Allow configuration of when to reseal blocks.

parity/cli.rs

@@ -133,6 +133,12 @@ Sealing/Mining Options:
                            NOTE: MINING WILL NOT WORK WITHOUT THIS OPTION.
   --force-sealing          Force the node to author new blocks as if it were
                            always sealing/mining.
+  --reseal-on-txs          Specify which transactions should force the node
+                           to reseal a block. One of:
+                           none - never reseal on new transactions;
+                           own - reseal only on a new local transaction;
+                           ext - reseal only on a new external transaction;
+                           all - reseal on all new transactions [default: all].
   --usd-per-tx USD         Amount of USD to be paid for a basic transaction
                            [default: 0.005]. The minimum gas price is set
                            accordingly.
@@ -283,6 +289,7 @@ pub struct Args {
 	pub flag_signer_path: String,
 	pub flag_no_token: bool,
 	pub flag_force_sealing: bool,
+	pub flag_reseal_on_txs: String,
 	pub flag_author: Option<String>,
 	pub flag_usd_per_tx: String,
 	pub flag_usd_per_eth: String,

parity/configuration.rs

@@ -27,6 +27,7 @@ use util::*;
 use ethcore::account_provider::AccountProvider;
 use util::network_settings::NetworkSettings;
 use ethcore::client::{append_path, get_db_path, ClientConfig, Switch, VMType};
+use ethcore::miner::MinerOptions;
 use ethcore::ethereum;
 use ethcore::spec::Spec;
 use ethsync::SyncConfig;
@@ -67,6 +68,21 @@ impl Configuration {
 		self.args.flag_maxpeers.unwrap_or(self.args.flag_peers) as u32
 	}
 
+	pub fn miner_options(&self) -> MinerOptions {
+		let (own, ext) = match self.args.flag_reseal_on_txs.as_str() {
+			"none" => (false, false),
+			"own" => (true, false),
+			"ext" => (false, true),
+			"all" => (true, true),
+			x => die!("{}: Invalid value for --reseal option. Use --help for more information.", x)
+		};
+		MinerOptions {
+			force_sealing: self.args.flag_force_sealing,
+			reseal_on_external_tx: ext,
+			reseal_on_own_tx: own,
+		}
+	}
+
 	pub fn author(&self) -> Option<Address> {
 		self.args.flag_etherbase.as_ref()
 			.or(self.args.flag_author.as_ref())

parity/main.rs

@@ -208,7 +208,7 @@ fn execute_client(conf: Configuration, spec: Spec, client_config: ClientConfig)
 	let account_service = Arc::new(conf.account_service());
 
 	// Miner
-	let miner = Miner::new(conf.args.flag_force_sealing, conf.spec(), Some(account_service.clone()));
+	let miner = Miner::new(conf.miner_options(), conf.spec(), Some(account_service.clone()));
 	miner.set_author(conf.author().unwrap_or_default());
 	miner.set_gas_floor_target(conf.gas_floor_target());
 	miner.set_gas_ceil_target(conf.gas_ceil_target());