Add CLI option and route to MinerOptions.

parity/cli.rs

@@ -169,6 +169,8 @@ Sealing/Mining Options:
                            more than 32 characters.
   --tx-queue-size LIMIT    Maximum amount of transactions in the queue (waiting
                            to be included in next block) [default: 1024].
+  --notify-work URLS       URLs to which work package notifications are pushed.
+                           URLS should be a comma-delimited list of HTTP URLs.
 
 Footprint Options:
   --tracing BOOL           Indicates if full transaction tracing should be
@@ -320,6 +322,7 @@ pub struct Args {
 	pub flag_gas_cap: String,
 	pub flag_extra_data: Option<String>,
 	pub flag_tx_queue_size: usize,
+	pub flag_work_notify: Option<String>,
 	pub flag_logging: Option<String>,
 	pub flag_version: bool,
 	pub flag_from: String,

parity/configuration.rs

@@ -84,6 +84,10 @@ impl Configuration {
 		)
 	}
 
+	pub fn work_notify(&self) -> Vec<String> {
+		self.args.flag_work_notify.as_ref().map_or_else(Vec::new, |s| s.split(',').map(|s| s.to_owned()).collect())
+	}
+
 	pub fn miner_options(&self) -> MinerOptions {
 		let (own, ext) = match self.args.flag_reseal_on_txs.as_str() {
 			"none" => (false, false),
@@ -93,6 +97,7 @@ impl Configuration {
 			x => die!("{}: Invalid value for --reseal option. Use --help for more information.", x)
 		};
 		MinerOptions {
+			new_work_notify: self.work_notify(),
 			force_sealing: self.args.flag_force_sealing,
 			reseal_on_external_tx: ext,
 			reseal_on_own_tx: own,