openethereum/parity/run.rs
2017-05-09 23:46:46 +08:00

849 lines
27 KiB
Rust

// Copyright 2015-2017 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::net::{TcpListener};
use ctrlc::CtrlC;
use fdlimit::raise_fd_limit;
use parity_rpc::{NetworkSettings, informant, is_major_importing};
use ethsync::NetworkConfiguration;
use util::{Colour, version, Mutex, Condvar};
use io::{MayPanic, ForwardPanic, PanicHandler};
use ethcore_logger::{Config as LogConfig, RotatingLogger};
use ethcore::miner::{StratumOptions, Stratum};
use ethcore::client::{Client, Mode, DatabaseCompactionProfile, VMType, BlockChainClient};
use ethcore::service::ClientService;
use ethcore::account_provider::{AccountProvider, AccountProviderSettings};
use ethcore::miner::{Miner, MinerService, ExternalMiner, MinerOptions};
use ethcore::snapshot;
use ethcore::verification::queue::VerifierSettings;
use light::Cache as LightDataCache;
use ethsync::SyncConfig;
use informant::Informant;
use updater::{UpdatePolicy, Updater};
use parity_reactor::EventLoop;
use hash_fetch::fetch::{Fetch, Client as FetchClient};
use params::{
SpecType, Pruning, AccountsConfig, GasPricerConfig, MinerExtras, Switch,
tracing_switch_to_bool, fatdb_switch_to_bool, mode_switch_to_bool
};
use helpers::{to_client_config, execute_upgrades, passwords_from_files};
use upgrade::upgrade_key_location;
use dir::Directories;
use cache::CacheConfig;
use user_defaults::UserDefaults;
use dapps;
use ipfs;
use signer;
use secretstore;
use modules;
use rpc_apis;
use rpc;
use url;
// how often to take periodic snapshots.
const SNAPSHOT_PERIOD: u64 = 10000;
// how many blocks to wait before starting a periodic snapshot.
const SNAPSHOT_HISTORY: u64 = 100;
// Number of minutes before a given gas price corpus should expire.
// Light client only.
const GAS_CORPUS_EXPIRATION_MINUTES: i64 = 60 * 6;
// Pops along with error messages when a password is missing or invalid.
const VERIFY_PASSWORD_HINT: &'static str = "Make sure valid password is present in files passed using `--password` or in the configuration file.";
#[derive(Debug, PartialEq)]
pub struct RunCmd {
pub cache_config: CacheConfig,
pub dirs: Directories,
pub spec: SpecType,
pub pruning: Pruning,
pub pruning_history: u64,
pub pruning_memory: usize,
/// Some if execution should be daemonized. Contains pid_file path.
pub daemon: Option<String>,
pub logger_config: LogConfig,
pub miner_options: MinerOptions,
pub ws_conf: rpc::WsConfiguration,
pub http_conf: rpc::HttpConfiguration,
pub ipc_conf: rpc::IpcConfiguration,
pub net_conf: NetworkConfiguration,
pub network_id: Option<u64>,
pub warp_sync: bool,
pub public_node: bool,
pub acc_conf: AccountsConfig,
pub gas_pricer: GasPricerConfig,
pub miner_extras: MinerExtras,
pub update_policy: UpdatePolicy,
pub mode: Option<Mode>,
pub tracing: Switch,
pub fat_db: Switch,
pub compaction: DatabaseCompactionProfile,
pub wal: bool,
pub vm_type: VMType,
pub geth_compatibility: bool,
pub ui_address: Option<(String, u16)>,
pub net_settings: NetworkSettings,
pub dapps_conf: dapps::Configuration,
pub ipfs_conf: ipfs::Configuration,
pub signer_conf: signer::Configuration,
pub secretstore_conf: secretstore::Configuration,
pub dapp: Option<String>,
pub ui: bool,
pub name: String,
pub custom_bootnodes: bool,
pub stratum: Option<StratumOptions>,
pub no_periodic_snapshot: bool,
pub check_seal: bool,
pub download_old_blocks: bool,
pub verifier_settings: VerifierSettings,
pub serve_light: bool,
pub light: bool,
pub no_persistent_txqueue: bool,
}
pub fn open_ui(signer_conf: &signer::Configuration) -> Result<(), String> {
if !signer_conf.enabled {
return Err("Cannot use UI command with UI turned off.".into())
}
let token = signer::generate_token_and_url(signer_conf)?;
// Open a browser
url::open(&token.url);
// Print a message
println!("{}", token.message);
Ok(())
}
pub fn open_dapp(dapps_conf: &dapps::Configuration, rpc_conf: &rpc::HttpConfiguration, dapp: &str) -> Result<(), String> {
if !dapps_conf.enabled {
return Err("Cannot use DAPP command with Dapps turned off.".into())
}
let url = format!("http://{}:{}/{}/", rpc_conf.interface, rpc_conf.port, dapp);
url::open(&url);
Ok(())
}
// node info fetcher for the local store.
