Broker new price adapter (#4521)

Fixes #4360 Also rename: AllowedRenewals -> PotentialRenewals to avoid confusion of future readers. (An entry in `AllowedRenewals` is not enough to allow a renewal, the assignment also has to be complete, which is only checked afterwards.) - [x] Does not work with renewals as is - fix. - [x] More tests - [x] PR docs Edit 1: (Relevant blog post: https://grillapp.net/12935/agile-coretime-pricing-explained-166522?ref=29715) --------- Co-authored-by: eskimor <eskimor@no-such-url.com> Co-authored-by: Dónal Murray <donal.murray@parity.io> Co-authored-by: command-bot <>
paritytech · May 29, 2024 · f4dc8d2 · f4dc8d2
1 parent d5053ac
commit f4dc8d2
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Showing 21 changed files with 703 additions and 395 deletions.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/cumulus/parachains/runtimes/coretime/coretime-rococo/src/coretime.rs b/cumulus/parachains/runtimes/coretime/coretime-rococo/src/coretime.rs
@@ -232,5 +232,5 @@ impl pallet_broker::Config for Runtime {
 	type WeightInfo = weights::pallet_broker::WeightInfo<Runtime>;
 	type PalletId = BrokerPalletId;
 	type AdminOrigin = EnsureRoot<AccountId>;
-	type PriceAdapter = pallet_broker::Linear;
+	type PriceAdapter = pallet_broker::CenterTargetPrice<Balance>;
 }
diff --git a/cumulus/parachains/runtimes/coretime/coretime-rococo/src/lib.rs b/cumulus/parachains/runtimes/coretime/coretime-rococo/src/lib.rs
@@ -112,6 +112,7 @@ pub type Migrations = (
 	cumulus_pallet_xcmp_queue::migration::v4::MigrationToV4<Runtime>,
 	cumulus_pallet_xcmp_queue::migration::v5::MigrateV4ToV5<Runtime>,
 	pallet_broker::migration::MigrateV0ToV1<Runtime>,
+	pallet_broker::migration::MigrateV1ToV2<Runtime>,
 	// permanent
 	pallet_xcm::migration::MigrateToLatestXcmVersion<Runtime>,
 );

diff --git a/cumulus/parachains/runtimes/coretime/coretime-rococo/src/weights/pallet_broker.rs b/cumulus/parachains/runtimes/coretime/coretime-rococo/src/weights/pallet_broker.rs
@@ -154,8 +154,8 @@ impl<T: frame_system::Config> pallet_broker::WeightInfo for WeightInfo<T> {
 	/// Proof: `Broker::Status` (`max_values`: Some(1), `max_size`: Some(18), added: 513, mode: `MaxEncodedLen`)
 	/// Storage: `Broker::SaleInfo` (r:1 w:1)
 	/// Proof: `Broker::SaleInfo` (`max_values`: Some(1), `max_size`: Some(57), added: 552, mode: `MaxEncodedLen`)
-	/// Storage: `Broker::AllowedRenewals` (r:1 w:2)
-	/// Proof: `Broker::AllowedRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
+	/// Storage: `Broker::PotentialRenewals` (r:1 w:2)
+	/// Proof: `Broker::PotentialRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
 	/// Storage: `System::Account` (r:1 w:0)
 	/// Proof: `System::Account` (`max_values`: None, `max_size`: Some(128), added: 2603, mode: `MaxEncodedLen`)
 	/// Storage: `Broker::Workplan` (r:0 w:1)
@@ -337,8 +337,8 @@ impl<T: frame_system::Config> pallet_broker::WeightInfo for WeightInfo<T> {
 	}
 	/// Storage: `Broker::Status` (r:1 w:0)
 	/// Proof: `Broker::Status` (`max_values`: Some(1), `max_size`: Some(18), added: 513, mode: `MaxEncodedLen`)
-	/// Storage: `Broker::AllowedRenewals` (r:1 w:1)
-	/// Proof: `Broker::AllowedRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
+	/// Storage: `Broker::PotentialRenewals` (r:1 w:1)
+	/// Proof: `Broker::PotentialRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
 	fn drop_renewal() -> Weight {
 		// Proof Size summary in bytes:
 		//  Measured:  `957`

