grassrootseconomics/openethereum
5
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Use proper database configuration in snapshots. (#2052)

Browse Source 
* use proper database config in snapshot service

* add snapshot path to parity directories struct

* fix RPC tests
This commit is contained in:
Robert Habermeier 2016-09-07 15:27:28 +02:00 committed by Arkadiy Paronyan
parent 541b14a4ab
commit 57d5c35bb6
12 changed files with 218 additions and 95 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ethcore/src/client/client.rs
View File

@ -161,13 +161,10 @@ impl Client {
path: &Path,
miner: Arc<Miner>,
message_channel: IoChannel<ClientIoMessage>,
db_config: &DatabaseConfig,
) -> Result<Arc<Client>, ClientError> {
let path = path.to_path_buf();
let gb = spec.genesis_block();
let mut db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
db_config.cache_size = config.db_cache_size;
db_config.compaction = config.db_compaction.compaction_profile();
db_config.wal = config.db_wal;
let db = Arc::new(try!(Database::open(&db_config, &path.to_str().unwrap()).map_err(ClientError::Database)));
let chain = Arc::new(BlockChain::new(config.blockchain.clone(), &gb, db.clone()));

4
ethcore/src/json_tests/chain.rs
View File

@ -58,12 +58,14 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
let temp = RandomTempPath::new();
{
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
temp.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected()
IoChannel::disconnected(),
&db_config,
).unwrap();
for b in &blockchain.blocks_rlp() {
if Block::is_good(&b) {

47
ethcore/src/service.rs
View File

@ -23,7 +23,7 @@ use error::*;
use client::{Client, ClientConfig, ChainNotify};
use miner::Miner;
use snapshot::ManifestData;
use snapshot::service::Service as SnapshotService;
use snapshot::service::{Service as SnapshotService, ServiceParams as SnapServiceParams};
use std::sync::atomic::AtomicBool;
#[cfg(feature="ipc")]
@ -60,11 +60,12 @@ pub struct ClientService {
}
impl ClientService {
/// Start the service in a separate thread.
/// Start the `ClientService`.
pub fn start(
config: ClientConfig,
spec: &Spec,
db_path: &Path,
client_path: &Path,
snapshot_path: &Path,
ipc_path: &Path,
miner: Arc<Miner>,
) -> Result<ClientService, Error>
@ -78,11 +79,25 @@ impl ClientService {
warn!("Your chain is an alternative fork. {}", Colour::Red.bold().paint("TRANSACTIONS MAY BE REPLAYED ON THE MAINNET!"));
}
let pruning = config.pruning;
let client = try!(Client::new(config, &spec, db_path, miner, io_service.channel()));
let snapshot = try!(SnapshotService::new(spec, pruning, db_path.into(), io_service.channel(), client.clone()));
let mut db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
db_config.cache_size = config.db_cache_size;
db_config.compaction = config.db_compaction.compaction_profile();
db_config.wal = config.db_wal;
let snapshot = Arc::new(snapshot);
let pruning = config.pruning;
let client = try!(Client::new(config, &spec, client_path, miner, io_service.channel(), &db_config));
let snapshot_params = SnapServiceParams {
engine: spec.engine.clone(),
genesis_block: spec.genesis_block(),
db_config: db_config,
pruning: pruning,
channel: io_service.channel(),
snapshot_root: snapshot_path.into(),
client_db: client_path.into(),
db_restore: client.clone(),
};
let snapshot = Arc::new(try!(SnapshotService::new(snapshot_params)));
panic_handler.forward_from(&*client);
let client_io = Arc::new(ClientIoHandler {
@ -232,15 +247,25 @@ mod tests {
#[test]
fn it_can_be_started() {
let temp_path = RandomTempPath::new();
let mut path = temp_path.as_path().to_owned();
path.push("pruning");
path.push("db");
let path = temp_path.as_path().to_owned();
let client_path = {
let mut path = path.to_owned();
path.push("client");
path
};
let snapshot_path = {
let mut path = path.to_owned();
path.push("snapshot");
path
};
let spec = get_test_spec();
let service = ClientService::start(
ClientConfig::default(),
&spec,
&path,
&client_path,
&snapshot_path,
&path,
Arc::new(Miner::with_spec(&spec)),
);

