mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-01 22:57:23 +00:00
Benjamin Kampmann
60e5011c72
* Adding first rough ouline of the repository structure * Remove old CI stuff * add title * formatting fixes * move node-exits job's script to scripts dir * Move docs into subdir * move to bin * move maintainence scripts, configs and helpers into its own dir * add .local to ignore * move core->client * start up 'test' area * move test client * move test runtime * make test move compile * Add dependencies rule enforcement. * Fix indexing. * Update docs to reflect latest changes * Moving /srml->/paint * update docs * move client/sr-* -> primitives/ * clean old readme * remove old broken code in rhd * update lock * Step 1. * starting to untangle client * Fix after merge. * start splitting out client interfaces * move children and blockchain interfaces * Move trie and state-machine to primitives. * Fix WASM builds. * fixing broken imports * more interface moves * move backend and light to interfaces * move CallExecutor * move cli off client * moving around more interfaces * re-add consensus crates into the mix * fix subkey path * relieve client from executor * starting to pull out client from grandpa * move is_decendent_of out of client * grandpa still depends on client directly * lemme tests pass * rename srml->paint * Make it compile. * rename interfaces->client-api * Move keyring to primitives. * fixup libp2p dep * fix broken use * allow dependency enforcement to fail * move fork-tree * Moving wasm-builder * make env * move build-script-utils * fixup broken crate depdencies and names * fix imports for authority discovery * fix typo * update cargo.lock * fixing imports * Fix paths and add missing crates * re-add missing crates
85 lines
2.9 KiB
Rust
85 lines
2.9 KiB
Rust
// Copyright 2018-2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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//! Block evaluation and evaluation errors.
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use super::MAX_BLOCK_SIZE;
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use codec::Encode;
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use sr_primitives::traits::{Block as BlockT, Header as HeaderT, One, CheckedConversion};
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// This is just a best effort to encode the number. None indicated that it's too big to encode
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// in a u128.
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type BlockNumber = Option<u128>;
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/// Result type alias.
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pub type Result<T> = std::result::Result<T, Error>;
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/// Error type.
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#[derive(Debug, derive_more::Display)]
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pub enum Error {
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/// Proposal provided not a block.
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#[display(fmt="Proposal provided not a block: decoding error: {}", _0)]
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BadProposalFormat(codec::Error),
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/// Proposal had wrong parent hash.
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#[display(fmt="Proposal had wrong parent hash. Expected {:?}, got {:?}", expected, got)]
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WrongParentHash { expected: String, got: String },
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/// Proposal had wrong number.
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#[display(fmt="Proposal had wrong number. Expected {:?}, got {:?}", expected, got)]
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WrongNumber { expected: BlockNumber, got: BlockNumber },
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/// Proposal exceeded the maximum size.
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#[display(
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fmt="Proposal exceeded the maximum size of {} by {} bytes.",
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"MAX_BLOCK_SIZE", "_0.saturating_sub(MAX_BLOCK_SIZE)"
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)]
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ProposalTooLarge(usize),
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}
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impl std::error::Error for Error {}
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/// Attempt to evaluate a substrate block as a node block, returning error
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/// upon any initial validity checks failing.
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pub fn evaluate_initial<Block: BlockT>(
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proposal: &Block,
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parent_hash: &<Block as BlockT>::Hash,
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parent_number: <<Block as BlockT>::Header as HeaderT>::Number,
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) -> Result<()> {
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let encoded = Encode::encode(proposal);
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let proposal = Block::decode(&mut &encoded[..])
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.map_err(|e| Error::BadProposalFormat(e))?;
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if encoded.len() > MAX_BLOCK_SIZE {
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return Err(Error::ProposalTooLarge(encoded.len()))
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}
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if *parent_hash != *proposal.header().parent_hash() {
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return Err(Error::WrongParentHash {
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expected: format!("{:?}", *parent_hash),
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got: format!("{:?}", proposal.header().parent_hash())
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});
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}
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if parent_number + One::one() != *proposal.header().number() {
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return Err(Error::WrongNumber {
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expected: parent_number.checked_into::<u128>().map(|x| x + 1),
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got: (*proposal.header().number()).checked_into::<u128>(),
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});
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}
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Ok(())
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}
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