mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-28 20:17:57 +00:00
Tomasz Drwięga
e9177294f6
* Initial validator trait. * Add missing docs warning. * Fix formatting. * Fix validator output and serialization. * Get rid of redundant ValidationCode type.
105 lines
2.8 KiB
Rust
105 lines
2.8 KiB
Rust
// Copyright 2017 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot 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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// Polkadot 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 Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//! Validator primitives.
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use bytes;
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/// Parachain incoming messages.
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#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
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pub struct IngressPosts(#[serde(with="bytes")] pub Vec<u8>);
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/// Parachain incoming messages delta.
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#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
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pub struct IngressPostsDelta(#[serde(with="bytes")] pub Vec<u8>);
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/// Parachain outgoing messages.
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#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
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pub struct EgressPosts(#[serde(with="bytes")] pub Vec<u8>);
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/// Validity result of particular proof and ingress queue.
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#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(tag="type", content="data")]
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pub enum ProofValidity {
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/// The proof is invalid.
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#[serde(rename="invalid")]
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Invalid,
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#[serde(rename="valid")]
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/// The proof is processed and new egress queue is created.
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/// Also includes current ingress queue delta.
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Valid(IngressPostsDelta, EgressPosts),
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}
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impl ProofValidity {
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/// The proof is valid.
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pub fn is_valid(&self) -> bool {
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match *self {
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ProofValidity::Invalid => false,
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ProofValidity::Valid(..) => true,
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}
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}
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}
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impl From<Option<(IngressPostsDelta, EgressPosts)>> for ProofValidity {
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fn from(posts: Option<(IngressPostsDelta, EgressPosts)>) -> Self {
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match posts {
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Some((delta, posts)) => ProofValidity::Valid(delta, posts),
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None => ProofValidity::Invalid,
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}
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}
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}
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// TODO [ToDr] This shouldn't be here!
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/// Validator logic.
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pub trait Validator {
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/// Validation error.
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type Error: ::std::error::Error;
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/// Validates if the provided proof holds given a current ingress queue.
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///
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/// In case of success produces egress posts.
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fn validate(
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&self,
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messages: &IngressPosts,
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proof: &::parachain::Proof,
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code: &[u8],
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) -> Result<ProofValidity, Self::Error>;
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use polkadot_serializer as ser;
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#[test]
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fn test_proof_validity_serialization() {
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assert_eq!(
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ser::to_string_pretty(&ProofValidity::Invalid),
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r#"{
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"type": "invalid"
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}"#);
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assert_eq!(
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ser::to_string_pretty(&ProofValidity::Valid(IngressPostsDelta(vec![1]), EgressPosts(vec![1, 2, 3]))),
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r#"{
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"type": "valid",
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"data": [
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"0x01",
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"0x010203"
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]
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}"#);
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}
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}
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