetCode<Self>;
 	type MaxConsumers = ConstU32<16>;
+	type MultiBlockMigrator = MultiBlockMigrations;
 }
 
 impl pallet_timestamp::Config for Runtime {
@@ -536,6 +537,25 @@ impl identity_migrator::Config for Runtime {
 	type WeightInfo = weights::polkadot_runtime_common_identity_migrator::WeightInfo<Runtime>;
 }
 
+parameter_types! {
+	pub MbmServiceWeight: Weight = Perbill::from_percent(80) * RuntimeBlockWeights::get().max_block;
+}
+
+impl pallet_migrations::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type Migrations = pallet_identity::migration::v2::LazyMigrationV1ToV2<Runtime>;
+	// Benchmarks need mocked migrations to guarantee that they succeed.
+	#[cfg(feature = "runtime-benchmarks")]
+	type Migrations = pallet_migrations::mock_helpers::MockedMigrations;
+	type CursorMaxLen = ConstU32<65_536>;
+	type IdentifierMaxLen = ConstU32<256>;
+	type MigrationStatusHandler = ();
+	type FailedMigrationHandler = frame_support::migrations::FreezeChainOnFailedMigration;
+	type MaxServiceWeight = MbmServiceWeight;
+	type WeightInfo = weights::pallet_migrations::WeightInfo<Runtime>;
+}
+
 // Create the runtime by composing the FRAME pallets that were previously configured.
 construct_runtime!(
 	pub enum Runtime
@@ -571,6 +591,9 @@ construct_runtime!(
 		// The main stage.
 		Identity: pallet_identity = 50,
 
+		// Migrations pallet
+		MultiBlockMigrations: pallet_migrations = 98,
+
 		// To migrate deposits
 		IdentityMigrator: identity_migrator = 248,
 	}
@@ -589,6 +612,7 @@ mod benches {
 		[pallet_session, SessionBench::<Runtime>]
 		[pallet_utility, Utility]
 		[pallet_timestamp, Timestamp]
+		[pallet_migrations, MultiBlockMigrations]
 		[pallet_transaction_payment, TransactionPayment]
 		// Polkadot
 		[polkadot_runtime_common::identity_migrator, IdentityMigrator]

cumulus/parachains/runtimes/people/people-rococo/src/people.rs

@@ -36,6 +36,7 @@ parameter_types! {
 	//   17 | Min size without `IdentityInfo` (accounted for in byte deposit)
 	pub const BasicDeposit: Balance = deposit(1, 17);
 	pub const ByteDeposit: Balance = deposit(0, 1);
+	pub const UsernameDeposit: Balance = deposit(0, 32);
 	pub const SubAccountDeposit: Balance = deposit(1, 53);
 	pub RelayTreasuryAccount: AccountId =
 		parachains_common::TREASURY_PALLET_ID.into_account_truncating();
@@ -46,6 +47,7 @@ impl pallet_identity::Config for Runtime {
 	type Currency = Balances;
 	type BasicDeposit = BasicDeposit;
 	type ByteDeposit = ByteDeposit;
+	type UsernameDeposit = UsernameDeposit;
 	type SubAccountDeposit = SubAccountDeposit;
 	type MaxSubAccounts = ConstU32<100>;
 	type IdentityInformation = IdentityInfo;
@@ -57,6 +59,7 @@ impl pallet_identity::Config for Runtime {
 	type SigningPublicKey = <Signature as Verify>::Signer;
 	type UsernameAuthorityOrigin = EnsureRoot<Self::AccountId>;
 	type PendingUsernameExpiration = ConstU32<{ 7 * DAYS }>;
+	type UsernameGracePeriod = ConstU32<{ 3 * DAYS }>;
 	type MaxSuffixLength = ConstU32<7>;
 	type MaxUsernameLength = ConstU32<32>;
 	type WeightInfo = weights::pallet_identity::WeightInfo<Runtime>;

cumulus/parachains/runtimes/people/people-rococo/src/weights/mod.rs

@@ -25,6 +25,7 @@ pub mod pallet_balances;
 pub mod pallet_collator_selection;
 pub mod pallet_identity;
 pub mod pallet_message_queue;
+pub mod pallet_migrations;
 pub mod pallet_multisig;
 pub mod pallet_proxy;
 pub mod pallet_session;

