Async keystore + Authority-Discovery async/await (#7000)

* Asyncify sign_with

* Asyncify generate/get keys

* Complete BareCryptoStore asyncification

* Cleanup

* Rebase

* Add Proxy

* Inject keystore proxy into extensions

* Implement some methods

* Await on send

* Cleanup

* Send result over the oneshot channel sender

* Process one future at a time

* Fix cargo stuff

* Asyncify sr25519_vrf_sign

* Cherry-pick and fix changes

* Introduce SyncCryptoStore

* SQUASH ME WITH THE first commit

* Implement into SyncCryptoStore

* Implement BareCryptoStore for KeystoreProxyAdapter

* authority-discovery

* AURA

* BABE

* finality-grandpa

* offchain-workers

* benchmarking-cli

* sp_io

* test-utils

* application-crypto

* Extensions and RPC

* Client Service

* bin

* Update cargo.lock

* Implement BareCryptoStore on proxy directly

* Simplify proxy setup

* Fix authority-discover

* Pass async keystore to authority-discovery

* Fix tests

* Use async keystore in authority-discovery

* Rename BareCryptoStore to CryptoStore

* WIP

* Remote mutable borrow in CryptoStore trait

* Implement Keystore with backends

* Remove Proxy implementation

* Fix service builder and keystore user-crates

* Fix tests

* Rework authority-discovery after refactoring

* futures::select!

* Fix multiple mut borrows in authority-discovery

* Merge fixes

* Require sync

* Restore Cargo.lock

* PR feedback - round 1

* Remove Keystore and use LocalKeystore directly

Also renamed KeystoreParams to KeystoreContainer

* Join

* Remove sync requirement

* Fix keystore tests

* Fix tests

* client/authority-discovery: Remove event stream dynamic dispatching

With authority-discovery moving from a poll based future to an `async`
future Rust has difficulties propagating the `Sync` trade through the
generated state machine.

Instead of using dynamic dispatching, use a trait parameter to specify
the DHT event stream.

* Make it compile

* Fix submit_transaction

* Fix block_on issue

* Use await in async context

* Fix manual seal keystore

* Fix authoring_blocks test

* fix aura authoring_blocks

* Try to fix tests for auth-discovery

* client/authority-discovery: Fix lookup_throttling test

* client/authority-discovery: Fix triggers_dht_get_query test

* Fix epoch_authorship_works

* client/authority-discovery: Remove timing assumption in unit test

* client/authority-discovery: Revert changes to termination test

* PR feedback

* Remove deadcode and mark test code

* Fix test_sync

* Use the correct keyring type

* Return when from_service stream is closed

* Convert SyncCryptoStore to a trait

* Fix line width

* Fix line width - take 2

* Remove unused import

* Fix keystore instantiation

* PR feedback

* Remove KeystoreContainer

* Revert "Remove KeystoreContainer"

This reverts commit ea4a37c7d74f9772b93d974e05e4498af6192730.

* Take a ref of keystore

* Move keystore to dev-dependencies

* Address some PR feedback

* Missed one

* Pass keystore reference - take 2

* client/finality-grandpa: Use `Arc<dyn CryptoStore>` instead of SyncXXX

Instead of using `SyncCryptoStorePtr` within `client/finality-grandpa`,
which is a type alias for `Arc<dyn SyncCryptoStore>`, use `Arc<dyn
CryptoStore>`. Benefits are:

1. No additional mental overhead of a `SyncCryptoStorePtr`.

2. Ability for new code to use the asynchronous methods of `CryptoStore`
instead of the synchronous `SyncCryptoStore` methods within
`client/finality-granpa` without the need for larger refactorings.

Note: This commit uses `Arc<dyn CryptoStore>` instead of
`CryptoStorePtr`, as I find the type signature more descriptive. This is
subjective and in no way required.

