752 lines
25 KiB
Rust
752 lines
25 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
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// This file is part of OpenEthereum.
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// OpenEthereum 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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// OpenEthereum 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 OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
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use std::{
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any::Any,
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str::FromStr,
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sync::{atomic, Arc, Weak},
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thread,
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time::{Duration, Instant},
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};
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use crate::{
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account_utils,
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cache::CacheConfig,
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db,
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helpers::{execute_upgrades, passwords_from_files, to_client_config},
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informant::{FullNodeInformantData, Informant},
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metrics::{start_prometheus_metrics, MetricsConfiguration},
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miner::{external::ExternalMiner, work_notify::WorkPoster},
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modules,
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params::{
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fatdb_switch_to_bool, mode_switch_to_bool, tracing_switch_to_bool, AccountsConfig,
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GasPricerConfig, MinerExtras, Pruning, SpecType, Switch,
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},
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rpc, rpc_apis, secretstore, signer,
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sync::{self, SyncConfig},
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user_defaults::UserDefaults,
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};
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use ansi_term::Colour;
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use dir::{DatabaseDirectories, Directories};
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use ethcore::{
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client::{BlockChainClient, BlockInfo, Client, DatabaseCompactionProfile, Mode, VMType},
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miner::{self, stratum, Miner, MinerOptions, MinerService},
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snapshot::{self, SnapshotConfiguration},
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verification::queue::VerifierSettings,
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};
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use ethcore_logger::{Config as LogConfig, RotatingLogger};
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use ethcore_service::ClientService;
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use ethereum_types::{H256, U64};
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use journaldb::Algorithm;
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use jsonrpc_core;
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use node_filter::NodeFilter;
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use parity_rpc::{
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informant, is_major_importing, FutureOutput, FutureResponse, FutureResult, Metadata,
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NetworkSettings, Origin, PubSubSession,
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};
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use parity_runtime::Runtime;
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use parity_version::version;
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// How often we attempt to take a snapshot: only snapshot on blocknumbers that are multiples of this.
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const SNAPSHOT_PERIOD: u64 = 20000;
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// Start snapshoting from `tip`-`history, with this we want to bypass reorgs. Should be smaller than prunning history.
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const SNAPSHOT_HISTORY: u64 = 50;
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// Full client number of DNS threads
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const FETCH_FULL_NUM_DNS_THREADS: usize = 4;
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#[derive(Debug, PartialEq)]
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pub struct RunCmd {
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pub cache_config: CacheConfig,
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pub dirs: Directories,
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pub spec: SpecType,
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pub pruning: Pruning,
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pub pruning_history: u64,
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pub pruning_memory: usize,
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/// Some if execution should be daemonized. Contains pid_file path.
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pub daemon: Option<String>,
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pub logger_config: LogConfig,
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pub miner_options: MinerOptions,
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pub gas_price_percentile: usize,
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pub poll_lifetime: u32,
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pub ws_conf: rpc::WsConfiguration,
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pub http_conf: rpc::HttpConfiguration,
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pub ipc_conf: rpc::IpcConfiguration,
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pub net_conf: sync::NetworkConfiguration,
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pub network_id: Option<u64>,
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pub warp_sync: bool,
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pub warp_barrier: Option<u64>,
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pub acc_conf: AccountsConfig,
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pub gas_pricer_conf: GasPricerConfig,
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pub miner_extras: MinerExtras,
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pub mode: Option<Mode>,
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pub tracing: Switch,
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pub fat_db: Switch,
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pub compaction: DatabaseCompactionProfile,
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pub vm_type: VMType,
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pub experimental_rpcs: bool,
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pub net_settings: NetworkSettings,
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pub secretstore_conf: secretstore::Configuration,
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pub name: String,
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pub custom_bootnodes: bool,
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pub stratum: Option<stratum::Options>,
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pub snapshot_conf: SnapshotConfiguration,
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pub check_seal: bool,
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pub allow_missing_blocks: bool,
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pub download_old_blocks: bool,
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pub verifier_settings: VerifierSettings,
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pub no_persistent_txqueue: bool,
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pub max_round_blocks_to_import: usize,
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pub metrics_conf: MetricsConfiguration,
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}
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// node info fetcher for the local store.
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struct FullNodeInfo {
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miner: Option<Arc<Miner>>, // TODO: only TXQ needed, just use that after decoupling.
