Minimal switch of substrate-node to GRANDPA /Aura (#1128)

* add beginnings of SRML grandpa library

* get srml-grandpa compiling

* tests for srml-grandpa

* add optional session integration to grandpa SRML

* start integration into node runtime

* Allow extracting pending change from header digest

* Make it compile on wasm

* make tests compile again

* Move Authority Key fetching into service, simplify service factory construction

* Generalize Authority Consensus Setup system

* Add Authority Setup Docs

* Allow CLI params to be extensible

 - move params to structopts
 - split parsing and default command execution
 - add custom config to node
 - extended parsing of custom config
 - extending params via structop's flatten

* Minor fixes on cli extension params:
 - added docs
 - re-add actual app name, rather than node-name
 - make strategy and subcommand optional

* better cli params

* synchronize GRANDPA and normal node authorities

* Implement grandpa::network for gossip consensus

* run_grandpa in Node

* Fix missed merge error

* Integrate grandpa import queue

* more specific type def

* link up linkhalf and import block

* make grandpa future send

* get compiling

* Fix new params convention and license header

* get it running

* rebuild node runtime WASM

* change logging level

* Update node/cli/src/params.rs

Co-Authored-By: rphmeier <rphmeier@gmail.com>

* Update node/cli/src/params.rs

Co-Authored-By: rphmeier <rphmeier@gmail.com>

* Update node/cli/src/lib.rs

Co-Authored-By: rphmeier <rphmeier@gmail.com>

* Update node/runtime/src/lib.rs

Co-Authored-By: rphmeier <rphmeier@gmail.com>

* Update node/cli/src/lib.rs

Co-Authored-By: rphmeier <rphmeier@gmail.com>

* Clean up and Fixme for mutable config

* Move GrandpaService Integration into grandpa, feature gated but on per default

* Fixing grandpa runtime module test

* Update wasm runtime hashes for tests

* GRANDPA: use post-header hash when logging scheduled changes

* add an extra bit of logging to authorities

* fixing missing constrain

* remove old code

* move `NewAuthorities` to an event in srml-grandpa

* fix node-executor tests to use grandpa log

* Remove GossipConsensus from tests, use newly provided sync-feature, fixes tests

* Update to latest wasm runtimes

* address grumbles

* address grumbles

* only derive deserialize when using std

* Clean up use of Deserialize

substrate/core/finality-grandpa/src/tests.rs

@@ -158,11 +158,15 @@ fn make_topic(round: u64, set_id: u64) -> Hash {
 }
 
 impl Network for MessageRouting {
-	type In = Box<Stream<Item=Vec<u8>,Error=()>>;
+	type In = Box<Stream<Item=Vec<u8>,Error=()> + Send>;
 
 	fn messages_for(&self, round: u64, set_id: u64) -> Self::In {
-		let messages = self.inner.lock().peer(self.peer_id)
-			.with_spec(|spec, _| spec.gossip.messages_for(make_topic(round, set_id)));
+		let inner = self.inner.lock();
+		let peer = inner.peer(self.peer_id);
+		let mut gossip = peer.consensus_gossip().write();
+		let messages = peer.with_spec(move |_, _| {
+			gossip.messages_for(make_topic(round, set_id))
+		});
 
 		let messages = messages.map_err(
 			move |_| panic!("Messages for round {} dropped too early", round)
@@ -179,8 +183,12 @@ impl Network for MessageRouting {
 
 	fn drop_messages(&self, round: u64, set_id: u64) {
 		let topic = make_topic(round, set_id);
-		self.inner.lock().peer(self.peer_id)
-			.with_spec(|spec, _| spec.gossip.collect_garbage(|t| t == &topic));
+		let inner = self.inner.lock();
+		let peer = inner.peer(self.peer_id);
+		let mut gossip = peer.consensus_gossip().write();
+		peer.with_spec(move |_, _| {
+			gossip.collect_garbage(|t| t == &topic)
+		});
 	}
 }
 
@@ -318,6 +326,8 @@ fn finalize_3_voters_no_observers() {
 				.take_while(|n| Ok(n.header.number() < &20))
 				.for_each(|_| Ok(()))
 		);
+		fn assert_send<T: Send>(_: &T) { }
+
 		let voter = run_grandpa(
 			Config {
 				gossip_duration: TEST_GOSSIP_DURATION,
@@ -328,6 +338,8 @@ fn finalize_3_voters_no_observers() {
 			MessageRouting::new(net.clone(), peer_id),
 		).expect("all in order with client and network");
 
+		assert_send(&voter);
+
 		runtime.spawn(voter);
 	}