Keystore overhaul (iter 2) (#13634)

* Remove bloat about remote keystore

* Update docs and remove unused 'KeystoreRef' trait

* Use wherever possible, MemoryKeystore for testing

* Remove unrequired fully qualified method syntax for Keystore

substrate/client/cli/src/commands/insert_key.rs

@@ -24,8 +24,7 @@ use clap::Parser;
 use sc_keystore::LocalKeystore;
 use sc_service::config::{BasePath, KeystoreConfig};
 use sp_core::crypto::{KeyTypeId, SecretString};
-use sp_keystore::{Keystore, KeystorePtr};
-use std::sync::Arc;
+use sp_keystore::KeystorePtr;
 
 /// The `insert` command
 #[derive(Debug, Clone, Parser)]
@@ -67,9 +66,9 @@ impl InsertKeyCmd {
 		let config_dir = base_path.config_dir(chain_spec.id());
 
 		let (keystore, public) = match self.keystore_params.keystore_config(&config_dir)? {
-			(_, KeystoreConfig::Path { path, password }) => {
+			KeystoreConfig::Path { path, password } => {
 				let public = with_crypto_scheme!(self.scheme, to_vec(&suri, password.clone()))?;
-				let keystore: KeystorePtr = Arc::new(LocalKeystore::open(path, password)?);
+				let keystore: KeystorePtr = LocalKeystore::open(path, password)?.into();
 				(keystore, public)
 			},
 			_ => unreachable!("keystore_config always returns path and password; qed"),
@@ -78,7 +77,8 @@ impl InsertKeyCmd {
 		let key_type =
 			KeyTypeId::try_from(self.key_type.as_str()).map_err(|_| Error::KeyTypeInvalid)?;
 
-		Keystore::insert(&*keystore, key_type, &suri, &public[..])
+		keystore
+			.insert(key_type, &suri, &public[..])
 			.map_err(|_| Error::KeystoreOperation)?;
 
 		Ok(())
@@ -95,6 +95,7 @@ mod tests {
 	use super::*;
 	use sc_service::{ChainSpec, ChainType, GenericChainSpec, NoExtension};
 	use sp_core::{sr25519::Pair, ByteArray, Pair as _};
+	use sp_keystore::Keystore;
 	use tempfile::TempDir;
 
 	struct Cli;

substrate/client/cli/src/config.rs

@@ -185,10 +185,10 @@ pub trait CliConfiguration<DCV: DefaultConfigurationValues = ()>: Sized {
 	///
 	/// By default this is retrieved from `KeystoreParams` if it is available. Otherwise it uses
 	/// `KeystoreConfig::InMemory`.
-	fn keystore_config(&self, config_dir: &PathBuf) -> Result<(Option<String>, KeystoreConfig)> {
+	fn keystore_config(&self, config_dir: &PathBuf) -> Result<KeystoreConfig> {
 		self.keystore_params()
 			.map(|x| x.keystore_config(config_dir))
-			.unwrap_or_else(|| Ok((None, KeystoreConfig::InMemory)))
+			.unwrap_or_else(|| Ok(KeystoreConfig::InMemory))
 	}
 
 	/// Get the database cache size.
@@ -505,7 +505,7 @@ pub trait CliConfiguration<DCV: DefaultConfigurationValues = ()>: Sized {
 		let role = self.role(is_dev)?;
 		let max_runtime_instances = self.max_runtime_instances()?.unwrap_or(8);
 		let is_validator = role.is_authority();
-		let (keystore_remote, keystore) = self.keystore_config(&config_dir)?;
+		let keystore = self.keystore_config(&config_dir)?;
 		let telemetry_endpoints = self.telemetry_endpoints(&chain_spec)?;
 		let runtime_cache_size = self.runtime_cache_size()?;
 
@@ -524,7 +524,6 @@ pub trait CliConfiguration<DCV: DefaultConfigurationValues = ()>: Sized {
 				node_key,
 				DCV::p2p_listen_port(),
 			)?,
-			keystore_remote,
 			keystore,
 			database: self.database_config(&config_dir, database_cache_size, database)?,
 			trie_cache_maximum_size: self.trie_cache_maximum_size()?,

substrate/client/cli/src/params/keystore_params.rs

@@ -68,9 +68,7 @@ pub fn secret_string_from_str(s: &str) -> std::result::Result<SecretString, Stri
 
 impl KeystoreParams {
 	/// Get the keystore configuration for the parameters
-	///
-	/// Returns a vector of remote-urls and the local Keystore configuration
-	pub fn keystore_config(&self, config_dir: &Path) -> Result<(Option<String>, KeystoreConfig)> {
+	pub fn keystore_config(&self, config_dir: &Path) -> Result<KeystoreConfig> {
 		let password = if self.password_interactive {
 			Some(SecretString::new(input_keystore_password()?))
 		} else if let Some(ref file) = self.password_filename {
@@ -85,7 +83,7 @@ impl KeystoreParams {
 			.clone()
 			.unwrap_or_else(|| config_dir.join(DEFAULT_KEYSTORE_CONFIG_PATH));
 
-		Ok((self.keystore_uri.clone(), KeystoreConfig::Path { path, password }))
+		Ok(KeystoreConfig::Path { path, password })
 	}
 
 	/// helper method to fetch password from `KeyParams` or read from stdin

substrate/client/cli/src/runner.rs

@@ -345,7 +345,6 @@ mod tests {
 				transaction_pool: Default::default(),
 				network: NetworkConfiguration::new_memory(),
 				keystore: sc_service::config::KeystoreConfig::InMemory,
-				keystore_remote: None,
 				database: sc_client_db::DatabaseSource::ParityDb { path: PathBuf::from("db") },
 				trie_cache_maximum_size: None,
 				state_pruning: None,