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}
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impl crate::local_store::NodeInfo for FullNodeInfo {
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fn pending_transactions(&self) -> Vec<crate::types::transaction::PendingTransaction> {
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let miner = match self.miner.as_ref() {
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Some(m) => m,
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None => return Vec::new(),
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};
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miner
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.local_transactions()
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.values()
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.filter_map(|status| match *status {
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crate::miner::pool::local_transactions::Status::Pending(ref tx) => {
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Some(tx.pending().clone())
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}
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_ => None,
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})
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.collect()
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}
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}
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/// Executes the given run command.
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///
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/// On error, returns what to print on stderr.
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pub fn execute(cmd: RunCmd, logger: Arc<RotatingLogger>) -> Result<RunningClient, String> {
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// load spec
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let spec = cmd.spec.spec(&cmd.dirs.cache)?;
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// load genesis hash
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let genesis_hash = spec.genesis_header().hash();
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// database paths
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let db_dirs = cmd.dirs.database(
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genesis_hash,
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cmd.spec.legacy_fork_name(),
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spec.data_dir.clone(),
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);
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// user defaults path
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let user_defaults_path = db_dirs.user_defaults_path();
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// load user defaults
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let mut user_defaults = UserDefaults::load(&user_defaults_path)?;
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// select pruning algorithm
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let algorithm = cmd.pruning.to_algorithm(&user_defaults);
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// check if tracing is on
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let tracing = tracing_switch_to_bool(cmd.tracing, &user_defaults)?;
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// check if fatdb is on
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let fat_db = fatdb_switch_to_bool(cmd.fat_db, &user_defaults, algorithm)?;
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// get the mode
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let mode = mode_switch_to_bool(cmd.mode, &user_defaults)?;
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trace!(target: "mode", "mode is {:?}", mode);
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let network_enabled = match mode {
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Mode::Dark(_) | Mode::Off => false,
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_ => true,
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};
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// prepare client and snapshot paths.
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let client_path = db_dirs.client_path(algorithm);
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let snapshot_path = db_dirs.snapshot_path();
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// execute upgrades
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execute_upgrades(&cmd.dirs.base, &db_dirs, algorithm, &cmd.compaction)?;
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// create dirs used by parity
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cmd.dirs.create_dirs(
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cmd.acc_conf.unlocked_accounts.len() == 0,
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cmd.secretstore_conf.enabled,
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)?;
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//print out running parity environment
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print_running_environment(&spec.data_dir, &cmd.dirs, &db_dirs);
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// display info about used pruning algorithm
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info!(
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"State DB configuration: {}{}{}",
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Colour::White.bold().paint(algorithm.as_str()),
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match fat_db {
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true => Colour::White.bold().paint(" +Fat").to_string(),
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false => "".to_owned(),
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},
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match tracing {
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true => Colour::White.bold().paint(" +Trace").to_string(),
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false => "".to_owned(),
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}
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);
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info!(
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"Operating mode: {}",
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Colour::White.bold().paint(format!("{}", mode))
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);
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// display warning about using experimental journaldb algorithm
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if !algorithm.is_stable() {
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warn!(
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"Your chosen strategy is {}! You can re-run with --pruning to change.",
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Colour::Red.bold().paint("unstable")
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);
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}
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// create sync config
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let mut sync_config = SyncConfig::default();
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sync_config.network_id = match cmd.network_id {
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Some(id) => id,
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None => spec.network_id(),
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};
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if spec.subprotocol_name().len() > 8 {
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warn!("Your chain specification's subprotocol length is more then 8. Ignoring.");
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} else {
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sync_config.subprotocol_name = U64::from(spec.subprotocol_name().as_bytes())
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}
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sync_config.fork_block = spec.fork_block();
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let mut warp_sync = spec.engine.supports_warp() && cmd.warp_sync;
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if warp_sync {
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// Logging is not initialized yet, so we print directly to stderr
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if fat_db {
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warn!("Warning: Warp Sync is disabled because Fat DB is turned on.");
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warp_sync = false;
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} else if tracing {
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warn!("Warning: Warp Sync is disabled because tracing is turned on.");
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warp_sync = false;
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} else if algorithm != Algorithm::OverlayRecent {
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warn!("Warning: Warp Sync is disabled because of non-default pruning mode.");
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warp_sync = false;
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}
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}
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sync_config.warp_sync = match (warp_sync, cmd.warp_barrier) {
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(true, Some(block)) => sync::WarpSync::OnlyAndAfter(block),
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(true, _) => sync::WarpSync::Enabled,
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_ => sync::WarpSync::Disabled,
