Check whether we need resealing in miner and unwrap has_account in account_provider (#8853)

* Remove unused Result wrap in has_account

* Check whether we need to reseal for external transactions

* Fix reference to has_account interface

* typo: missing )

* Refactor duplicates to prepare_and_update_sealing

* Fix build

ethcore/src/account_provider/mod.rs

@@ -272,8 +272,8 @@ impl AccountProvider {
 	}
 
 	/// Checks whether an account with a given address is present.
-	pub fn has_account(&self, address: Address) -> Result<bool, Error> {
-		Ok(self.sstore.account_ref(&address).is_ok() && !self.blacklisted_accounts.contains(&address))
+	pub fn has_account(&self, address: Address) -> bool {
+		self.sstore.account_ref(&address).is_ok() && !self.blacklisted_accounts.contains(&address)
 	}
 
 	/// Returns addresses of all accounts.

ethcore/src/miner/miner.rs

@@ -700,6 +700,20 @@ impl Miner {
 		// Return if we restarted
 		prepare_new
 	}
+
+	/// Prepare pending block, check whether sealing is needed, and then update sealing.
+	fn prepare_and_update_sealing<C: miner::BlockChainClient>(&self, chain: &C) {
+		use miner::MinerService;
+
+		// Make sure to do it after transaction is imported and lock is dropped.
+		// We need to create pending block and enable sealing.
+		if self.engine.seals_internally().unwrap_or(false) || !self.prepare_pending_block(chain) {
+			// If new block has not been prepared (means we already had one)
+			// or Engine might be able to seal internally,
+			// we need to update sealing.
+			self.update_sealing(chain);
+		}
+	}
 }
 
 const SEALING_TIMEOUT_IN_BLOCKS : u64 = 5;
@@ -766,12 +780,12 @@ impl miner::MinerService for Miner {
 			transactions.into_iter().map(pool::verifier::Transaction::Unverified).collect(),
 		);
 
+		// --------------------------------------------------------------------------
+		// | NOTE Code below requires sealing locks.                                |
+		// | Make sure to release the locks before calling that method.             |
+		// --------------------------------------------------------------------------
 		if !results.is_empty() && self.options.reseal_on_external_tx &&	self.sealing.lock().reseal_allowed() {
-			// --------------------------------------------------------------------------
-			// | NOTE Code below requires sealing locks.                                |
-			// | Make sure to release the locks before calling that method.             |
-			// --------------------------------------------------------------------------
-			self.update_sealing(chain);
+			self.prepare_and_update_sealing(chain);
 		}
 
 		results
@@ -796,14 +810,7 @@ impl miner::MinerService for Miner {
 		// | Make sure to release the locks before calling that method.             |
 		// --------------------------------------------------------------------------
 		if imported.is_ok() && self.options.reseal_on_own_tx && self.sealing.lock().reseal_allowed() {
-			// Make sure to do it after transaction is imported and lock is droped.
-			// We need to create pending block and enable sealing.
-			if self.engine.seals_internally().unwrap_or(false) || !self.prepare_pending_block(chain) {
-				// If new block has not been prepared (means we already had one)
-				// or Engine might be able to seal internally,
-				// we need to update sealing.
-				self.update_sealing(chain);
-			}
+			self.prepare_and_update_sealing(chain);
 		}
 
 		imported

ethcore/src/miner/pool_client.rs

@@ -124,7 +124,7 @@ impl<'a, C: 'a> pool::client::Client for PoolClient<'a, C> where
 		pool::client::AccountDetails {
 			nonce: self.cached_nonces.account_nonce(address),
 			balance: self.chain.latest_balance(address),
-			is_local: self.accounts.map_or(false, |accounts| accounts.has_account(*address).unwrap_or(false)),
+			is_local: self.accounts.map_or(false, |accounts| accounts.has_account(*address)),
 		}
 	}
 

ethcore/src/snapshot/tests/proof_of_authority.rs

@@ -214,7 +214,7 @@ fn fixed_to_contract_only() {
 		secret!("dog42"),
 	]);
 
-	assert!(provider.has_account(*RICH_ADDR).unwrap());
+	assert!(provider.has_account(*RICH_ADDR));
 
 	let client = make_chain(provider, 3, vec![
 		Transition::Manual(3, vec![addrs[2], addrs[3], addrs[5], addrs[7]]),
@@ -247,7 +247,7 @@ fn fixed_to_contract_to_contract() {
 		secret!("dog42"),
 	]);
 
-	assert!(provider.has_account(*RICH_ADDR).unwrap());
+	assert!(provider.has_account(*RICH_ADDR));
 
 	let client = make_chain(provider, 3, vec![
 		Transition::Manual(3, vec![addrs[2], addrs[3], addrs[5], addrs[7]]),

parity/run.rs

@@ -533,7 +533,7 @@ fn execute_impl<Cr, Rr>(cmd: RunCmd, logger: Arc<RotatingLogger>, on_client_rq:
 	let engine_signer = cmd.miner_extras.engine_signer;
 	if engine_signer != Default::default() {
 		// Check if engine signer exists
-		if !account_provider.has_account(engine_signer).unwrap_or(false) {
+		if !account_provider.has_account(engine_signer) {
 			return Err(format!("Consensus signer account not found for the current chain. {}", build_create_account_hint(&cmd.spec, &cmd.dirs.keys)));
 		}
 
@@ -1028,7 +1028,7 @@ fn prepare_account_provider(spec: &SpecType, dirs: &Directories, data_dir: &str,
 
 	for a in cfg.unlocked_accounts {
 		// Check if the account exists
-		if !account_provider.has_account(a).unwrap_or(false) {
+		if !account_provider.has_account(a) {
 			return Err(format!("Account {} not found for the current chain. {}", a, build_create_account_hint(spec, &dirs.keys)));
 		}
 
@@ -1053,7 +1053,7 @@ fn prepare_account_provider(spec: &SpecType, dirs: &Directories, data_dir: &str,
 fn insert_dev_account(account_provider: &AccountProvider) {
 	let secret: ethkey::Secret = "4d5db4107d237df6a3d58ee5f70ae63d73d7658d4026f2eefd2f204c81682cb7".into();
 	let dev_account = ethkey::KeyPair::from_secret(secret.clone()).expect("Valid secret produces valid key;qed");
-	if let Ok(false) = account_provider.has_account(dev_account.address()) {
+	if !account_provider.has_account(dev_account.address()) {
 		match account_provider.insert_account(secret, "") {
 			Err(e) => warn!("Unable to add development account: {}", e),
 			Ok(address) => {

parity/secretstore.rs

@@ -144,7 +144,7 @@ mod server {
 					KeyPair::from_secret(secret).map_err(|e| format!("invalid secret: {}", e))?)),
 				Some(NodeSecretKey::KeyStore(account)) => {
 					// Check if account exists
-					if !deps.account_provider.has_account(account.clone()).unwrap_or(false) {
+					if !deps.account_provider.has_account(account.clone()) {
 						return Err(format!("Account {} passed as secret store node key is not found", account));
 					}