diff --git a/cumulus/parachains/runtimes/coretime/coretime-westend/src/coretime.rs b/cumulus/parachains/runtimes/coretime/coretime-westend/src/coretime.rs
@@ -245,5 +245,5 @@ impl pallet_broker::Config for Runtime {
 	type WeightInfo = weights::pallet_broker::WeightInfo<Runtime>;
 	type PalletId = BrokerPalletId;
 	type AdminOrigin = EnsureRoot<AccountId>;
-	type PriceAdapter = pallet_broker::Linear;
+	type PriceAdapter = pallet_broker::CenterTargetPrice<Balance>;
 }
diff --git a/cumulus/parachains/runtimes/coretime/coretime-westend/src/lib.rs b/cumulus/parachains/runtimes/coretime/coretime-westend/src/lib.rs
@@ -111,6 +111,7 @@ pub type Migrations = (
 	pallet_collator_selection::migration::v2::MigrationToV2<Runtime>,
 	cumulus_pallet_xcmp_queue::migration::v4::MigrationToV4<Runtime>,
 	pallet_broker::migration::MigrateV0ToV1<Runtime>,
+	pallet_broker::migration::MigrateV1ToV2<Runtime>,
 	// permanent
 	pallet_xcm::migration::MigrateToLatestXcmVersion<Runtime>,
 );

diff --git a/cumulus/parachains/runtimes/coretime/coretime-westend/src/weights/pallet_broker.rs b/cumulus/parachains/runtimes/coretime/coretime-westend/src/weights/pallet_broker.rs
@@ -152,8 +152,8 @@ impl<T: frame_system::Config> pallet_broker::WeightInfo for WeightInfo<T> {
 	/// Proof: `Broker::Status` (`max_values`: Some(1), `max_size`: Some(18), added: 513, mode: `MaxEncodedLen`)
 	/// Storage: `Broker::SaleInfo` (r:1 w:1)
 	/// Proof: `Broker::SaleInfo` (`max_values`: Some(1), `max_size`: Some(57), added: 552, mode: `MaxEncodedLen`)
-	/// Storage: `Broker::AllowedRenewals` (r:1 w:2)
-	/// Proof: `Broker::AllowedRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
+	/// Storage: `Broker::PotentialRenewals` (r:1 w:2)
+	/// Proof: `Broker::PotentialRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
 	/// Storage: `System::Account` (r:1 w:0)
 	/// Proof: `System::Account` (`max_values`: None, `max_size`: Some(128), added: 2603, mode: `MaxEncodedLen`)
 	/// Storage: `Broker::Workplan` (r:0 w:1)
@@ -335,8 +335,8 @@ impl<T: frame_system::Config> pallet_broker::WeightInfo for WeightInfo<T> {
 	}
 	/// Storage: `Broker::Status` (r:1 w:0)
 	/// Proof: `Broker::Status` (`max_values`: Some(1), `max_size`: Some(18), added: 513, mode: `MaxEncodedLen`)
-	/// Storage: `Broker::AllowedRenewals` (r:1 w:1)
-	/// Proof: `Broker::AllowedRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
+	/// Storage: `Broker::PotentialRenewals` (r:1 w:1)
+	/// Proof: `Broker::PotentialRenewals` (`max_values`: None, `max_size`: Some(1233), added: 3708, mode: `MaxEncodedLen`)
 	fn drop_renewal() -> Weight {
 		// Proof Size summary in bytes:
 		//  Measured:  `556`

diff --git a/prdoc/pr_4521.prdoc b/prdoc/pr_4521.prdoc
@@ -0,0 +1,28 @@
+title: AdaptPrice trait is now price controlled
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      The broker pallet price adaptation interface is changed to be less opinionated and more
+      information is made available to the `AdaptPrice` trait. A new example impl is included which
+      adapts the price based not on the number of cores sold, but rather on the price that was
+      achieved during the sale to mitigate a potential price manipulation vector. More information
+      here:
+
+        https://github.com/paritytech/polkadot-sdk/issues/4360
+
+  - audience: Runtime User
+    description: |
+      The price controller of the Rococo and Westend Coretime chain will be
+      adjusted with this release. This will very likely be used in the
+      fellowship production runtime to have a much larger leadin. This fixes a
+      price manipulation issue we discovered with the Kusama launch.
+
+crates:
+  - name: pallet-broker
+    bump: minor
+  - name: coretime-rococo-runtime
+    bump: minor
+  - name: coretime-westend-runtime
+    bump: minor
+
diff --git a/substrate/bin/node/runtime/src/lib.rs b/substrate/bin/node/runtime/src/lib.rs
@@ -2145,7 +2145,7 @@ impl pallet_broker::Config for Runtime {
 	type WeightInfo = ();
 	type PalletId = BrokerPalletId;
 	type AdminOrigin = EnsureRoot<AccountId>;
-	type PriceAdapter = pallet_broker::Linear;
+	type PriceAdapter = pallet_broker::CenterTargetPrice<Balance>;
 }
 
 parameter_types! {

diff --git a/substrate/frame/broker/Cargo.toml b/substrate/frame/broker/Cargo.toml
@@ -30,6 +30,7 @@ frame-system = { path = "../system", default-features = false }
 
 [dev-dependencies]
 sp-io = { path = "../../primitives/io" }
+sp-tracing = { path = "../../primitives/tracing" }
 pretty_assertions = "1.3.0"
 
 [features]