119
ethcore/src/snapshot/service.rs
View File

@ -19,7 +19,7 @@
use std::collections::HashSet;
use std::io::ErrorKind;
use std::fs;
use std::path::{Path, PathBuf};
use std::path::PathBuf;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
@ -32,7 +32,6 @@ use engines::Engine;
use error::Error;
use ids::BlockID;
use service::ClientIoMessage;
use spec::Spec;
use io::IoChannel;
@ -81,6 +80,7 @@ struct RestorationParams<'a> {
manifest: ManifestData, // manifest to base restoration on.
pruning: Algorithm, // pruning algorithm for the database.
db_path: PathBuf, // database path
db_config: &'a DatabaseConfig,
writer: LooseWriter, // writer for recovered snapshot.
genesis: &'a [u8], // genesis block of the chain.
guard: Guard, // guard for the restoration directory.
@ -94,8 +94,7 @@ impl Restoration {
let state_chunks = manifest.state_hashes.iter().cloned().collect();
let block_chunks = manifest.block_hashes.iter().cloned().collect();
let cfg = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let raw_db = Arc::new(try!(Database::open(&cfg, &*params.db_path.to_string_lossy())
let raw_db = Arc::new(try!(Database::open(params.db_config, &*params.db_path.to_string_lossy())
.map_err(UtilError::SimpleString)));
let chain = BlockChain::new(Default::default(), params.genesis, raw_db.clone());
@ -173,15 +172,35 @@ impl Restoration {
/// Type alias for client io channel.
pub type Channel = IoChannel<ClientIoMessage>;
/// Service implementation.
///
/// This will replace the client's state DB as soon as the last state chunk
/// is fed, and will replace the client's blocks DB when the last block chunk
/// is fed.
/// Snapshot service parameters.
pub struct ServiceParams {
/// The consensus engine this is built on.
pub engine: Arc<Engine>,
/// The chain's genesis block.
pub genesis_block: Bytes,
/// Database configuration options.
pub db_config: DatabaseConfig,
/// State pruning algorithm.
pub pruning: Algorithm,
/// Async IO channel for sending messages.
pub channel: Channel,
/// The directory to put snapshots in.
/// Usually "<chain hash>/snapshot"
pub snapshot_root: PathBuf,
/// The client's database directory.
/// Usually "<chain hash>/<pruning>/db".
pub client_db: PathBuf,
/// A handle for database restoration.
pub db_restore: Arc<DatabaseRestore>,
}
/// `SnapshotService` implementation.
/// This controls taking snapshots and restoring from them.
pub struct Service {
restoration: Mutex<Option<Restoration>>,
client_db: PathBuf, // "<chain hash>/<pruning>/db"
db_path: PathBuf, // "<chain hash>/"
client_db: PathBuf,
snapshot_root: PathBuf,
db_config: DatabaseConfig,
io_channel: Channel,
pruning: Algorithm,
status: Mutex<RestorationStatus>,
@ -196,38 +215,28 @@ pub struct Service {
}
impl Service {
/// Create a new snapshot service.
pub fn new(spec: &Spec, pruning: Algorithm, client_db: PathBuf, io_channel: Channel, db_restore: Arc<DatabaseRestore>) -> Result<Self, Error> {
let db_path = try!(client_db.parent().and_then(Path::parent)
.ok_or_else(|| UtilError::SimpleString("Failed to find database root.".into()))).to_owned();
let reader = {
let mut snapshot_path = db_path.clone();
snapshot_path.push("snapshot");
snapshot_path.push("current");
LooseReader::new(snapshot_path).ok()
};
let service = Service {
/// Create a new snapshot service from the given parameters.
pub fn new(params: ServiceParams) -> Result<Self, Error> {
let mut service = Service {
restoration: Mutex::new(None),
client_db: client_db,
db_path: db_path,
io_channel: io_channel,
pruning: pruning,
client_db: params.client_db,
snapshot_root: params.snapshot_root,
db_config: params.db_config,
io_channel: params.channel,
pruning: params.pruning,
status: Mutex::new(RestorationStatus::Inactive),
reader: RwLock::new(reader),
engine: spec.engine.clone(),
genesis_block: spec.genesis_block(),
reader: RwLock::new(None),
engine: params.engine,
genesis_block: params.genesis_block,
state_chunks: AtomicUsize::new(0),
block_chunks: AtomicUsize::new(0),
db_restore: db_restore,
db_restore: params.db_restore,
progress: Default::default(),
taking_snapshot: AtomicBool::new(false),
};
// create the root snapshot dir if it doesn't exist.
if let Err(e) = fs::create_dir_all(service.root_dir()) {
if let Err(e) = fs::create_dir_all(&service.snapshot_root) {
if e.kind() != ErrorKind::AlreadyExists {
return Err(e.into())
}
@ -247,33 +256,29 @@ impl Service {
}
}
Ok(service)
}
let reader = LooseReader::new(service.snapshot_dir()).ok();
*service.reader.get_mut() = reader;
// get the root path.
fn root_dir(&self) -> PathBuf {
let mut dir = self.db_path.clone();
dir.push("snapshot");
dir
Ok(service)
}
// get the current snapshot dir.
fn snapshot_dir(&self) -> PathBuf {
let mut dir = self.root_dir();
let mut dir = self.snapshot_root.clone();
dir.push("current");
dir
}
// get the temporary snapshot dir.
fn temp_snapshot_dir(&self) -> PathBuf {
let mut dir = self.root_dir();
let mut dir = self.snapshot_root.clone();
dir.push("in_progress");
dir
}
// get the restoration directory.
fn restoration_dir(&self) -> PathBuf {
let mut dir = self.root_dir();
let mut dir = self.snapshot_root.clone();
dir.push("restoration");
dir
}
@ -377,6 +382,7 @@ impl Service {
manifest: manifest,
pruning: self.pruning,
db_path: self.restoration_db(),
db_config: &self.db_config,
writer: writer,
genesis: &self.genesis_block,
guard: Guard::new(rest_dir),
@ -564,19 +570,26 @@ mod tests {
#[test]
fn sends_async_messages() {
let service = IoService::<ClientIoMessage>::start().unwrap();
let spec = get_test_spec();
let dir = RandomTempPath::new();
let mut dir = dir.as_path().to_owned();
dir.push("pruning");
dir.push("db");
let mut client_db = dir.clone();
dir.push("snapshot");
client_db.push("client");
let service = Service::new(
&get_test_spec(),
Algorithm::Archive,
dir,
service.channel(),
Arc::new(NoopDBRestore),
).unwrap();
let snapshot_params = ServiceParams {
engine: spec.engine.clone(),
genesis_block: spec.genesis_block(),
db_config: Default::default(),
pruning: Algorithm::Archive,
channel: service.channel(),
snapshot_root: dir,
client_db: client_db,
db_restore: Arc::new(NoopDBRestore),
};
let service = Service::new(snapshot_params).unwrap();
assert!(service.manifest().is_none());
assert!(service.chunk(Default::default()).is_none());