cumulus/parachains/runtimes/people/people-rococo/src/weights/pallet_identity.rs

@@ -340,7 +340,7 @@ impl<T: frame_system::Config> pallet_identity::WeightInfo for WeightInfo<T> {
 	/// Proof: `Identity::AccountOfUsername` (`max_values`: None, `max_size`: Some(73), added: 2548, mode: `MaxEncodedLen`)
 	/// Storage: `Identity::IdentityOf` (r:1 w:1)
 	/// Proof: `Identity::IdentityOf` (`max_values`: None, `max_size`: Some(7572), added: 10047, mode: `MaxEncodedLen`)
-	fn set_username_for() -> Weight {
+	fn set_username_for(_p: u32, ) -> Weight {
 		// Proof Size summary in bytes:
 		//  Measured:  `80`
 		//  Estimated: `11037`
@@ -368,7 +368,7 @@ impl<T: frame_system::Config> pallet_identity::WeightInfo for WeightInfo<T> {
 	}
 	/// Storage: `Identity::PendingUsernames` (r:1 w:1)
 	/// Proof: `Identity::PendingUsernames` (`max_values`: None, `max_size`: Some(77), added: 2552, mode: `MaxEncodedLen`)
-	fn remove_expired_approval() -> Weight {
+	fn remove_expired_approval(_p: u32, ) -> Weight {
 		// Proof Size summary in bytes:
 		//  Measured:  `106`
 		//  Estimated: `3542`
@@ -392,18 +392,31 @@ impl<T: frame_system::Config> pallet_identity::WeightInfo for WeightInfo<T> {
 			.saturating_add(T::DbWeight::get().reads(2))
 			.saturating_add(T::DbWeight::get().writes(1))
 	}
-	/// Storage: `Identity::AccountOfUsername` (r:1 w:1)
-	/// Proof: `Identity::AccountOfUsername` (`max_values`: None, `max_size`: Some(73), added: 2548, mode: `MaxEncodedLen`)
-	/// Storage: `Identity::IdentityOf` (r:1 w:0)
-	/// Proof: `Identity::IdentityOf` (`max_values`: None, `max_size`: Some(7572), added: 10047, mode: `MaxEncodedLen`)
-	fn remove_dangling_username() -> Weight {
-		// Proof Size summary in bytes:
-		//  Measured:  `126`
-		//  Estimated: `11037`
-		// Minimum execution time: 15_997_000 picoseconds.
-		Weight::from_parts(15_997_000, 0)
-			.saturating_add(Weight::from_parts(0, 11037))
-			.saturating_add(T::DbWeight::get().reads(2))
-			.saturating_add(T::DbWeight::get().writes(1))
+	fn unbind_username() -> Weight {
+		Weight::zero()
+	}
+	fn remove_username() -> Weight {
+		Weight::zero()
+	}
+	fn kill_username(_p: u32, ) -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_authority_step() -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_username_step() -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_identity_step() -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_pending_username_step() -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_cleanup_authority_step() -> Weight {
+		Weight::zero()
+	}
+	fn migration_v2_cleanup_username_step() -> Weight {
+		Weight::zero()
 	}
 }

cumulus/parachains/runtimes/people/people-rococo/src/weights/pallet_migrations.rs