struct FullNodeInfo {
miner: Option<Arc<Miner>>, // TODO: only TXQ needed, just use that after decoupling.
}
impl ::local_store::NodeInfo for FullNodeInfo {
fn pending_transactions(&self) -> Vec<::ethcore::transaction::PendingTransaction> {
let miner = match self.miner.as_ref() {
Some(m) => m,
None => return Vec::new(),
};
let local_txs = miner.local_transactions();
miner.pending_transactions()
.into_iter()
.chain(miner.future_transactions())
.filter(|tx| local_txs.contains_key(&tx.hash()))
.collect()
}
}
// helper for light execution.
fn execute_light(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> Result<(bool, Option<String>), String> {
use light::client as light_client;
use ethsync::{LightSyncParams, LightSync, ManageNetwork};
use util::RwLock;
let panic_handler = PanicHandler::new_in_arc();
// load spec
let spec = cmd.spec.spec()?;
// 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);
let compaction = cmd.compaction.compaction_profile(db_dirs.db_root_path().as_path());
// execute upgrades
execute_upgrades(&cmd.dirs.base, &db_dirs, algorithm, compaction.clone())?;
// create dirs used by parity
cmd.dirs.create_dirs(cmd.dapps_conf.enabled, cmd.signer_conf.enabled, cmd.secretstore_conf.enabled)?;
info!("Starting {}", Colour::White.bold().paint(version()));
info!("Running in experimental {} mode.", Colour::Blue.bold().paint("Light Client"));
// TODO: configurable cache size.
let cache = LightDataCache::new(Default::default(), ::time::Duration::minutes(GAS_CORPUS_EXPIRATION_MINUTES));
let cache = Arc::new(::util::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,
db_cache_size: Some(cmd.cache_config.blockchain() as usize * 1024 * 1024),
db_compaction: compaction,
db_wal: cmd.wal,
};
config.queue.max_mem_use = cmd.cache_config.queue() as usize * 1024 * 1024;
config.queue.verifier_settings = cmd.verifier_settings;
let service = light_client::Service::start(config, &spec, &db_dirs.client_path(algorithm), cache.clone())
.map_err(|e| format!("Error starting light client: {}", e))?;
let txq = Arc::new(RwLock::new(::light::transaction_queue::TransactionQueue::default()));
let provider = ::light::provider::LightProvider::new(service.client().clone(), txq.clone());
// start network.