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};
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sync_config.download_old_blocks = cmd.download_old_blocks;
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sync_config.eip1559_transition = spec.params().eip1559_transition;
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let passwords = passwords_from_files(&cmd.acc_conf.password_files)?;
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// prepare account provider
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let account_provider = Arc::new(account_utils::prepare_account_provider(
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&cmd.spec,
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&cmd.dirs,
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&spec.data_dir,
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cmd.acc_conf,
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&passwords,
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)?);
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// spin up event loop
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let runtime = Runtime::with_default_thread_count();
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// fetch service
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let fetch = fetch::Client::new(FETCH_FULL_NUM_DNS_THREADS)
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.map_err(|e| format!("Error starting fetch client: {:?}", e))?;
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let txpool_size = cmd.miner_options.pool_limits.max_count;
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// create miner
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let miner = Arc::new(Miner::new(
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cmd.miner_options,
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cmd.gas_pricer_conf
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.to_gas_pricer(fetch.clone(), runtime.executor()),
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&spec,
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(
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cmd.miner_extras.local_accounts,
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account_utils::miner_local_accounts(account_provider.clone()),
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),
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));
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miner.set_author(miner::Author::External(cmd.miner_extras.author));
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miner.set_gas_range_target(cmd.miner_extras.gas_range_target);
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miner.set_extra_data(cmd.miner_extras.extra_data);
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if !cmd.miner_extras.work_notify.is_empty() {
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miner.add_work_listener(Box::new(WorkPoster::new(
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&cmd.miner_extras.work_notify,
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fetch.clone(),
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runtime.executor(),
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)));
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}
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let engine_signer = cmd.miner_extras.engine_signer;
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if engine_signer != Default::default() {
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if let Some(author) = account_utils::miner_author(
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&cmd.spec,
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&cmd.dirs,
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&account_provider,
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engine_signer,
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&passwords,
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)? {
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miner.set_author(author);
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}
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}
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// create client config
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let mut client_config = to_client_config(
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&cmd.cache_config,
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spec.name.to_lowercase(),
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mode.clone(),
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tracing,
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fat_db,
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cmd.compaction,
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cmd.vm_type,
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cmd.name,
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algorithm,
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cmd.pruning_history,
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cmd.pruning_memory,
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cmd.check_seal,
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cmd.max_round_blocks_to_import,
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);
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client_config.queue.verifier_settings = cmd.verifier_settings;
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client_config.queue.verifier_settings.bad_hashes = verification_bad_blocks(&cmd.spec);
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client_config.transaction_verification_queue_size = ::std::cmp::max(2048, txpool_size / 4);
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client_config.snapshot = cmd.snapshot_conf.clone();
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// set up bootnodes
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let mut net_conf = cmd.net_conf;
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if !cmd.custom_bootnodes {
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net_conf.boot_nodes = spec.nodes.clone();
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}
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// set network path.
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net_conf.net_config_path = Some(db_dirs.network_path().to_string_lossy().into_owned());
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let restoration_db_handler = db::restoration_db_handler(&client_path, &client_config);
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let client_db = restoration_db_handler
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.open(&client_path)
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.map_err(|e| format!("Failed to open database {:?}", e))?;
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// create client service.
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let service = ClientService::start(
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client_config,
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&spec,
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client_db,
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&snapshot_path,
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restoration_db_handler,
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&cmd.dirs.ipc_path(),
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miner.clone(),
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)
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.map_err(|e| format!("Client service error: {:?}", e))?;
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let connection_filter_address = spec.params().node_permission_contract;
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// drop the spec to free up genesis state.
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let forks = spec.hard_forks.clone();
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drop(spec);
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// take handle to client
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let client = service.client();
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// Update miners block gas limit and base_fee
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let base_fee = client
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.engine()
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.calculate_base_fee(&client.best_block_header());
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let allow_non_eoa_sender = client
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.engine()
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.allow_non_eoa_sender(client.best_block_header().number() + 1);
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miner.update_transaction_queue_limits(
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*client.best_block_header().gas_limit(),
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base_fee,
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allow_non_eoa_sender,
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);
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let connection_filter = connection_filter_address.map(|a| {
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Arc::new(NodeFilter::new(
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Arc::downgrade(&client) as Weak<dyn BlockChainClient>,
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a,
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))
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});
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let snapshot_service = service.snapshot_service();
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// initialize the local node information store.