@@ -0,0 +1,172 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Need to rerun!
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{traits::Get, weights::Weight};
+use core::marker::PhantomData;
+
+/// Weight functions for `pallet_migrations`.
+pub struct WeightInfo<T>(PhantomData<T>);
+impl<T: frame_system::Config> pallet_migrations::WeightInfo for WeightInfo<T> {
+	/// Storage: `MultiBlockMigrations::Cursor` (r:1 w:1)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	fn onboard_new_mbms() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `276`
+		//  Estimated: `67035`
+		// Minimum execution time: 7_762_000 picoseconds.
+		Weight::from_parts(8_100_000, 67035)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: `MultiBlockMigrations::Cursor` (r:1 w:0)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	fn progress_mbms_none() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `142`
+		//  Estimated: `67035`
+		// Minimum execution time: 2_077_000 picoseconds.
+		Weight::from_parts(2_138_000, 67035)
+			.saturating_add(T::DbWeight::get().reads(1_u64))
+	}
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Storage: `MultiBlockMigrations::Cursor` (r:0 w:1)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	fn exec_migration_completed() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `134`
+		//  Estimated: `3599`
+		// Minimum execution time: 5_868_000 picoseconds.
+		Weight::from_parts(6_143_000, 3599)
+			.saturating_add(T::DbWeight::get().reads(1_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Storage: `MultiBlockMigrations::Historic` (r:1 w:0)
+	/// Proof: `MultiBlockMigrations::Historic` (`max_values`: None, `max_size`: Some(266), added: 2741, mode: `MaxEncodedLen`)
+	fn exec_migration_skipped_historic() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `330`
+		//  Estimated: `3795`
+		// Minimum execution time: 10_283_000 picoseconds.
+		Weight::from_parts(10_964_000, 3795)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+	}
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Storage: `MultiBlockMigrations::Historic` (r:1 w:0)
+	/// Proof: `MultiBlockMigrations::Historic` (`max_values`: None, `max_size`: Some(266), added: 2741, mode: `MaxEncodedLen`)
+	fn exec_migration_advance() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `276`
+		//  Estimated: `3741`
+		// Minimum execution time: 9_900_000 picoseconds.
+		Weight::from_parts(10_396_000, 3741)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+	}
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Storage: `MultiBlockMigrations::Historic` (r:1 w:1)
+	/// Proof: `MultiBlockMigrations::Historic` (`max_values`: None, `max_size`: Some(266), added: 2741, mode: `MaxEncodedLen`)
+	fn exec_migration_complete() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `276`
+		//  Estimated: `3741`
+		// Minimum execution time: 11_411_000 picoseconds.
+		Weight::from_parts(11_956_000, 3741)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Storage: `MultiBlockMigrations::Historic` (r:1 w:0)
+	/// Proof: `MultiBlockMigrations::Historic` (`max_values`: None, `max_size`: Some(266), added: 2741, mode: `MaxEncodedLen`)
+	/// Storage: `MultiBlockMigrations::Cursor` (r:0 w:1)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	fn exec_migration_fail() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `276`
+		//  Estimated: `3741`
+		// Minimum execution time: 12_398_000 picoseconds.
+		Weight::from_parts(12_910_000, 3741)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	fn on_init_loop() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `0`
+		//  Estimated: `0`
+		// Minimum execution time: 166_000 picoseconds.
+		Weight::from_parts(193_000, 0)
+	}
+	/// Storage: `MultiBlockMigrations::Cursor` (r:0 w:1)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	fn force_set_cursor() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `0`
+		//  Estimated: `0`
+		// Minimum execution time: 2_686_000 picoseconds.
+		Weight::from_parts(2_859_000, 0)
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: `MultiBlockMigrations::Cursor` (r:0 w:1)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	fn force_set_active_cursor() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `0`
+		//  Estimated: `0`
+		// Minimum execution time: 3_070_000 picoseconds.
+		Weight::from_parts(3_250_000, 0)
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: `MultiBlockMigrations::Cursor` (r:1 w:0)
+	/// Proof: `MultiBlockMigrations::Cursor` (`max_values`: Some(1), `max_size`: Some(65550), added: 66045, mode: `MaxEncodedLen`)
+	/// Storage: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	/// Proof: UNKNOWN KEY `0x583359fe0e84d953a9dd84e8addb08a5` (r:1 w:0)
+	fn force_onboard_mbms() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `251`
+		//  Estimated: `67035`
+		// Minimum execution time: 5_901_000 picoseconds.
+		Weight::from_parts(6_320_000, 67035)
+			.saturating_add(T::DbWeight::get().reads(2_u64))
+	}
+	/// Storage: `MultiBlockMigrations::Historic` (r:256 w:256)
+	/// Proof: `MultiBlockMigrations::Historic` (`max_values`: None, `max_size`: Some(266), added: 2741, mode: `MaxEncodedLen`)
+	/// The range of component `n` is `[0, 256]`.
+	fn clear_historic(n: u32, ) -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `1122 + n * (271 ±0)`
+		//  Estimated: `3834 + n * (2740 ±0)`
+		// Minimum execution time: 15_952_000 picoseconds.
+		Weight::from_parts(14_358_665, 3834)
+			// Standard Error: 3_358
+			.saturating_add(Weight::from_parts(1_323_674, 0).saturating_mul(n.into()))
+			.saturating_add(T::DbWeight::get().reads(1_u64))
+			.saturating_add(T::DbWeight::get().reads((1_u64).saturating_mul(n.into())))
+			.saturating_add(T::DbWeight::get().writes((1_u64).saturating_mul(n.into())))
+			.saturating_add(Weight::from_parts(0, 2740).saturating_mul(n.into()))
+	}
+}