// set up bootnodes
let mut net_conf = cmd.net_conf;
if !cmd.custom_bootnodes {
net_conf.boot_nodes = spec.nodes.clone();
}
// start on_demand service.
let account_start_nonce = service.client().engine().account_start_nonce();
let on_demand = Arc::new(::light::on_demand::OnDemand::new(cache.clone(), account_start_nonce));
// set network path.
net_conf.net_config_path = Some(db_dirs.network_path().to_string_lossy().into_owned());
let sync_params = LightSyncParams {
network_config: net_conf.into_basic().map_err(|e| format!("Failed to produce network config: {}", e))?,
client: Arc::new(provider),
network_id: cmd.network_id.unwrap_or(spec.network_id()),
subprotocol_name: ::ethsync::LIGHT_PROTOCOL,
handlers: vec![on_demand.clone()],
};
let light_sync = LightSync::new(sync_params).map_err(|e| format!("Error starting network: {}", e))?;
let light_sync = Arc::new(light_sync);
// spin up event loop
let event_loop = EventLoop::spawn();
// queue cull service.
let queue_cull = Arc::new(::light_helpers::QueueCull {
client: service.client().clone(),
sync: light_sync.clone(),
on_demand: on_demand.clone(),
txq: txq.clone(),
remote: event_loop.remote(),
});
service.register_handler(queue_cull).map_err(|e| format!("Error attaching service: {:?}", e))?;
// start the network.
light_sync.start_network();
// fetch service
let fetch = FetchClient::new().map_err(|e| format!("Error starting fetch client: {:?}", e))?;
let passwords = passwords_from_files(&cmd.acc_conf.password_files)?;
// prepare account provider
let account_provider = Arc::new(prepare_account_provider(&cmd.spec, &cmd.dirs, &spec.data_dir, cmd.acc_conf, &passwords)?);
let rpc_stats = Arc::new(informant::RpcStats::default());
let signer_path = cmd.signer_conf.signer_path.clone();
// start RPCs
let deps_for_rpc_apis = Arc::new(rpc_apis::LightDependencies {
signer_service: Arc::new(rpc_apis::SignerService::new(move || {
signer::generate_new_token(signer_path.clone()).map_err(|e| format!("{:?}", e))
}, cmd.ui_address)),
client: service.client().clone(),
sync: light_sync.clone(),
net: light_sync.clone(),
secret_store: account_provider,
logger: logger,
settings: Arc::new(cmd.net_settings),
on_demand: on_demand,
cache: cache,
transaction_queue: txq,
dapps_interface: match cmd.dapps_conf.enabled {
true => Some(cmd.http_conf.interface.clone()),
false => None,
},
dapps_port: match cmd.dapps_conf.enabled {
true => Some(cmd.http_conf.port),
false => None,
},
fetch: fetch,
geth_compatibility: cmd.geth_compatibility,
});
let dependencies = rpc::Dependencies {
apis: deps_for_rpc_apis.clone(),
remote: event_loop.raw_remote(),
stats: rpc_stats.clone(),
};
// start rpc servers
let _ws_server = rpc::new_ws(cmd.ws_conf, &dependencies)?;
let _http_server = rpc::new_http(cmd.http_conf.clone(), &dependencies, None)?;
let _ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
// the signer server
let signer_deps = signer::Dependencies {
apis: deps_for_rpc_apis.clone(),
remote: event_loop.raw_remote(),
rpc_stats: rpc_stats.clone(),
};
let signing_queue = deps_for_rpc_apis.signer_service.queue();
let _signer_server = signer::start(cmd.signer_conf.clone(), signing_queue, signer_deps)?;
// TODO: Dapps
// minimal informant thread. Just prints block number every 5 seconds.
// TODO: integrate with informant.rs
let informant_client = service.client().clone();
::std::thread::spawn(move || loop {
info!("#{}", informant_client.best_block_header().number());
::std::thread::sleep(::std::time::Duration::from_secs(5));
});
// wait for ctrl-c.
