cumulus: Enable ChainSpec for polkadot-parachain

Signed-off-by: Alexandru Vasile <[email protected]>
paritytech · Aug 1, 2024 · cc90001 · cc90001
1 parent 2675d44
commit cc90001
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/cumulus/polkadot-parachain/Cargo.toml b/cumulus/polkadot-parachain/Cargo.toml
@@ -77,6 +77,7 @@ sp-block-builder = { workspace = true, default-features = true }
 sp-keystore = { workspace = true, default-features = true }
 sc-chain-spec = { workspace = true, default-features = true }
 sc-rpc = { workspace = true, default-features = true }
+sc-rpc-spec-v2 = { workspace = true, default-features = true }
 sp-version = { workspace = true, default-features = true }
 sc-tracing = { workspace = true, default-features = true }
 sp-offchain = { workspace = true, default-features = true }

diff --git a/cumulus/polkadot-parachain/src/rpc.rs b/cumulus/polkadot-parachain/src/rpc.rs
@@ -28,6 +28,7 @@ use sc_rpc::{
 	dev::{Dev, DevApiServer},
 	DenyUnsafe,
 };
+use sc_rpc_spec_v2::chain_spec::{ChainSpec, ChainSpecApiServer};
 use std::{marker::PhantomData, sync::Arc};
 use substrate_frame_rpc_system::{System, SystemApiServer};
 use substrate_state_trie_migration_rpc::{StateMigration, StateMigrationApiServer};
@@ -95,6 +96,12 @@ where
 			module.merge(StateMigration::new(client.clone(), backend, deny_unsafe).into_rpc())?;
 			module.merge(Dev::new(client, deny_unsafe).into_rpc())?;
 
+			// RPC spec v2 method.
+			let chain_name = chain_spec.name().to_string();
+			let genesis_hash = client.hash(0).ok().flatten().expect("Genesis block exists; qed");
+			let properties = chain_spec.properties();
+			module.merge(ChainSpec::new(chain_name, genesis_hash, properties).into_rpc())?;
+
 			Ok(module)
 		};
 		build().map_err(Into::into)