Add chainSpec RPC methods

crates/subspace-service/Cargo.toml

@@ -24,6 +24,7 @@ pallet-transaction-payment-rpc = { version = "4.0.0-dev", git = "https://github.
 parity-scale-codec = "3.1.5"
 parity-util-mem = { version = "0.12.0", default-features = false, features = ["primitive-types"] }
 sc-basic-authorship = { version = "0.10.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
+sc-chain-spec = { version = "4.0.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-client-api = { version = "4.0.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-consensus = { version = "0.10.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-consensus-fraud-proof = { version = "0.1.0", path = "../sc-consensus-fraud-proof" }
@@ -35,6 +36,7 @@ sc-network = { version = "0.10.0-dev", git = "https://github.com/subspace/substr
 sc-piece-cache = { version = "0.1.0", path = "../sc-piece-cache" }
 sc-rpc = { version = "4.0.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-rpc-api = { version = "0.10.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
+sc-rpc-spec-v2 = { version = "0.10.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-service = { version = "0.10.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f", default-features = false, features = ["wasmtime"] }
 sc-telemetry = { version = "4.0.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-tracing = { version = "4.0.0-dev", git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }

crates/subspace-service/src/lib.rs

@@ -550,11 +550,13 @@ where
             let reward_signing_notification_stream = reward_signing_notification_stream.clone();
             let archived_segment_notification_stream = archived_segment_notification_stream.clone();
             let transaction_pool = transaction_pool.clone();
+            let chain_spec = config.chain_spec.cloned_box();
 
             Box::new(move |deny_unsafe, subscription_executor| {
                 let deps = rpc::FullDeps {
                     client: client.clone(),
                     pool: transaction_pool.clone(),
+                    chain_spec: chain_spec.cloned_box(),
                     deny_unsafe,
                     subscription_executor,
                     new_slot_notification_stream: new_slot_notification_stream.clone(),

crates/subspace-service/src/rpc.rs

@@ -32,6 +32,7 @@ use sc_consensus_subspace_rpc::{SubspaceRpc, SubspaceRpcApiServer};
 use sc_piece_cache::PieceCache;
 use sc_rpc::SubscriptionTaskExecutor;
 use sc_rpc_api::DenyUnsafe;
+use sc_rpc_spec_v2::chain_spec::{ChainSpec, ChainSpecApiServer};
 use sc_transaction_pool_api::TransactionPool;
 use sp_api::ProvideRuntimeApi;
 use sp_block_builder::BlockBuilder;
@@ -48,6 +49,8 @@ pub struct FullDeps<C, P, PC> {
     pub client: Arc<C>,
     /// Transaction pool instance.
     pub pool: Arc<P>,
+    /// A copy of the chain spec.
+    pub chain_spec: Box<dyn sc_chain_spec::ChainSpec>,
     /// Whether to deny unsafe calls.
     pub deny_unsafe: DenyUnsafe,
     /// Executor to drive the subscription manager in the Grandpa RPC handler.
@@ -88,6 +91,7 @@ where
     let FullDeps {
         client,
         pool,
+        chain_spec,
         deny_unsafe,
         subscription_executor,
         new_slot_notification_stream,
@@ -96,6 +100,15 @@ where
         piece_cache,
     } = deps;
 
+    let chain_name = chain_spec.name().to_string();
+    let genesis_hash = client
+        .block_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())?;
+
     module.merge(System::new(client.clone(), pool, deny_unsafe).into_rpc())?;
     module.merge(TransactionPayment::new(client.clone()).into_rpc())?;
 

domains/service/Cargo.toml

@@ -34,12 +34,14 @@ pallet-transaction-payment-rpc = { git = "https://github.com/subspace/substrate"
 substrate-frame-rpc-system = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 
 ## Substrate Client Dependencies
+sc-chain-spec = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-client-api = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-consensus = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-executor = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-network = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-rpc = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-rpc-api = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
+sc-rpc-spec-v2 = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-service = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f", default-features = false, features = ["wasmtime"] }
 sc-telemetry = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }
 sc-transaction-pool = { git = "https://github.com/subspace/substrate", rev = "66d3f73c5ef66c975fa5f54b6736ccd6821e395f" }

domains/service/src/lib.rs

@@ -280,11 +280,13 @@ where
     let rpc_builder = {
         let client = client.clone();
         let transaction_pool = transaction_pool.clone();
+        let chain_spec = secondary_chain_config.chain_spec.cloned_box();
 
         Box::new(move |deny_unsafe, _| {
             let deps = crate::rpc::FullDeps {
                 client: client.clone(),
                 pool: transaction_pool.clone(),
+                chain_spec: chain_spec.cloned_box(),
                 deny_unsafe,
             };
 

domains/service/src/rpc.rs

@@ -7,8 +7,9 @@
 
 use jsonrpsee::RpcModule;
 use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApiServer};
-use sc_client_api::AuxStore;
+use sc_client_api::{AuxStore, BlockBackend};
 use sc_rpc::DenyUnsafe;
+use sc_rpc_spec_v2::chain_spec::{ChainSpec, ChainSpecApiServer};
 use sc_transaction_pool_api::TransactionPool;
 use sp_api::ProvideRuntimeApi;
 use sp_block_builder::BlockBuilder;
@@ -24,6 +25,8 @@ pub struct FullDeps<C, P> {
     pub client: Arc<C>,
     /// Transaction pool instance.
     pub pool: Arc<P>,
+    /// A copy of the chain spec.
+    pub chain_spec: Box<dyn sc_chain_spec::ChainSpec>,
     /// Whether to deny unsafe calls
     pub deny_unsafe: DenyUnsafe,
 }
@@ -34,6 +37,7 @@ pub fn create_full<C, P>(
 ) -> Result<RpcModule<()>, Box<dyn std::error::Error + Send + Sync>>
 where
     C: ProvideRuntimeApi<Block>
+        + BlockBackend<Block>
         + HeaderBackend<Block>
         + AuxStore
         + HeaderMetadata<Block, Error = BlockChainError>
@@ -49,9 +53,19 @@ where
     let FullDeps {
         client,
         pool,
+        chain_spec,
         deny_unsafe,
     } = deps;
 
+    let chain_name = chain_spec.name().to_string();
+    let genesis_hash = client
+        .block_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())?;
+
     module.merge(System::new(client.clone(), pool, deny_unsafe).into_rpc())?;
     module.merge(TransactionPayment::new(client).into_rpc())?;