grandpa-rpc don't share subscription manager, only executor (#7039)

* service builder: fix todo about jsonrpc Option workaround

* grandpa-rpc: only share executor instead of sub manager

* grandpa-rpc: fix compilation

* grandpa-rpc: rename to subscription_executor

* node/cli: remove another unused jsonrpc dependency

* grandpa: apply style fixes from code review

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

substrate/bin/node/cli/Cargo.toml

@@ -38,8 +38,6 @@ codec = { package = "parity-scale-codec", version = "1.3.4" }
 serde = { version = "1.0.102", features = ["derive"] }
 futures = { version = "0.3.1", features = ["compat"] }
 hex-literal = "0.3.1"
-jsonrpc-core = "14.2.0"
-jsonrpc-pubsub = "14.2.0"
 log = "0.4.8"
 rand = "0.7.2"
 structopt = { version = "0.3.8", optional = true }

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

@@ -51,7 +51,7 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 	(
 		impl Fn(
 			node_rpc::DenyUnsafe,
-			jsonrpc_pubsub::manager::SubscriptionManager
+			sc_rpc::SubscriptionTaskExecutor,
 		) -> node_rpc::IoHandler,
 		(
 			sc_consensus_babe::BabeBlockImport<Block, FullClient, FullGrandpaBlockImport>,
@@ -119,7 +119,7 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 		let select_chain = select_chain.clone();
 		let keystore = keystore.clone();
 
-		let rpc_extensions_builder = move |deny_unsafe, subscriptions| {
+		let rpc_extensions_builder = move |deny_unsafe, subscription_executor| {
 			let deps = node_rpc::FullDeps {
 				client: client.clone(),
 				pool: pool.clone(),
@@ -134,7 +134,7 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 					shared_voter_state: shared_voter_state.clone(),
 					shared_authority_set: shared_authority_set.clone(),
 					justification_stream: justification_stream.clone(),
-					subscriptions,
+					subscription_executor,
 				},
 			};