Ok(wait_for_exit(panic_handler, None, None, can_restart))
}
pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> Result<(bool, Option<String>), String> {
if cmd.ui && cmd.dapps_conf.enabled {
// Check if Parity is already running
let addr = format!("{}:{}", cmd.signer_conf.interface, cmd.signer_conf.port);
if !TcpListener::bind(&addr as &str).is_ok() {
return open_ui(&cmd.signer_conf).map(|_| (false, None));
}
}
// increase max number of open files
raise_fd_limit();
// run as light client.
if cmd.light {
return execute_light(cmd, can_restart, logger);
}
// set up panic handler
let panic_handler = PanicHandler::new_in_arc();
// load spec
let spec = cmd.spec.spec()?;
// 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 mut user_defaults = UserDefaults::load(&user_defaults_path)?;
// select pruning algorithm
let algorithm = cmd.pruning.to_algorithm(&user_defaults);
// check if tracing is on
let tracing = tracing_switch_to_bool(cmd.tracing, &user_defaults)?;
// check if fatdb is on
let fat_db = fatdb_switch_to_bool(cmd.fat_db, &user_defaults, algorithm)?;
// get the mode
let mode = mode_switch_to_bool(cmd.mode, &user_defaults)?;
trace!(target: "mode", "mode is {:?}", mode);
let network_enabled = match mode { Mode::Dark(_) | Mode::Off => false, _ => true, };
// get the update policy
let update_policy = cmd.update_policy;
// prepare client and snapshot paths.
let client_path = db_dirs.client_path(algorithm);
let snapshot_path = db_dirs.snapshot_path();
// execute upgrades
execute_upgrades(&cmd.dirs.base, &db_dirs, algorithm, cmd.compaction.compaction_profile(db_dirs.db_root_path().as_path()))?;
// create dirs used by parity
cmd.dirs.create_dirs(cmd.dapps_conf.enabled, cmd.signer_conf.enabled, cmd.secretstore_conf.enabled)?;
// run in daemon mode
if let Some(pid_file) = cmd.daemon {
daemonize(pid_file)?;
}
// display info about used pruning algorithm
info!("Starting {}", Colour::White.bold().paint(version()));
info!("State DB configuration: {}{}{}",
Colour::White.bold().paint(algorithm.as_str()),
match fat_db {
true => Colour::White.bold().paint(" +Fat").to_string(),
false => "".to_owned(),
},
match tracing {
true => Colour::White.bold().paint(" +Trace").to_string(),
false => "".to_owned(),
}
);
info!("Operating mode: {}", Colour::White.bold().paint(format!("{}", mode)));
// display warning about using experimental journaldb algorithm
if !algorithm.is_stable() {
warn!("Your chosen strategy is {}! You can re-run with --pruning to change.", Colour::Red.bold().paint("unstable"));
}
// create sync config
let mut sync_config = SyncConfig::default();
sync_config.network_id = match cmd.network_id {
Some(id) => id,
None => spec.network_id(),
};
if spec.subprotocol_name().len() != 3 {
warn!("Your chain specification's subprotocol length is not 3. Ignoring.");
} else {
sync_config.subprotocol_name.clone_from_slice(spec.subprotocol_name().as_bytes());
}
sync_config.fork_block = spec.fork_block();
sync_config.warp_sync = cmd.warp_sync;
sync_config.download_old_blocks = cmd.download_old_blocks;
sync_config.serve_light = cmd.serve_light;
let passwords = passwords_from_files(&cmd.acc_conf.password_files)?;
// prepare account provider
let account_provider = Arc::new(prepare_account_provider(&cmd.spec, &cmd.dirs, &spec.data_dir, cmd.acc_conf, &passwords)?);
// create miner
let initial_min_gas_price = cmd.gas_pricer.initial_min();
let miner = Miner::new(cmd.miner_options, cmd.gas_pricer.into(), &spec, Some(account_provider.clone()));
miner.set_author(cmd.miner_extras.author);
miner.set_gas_floor_target(cmd.miner_extras.gas_floor_target);
miner.set_gas_ceil_target(cmd.miner_extras.gas_ceil_target);
miner.set_extra_data(cmd.miner_extras.extra_data);
miner.set_transactions_limit(cmd.miner_extras.transactions_limit);
miner.set_minimal_gas_price(initial_min_gas_price);
miner.recalibrate_minimal_gas_price();
let engine_signer = cmd.miner_extras.engine_signer;
if engine_signer != Default::default() {
// Check if engine signer exists
if !account_provider.has_account(engine_signer).unwrap_or(false) {
return Err(format!("Consensus signer account not found for the current chain. {}", build_create_account_hint(&cmd.spec, &cmd.dirs.keys)));
}
// Check if any passwords have been read from the password file(s)
if passwords.is_empty() {
return Err(format!("No password found for the consensus signer {}. {}", engine_signer, VERIFY_PASSWORD_HINT));
}
// Attempt to sign in the engine signer.
