Staking Miner (#3141)

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com> Co-authored-by: Peter Goodspeed-Niklaus <peter.r.goodspeedniklaus@gmail.com>
2026-06-15 08:01:09 +00:00 · 2021-07-01 21:22:35 +02:00
parent ad46aadb1a
commit 505145efd3
16 changed files with 1194 additions and 37 deletions
@@ -0,0 +1,52 @@
+// Copyright 2021 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Polkadot is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+
+//! The emergency-solution command.
+
+use crate::{prelude::*, SharedConfig, Error};
+use std::io::Write;
+use codec::Encode;
+
+macro_rules! emergency_solution_cmd_for { ($runtime:ident) => { paste::paste! {
+	/// Execute the emergency-solution command.
+	pub(crate) async fn [<emergency_solution_cmd_ $runtime>](
+		shared: SharedConfig,
+	) -> Result<(), Error> {
+		use $crate::[<$runtime _runtime_exports>]::*;
+		let mut ext = crate::create_election_ext::<Runtime, Block>(shared.uri.clone(), None, false).await?;
+		ext.execute_with(|| {
+			assert!(EPM::Pallet::<Runtime>::current_phase().is_emergency());
+			// NOTE: this internally calls feasibility_check, but we just re-do it here as an easy way
+			// to get a `ReadySolution`.
+			let (raw_solution, _) = <EPM::Pallet<Runtime>>::mine_solution(50)?;
+			log::info!(target: LOG_TARGET, "mined solution with {:?}", &raw_solution.score);
+			let ready_solution = EPM::Pallet::<Runtime>::feasibility_check(raw_solution, EPM::ElectionCompute::Signed)?;
+			let encoded_ready = ready_solution.encode();
+			let encoded_support = ready_solution.supports.encode();
+			let mut solution_file = std::fs::File::create("solution.bin")?;
+			let mut supports_file = std::fs::File::create("solution.supports.bin")?;
+			solution_file.write_all(&encoded_ready)?;
+			supports_file.write_all(&encoded_support)?;
+			log::info!(target: LOG_TARGET, "ReadySolution: size {:?} / score = {:?}", encoded_ready.len(), ready_solution.score);
+			log::trace!(target: LOG_TARGET, "Supports: {}", sp_core::hexdisplay::HexDisplay::from(&encoded_support));
+			Ok(())
+		})
+	}
+}}}
+
+emergency_solution_cmd_for!(polkadot);
+emergency_solution_cmd_for!(kusama);
+emergency_solution_cmd_for!(westend);