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let store = {
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let db = service.db();
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let node_info = FullNodeInfo {
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miner: match cmd.no_persistent_txqueue {
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true => None,
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false => Some(miner.clone()),
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},
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};
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let store = crate::local_store::create(
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db.key_value().clone(),
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::ethcore_db::COL_NODE_INFO,
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node_info,
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);
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if cmd.no_persistent_txqueue {
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info!("Running without a persistent transaction queue.");
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if let Err(e) = store.clear() {
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warn!("Error clearing persistent transaction queue: {}", e);
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}
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}
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// re-queue pending transactions.
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match store.pending_transactions() {
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Ok(pending) => {
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for pending_tx in pending {
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if let Err(e) = miner.import_own_transaction(&*client, pending_tx) {
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warn!("Error importing saved transaction: {}", e)
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}
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}
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}
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Err(e) => warn!("Error loading cached pending transactions from disk: {}", e),
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}
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Arc::new(store)
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};
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// register it as an IO service to update periodically.
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service
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.register_io_handler(store)
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.map_err(|_| "Unable to register local store handler".to_owned())?;
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// create external miner
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let external_miner = Arc::new(ExternalMiner::default());
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// start stratum
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if let Some(ref stratum_config) = cmd.stratum {
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stratum::Stratum::register(stratum_config, miner.clone(), Arc::downgrade(&client))
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.map_err(|e| format!("Stratum start error: {:?}", e))?;
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}
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// create sync object
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let (sync_provider, manage_network, chain_notify, priority_tasks) = modules::sync(
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sync_config,
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net_conf.clone().into(),
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client.clone(),
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forks,
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snapshot_service.clone(),
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&cmd.logger_config,
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connection_filter
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.clone()
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.map(|f| f as Arc<dyn crate::sync::ConnectionFilter + 'static>),
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)
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.map_err(|e| format!("Sync error: {}", e))?;
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service.add_notify(chain_notify.clone());
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// Propagate transactions as soon as they are imported.
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let tx = ::parking_lot::Mutex::new(priority_tasks);
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let is_ready = Arc::new(atomic::AtomicBool::new(true));
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miner.add_transactions_listener(Box::new(move |_hashes| {
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// we want to have only one PendingTransactions task in the queue.
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if is_ready
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.compare_exchange(
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true,
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false,
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atomic::Ordering::SeqCst,
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atomic::Ordering::SeqCst,
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)
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.is_ok()
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{
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let task =
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crate::sync::PriorityTask::PropagateTransactions(Instant::now(), is_ready.clone());
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// we ignore error cause it means that we are closing
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let _ = tx.lock().send(task);
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}
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}));
