openethereum/parity/light_helpers/epoch_fetch.rs

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// Copyright 2015-2019 Parity Technologies (UK) Ltd.
// This file is part of Parity Ethereum.
// Parity Ethereum 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.
// Parity Ethereum 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 Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
use std::sync::{Arc, Weak};
use ethcore::{
engines::{EthEngine, StateDependentProof},
machine::EthereumMachine,
};
use sync::{LightNetworkDispatcher, LightSync};
use types::{encoded, header::Header, receipt::Receipt};
use futures::{future, future::Either, Future};
use light::{
client::fetch::ChainDataFetcher,
fix(light): make `OnDemand` generic instead of using the concrete type (#10514) * ethcore: add clique engine (#9981) * fix broken sync * correct seal fields * ethcore: fix comment * parity: remove duplicate params * clique: fix whitespaces * ethcore: fix goerli chain spec * refactor signer_snapshot into pending/finalized state * move close_block_extra_data after seal is applied * refactor most of the logic into the signer_snapshot * clique: refactor locking logic out of the consensus engine interface * Fix jsonspec and add an unittest * Replace space with tabs * Unbroke sync * Fix broken sync * 1/2 state tracking without votes * 2/2 implement vote tracking * ci: use travis for goerli * ci: setup a clique network * ci: sync a görli node * add clique deploy script * ci: fix paths in clique deploy script * ci: use docker compose * ci: fix travis job names * ci: fix build deps * ci: massively reduce tests * Revert "ci: massively reduce tests" This reverts commit 6369f0b069ed2607a7e9f2e1d85489bacdc43384. * ci: run cargo test directly * ci: separate build and test stages * ci: cache rust installation * ci: simplify ci stages * ci: make clique deploy script executable * ci: shutdown goerli sync after 20min * ci: remove slow sync stage * ci: use timeout to finish jobs * ci: fix build path * ci: use absolute paths to end this confusion * ci: add geth and parity to path * ci: be more verbose * ci: allow for more relaxed caching timeout * ci: update repositories for custom ppa * ci: fix typo in file name * ci: fix docker compose file * ci: add ethkey to docker * ci: make sure deploy script is up to date with upstream * ci: stop docker container after certain time * ci: force superuser to update permissions on docker files * ci: reduce run time of script to ~30 min * ci: remove duplicate caching in travis * remove trace statements * clique: add more validation involving the recent signer list * ethcore: enable constantinople for rinkeby * ethcore: fix whitespaces in rinkeby spec * ethcore: reformat goerli.json * Revert "ci: remove duplicate caching in travis" This reverts commit a562838d3d194d37f9871dcbe00b783637978f89. * tmp commit * another tmp commit * it builds! * add sealing capabilities * add seal_header hook to allow separation of block seal/importing code paths * clique: remove populate_from_parent. * add panic * make turn delay random * initialize OpenBlock properly in 'enact' * misc: remove duplicate lines * misc: fix license headers * misc: convert spaces to tabs * misc: fix tabs * Update Cargo.toml * Update Cargo.toml * Update Cargo.toml * clique: ensure validator restores state before trying to seal * clique: make 'state' return an Error. Make some error messages more clear * Fix compile error after rebase & toolchain upgrade * fix a bunch of import warnings * Refactor code * Fix permissions * Refactoring syncing * Implement full validator checks * Refactor util functions to seperate file * mining 1 * ethcore: add chainspec for kotti * ethcore: rename pre-goerli configs * ethcore: load kotti chain spec * cli: add kotti to params * Implement working local sealing * making sealing & syncing work together * Relax timestamp checking * ethcore: prepare for the real goerli to launch * Implement NOTURN wiggle properly & cleanupnup warnings * Implement vote casting * Update docs & skip signing if no signer * Optimize step-service interval * Record state on local sealed block * Fix script filemode * Cleaning up codebase * restore enact trace logging * Delete clique.sh and move sync.sh * remove travis.yml * Remove dead code * Cleanup compile warning * address review comments * adding more comments and removing unwrap() * ci: remove sync script * Address review comments * fix compile error * adding better debugging for timing * Implement an dedicated thread for sealing timing * fix(add helper for timestamp overflows) (#10330) * fix(add helper timestamp overflows) * fix(simplify code) * fix(make helper private) * snap: official image / test (#10168) * official image / test * fix / test * bit more necromancy * fix paths * add source bin/df /test * add source bin/df /test2 * something w paths /test * something w paths /test * add source-type /test * show paths /test * copy plugin /test * plugin -> nil * install rhash * no questions while installing rhash * publish snap only for release * fix(docker): fix not receives SIGINT (#10059) * fix(docker): fix not receives SIGINT * fix: update with reviews * update with review * update * update * Don't add discovery initiators to the node table (#10305) * Don't add discovery initiators to the node table * Use enums for tracking state of the nodes in discovery * Dont try to ping ourselves * Fix minor nits * Update timeouts when