* Remove SyncCryptoStorePtr

* Remove KeystoreContainer & SyncCryptoStorePtr

* PR feedback

* *: Use CryptoStorePtr whereever possible

* *: Define SyncCryptoStore as a pure extension trait of CryptoStore

* Follow up to SyncCryptoStore extension trait

* Adjust docs for SyncCryptoStore as Ben suggested

* Cleanup unnecessary requirements

* sp-keystore

* Use async_std::task::block_on in keystore

* Fix block_on std requirement

* Update primitives/keystore/src/lib.rs

Co-authored-by: Max Inden <mail@max-inden.de>

* Fix wasm build

* Remove unused var

* Fix wasm compilation - take 2

* Revert async-std in keystore

* Fix indent

* Fix version and copyright

* Cleanup feature = "std"

* Auth Discovery: Ignore if from_service is cloed

* Max's suggestion

* Revert async-std usage for block_on

* Address PR feedback

* Fix example offchain worker build

* Address PR feedback

* Update Cargo.lock

* Move unused methods to test helper functions

* Restore accidentally deleted cargo.lock files

* Fix unused imports

Co-authored-by: Max Inden <mail@max-inden.de>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/bin/node-template/node/src/service.rs

@@ -39,7 +39,7 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 >, ServiceError> {
 	let inherent_data_providers = sp_inherents::InherentDataProviders::new();
 
-	let (client, backend, keystore, task_manager) =
+	let (client, backend, keystore_container, task_manager) =
 		sc_service::new_full_parts::<Block, RuntimeApi, Executor>(&config)?;
 	let client = Arc::new(client);
 
@@ -73,8 +73,8 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 	)?;
 
 	Ok(sc_service::PartialComponents {
-		client, backend, task_manager, import_queue, keystore, select_chain, transaction_pool,
-		inherent_data_providers,
+		client, backend, task_manager, import_queue, keystore_container,
+		select_chain, transaction_pool,inherent_data_providers,
 		other: (aura_block_import, grandpa_link),
 	})
 }
@@ -82,8 +82,8 @@ pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponen
 /// Builds a new service for a full client.
 pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 	let sc_service::PartialComponents {
-		client, backend, mut task_manager, import_queue, keystore, select_chain, transaction_pool,
-		inherent_data_providers,
+		client, backend, mut task_manager, import_queue, keystore_container,
+		select_chain, transaction_pool, inherent_data_providers,
 		other: (block_import, grandpa_link),
 	} = new_partial(&config)?;
 
@@ -134,11 +134,11 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 	sc_service::spawn_tasks(sc_service::SpawnTasksParams {
 		network: network.clone(),
 		client: client.clone(),
-		keystore: keystore.clone(),
+		keystore: keystore_container.sync_keystore(),
 		task_manager: &mut task_manager,
 		transaction_pool: transaction_pool.clone(),
 		telemetry_connection_sinks: telemetry_connection_sinks.clone(),
-		rpc_extensions_builder: rpc_extensions_builder,
+		rpc_extensions_builder,
 		on_demand: None,
 		remote_blockchain: None,
 		backend, network_status_sinks, system_rpc_tx, config,
@@ -163,7 +163,7 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 			network.clone(),
 			inherent_data_providers.clone(),
 			force_authoring,
-			keystore.clone(),
+			keystore_container.sync_keystore(),
 			can_author_with,
 		)?;
 
@@ -175,7 +175,7 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 	// if the node isn't actively participating in consensus then it doesn't
 	// need a keystore, regardless of which protocol we use below.
 	let keystore = if role.is_authority() {
-		Some(keystore as sp_core::traits::BareCryptoStorePtr)
+		Some(keystore_container.sync_keystore())
 	} else {
 		None
 	};
@@ -228,7 +228,7 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 
 /// Builds a new service for a light client.
 pub fn new_light(config: Configuration) -> Result<TaskManager, ServiceError> {
-	let (client, backend, keystore, mut task_manager, on_demand) =
+	let (client, backend, keystore_container, mut task_manager, on_demand) =
 		sc_service::new_light_parts::<Block, RuntimeApi, Executor>(&config)?;
 
 	let transaction_pool = Arc::new(sc_transaction_pool::BasicPool::new_light(
@@ -290,7 +290,7 @@ pub fn new_light(config: Configuration) -> Result<TaskManager, ServiceError> {
 		telemetry_connection_sinks: sc_service::TelemetryConnectionSinks::default(),
 		config,
 		client,
-		keystore,
+		keystore: keystore_container.sync_keystore(),
 		backend,
 		network,
 		network_status_sinks,