if !passwords.into_iter().any(|p| miner.set_engine_signer(engine_signer, p).is_ok()) {
return Err(format!("No valid password for the consensus signer {}. {}", engine_signer, VERIFY_PASSWORD_HINT));
}
}
// create client config
let mut client_config = to_client_config(
&cmd.cache_config,
spec.name.to_lowercase(),
mode.clone(),
tracing,
fat_db,
cmd.compaction,
cmd.wal,
cmd.vm_type,
cmd.name,
algorithm,
cmd.pruning_history,
cmd.pruning_memory,
cmd.check_seal,
);
client_config.queue.verifier_settings = cmd.verifier_settings;
// set up bootnodes
let mut net_conf = cmd.net_conf;
if !cmd.custom_bootnodes {
net_conf.boot_nodes = spec.nodes.clone();
}
// set network path.
net_conf.net_config_path = Some(db_dirs.network_path().to_string_lossy().into_owned());
// create supervisor
let mut hypervisor = modules::hypervisor(&cmd.dirs.ipc_path());
// create client service.
let service = ClientService::start(
client_config,
&spec,
&client_path,
&snapshot_path,
&cmd.dirs.ipc_path(),
miner.clone(),
).map_err(|e| format!("Client service error: {:?}", e))?;
// drop the spec to free up genesis state.
drop(spec);
// forward panics from service
panic_handler.forward_from(&service);
// take handle to client
let client = service.client();
let snapshot_service = service.snapshot_service();
// initialize the local node information store.
let store = {
let db = service.db();
let node_info = FullNodeInfo {
miner: match cmd.no_persistent_txqueue {
true => None,
false => Some(miner.clone()),
}
};
let store = ::local_store::create(db, ::ethcore::db::COL_NODE_INFO, node_info);
if cmd.no_persistent_txqueue {
info!("Running without a persistent transaction queue.");
if let Err(e) = store.clear() {
warn!("Error clearing persistent transaction queue: {}", e);
}
}
// re-queue pending transactions.
match store.pending_transactions() {
Ok(pending) => {
for pending_tx in pending {
if let Err(e) = miner.import_own_transaction(&*client, pending_tx) {
warn!("Error importing saved transaction: {}", e)
}
}
}
Err(e) => warn!("Error loading cached pending transactions from disk: {}", e),
}
Arc::new(store)
};
// register it as an IO service to update periodically.