observing an outdated node * Extracted update_bucket_record from update_node * Fixed typo * Fix two final nits from @todr * change docker image based on debian instead of ubuntu due to the chan… (#10336) * change docker image based on debian instead of ubuntu due to the changes of the build container * role back docker build image and docker deploy image to ubuntu:xenial based (#10338) * Bundle protocol and packet_id together in chain sync (#10315) Define a new `enum` where devp2p subprotocol packet ids (currently eth and par) are defined. Additionally provide functionality to query id value and protocol of a given id object. * snap: prefix version and populate candidate channel (#10343) * snap: populate candidate releases with beta snaps to avoid stale channel * snap: prefix version with v* * addressing review comments * engine: fix copyright header * scripts: restore permissions on sign command * ethcore: enforce tabs * ethcore: enforce tabs * ethcore: enforce tabs * addressing comments * addressing comments * addressing more comments * addressing more comments * addressing more comments * addressing more comments * addressing more comments * json-spec: fix clique epoch to non-zero u64 * ci: enable travis for parity goerli * ci: don't separate build and test step * ci: don't run c++ tests on travis * ci: simplify cargo test to squeeze into travis timeout * ci: don't run tests on travis at all * style(fixes) * fix(add tests) * fix(recent_signer bug) * fix(complete all tests) * fix(nits) * fix(simplify asserts) * fix(cliqueState): simplify code * fix(nits) * docs(comments what's need to fixed) * fix(revert unintended changes) * fix(tests) * fix(logs): voting logs * fix(readability + more logs) * fix(sync) * docs(add missing licens header) * fix(log): info! -> trace! * docs(fix nits) + fix(remove assert) * perf(use counter instead of vec) * fix(remove needless block in match) * fix(faulty comment) * grumbles(docs for tests) * fix(nits) * fix(revert_vote): only remove vote when votes == 0 * fix(vote counter): checked arithmetics * fix(simplify tests) * fix(nits) * fix(clique): err types * fix(clique utils): make use of errors * fix(cleanup nits) * fix(clique sealing): don't read state no signer * fix(replace Vec<Signers> with BTreeSet<Signers>) * fix(tests): BTreeSet and more generic helpers * fix(nits) * fix(ethcore_block_seal): remove needless `Box` * fix(faulty log): info -> trace * fix(checked SystemTime): prevent SystemTime panics * style(chain cfg): space after `:` * style(fn enact): fix whitespace * docs(clique): StepService * docs(nit): fix faulty comment * docs(fix typo) * style(fix bad indentation) * fix(bad regex match) * grumble(on_seal_block): make `&mut` to avoid clone * docs(on_seal_block): fix faulty documentation * Delete .travis.yml * docs: remove eth hf references in spec * Update client.rs * fix(nits) * fix(clique step): `RwLock` -> `AtomicBool` * fix(clique): use `Duration::as_millis` * Clean up some Clique documentation * Add trace information to eth_estimateGas (#10519) * Add trace information to eth_estimateGas * replace unwrap better version * change vm::Error formatter to more user-friendly * remove extra error format * use map_or instead sequence of map/unwrap_or * fix(light/on_demand): extract as a trait * fix(grumble): OnDemand remove needless trait bound
2019-03-27 14:46:20 +01:00
on_demand::{request, OnDemand, OnDemandRequester},
};
use ethereum_types::H256;
use parking_lot::RwLock;
const ALL_VALID_BACKREFS: &str = "no back-references, therefore all back-references valid; qed";
type BoxFuture<T, E> = Box<Future<Item = T, Error = E>>;
/// Allows on-demand fetch of data useful for the light client.
pub struct EpochFetch {
/// A handle to the sync service.
pub sync: Arc<RwLock<Weak<LightSync>>>,
/// The on-demand request service.
pub on_demand: Arc<OnDemand>,
}
impl EpochFetch {
fn request<T>(&self, req: T) -> BoxFuture<T::Out, &'static str>
where
T: Send + request::RequestAdapter + 'static,
T::Out: Send + 'static,
{
Box::new(match self.sync.read().upgrade() {
Some(sync) => {
let on_demand = &self.on_demand;
let maybe_future = sync.with_context(move |ctx| {
on_demand.request(ctx, req).expect(ALL_VALID_BACKREFS)
});
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match maybe_future {
Some(x) => Either::A(x.map_err(|_| "Request canceled")),
None => Either::B(future::err("Unable to access network.")),
}
}
None => Either::B(future::err("Unable to access network")),
})
}
}
impl ChainDataFetcher for EpochFetch {
type Error = &'static str;
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type Body = BoxFuture<encoded::Block, &'static str>;
type Receipts = BoxFuture<Vec<Receipt>, &'static str>;
type Transition = BoxFuture<Vec<u8>, &'static str>;
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fn block_body(&self, header: &Header) -> Self::Body {
self.request(request::Body(header.encoded().into()))
}
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/// Fetch block receipts.
fn block_receipts(&self, header: &Header) -> Self::Receipts {
self.request(request::BlockReceipts(header.encoded().into()))
}
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/// Fetch epoch transition proof at given header.
fn epoch_transition(
&self,
hash: H256,
engine: Arc<EthEngine>,
checker: Arc<StateDependentProof<EthereumMachine>>,
) -> Self::Transition {
self.request(request::Signal {
hash: hash,
engine: engine,
proof_check: checker,
})
}
}