From 1b1eea159078ac59dbe26406bb37645725e15b66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20K=C3=B6cher?= <bkchr@users.noreply.github.com>
Date: Thu, 19 Mar 2020 17:24:31 +0100
Subject: [PATCH] Make `ChainSpec` implement `Send` (#5315)

---
 substrate/client/chain-spec/src/chain_spec.rs |  2 +-
 substrate/client/chain-spec/src/lib.rs        |  2 +-
 substrate/client/service/test/src/lib.rs      | 10 +++++-----
 substrate/utils/browser/src/lib.rs            |  2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/substrate/client/chain-spec/src/chain_spec.rs b/substrate/client/chain-spec/src/chain_spec.rs
index 008af6f7e0..33f217cb4e 100644
--- a/substrate/client/chain-spec/src/chain_spec.rs
+++ b/substrate/client/chain-spec/src/chain_spec.rs
@@ -318,7 +318,7 @@ impl<G: RuntimeGenesis, E: serde::Serialize + Clone> ChainSpec<G, E> {
 impl<G, E> crate::ChainSpec for ChainSpec<G, E>
 where
 	G: RuntimeGenesis,
-	E: GetExtension + serde::Serialize + Clone,
+	E: GetExtension + serde::Serialize + Clone + Send,
 {
 	fn boot_nodes(&self) -> &[String] {
 		ChainSpec::boot_nodes(self)
diff --git a/substrate/client/chain-spec/src/lib.rs b/substrate/client/chain-spec/src/lib.rs
index 509524fd0a..353c386f36 100644
--- a/substrate/client/chain-spec/src/lib.rs
+++ b/substrate/client/chain-spec/src/lib.rs
@@ -125,7 +125,7 @@ pub trait RuntimeGenesis: Serialize + DeserializeOwned + BuildStorage {}
 impl<T: Serialize + DeserializeOwned + BuildStorage> RuntimeGenesis for T {}
 
 /// Common interface to `GenericChainSpec`
-pub trait ChainSpec: BuildStorage {
+pub trait ChainSpec: BuildStorage + Send {
 	/// Spec name.
 	fn name(&self) -> &str;
 	/// Spec id.
diff --git a/substrate/client/service/test/src/lib.rs b/substrate/client/service/test/src/lib.rs
index 0a29bc7bf2..537d446477 100644
--- a/substrate/client/service/test/src/lib.rs
+++ b/substrate/client/service/test/src/lib.rs
@@ -131,7 +131,7 @@ where F: Send + 'static, L: Send +'static, U: Clone + Send + 'static
 	}
 }
 
-fn node_config<G: RuntimeGenesis + 'static, E: ChainSpecExtension + Clone + 'static> (
+fn node_config<G: RuntimeGenesis + 'static, E: ChainSpecExtension + Clone + 'static + Send> (
 	index: usize,
 	spec: &GenericChainSpec<G, E>,
 	role: Roles,
@@ -219,7 +219,7 @@ fn node_config<G: RuntimeGenesis + 'static, E: ChainSpecExtension + Clone + 'sta
 impl<G, E, F, L, U> TestNet<G, E, F, L, U> where
 	F: AbstractService,
 	L: AbstractService,
-	E: ChainSpecExtension + Clone + 'static,
+	E: ChainSpecExtension + Clone + 'static + Send,
 	G: RuntimeGenesis + 'static,
 {
 	fn new(
@@ -324,7 +324,7 @@ pub fn connectivity<G, E, Fb, F, Lb, L>(
 	full_builder: Fb,
 	light_builder: Lb,
 ) where
-	E: ChainSpecExtension + Clone + 'static,
+	E: ChainSpecExtension + Clone + 'static + Send,
 	G: RuntimeGenesis + 'static,
 	Fb: Fn(Configuration) -> Result<F, Error>,
 	F: AbstractService,
@@ -432,7 +432,7 @@ pub fn sync<G, E, Fb, F, Lb, L, B, ExF, U>(
 	B: FnMut(&F, &mut U),
 	ExF: FnMut(&F, &U) -> <F::Block as BlockT>::Extrinsic,
 	U: Clone + Send + 'static,
-	E: ChainSpecExtension + Clone + 'static,
+	E: ChainSpecExtension + Clone + 'static + Send,
 	G: RuntimeGenesis + 'static,
 {
 	const NUM_FULL_NODES: usize = 10;
@@ -503,7 +503,7 @@ pub fn consensus<G, E, Fb, F, Lb, L>(
 	F: AbstractService,
 	Lb: Fn(Configuration) -> Result<L, Error>,
 	L: AbstractService,
-	E: ChainSpecExtension + Clone + 'static,
+	E: ChainSpecExtension + Clone + 'static + Send,
 	G: RuntimeGenesis + 'static,
 {
 	const NUM_FULL_NODES: usize = 10;
diff --git a/substrate/utils/browser/src/lib.rs b/substrate/utils/browser/src/lib.rs
index c9c159efe3..3a0162bd90 100644
--- a/substrate/utils/browser/src/lib.rs
+++ b/substrate/utils/browser/src/lib.rs
@@ -38,7 +38,7 @@ pub async fn browser_configuration<G, E>(chain_spec: GenericChainSpec<G, E>)
 	-> Result<Configuration, Box<dyn std::error::Error>>
 where
 	G: RuntimeGenesis + 'static,
-	E: Extension + 'static,
+	E: Extension + 'static + Send,
 {
 	let name = chain_spec.name().to_string();