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// start network
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if network_enabled {
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chain_notify.start();
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}
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// set up dependencies for rpc servers
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let rpc_stats = Arc::new(informant::RpcStats::default());
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let secret_store = account_provider.clone();
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let signer_service = Arc::new(signer::new_service(&cmd.ws_conf, &cmd.logger_config));
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let deps_for_rpc_apis = Arc::new(rpc_apis::FullDependencies {
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signer_service: signer_service,
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snapshot: snapshot_service.clone(),
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client: client.clone(),
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sync: sync_provider.clone(),
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net: manage_network.clone(),
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accounts: secret_store,
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miner: miner.clone(),
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external_miner: external_miner.clone(),
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logger: logger.clone(),
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settings: Arc::new(cmd.net_settings.clone()),
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net_service: manage_network.clone(),
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experimental_rpcs: cmd.experimental_rpcs,
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ws_address: cmd.ws_conf.address(),
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fetch: fetch.clone(),
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executor: runtime.executor(),
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|
gas_price_percentile: cmd.gas_price_percentile,
|
|
poll_lifetime: cmd.poll_lifetime,
|
|
allow_missing_blocks: cmd.allow_missing_blocks,
|
|
no_ancient_blocks: !cmd.download_old_blocks,
|
|
});
|
|
|
|
let dependencies = rpc::Dependencies {
|
|
apis: deps_for_rpc_apis.clone(),
|
|
executor: runtime.executor(),
|
|
stats: rpc_stats.clone(),
|
|
};
|
|
|
|
// start rpc servers
|
|
let rpc_direct = rpc::setup_apis(rpc_apis::ApiSet::All, &dependencies);
|
|
let ws_server = rpc::new_ws(cmd.ws_conf.clone(), &dependencies)?;
|
|
let ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
|
|
|
|
// start the prometheus metrics server
|
|
start_prometheus_metrics(&cmd.metrics_conf, &dependencies)?;
|
|
|
|
let http_server = rpc::new_http(
|
|
"HTTP JSON-RPC",
|
|
"jsonrpc",
|
|
cmd.http_conf.clone(),
|
|
&dependencies,
|
|
)?;
|
|
|
|
// secret store key server
|
|
let secretstore_deps = secretstore::Dependencies {
|
|
client: client.clone(),
|
|
sync: sync_provider.clone(),
|
|
miner: miner.clone(),
|
|
account_provider,
|
|
accounts_passwords: &passwords,
|
|
};
|
|
let secretstore_key_server = secretstore::start(
|
|
cmd.secretstore_conf.clone(),
|
|
secretstore_deps,
|
|
runtime.executor(),
|
|
)?;
|
|
|
|
// the informant
|
|
let informant = Arc::new(Informant::new(
|
|
FullNodeInformantData {
|
|
client: service.client(),
|
|
sync: Some(sync_provider.clone()),
|
|
net: Some(manage_network.clone()),
|
|
},
|
|
Some(snapshot_service.clone()),
|
|
Some(rpc_stats.clone()),
|
|
cmd.logger_config.color,
|
|
));
|
|
service.add_notify(informant.clone());
|
|
service
|
|
.register_io_handler(informant.clone())
|
|
.map_err(|_| "Unable to register informant handler".to_owned())?;
|
|
|
|
// save user defaults
|
|
user_defaults.is_first_launch = false;
|
|
user_defaults.pruning = algorithm;
|
|
user_defaults.tracing = tracing;
|
|
user_defaults.fat_db = fat_db;
|
|
user_defaults.set_mode(mode);
|
|
user_defaults.save(&user_defaults_path)?;
|
|
|
|
// tell client how to save the default mode if it gets changed.
|
|
client.on_user_defaults_change(move |mode: Option<Mode>| {
|
|
if let Some(mode) = mode {
|
|
user_defaults.set_mode(mode);
|
|
}
|
|
let _ = user_defaults.save(&user_defaults_path); // discard failures - there's nothing we can do
|
|
});
|
|
|
|
// the watcher must be kept alive.
|
|
let watcher = match cmd.snapshot_conf.enable {
|
|
false => None,
|
|
true => {
|
|
let sync = sync_provider.clone();
|
|
let client = client.clone();
|
|
let watcher = Arc::new(snapshot::Watcher::new(
|
|
service.client(),
|
|
move || is_major_importing(Some(sync.status().state), client.queue_info()),
|
|
service.io().channel(),
|
|
SNAPSHOT_PERIOD,
|
|
SNAPSHOT_HISTORY,
|
|
));
|
|
|
|
service.add_notify(watcher.clone());
|
|
Some(watcher)
|
|
}
|
|
};
|
|
|
|
Ok(RunningClient {
|
|
inner: RunningClientInner::Full {
|
|
rpc: rpc_direct,
|
|
informant,
|
|
client,
|
|
client_service: Arc::new(service),
|
|
keep_alive: Box::new((
|
|
watcher,
|
|
ws_server,
|
|
http_server,
|
|
ipc_server,
|
|
secretstore_key_server,
|
|
runtime,
|
|
)),
|
|
},
|
|
})
|
|
}
|
|
|
|
/// Set bad blocks in VerificationQeueu. By omiting header we can omit particular fork of chain.
|
|
fn verification_bad_blocks(spec: &SpecType) -> Vec<H256> {
|
|
match *spec {
|
|
SpecType::Ropsten => {
|
|
vec![
|
|
H256::from_str("1eac3d16c642411f13c287e29144c6f58fda859407c8f24c38deb168e1040714")
|
|
.expect("Valid hex string"),
|
|
]
|
|
}
|
|
_ => vec![],
|
|
}
|
|
}
|
|
|
|
/// Parity client currently executing in background threads.
|
|
///
|
|
/// Should be destroyed by calling `shutdown()`, otherwise execution will continue in the
|
|
/// background.
|
|
pub struct RunningClient {
|
|
inner: RunningClientInner,
|
|
}
|
|
|
|
enum RunningClientInner {
|
|
Full {
|
|
rpc:
|
|
jsonrpc_core::MetaIoHandler<Metadata, informant::Middleware<informant::ClientNotifier>>,
|
|
informant: Arc<Informant<FullNodeInformantData>>,
|
|
client: Arc<Client>,
|
|
client_service: Arc<ClientService>,
|
|
keep_alive: Box<dyn Any>,
|
|
},
|
|
}
|
|
|
|
impl RunningClient {
|
|
/// Performs an asynchronous RPC query.