43
ethcore/src/tests/client.rs
View File

@ -28,7 +28,16 @@ use rlp::{Rlp, View};
fn imports_from_empty() {
let dir = RandomTempPath::new();
let spec = get_test_spec();
let client = Client::new(ClientConfig::default(), &spec, dir.as_path(), Arc::new(Miner::with_spec(&spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
dir.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
client.import_verified_blocks();
client.flush_queue();
}
@ -37,7 +46,16 @@ fn imports_from_empty() {
fn should_return_registrar() {
let dir = RandomTempPath::new();
let spec = ethereum::new_morden();
let client = Client::new(ClientConfig::default(), &spec, dir.as_path(), Arc::new(Miner::with_spec(&spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
dir.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
assert_eq!(client.additional_params().get("registrar"), Some(&"8e4e9b13d4b45cb0befc93c3061b1408f67316b2".to_owned()));
}
@ -55,7 +73,16 @@ fn returns_state_root_basic() {
fn imports_good_block() {
let dir = RandomTempPath::new();
let spec = get_test_spec();
let client = Client::new(ClientConfig::default(), &spec, dir.as_path(), Arc::new(Miner::with_spec(&spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
dir.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
let good_block = get_good_dummy_block();
if let Err(_) = client.import_block(good_block) {
panic!("error importing block being good by definition");
@ -71,8 +98,16 @@ fn imports_good_block() {
fn query_none_block() {
let dir = RandomTempPath::new();
let spec = get_test_spec();
let client = Client::new(ClientConfig::default(), &spec, dir.as_path(), Arc::new(Miner::with_spec(&spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
dir.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
let non_existant = client.block_header(BlockID::Number(188));
assert!(non_existant.is_none());
}

