fix: regression of sync_state_genSyncSpec #11435

client/sync-state-rpc/src/lib.rs

@@ -128,7 +128,7 @@ pub struct LightSyncState<Block: BlockT> {
 pub trait SyncStateRpcApi {
  /// Returns the JSON serialized chainspec running the node, with a sync state.
  #[method(name = "sync_state_genSyncSpec")]
- fn system_gen_sync_spec(&self, raw: bool) -> RpcResult<String>;
+ fn system_gen_sync_spec(&self, raw: bool) -> RpcResult<serde_json::Value>;
 }
 
 /// An api for sync state RPC calls.
@@ -185,7 +185,7 @@ where
  Block: BlockT,
  Backend: HeaderBackend<Block> + sc_client_api::AuxStore + 'static,
 {
- fn system_gen_sync_spec(&self, raw: bool) -> RpcResult<String> {
+ fn system_gen_sync_spec(&self, raw: bool) -> RpcResult<serde_json::Value> {
  let current_sync_state = self.build_sync_state()?;
  let mut chain_spec = self.chain_spec.cloned_box();
 
@@ -197,6 +197,9 @@ where
  let val = serde_json::to_value(&current_sync_state)?;
  *extension = Some(val);
 
- chain_spec.as_json(raw).map_err(|e| Error::<Block>::JsonRpc(e).into())
+ chain_spec
+ .as_json(raw)
+ .map(Into::into)
+ .map_err(|e| Error::<Block>::JsonRpc(e).into())
  }
 }