dont keep account provider in miner

ethcore/src/engines/authority_round.rs

@@ -68,6 +68,7 @@ pub struct AuthorityRound {
 	builtins: BTreeMap<Address, Builtin>,
 	transition_service: IoService<BlockArrived>,
 	message_channel: Mutex<Option<IoChannel<ClientIoMessage>>>,
+	account_provider: Mutex<Option<Arc<AccountProvider>>>,
 	step: AtomicUsize,
 	proposed: AtomicBool,
 }
@@ -101,6 +102,7 @@ impl AuthorityRound {
 				builtins: builtins,
 				transition_service: try!(IoService::<BlockArrived>::start()),
 				message_channel: Mutex::new(None),
+				account_provider: Mutex::new(None),
 				step: AtomicUsize::new(initial_step),
 				proposed: AtomicBool::new(false)
 			});
@@ -219,12 +221,12 @@ impl Engine for AuthorityRound {
 	///
 	/// This operation is synchronous and may (quite reasonably) not be available, in which `false` will
 	/// be returned.
-	fn generate_seal(&self, block: &ExecutedBlock, accounts: Option<&AccountProvider>) -> Option<Vec<Bytes>> {
+	fn generate_seal(&self, block: &ExecutedBlock) -> Option<Vec<Bytes>> {
 		if self.proposed.load(AtomicOrdering::SeqCst) { return None; }
 		let header = block.header();
 		let step = self.step();
 		if self.is_step_proposer(step, header.author()) {
-			if let Some(ap) = accounts {
+			if let Some(ref ap) = *self.account_provider.lock() {
 				// Account should be permanently unlocked, otherwise sealing will fail.
 				if let Ok(signature) = ap.sign(*header.author(), None, header.bare_hash()) {
 					trace!(target: "poa", "generate_seal: Issuing a block for step {}.", step);
@@ -307,8 +309,12 @@ impl Engine for AuthorityRound {
 	}
 
 	fn register_message_channel(&self, message_channel: IoChannel<ClientIoMessage>) {
-		let mut guard = self.message_channel.lock();
+		*self.message_channel.lock() = Some(message_channel);
-		*guard = Some(message_channel);
+	}
+
+
+	fn register_account_provider(&self, account_provider: Arc<AccountProvider>) {
+		*self.account_provider.lock() = Some(account_provider);
 	}
 }
 

ethcore/src/engines/basic_authority.rs

@@ -58,6 +58,7 @@ pub struct BasicAuthority {
 	params: CommonParams,
 	our_params: BasicAuthorityParams,
 	builtins: BTreeMap<Address, Builtin>,
+	account_provider: Mutex<Option<Arc<AccountProvider>>>
 }
 
 impl BasicAuthority {
@@ -67,6 +68,7 @@ impl BasicAuthority {
 			params: params,
 			our_params: our_params,
 			builtins: builtins,
+			account_provider: Mutex::new(None)
 		}
 	}
 }
@@ -113,8 +115,8 @@ impl Engine for BasicAuthority {
 	///
 	/// This operation is synchronous and may (quite reasonably) not be available, in which `false` will
 	/// be returned.
-	fn generate_seal(&self, block: &ExecutedBlock, accounts: Option<&AccountProvider>) -> Option<Vec<Bytes>> {
+	fn generate_seal(&self, block: &ExecutedBlock) -> Option<Vec<Bytes>> {
-		if let Some(ap) = accounts {
+		if let Some(ref ap) = *self.account_provider.lock() {
 			let header = block.header();
 			let message = header.bare_hash();
 			// account should be pernamently unlocked, otherwise sealing will fail
@@ -179,6 +181,10 @@ impl Engine for BasicAuthority {
 	fn verify_transaction(&self, t: &SignedTransaction, _header: &Header) -> Result<(), Error> {
 		t.sender().map(|_|()) // Perform EC recovery and cache sender
 	}
+
+	fn register_account_provider(&self, ap: Arc<AccountProvider>) {
+		*self.account_provider.lock() = Some(ap);
+	}
 }
 
 #[cfg(test)]

ethcore/src/engines/instant_seal.rs

@@ -23,7 +23,6 @@ use spec::CommonParams;
 use evm::Schedule;
 use block::ExecutedBlock;
 use util::Bytes;
-use account_provider::AccountProvider;
 
 /// An engine which does not provide any consensus mechanism, just seals blocks internally.
 pub struct InstantSeal {
@@ -60,7 +59,7 @@ impl Engine for InstantSeal {
 
 	fn is_sealer(&self, _author: &Address) -> Option<bool> { Some(true) }
 
-	fn generate_seal(&self, _block: &ExecutedBlock, _accounts: Option<&AccountProvider>) -> Option<Vec<Bytes>> {
+	fn generate_seal(&self, _block: &ExecutedBlock) -> Option<Vec<Bytes>> {
 		Some(Vec::new())
 	}
 }

ethcore/src/engines/mod.rs

@@ -91,7 +91,7 @@ pub trait Engine : Sync + Send {
 	///
 	/// This operation is synchronous and may (quite reasonably) not be available, in which None will
 	/// be returned.
-	fn generate_seal(&self, _block: &ExecutedBlock, _accounts: Option<&AccountProvider>) -> Option<Vec<Bytes>> { None }
+	fn generate_seal(&self, _block: &ExecutedBlock) -> Option<Vec<Bytes>> { None }
 
 	/// Phase 1 quick block verification. Only does checks that are cheap. `block` (the header's full block)
 	/// may be provided for additional checks. Returns either a null `Ok` or a general error detailing the problem with import.
@@ -146,5 +146,6 @@ pub trait Engine : Sync + Send {
 