24
ethcore/src/tests/helpers.rs
View File

@ -133,9 +133,17 @@ pub fn generate_dummy_client_with_data(block_number: u32, txs_per_block: usize,
pub fn generate_dummy_client_with_spec_and_data<F>(get_test_spec: F, block_number: u32, txs_per_block: usize, tx_gas_prices: &[U256]) -> GuardedTempResult<Arc<Client>> where F: Fn()->Spec {
let dir = RandomTempPath::new();
let test_spec = get_test_spec();
let client = Client::new(ClientConfig::default(), &test_spec, dir.as_path(), Arc::new(Miner::with_spec(&test_spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&test_spec,
dir.as_path(),
Arc::new(Miner::with_spec(&test_spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
let test_engine = &*test_spec.engine;
let mut db_result = get_temp_journal_db();
@ -233,7 +241,17 @@ pub fn push_blocks_to_client(client: &Arc<Client>, timestamp_salt: u64, starting
pub fn get_test_client_with_blocks(blocks: Vec<Bytes>) -> GuardedTempResult<Arc<Client>> {
let dir = RandomTempPath::new();
let test_spec = get_test_spec();
let client = Client::new(ClientConfig::default(), &test_spec, dir.as_path(), Arc::new(Miner::with_spec(&test_spec)), IoChannel::disconnected()).unwrap();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&test_spec,
dir.as_path(),
Arc::new(Miner::with_spec(&test_spec)),
IoChannel::disconnected(),
&db_config
).unwrap();
for block in &blocks {
if let Err(_) = client.import_block(block.clone()) {
panic!("panic importing block which is well-formed");

7
ethcore/src/tests/rpc.rs
View File

@ -25,18 +25,23 @@ use devtools::*;
use miner::Miner;
use crossbeam;
use io::IoChannel;
use util::kvdb::DatabaseConfig;
pub fn run_test_worker(scope: &crossbeam::Scope, stop: Arc<AtomicBool>, socket_path: &str) {
let socket_path = socket_path.to_owned();
scope.spawn(move || {
let temp = RandomTempPath::create_dir();
let spec = get_test_spec();
let db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
temp.as_path(),
Arc::new(Miner::with_spec(&spec)),
IoChannel::disconnected()).unwrap();
IoChannel::disconnected(),
&db_config
).unwrap();
let mut worker = nanoipc::Worker::new(&(client as Arc<BlockChainClient>));
worker.add_reqrep(&socket_path).unwrap();
while !stop.load(Ordering::Relaxed) {

17
parity/blockchain.rs
View File

@ -19,7 +19,6 @@ use std::{io, fs};
use std::io::{BufReader, BufRead};
use std::time::Duration;
use std::thread::sleep;
use std::path::Path;
use std::sync::Arc;
use rustc_serialize::hex::FromHex;
use ethcore_logger::{setup_log, Config as LogConfig};
@ -125,8 +124,9 @@ fn execute_import(cmd: ImportBlockchain) -> Result<String, String> {
// select pruning algorithm
let algorithm = cmd.pruning.to_algorithm(&cmd.dirs, genesis_hash, spec.fork_name.as_ref());
// prepare client_path
// prepare client and snapshot paths.
let client_path = cmd.dirs.client_path(genesis_hash, spec.fork_name.as_ref(), algorithm);
let snapshot_path = cmd.dirs.snapshot_path(genesis_hash, spec.fork_name.as_ref());
// execute upgrades
try!(execute_upgrades(&cmd.dirs, genesis_hash, spec.fork_name.as_ref(), algorithm, cmd.compaction.compaction_profile()));
@ -138,8 +138,9 @@ fn execute_import(cmd: ImportBlockchain) -> Result<String, String> {
let service = try!(ClientService::start(
client_config,
&spec,
Path::new(&client_path),
Path::new(&cmd.dirs.ipc_path()),
&client_path,
&snapshot_path,
&cmd.dirs.ipc_path(),
Arc::new(Miner::with_spec(&spec)),
).map_err(|e| format!("Client service error: {:?}", e)));
@ -237,8 +238,9 @@ fn execute_export(cmd: ExportBlockchain) -> Result<String, String> {
// select pruning algorithm
let algorithm = cmd.pruning.to_algorithm(&cmd.dirs, genesis_hash, spec.fork_name.as_ref());
// prepare client_path
// prepare client and snapshot paths.
let client_path = cmd.dirs.client_path(genesis_hash, spec.fork_name.as_ref(), algorithm);
let snapshot_path = cmd.dirs.snapshot_path(genesis_hash, spec.fork_name.as_ref());
// execute upgrades
try!(execute_upgrades(&cmd.dirs, genesis_hash, spec.fork_name.as_ref(), algorithm, cmd.compaction.compaction_profile()));
@ -249,8 +251,9 @@ fn execute_export(cmd: ExportBlockchain) -> Result<String, String> {
let service = try!(ClientService::start(
client_config,
&spec,
Path::new(&client_path),
Path::new(&cmd.dirs.ipc_path()),
&client_path,
&snapshot_path,
&cmd.dirs.ipc_path(),
Arc::new(Miner::with_spec(&spec)),
).map_err(|e| format!("Client service error: {:?}", e)));

