Rename polkadot-consensus -> polkadot-validation (#151)

* Initial rename of consensus -> validation * Rename crate imports * network: rename consensus to validation * network: rename consensus in comments and logs * Grumbles * Rename tests consensus -> validation
2026-07-12 13:25:41 +00:00 · 2019-02-21 19:00:06 +00:00
parent 62cf571336
commit 7a619ea222
21 changed files with 158 additions and 157 deletions
@@ -0,0 +1,91 @@
+// Copyright 2017 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/>.
+
+//! Polkadot block evaluation and evaluation errors.
+
+use super::MAX_TRANSACTIONS_SIZE;
+
+use codec::Encode;
+use polkadot_primitives::{Block, Hash, BlockNumber};
+use polkadot_primitives::parachain::Id as ParaId;
+
+error_chain! {
+	links {
+		Client(::client::error::Error, ::client::error::ErrorKind);
+	}
+
+	errors {
+		ProposalNotForPolkadot {
+			description("Proposal provided not a Polkadot block."),
+			display("Proposal provided not a Polkadot block."),
+		}
+		TooManyCandidates(expected: usize, got: usize) {
+			description("Proposal included more candidates than is possible."),
+			display("Proposal included {} candidates for {} parachains", got, expected),
+		}
+		ParachainOutOfOrder {
+			description("Proposal included parachains out of order."),
+			display("Proposal included parachains out of order."),
+		}
+		UnknownParachain(id: ParaId) {
+			description("Proposal included unregistered parachain."),
+			display("Proposal included unregistered parachain {:?}", id),
+		}
+		WrongParentHash(expected: Hash, got: Hash) {
+			description("Proposal had wrong parent hash."),
+			display("Proposal had wrong parent hash. Expected {:?}, got {:?}", expected, got),
+		}
+		WrongNumber(expected: BlockNumber, got: BlockNumber) {
+			description("Proposal had wrong number."),
+			display("Proposal had wrong number. Expected {:?}, got {:?}", expected, got),
+		}
+		ProposalTooLarge(size: usize) {
+			description("Proposal exceeded the maximum size."),
+			display(
+				"Proposal exceeded the maximum size of {} by {} bytes.",
+				MAX_TRANSACTIONS_SIZE, MAX_TRANSACTIONS_SIZE.saturating_sub(*size)
+			),
+		}
+	}
+}
+
+/// Attempt to evaluate a substrate block as a polkadot block, returning error
+/// upon any initial validity checks failing.
+pub fn evaluate_initial(
+	proposal: &Block,
+	_now: u64,
+	parent_hash: &Hash,
+	parent_number: BlockNumber,
+	_active_parachains: &[ParaId],
+) -> Result<()> {
+	let transactions_size = proposal.extrinsics.iter().fold(0, |a, tx| {
+		a + Encode::encode(tx).len()
+	});
+
+	if transactions_size > MAX_TRANSACTIONS_SIZE {
+		bail!(ErrorKind::ProposalTooLarge(transactions_size))
+	}
+
+	if proposal.header.parent_hash != *parent_hash {
+		bail!(ErrorKind::WrongParentHash(*parent_hash, proposal.header.parent_hash));
+	}
+
+	if proposal.header.number != parent_number + 1 {
+		bail!(ErrorKind::WrongNumber(parent_number + 1, proposal.header.number));
+	}
+
+	Ok(())
+}