openethereum/parity/export_hardcoded_sync.rs
David fbf425c4e2 Extract spec to own crate (#10978)
* Add client-traits crate
Move the BlockInfo trait to new crate

* New crate `machine`
Contains code extracted from ethcore that defines `Machine`, `Externalities` and other execution related code.

* Use new machine and client-traits crates in ethcore

* Use new crates machine and client-traits instead of ethcore where appropriate

* Fix tests

* Don't re-export so many types from ethcore::client

* Fixing more fallout from removing re-export

* fix test

* More fallout from not re-exporting types

* Add some docs

* cleanup

* import the macro edition style

* Tweak docs

* Add missing import

* remove unused ethabi_derive imports

* Use latest ethabi-contract

* Move many traits from ethcore/client/traits to client-traits crate
Initial version of extracted Engine trait

* Move snapshot related traits to the engine crate (eew)

* Move a few snapshot related types to common_types
Cleanup Executed as exported from machine crate

* fix warning

* Gradually introduce new engine crate: snapshot

* ethcore typechecks with new engine crate

* Sort out types outside ethcore

* Add an EpochVerifier to ethash and use that in Engine.epoch_verifier()
Cleanup

* Document pub members

* Sort out tests
Sort out default impls for EpochVerifier

* Add test-helpers feature and move EngineSigner impl to the right place

* Sort out tests

* Sort out tests and refactor verification types

* Fix missing traits

* More missing traits
Fix Histogram

* Fix tests and cleanup

* cleanup

* Put back needed logger import

* Don't rexport common_types from ethcore/src/client
Don't export ethcore::client::*

* Remove files no longer used
Use types from the engine crate
Explicit exports from engine::engine

* Get rid of itertools

* Move a few more traits from ethcore to client-traits: BlockChainReset, ScheduleInfo, StateClient

* Move ProvingBlockChainClient to client-traits

* Don't re-export ForkChoice and Transition from ethcore

* Address grumbles: sort imports, remove commented out code

* Fix merge resolution error

* Extract the Clique engine to own crate

* Extract NullEngine and the block_reward module from ethcore

* Extract InstantSeal engine to own crate

* Extract remaining engines

* Extract executive_state to own crate so it can be used by engine crates

* Remove snapshot stuff from the engine crate

* Put snapshot traits back in ethcore

* cleanup

* Remove stuff from ethcore

* Don't use itertools

* itertools in aura is legit-ish

* More post-merge fixes

* Re-export less types in client

* cleanup

* Extract spec to own crate

* Put back the test-helpers from basic-authority

* Fix ethcore benchmarks

* Reduce the public api of ethcore/verification

* Update ethcore/block-reward/Cargo.toml

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update ethcore/engines/basic-authority/Cargo.toml

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update ethcore/engines/ethash/Cargo.toml

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update ethcore/engines/clique/src/lib.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* signers is already a ref

* Add an EngineType enum to tighten up Engine.name()

* Introduce Snapshotting enum to distinguish the type of snapshots a chain uses

* Rename supports_warp to snapshot_mode

* Missing import

* Update ethcore/src/snapshot/consensus/mod.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* missing import

* Fix import

* double semi
2019-08-23 15:32:58 +02:00

104 lines
3.4 KiB
Rust

// 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;
use std::time::Duration;
use ethcore::client::DatabaseCompactionProfile;
use spec::SpecParams;
use light::client::fetch::Unavailable as UnavailableDataFetcher;
use light::Cache as LightDataCache;
use types::engines::OptimizeFor;
use params::{SpecType, Pruning};
use helpers::execute_upgrades;
use dir::Directories;
use cache::CacheConfig;
use user_defaults::UserDefaults;
use db;
// Number of minutes before a given gas price corpus should expire.
// Light client only.
const GAS_CORPUS_EXPIRATION_MINUTES: u64 = 60 * 6;
#[derive(Debug, PartialEq)]
pub struct ExportHsyncCmd {
pub cache_config: CacheConfig,
pub dirs: Directories,
pub spec: SpecType,
pub pruning: Pruning,
pub compaction: DatabaseCompactionProfile,
}
pub fn execute(cmd: ExportHsyncCmd) -> Result<String, String> {
use light::client as light_client;
use parking_lot::Mutex;
// load spec
let spec = cmd.spec.spec(SpecParams::new(cmd.dirs.cache.as_ref(), OptimizeFor::Memory))?;
// load genesis hash
let genesis_hash = spec.genesis_header().hash();
// database paths
let db_dirs = cmd.dirs.database(genesis_hash, cmd.spec.legacy_fork_name(), spec.data_dir.clone());
// user defaults path
let user_defaults_path = db_dirs.user_defaults_path();
// load user defaults
let user_defaults = UserDefaults::load(&user_defaults_path)?;
// select pruning algorithm
let algorithm = cmd.pruning.to_algorithm(&user_defaults);
// execute upgrades
execute_upgrades(&cmd.dirs.base, &db_dirs, algorithm, &cmd.compaction)?;
// create dirs used by parity
cmd.dirs.create_dirs(false, false)?;
// TODO: configurable cache size.
let cache = LightDataCache::new(Default::default(), Duration::from_secs(60 * GAS_CORPUS_EXPIRATION_MINUTES));
let cache = Arc::new(Mutex::new(cache));
// start client and create transaction queue.
let mut config = light_client::Config {
queue: Default::default(),
chain_column: ::ethcore_db::COL_LIGHT_CHAIN,
verify_full: true,
check_seal: true,
no_hardcoded_sync: true,
};
config.queue.max_mem_use = cmd.cache_config.queue() as usize * 1024 * 1024;
// initialize database.
let db = db::open_db(&db_dirs.client_path(algorithm).to_str().expect("DB path could not be converted to string."),
&cmd.cache_config,
&cmd.compaction).map_err(|e| format!("Failed to open database {:?}", e))?;
let service = light_client::Service::start(config, &spec, UnavailableDataFetcher, db, cache)
.map_err(|e| format!("Error starting light client: {}", e))?;
let hs = service.client().read_hardcoded_sync()
.map_err(|e| format!("Error reading hardcoded sync: {}", e))?;
if let Some(hs) = hs {
Ok(format!("{}", hs))
} else {
Err("Error: cannot generate hardcoded sync because the database is empty.".into())
}
}