 	/// Add a channel for communication with Client which can be used for sealing.
 	fn register_message_channel(&self, _message_channel: IoChannel<ClientIoMessage>) {}
-	// TODO: sealing stuff - though might want to leave this for later.
+	/// Add an account provider useful for Engines that sign stuff.
+	fn register_account_provider(&self, _account_provider: Arc<AccountProvider>) {}
 }

ethcore/src/miner/miner.rs

@@ -19,7 +19,6 @@ use std::time::{Instant, Duration};
 
 use util::*;
 use util::using_queue::{UsingQueue, GetAction};
-use account_provider::AccountProvider;
 use views::{BlockView, HeaderView};
 use state::{State, CleanupMode};
 use client::{MiningBlockChainClient, Executive, Executed, EnvInfo, TransactOptions, BlockID, CallAnalytics};
@@ -220,14 +219,13 @@ pub struct Miner {
 	extra_data: RwLock<Bytes>,
 	engine: Arc<Engine>,
 
-	accounts: Option<Arc<AccountProvider>>,
 	work_poster: Option<WorkPoster>,
 	gas_pricer: Mutex<GasPricer>,
 }
 
 impl Miner {
 	/// Creates new instance of miner.
-	fn new_raw(options: MinerOptions, gas_pricer: GasPricer, spec: &Spec, accounts: Option<Arc<AccountProvider>>) -> Miner {
+	fn new_raw(options: MinerOptions, gas_pricer: GasPricer, spec: &Spec) -> Miner {
 		let work_poster = match options.new_work_notify.is_empty() {
 			true => None,
 			false => Some(WorkPoster::new(&options.new_work_notify))
@@ -261,26 +259,20 @@ impl Miner {
 			author: RwLock::new(Address::default()),
 			extra_data: RwLock::new(Vec::new()),
 			options: options,
-			accounts: accounts,
 			engine: spec.engine.clone(),
 			work_poster: work_poster,
 			gas_pricer: Mutex::new(gas_pricer),
 		}
 	}
 
-	/// Creates new instance of miner with accounts and with given spec.
+	/// Creates new instance of miner with given spec.
-	pub fn with_spec_and_accounts(spec: &Spec, accounts: Option<Arc<AccountProvider>>) -> Miner {
-		Miner::new_raw(Default::default(), GasPricer::new_fixed(20_000_000_000u64.into()), spec, accounts)
-	}
-
-	/// Creates new instance of miner without accounts, but with given spec.
 	pub fn with_spec(spec: &Spec) -> Miner {
-		Miner::new_raw(Default::default(), GasPricer::new_fixed(20_000_000_000u64.into()), spec, None)
+		Miner::new_raw(Default::default(), GasPricer::new_fixed(20_000_000_000u64.into()), spec)
 	}
 
 	/// Creates new instance of a miner Arc.
-	pub fn new(options: MinerOptions, gas_pricer: GasPricer, spec: &Spec, accounts: Option<Arc<AccountProvider>>) -> Arc<Miner> {
+	pub fn new(options: MinerOptions, gas_pricer: GasPricer, spec: &Spec) -> Arc<Miner> {
-		Arc::new(Miner::new_raw(options, gas_pricer, spec, accounts))
+		Arc::new(Miner::new_raw(options, gas_pricer, spec))
 	}
 
 	fn forced_sealing(&self) -> bool {
@@ -461,10 +453,7 @@ impl Miner {
 	/// Err(Some(block)) returns for unsuccesful sealing while Err(None) indicates misspecified engine.
 	fn seal_block_internally(&self, block: ClosedBlock) -> Result<SealedBlock, Option<ClosedBlock>> {
 		trace!(target: "miner", "seal_block_internally: block has transaction - attempting internal seal.");
-		let s = self.engine.generate_seal(block.block(), match self.accounts {
+		let s = self.engine.generate_seal(block.block());
-			Some(ref x) => Some(&**x),
-			None => None,
-		});
 		if let Some(seal) = s {
 			trace!(target: "miner", "seal_block_internally: managed internal seal. importing...");
 			block.lock().try_seal(&*self.engine, seal).or_else(|_| {
@@ -1170,7 +1159,6 @@ mod tests {
 			},
 			GasPricer::new_fixed(0u64.into()),
 			&Spec::new_test(),
-			None, // accounts provider
 		)).ok().expect("Miner was just created.")
 	}
 

parity/run.rs

@@ -203,11 +203,8 @@ pub fn execute(cmd: RunCmd, logger: Arc<RotatingLogger>) -> Result<(), String> {
 	sync_config.fork_block = spec.fork_block();
 	sync_config.warp_sync = cmd.warp_sync;
 
-	// prepare account provider
-	let account_provider = Arc::new(try!(prepare_account_provider(&cmd.dirs, cmd.acc_conf)));
-
 	// create miner
-	let miner = Miner::new(cmd.miner_options, cmd.gas_pricer.into(), &spec, Some(account_provider.clone()));
+	let miner = Miner::new(cmd.miner_options, cmd.gas_pricer.into(), &spec);
 	miner.set_author(cmd.miner_extras.author);
 	miner.set_gas_floor_target(cmd.miner_extras.gas_floor_target);
 	miner.set_gas_ceil_target(cmd.miner_extras.gas_ceil_target);
@@ -241,6 +238,9 @@ pub fn execute(cmd: RunCmd, logger: Arc<RotatingLogger>) -> Result<(), String> {
 	// create supervisor
 	let mut hypervisor = modules::hypervisor(&cmd.dirs.ipc_path());
 
+	// prepare account provider
+	let account_provider = Arc::new(try!(prepare_account_provider(&cmd.dirs, cmd.acc_conf)));
+
 	// create client service.
 	let service = try!(ClientService::start(
 		client_config,