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// 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/>.
//! Parachain data types.
#[cfg(feature = "std")]
use primitives::bytes;
use primitives;
use rstd::vec::Vec;
/// Unique identifier of a parachain.
#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct Id(u64);
impl From<Id> for u64 {
fn from(x: Id) -> Self { x.0 }
}
impl From<u64> for Id {
fn from(x: u64) -> Self { Id(x) }
}
impl ::codec::Slicable for Id {
fn from_slice(value: &mut &[u8]) -> Option<Self> {
u64::from_slice(value).map(Id)
}
fn as_slice_then<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
self.0.as_slice_then(f)
}
}
/// Candidate parachain block.
///
/// https://github.com/w3f/polkadot-spec/blob/master/spec.md#candidate-para-chain-block
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
#[cfg_attr(feature = "std", serde(rename_all = "camelCase"))]
#[cfg_attr(feature = "std", serde(deny_unknown_fields))]
pub struct Candidate {
/// The ID of the parachain this is a proposal for.
pub parachain_index: Id,
/// Collator's signature
pub collator_signature: ::Signature,
/// Unprocessed ingress queue.
///
/// Ordered by parachain ID and block number.
pub unprocessed_ingress: ConsolidatedIngress,
/// Block data
pub block: BlockData,
}
/// Candidate receipt type.
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Debug, Serialize, Deserialize))]
#[cfg_attr(feature = "std", serde(rename_all = "camelCase"))]
#[cfg_attr(feature = "std", serde(deny_unknown_fields))]
pub struct CandidateReceipt {
/// The ID of the parachain this is a candidate for.
pub parachain_index: Id,
/// The collator's relay-chain account ID
pub collator: ::AccountId,
/// The head-data
pub head_data: HeadData,
/// Balance uploads to the relay chain.
pub balance_uploads: Vec<(::AccountId, u64)>,
/// Egress queue roots.
pub egress_queue_roots: Vec<(Id, primitives::H256)>,
/// Fees paid from the chain to the relay chain validators
pub fees: u64,
}
/// Parachain ingress queue message.
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct Message(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
/// Consolidated ingress queue data.
///
/// This is just an ordered vector of other parachains' egress queues,
/// obtained according to the routing rules.
#[derive(Default, PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct ConsolidatedIngress(pub Vec<(Id, Vec<Message>)>);
/// Parachain block data.
///
/// contains everything required to validate para-block, may contain block and witness data
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct BlockData(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
/// Parachain header raw bytes wrapper type.
#[derive(PartialEq, Eq)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct Header(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
/// Parachain head data included in the chain.
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct HeadData(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
/// Parachain validation code.
#[derive(PartialEq, Eq)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct ValidationCode(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
/// Activitiy bit field
#[derive(PartialEq, Eq, Clone, Default)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug))]
pub struct Activity(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);
impl ::codec::Slicable for Activity {
fn from_slice(value: &mut &[u8]) -> Option<Self> {
Vec::<u8>::from_slice(value).map(Activity)
}
fn as_slice_then<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
self.0.as_slice_then(f)
}
}
#[cfg(test)]
mod tests {
use super::*;
use substrate_serializer as ser;
#[test]
fn test_candidate() {
assert_eq!(ser::to_string_pretty(&Candidate {
parachain_index: 5.into(),
collator_signature: 10.into(),
unprocessed_ingress: ConsolidatedIngress(vec![
(Id(1), vec![Message(vec![2])]),
(Id(2), vec![Message(vec![2]), Message(vec![3])]),
]),
block: BlockData(vec![1, 2, 3]),
}), r#"{
"parachainIndex": 5,
"collatorSignature": "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a",
"unprocessedIngress": [
[
1,
[
"0x02"
]
],
[
2,
[
"0x02",
"0x03"
]
]
],
"block": "0x010203"
}"#);
}
}