106 lines
3.5 KiB
Rust
106 lines
3.5 KiB
Rust
// Copyright 2015-2018 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
use std::sync::Arc;
|
|
use std::time::Duration;
|
|
|
|
use ethcore::client::DatabaseCompactionProfile;
|
|
use ethcore::spec::{SpecParams, OptimizeFor};
|
|
use light::client::fetch::Unavailable as UnavailableDataFetcher;
|
|
use light::Cache as LightDataCache;
|
|
|
|
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 wal: bool,
|
|
}
|
|
|
|
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, 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,
|
|
cmd.wal).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(::serde_json::to_string_pretty(&hs.to_json()).expect("generated JSON is always valid"))
|
|
} else {
|
|
Err("Error: cannot generate hardcoded sync because the database is empty.".into())
|
|
}
|
|
}
|