sc-chain-spec: deprecated code removed (#4410)

This PR removes deprecated code:
- The `RuntimeGenesisConfig` generic type parameter in
`GenericChainSpec` struct.
- `ChainSpec::from_genesis` method allowing to create chain-spec using
closure providing runtime genesis struct
- `GenesisSource::Factory` variant together with no longer needed
`GenesisSource`'s generic parameter `G` (which was intended to be a
runtime genesis struct).


https://github.com/paritytech/polkadot-sdk/blob/17b56fae2d976a3df87f34076875de8c26da0355/substrate/client/chain-spec/src/chain_spec.rs#L559-L563

cumulus/polkadot-parachain/src/chain_spec/mod.rs

@@ -54,7 +54,7 @@ impl Extensions {
 }
 
 /// Generic chain spec for all polkadot-parachain runtimes
-pub type GenericChainSpec = sc_service::GenericChainSpec<(), Extensions>;
+pub type GenericChainSpec = sc_service::GenericChainSpec<Extensions>;
 
 /// Helper function to generate a crypto pair from seed
 pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {

cumulus/polkadot-parachain/src/command.rs

@@ -1017,7 +1017,7 @@ mod tests {
 		cfg_file_path
 	}
 
-	pub type DummyChainSpec<E> = sc_service::GenericChainSpec<(), E>;
+	pub type DummyChainSpec<E> = sc_service::GenericChainSpec<E>;
 
 	pub fn create_default_with_extensions<E: Extension>(
 		id: &str,

cumulus/test/service/src/chain_spec.rs

@@ -17,7 +17,7 @@
 #![allow(missing_docs)]
 
 use cumulus_primitives_core::ParaId;
-use cumulus_test_runtime::{AccountId, RuntimeGenesisConfig, Signature};
+use cumulus_test_runtime::{AccountId, Signature};
 use parachains_common::AuraId;
 use sc_chain_spec::{ChainSpecExtension, ChainSpecGroup};
 use sc_service::ChainType;
@@ -26,7 +26,7 @@ use sp_core::{sr25519, Pair, Public};
 use sp_runtime::traits::{IdentifyAccount, Verify};
 
 /// Specialized `ChainSpec` for the normal parachain runtime.
-pub type ChainSpec = sc_service::GenericChainSpec<RuntimeGenesisConfig, Extensions>;
+pub type ChainSpec = sc_service::GenericChainSpec<Extensions>;
 
 /// Helper function to generate a crypto pair from seed
 pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {

polkadot/node/service/src/chain_spec.rs

@@ -70,11 +70,11 @@ pub struct Extensions {
 }
 
 // Generic chain spec, in case when we don't have the native runtime.
-pub type GenericChainSpec = service::GenericChainSpec<(), Extensions>;
+pub type GenericChainSpec = service::GenericChainSpec<Extensions>;
 
 /// The `ChainSpec` parameterized for the westend runtime.
 #[cfg(feature = "westend-native")]
-pub type WestendChainSpec = service::GenericChainSpec<(), Extensions>;
+pub type WestendChainSpec = service::GenericChainSpec<Extensions>;
 
 /// The `ChainSpec` parameterized for the westend runtime.
 // Dummy chain spec, but that is fine when we don't have the native runtime.
@@ -83,7 +83,7 @@ pub type WestendChainSpec = GenericChainSpec;
 
 /// The `ChainSpec` parameterized for the rococo runtime.
 #[cfg(feature = "rococo-native")]
-pub type RococoChainSpec = service::GenericChainSpec<(), Extensions>;
+pub type RococoChainSpec = service::GenericChainSpec<Extensions>;
 
 /// The `ChainSpec` parameterized for the rococo runtime.
 // Dummy chain spec, but that is fine when we don't have the native runtime.

polkadot/node/service/src/lib.rs

@@ -100,8 +100,8 @@ pub use sc_executor::NativeExecutionDispatch;
 use sc_executor::{HeapAllocStrategy, WasmExecutor, DEFAULT_HEAP_ALLOC_STRATEGY};
 pub use service::{
 	config::{DatabaseSource, PrometheusConfig},
-	ChainSpec, Configuration, Error as SubstrateServiceError, PruningMode, Role, RuntimeGenesis,
-	TFullBackend, TFullCallExecutor, TFullClient, TaskManager, TransactionPoolOptions,
+	ChainSpec, Configuration, Error as SubstrateServiceError, PruningMode, Role, TFullBackend,
+	TFullCallExecutor, TFullClient, TaskManager, TransactionPoolOptions,
 };
 pub use sp_api::{ApiRef, ConstructRuntimeApi, Core as CoreApi, ProvideRuntimeApi};
 pub use sp_runtime::{

polkadot/node/test/service/src/chain_spec.rs

@@ -33,7 +33,7 @@ use test_runtime_constants::currency::DOTS;
 const DEFAULT_PROTOCOL_ID: &str = "dot";
 
 /// The `ChainSpec` parameterized for polkadot test runtime.
-pub type PolkadotChainSpec = sc_service::GenericChainSpec<(), Extensions>;
+pub type PolkadotChainSpec = sc_service::GenericChainSpec<Extensions>;
 
 /// Returns the properties for the [`PolkadotChainSpec`].
 pub fn polkadot_chain_spec_properties() -> serde_json::map::Map<String, serde_json::Value> {

prdoc/pr_4410.prdoc

@@ -0,0 +1,37 @@
+title: "[sc-chain-spec] Remove deprecated code"
+
+doc:
+  - audience: Node Dev
+    description: |
+      The RuntimeGenesisConfig generic type parameter was removed from GenericChainSpec struct.
+      ChainSpec::from_genesis method was removed.
+      Removed related deprecated code from `sc-chain-spec`.
+      This change simplifies the codebase and ensures the use of up-to-date definitions.
+
+crates:
+  - name: sc-service
+    bump: minor
+  - name: minimal-template-node
+    bump: minor
+  - name: sc-cli
+    bump: patch
+  - name: polkadot-test-service
+    bump: major
+  - name: sc-service-test
+    bump: major
+  - name: staging-node-cli
+    bump: major
+  - name: parachain-template-node
+    bump: minor
+  - name: solochain-template-node
+    bump: minor
+  - name: polkadot-parachain-bin
+    bump: major
+  - name: polkadot-service
+    bump: major
+  - name: sc-consensus-grandpa
+    bump: patch
+  - name: cumulus-test-service
+    bump: minor
+  - name: sc-chain-spec
+    bump: major

substrate/bin/node/cli/src/chain_spec.rs

@@ -64,7 +64,7 @@ pub struct Extensions {
 }
 
 /// Specialized `ChainSpec`.
-pub type ChainSpec = sc_service::GenericChainSpec<RuntimeGenesisConfig, Extensions>;
+pub type ChainSpec = sc_service::GenericChainSpec<Extensions>;
 /// Flaming Fir testnet generator
 pub fn flaming_fir_config() -> Result<ChainSpec, String> {
 	ChainSpec::from_json_bytes(&include_bytes!("../res/flaming-fir.json")[..])

substrate/client/chain-spec/Cargo.toml

@@ -42,3 +42,4 @@ substrate-test-runtime = { path = "../../test-utils/runtime" }
 sp-keyring = { path = "../../primitives/keyring" }
 sp-application-crypto = { default-features = false, path = "../../primitives/application-crypto", features = ["serde"] }
 sp-consensus-babe = { default-features = false, path = "../../primitives/consensus/babe", features = ["serde"] }
+regex = "1.6.0"