133 lines
3.8 KiB
Rust
133 lines
3.8 KiB
Rust
// Copyright (C) Parity Technologies (UK) Ltd.
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// This file is part of Pezkuwi.
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// Pezkuwi 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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// Pezkuwi 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 Pezkuwi. If not, see <http://www.gnu.org/licenses/>.
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//! A generic runtime api subsystem mockup suitable to be used in benchmarks.
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use futures::FutureExt;
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use itertools::Itertools;
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use pezkuwi_node_subsystem::{
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messages::ChainApiMessage, overseer, SpawnedSubsystem, SubsystemError,
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};
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use pezkuwi_node_subsystem_types::OverseerSignal;
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use pezkuwi_primitives::Header;
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use sp_core::H256;
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use std::collections::HashMap;
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const LOG_TARGET: &str = "subsystem-bench::chain-api-mock";
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/// State used to respond to `BlockHeader` requests.
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pub struct ChainApiState {
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pub block_headers: HashMap<H256, Header>,
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}
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pub struct MockChainApi {
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state: ChainApiState,
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}
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impl ChainApiState {
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fn get_header_by_number(&self, requested_number: u32) -> Option<&Header> {
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self.block_headers.values().find(|header| header.number == requested_number)
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}
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}
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impl MockChainApi {
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pub fn new(state: ChainApiState) -> MockChainApi {
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Self { state }
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}
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}
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#[overseer::subsystem(ChainApi, error=SubsystemError, prefix=self::overseer)]
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impl<Context> MockChainApi {
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fn start(self, ctx: Context) -> SpawnedSubsystem {
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let future = self.run(ctx).map(|_| Ok(())).boxed();
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SpawnedSubsystem { name: "test-environment", future }
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}
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}
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#[overseer::contextbounds(ChainApi, prefix = self::overseer)]
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impl MockChainApi {
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async fn run<Context>(self, mut ctx: Context) {
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loop {
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let msg = ctx.recv().await.expect("Overseer never fails us");
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match msg {
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orchestra::FromOrchestra::Signal(signal) =>
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if signal == OverseerSignal::Conclude {
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return;
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},
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orchestra::FromOrchestra::Communication { msg } => {
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gum::debug!(target: LOG_TARGET, msg=?msg, "recv message");
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match msg {
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ChainApiMessage::BlockHeader(hash, response_channel) => {
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let _ = response_channel.send(Ok(Some(
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self.state
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.block_headers
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.get(&hash)
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.cloned()
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.expect("Relay chain block hashes are known"),
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)));
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},
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ChainApiMessage::FinalizedBlockNumber(val) => {
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val.send(Ok(0)).unwrap();
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},
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ChainApiMessage::FinalizedBlockHash(requested_number, sender) => {
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let hash = self
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.state
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.get_header_by_number(requested_number)
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.expect("Unknown block number")
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.hash();
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sender.send(Ok(Some(hash))).unwrap();
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},
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ChainApiMessage::BlockNumber(requested_hash, sender) => {
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sender
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.send(Ok(Some(
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self.state
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.block_headers
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.get(&requested_hash)
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.expect("Unknown block hash")
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.number,
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)))
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.unwrap();
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},
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ChainApiMessage::Ancestors { hash, k: _, response_channel } => {
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let block_number = self
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.state
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.block_headers
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.get(&hash)
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.expect("Unknown block hash")
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.number;
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let ancestors = self
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.state
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.block_headers
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.iter()
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.filter(|(_, header)| header.number < block_number)
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.sorted_by(|a, b| a.1.number.cmp(&b.1.number))
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.map(|(hash, _)| *hash)
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.collect_vec();
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response_channel.send(Ok(ancestors)).unwrap();
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},
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_ => {
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unimplemented!("Unexpected chain-api message")
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},
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}
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},
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}
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}
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}
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}
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