|
|
// FIXME: [tomaka] This API should be better, with for example a Future
|
|
pub fn rpc_query(
|
|
&self,
|
|
request: &str,
|
|
session: Option<Arc<PubSubSession>>,
|
|
) -> FutureResult<FutureResponse, FutureOutput> {
|
|
let metadata = Metadata {
|
|
origin: Origin::CApi,
|
|
session,
|
|
};
|
|
|
|
match self.inner {
|
|
RunningClientInner::Full { ref rpc, .. } => rpc.handle_request(request, metadata),
|
|
}
|
|
}
|
|
|
|
/// Shuts down the client.
|
|
pub fn shutdown(self) {
|
|
match self.inner {
|
|
RunningClientInner::Full {
|
|
rpc,
|
|
informant,
|
|
client,
|
|
client_service,
|
|
keep_alive,
|
|
} => {
|
|
info!("Finishing work, please wait...");
|
|
// Create a weak reference to the client so that we can wait on shutdown
|
|
// until it is dropped
|
|
let weak_client = Arc::downgrade(&client);
|
|
// Shutdown and drop the ClientService
|
|
client_service.shutdown();
|
|
trace!(target: "shutdown", "ClientService shut down");
|
|
drop(client_service);
|
|
trace!(target: "shutdown", "ClientService dropped");
|
|
// drop this stuff as soon as exit detected.
|
|
drop(rpc);
|
|
trace!(target: "shutdown", "RPC dropped");
|
|
drop(keep_alive);
|
|
trace!(target: "shutdown", "KeepAlive dropped");
|
|
// to make sure timer does not spawn requests while shutdown is in progress
|
|
informant.shutdown();
|
|
trace!(target: "shutdown", "Informant shut down");
|
|
// just Arc is dropping here, to allow other reference release in its default time
|
|
drop(informant);
|
|
trace!(target: "shutdown", "Informant dropped");
|
|
drop(client);
|
|
trace!(target: "shutdown", "Client dropped");
|
|
// This may help when debugging ref cycles. Requires nightly-only `#![feature(weak_counts)]`
|
|
// trace!(target: "shutdown", "Waiting for refs to Client to shutdown, strong_count={:?}, weak_count={:?}", weak_client.strong_count(), weak_client.weak_count());
|
|
trace!(target: "shutdown", "Waiting for refs to Client to shutdown");
|
|
wait_for_drop(weak_client);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn print_running_environment(data_dir: &str, dirs: &Directories, db_dirs: &DatabaseDirectories) {
|
|
info!("Starting {}", Colour::White.bold().paint(version()));
|
|
info!(
|
|
"Keys path {}",
|
|
Colour::White
|
|
.bold()
|
|
.paint(dirs.keys_path(data_dir).to_string_lossy().into_owned())
|
|
);
|
|
info!(
|
|
"DB path {}",
|
|
Colour::White
|
|
.bold()
|
|
.paint(db_dirs.db_root_path().to_string_lossy().into_owned())
|
|
);
|
|
}
|
|
|
|
fn wait_for_drop<T>(w: Weak<T>) {
|
|
const SLEEP_DURATION: Duration = Duration::from_secs(1);
|
|
const WARN_TIMEOUT: Duration = Duration::from_secs(60);
|
|
const MAX_TIMEOUT: Duration = Duration::from_secs(300);
|
|
|
|
let instant = Instant::now();
|
|
let mut warned = false;
|
|
|
|
while instant.elapsed() < MAX_TIMEOUT {
|
|
if w.upgrade().is_none() {
|
|
return;
|
|
}
|
|
|
|
if !warned && instant.elapsed() > WARN_TIMEOUT {
|
|
warned = true;
|
|
warn!("Shutdown is taking longer than expected.");
|
|
}
|
|
|
|
thread::sleep(SLEEP_DURATION);
|
|
|
|
// When debugging shutdown issues on a nightly build it can help to enable this with the
|
|
// `#![feature(weak_counts)]` added to lib.rs (TODO: enable when
|
|
// https://github.com/rust-lang/rust/issues/57977 is stable)
|
|
// trace!(target: "shutdown", "Waiting for client to drop, strong_count={:?}, weak_count={:?}", w.strong_count(), w.weak_count());
|
|
trace!(target: "shutdown", "Waiting for client to drop");
|
|
}
|
|
|
|
warn!("Shutdown timeout reached, exiting uncleanly.");
|
|
}
|