service.register_io_handler(store).map_err(|_| "Unable to register local store handler".to_owned())?;
// create external miner
let external_miner = Arc::new(ExternalMiner::default());
// start stratum
if let Some(ref stratum_config) = cmd.stratum {
Stratum::register(stratum_config, miner.clone(), Arc::downgrade(&client))
.map_err(|e| format!("Stratum start error: {:?}", e))?;
}
// create sync object
let (sync_provider, manage_network, chain_notify) = modules::sync(
&mut hypervisor,
sync_config,
net_conf.into(),
client.clone(),
snapshot_service.clone(),
client.clone(),
&cmd.logger_config,
).map_err(|e| format!("Sync error: {}", e))?;
service.add_notify(chain_notify.clone());
// start network
if network_enabled {
chain_notify.start();
}
// spin up event loop
let event_loop = EventLoop::spawn();
// fetch service
let fetch = FetchClient::new().map_err(|e| format!("Error starting fetch client: {:?}", e))?;
// the updater service
let updater = Updater::new(
Arc::downgrade(&(service.client() as Arc<BlockChainClient>)),
Arc::downgrade(&sync_provider),
update_policy,
fetch.clone(),
event_loop.remote(),
);
service.add_notify(updater.clone());
// set up dependencies for rpc servers
let rpc_stats = Arc::new(informant::RpcStats::default());
let signer_path = cmd.signer_conf.signer_path.clone();
let secret_store = match cmd.public_node {
true => None,
false => Some(account_provider.clone())
};
let deps_for_rpc_apis = Arc::new(rpc_apis::FullDependencies {
signer_service: Arc::new(rpc_apis::SignerService::new(move || {
signer::generate_new_token(signer_path.clone()).map_err(|e| format!("{:?}", e))
}, cmd.ui_address)),
snapshot: snapshot_service.clone(),
client: client.clone(),
sync: sync_provider.clone(),
net: manage_network.clone(),
secret_store: secret_store,
miner: miner.clone(),
external_miner: external_miner.clone(),
logger: logger.clone(),
settings: Arc::new(cmd.net_settings.clone()),
net_service: manage_network.clone(),
updater: updater.clone(),
geth_compatibility: cmd.geth_compatibility,
dapps_interface: match cmd.dapps_conf.enabled {
true => Some(cmd.http_conf.interface.clone()),
false => None,
},
dapps_port: match cmd.dapps_conf.enabled {
true => Some(cmd.http_conf.port),
false => None,
},
fetch: fetch.clone(),
remote: event_loop.remote(),
});
let dependencies = rpc::Dependencies {
apis: deps_for_rpc_apis.clone(),
remote: event_loop.raw_remote(),
stats: rpc_stats.clone(),
};
// the dapps server
let dapps_deps = {
let (sync, client) = (sync_provider.clone(), client.clone());
let contract_client = Arc::new(::dapps::FullRegistrar { client: client.clone() });
dapps::Dependencies {
sync_status: Arc::new(move || is_major_importing(Some(sync.status().state), client.queue_info())),
contract_client: contract_client,
remote: event_loop.raw_remote(),
fetch: fetch.clone(),
signer: deps_for_rpc_apis.signer_service.clone(),
}
};
let dapps_middleware = dapps::new(cmd.dapps_conf.clone(), dapps_deps)?;
// start rpc servers
let ws_server = rpc::new_ws(cmd.ws_conf, &dependencies)?;
let http_server = rpc::new_http(cmd.http_conf.clone(), &dependencies, dapps_middleware)?;
let ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
// the signer server
let signer_deps = signer::Dependencies {
apis: deps_for_rpc_apis.clone(),
remote: event_loop.raw_remote(),
rpc_stats: rpc_stats.clone(),
};
let signing_queue = deps_for_rpc_apis.signer_service.queue();
let signer_server = signer::start(cmd.signer_conf.clone(), signing_queue, signer_deps)?;
// secret store key server
let secretstore_deps = secretstore::Dependencies {
client: client.clone(),
};
let secretstore_key_server = secretstore::start(cmd.secretstore_conf.clone(), secretstore_deps)?;
// the ipfs server
let ipfs_server = ipfs::start_server(cmd.ipfs_conf.clone(), client.clone())?;
// the informant
let informant = Arc::new(Informant::new(
service.client(),
Some(sync_provider.clone()),
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.pruning = algorithm;
user_defaults.tracing = tracing;
user_defaults.fat_db = fat_db;
user_defaults.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.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.no_periodic_snapshot {
true => None,
false => {
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)
},
};
// start ui
if cmd.ui {
open_ui(&cmd.signer_conf)?;
}
if let Some(dapp) = cmd.dapp {
open_dapp(&cmd.dapps_conf, &cmd.http_conf, &dapp)?;
}
// Handle exit
let restart = wait_for_exit(panic_handler, Some(updater), Some(client), can_restart);
// drop this stuff as soon as exit detected.
drop((ws_server, http_server, ipc_server, signer_server, secretstore_key_server, ipfs_server, event_loop));
info!("Finishing work, please wait...");
// to make sure timer does not spawn requests while shutdown is in progress
informant.shutdown();
// just Arc is dropping here, to allow other reference release in its default time
drop(informant);
// hypervisor should be shutdown first while everything still works and can be
// terminated gracefully
drop(hypervisor);
Ok(restart)
}
#[cfg(not(windows))]
fn daemonize(pid_file: String) -> Result<(), String> {
extern crate daemonize;
daemonize::Daemonize::new()
.pid_file(pid_file)
.chown_pid_file(true)
.start()
.map(|_| ())
.map_err(|e| format!("Couldn't daemonize; {}", e))
}
#[cfg(windows)]
fn daemonize(_pid_file: String) -> Result<(), String> {
Err("daemon is no supported on windows".into())
}
fn prepare_account_provider(spec: &SpecType, dirs: &Directories, data_dir: &str, cfg: AccountsConfig, passwords: &[String]) -> Result<AccountProvider, String> {
use ethcore::ethstore::EthStore;
use ethcore::ethstore::dir::RootDiskDirectory;
let path = dirs.keys_path(data_dir);
upgrade_key_location(&dirs.legacy_keys_path(cfg.testnet), &path);
let dir = Box::new(RootDiskDirectory::create(&path).map_err(|e| format!("Could not open keys directory: {}", e))?);
let account_settings = AccountProviderSettings {
enable_hardware_wallets: cfg.enable_hardware_wallets,
hardware_wallet_classic_key: spec == &SpecType::Classic,
};
let account_provider = AccountProvider::new(
Box::new(EthStore::open_with_iterations(dir, cfg.iterations).map_err(|e| format!("Could not open keys directory: {}", e))?),
account_settings);
for a in cfg.unlocked_accounts {
// Check if the account exists
if !account_provider.has_account(a).unwrap_or(false) {
return Err(format!("Account {} not found for the current chain. {}", a, build_create_account_hint(spec, &dirs.keys)));
}
// Check if any passwords have been read from the password file(s)
if passwords.is_empty() {
return Err(format!("No password found to unlock account {}. {}", a, VERIFY_PASSWORD_HINT));
}
if !passwords.iter().any(|p| account_provider.unlock_account_permanently(a, (*p).clone()).is_ok()) {
return Err(format!("No valid password to unlock account {}. {}", a, VERIFY_PASSWORD_HINT));
}
}
Ok(account_provider)
}
// Construct an error `String` with an adaptive hint on how to create an account.
fn build_create_account_hint(spec: &SpecType, keys: &str) -> String {
format!("You can create an account via RPC, UI or `parity account new --chain {} --keys-path {}`.", spec, keys)
}
fn wait_for_exit(
panic_handler: Arc<PanicHandler>,
updater: Option<Arc<Updater>>,
client: Option<Arc<Client>>,
can_restart: bool
) -> (bool, Option<String>) {
let exit = Arc::new((Mutex::new((false, None)), Condvar::new()));
// Handle possible exits
let e = exit.clone();
CtrlC::set_handler(move || { e.1.notify_all(); });
// Handle panics
let e = exit.clone();
panic_handler.on_panic(move |_reason| { e.1.notify_all(); });
if can_restart {
if let Some(updater) = updater {
// Handle updater wanting to restart us
let e = exit.clone();
updater.set_exit_handler(move || { *e.0.lock() = (true, None); e.1.notify_all(); });
}
if let Some(client) = client {
// Handle updater wanting to restart us
let e = exit.clone();
client.set_exit_handler(move |restart, new_chain: Option<String>| { *e.0.lock() = (restart, new_chain); e.1.notify_all(); });
}
} else {
trace!(target: "mode", "Not hypervised: not setting exit handlers.");
}
// Wait for signal
let mut l = exit.0.lock();
let _ = exit.1.wait(&mut l);
l.clone()
}