17
parity/dir.rs
View File

@ -52,10 +52,16 @@ impl Directories {
Ok(())
}
/// Get the root path for database
pub fn db_version_path(&self, genesis_hash: H256, fork_name: Option<&String>, pruning: Algorithm) -> PathBuf {
/// Get the chain's root path.
pub fn chain_path(&self, genesis_hash: H256, fork_name: Option<&String>) -> PathBuf {
let mut dir = Path::new(&self.db).to_path_buf();
dir.push(format!("{:?}{}", H64::from(genesis_hash), fork_name.map(|f| format!("-{}", f)).unwrap_or_default()));
dir
}
/// Get the root path for database
pub fn db_version_path(&self, genesis_hash: H256, fork_name: Option<&String>, pruning: Algorithm) -> PathBuf {
let mut dir = self.chain_path(genesis_hash, fork_name);
dir.push(format!("v{}-sec-{}", LEGACY_CLIENT_DB_VER_STR, pruning.as_internal_name_str()));
dir
}
@ -67,6 +73,13 @@ impl Directories {
dir
}
/// Get the path for the snapshot directory given the genesis hash and fork name.
pub fn snapshot_path(&self, genesis_hash: H256, fork_name: Option<&String>) -> PathBuf {
let mut dir = self.chain_path(genesis_hash, fork_name);
dir.push("snapshot");
dir
}
/// Get the ipc sockets path
pub fn ipc_path(&self) -> PathBuf {
let mut dir = Path::new(&self.db).to_path_buf();

11
parity/run.rs
View File

@ -15,7 +15,6 @@
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use std::sync::{Arc, Mutex, Condvar};
use std::path::Path;
use std::io::ErrorKind;
use ctrlc::CtrlC;
use fdlimit::raise_fd_limit;
@ -110,8 +109,9 @@ pub fn execute(cmd: RunCmd) -> Result<(), String> {
// select pruning algorithm
let algorithm = cmd.pruning.to_algorithm(&cmd.dirs, genesis_hash, fork_name.as_ref());
// prepare client_path
// prepare client and snapshot paths.
let client_path = cmd.dirs.client_path(genesis_hash, fork_name.as_ref(), algorithm);
let snapshot_path = cmd.dirs.snapshot_path(genesis_hash, fork_name.as_ref());
// execute upgrades
try!(execute_upgrades(&cmd.dirs, genesis_hash, fork_name.as_ref(), algorithm, cmd.compaction.compaction_profile()));
@ -171,14 +171,15 @@ pub fn execute(cmd: RunCmd) -> Result<(), String> {
}
// create supervisor
let mut hypervisor = modules::hypervisor(Path::new(&cmd.dirs.ipc_path()));
let mut hypervisor = modules::hypervisor(&cmd.dirs.ipc_path());
// create client service.
let service = try!(ClientService::start(
client_config,
&spec,
Path::new(&client_path),
Path::new(&cmd.dirs.ipc_path()),
&client_path,
&snapshot_path,
&cmd.dirs.ipc_path(),
miner.clone(),
).map_err(|e| format!("Client service error: {:?}", e)));

8
parity/snapshot.rs
View File

@ -82,8 +82,9 @@ impl SnapshotCommand {
// select pruning algorithm
let algorithm = self.pruning.to_algorithm(&self.dirs, genesis_hash, spec.fork_name.as_ref());
// prepare client_path
// prepare client and snapshot paths.
let client_path = self.dirs.client_path(genesis_hash, spec.fork_name.as_ref(), algorithm);
let snapshot_path = self.dirs.snapshot_path(genesis_hash, spec.fork_name.as_ref());
// execute upgrades
try!(execute_upgrades(&self.dirs, genesis_hash, spec.fork_name.as_ref(), algorithm, self.compaction.compaction_profile()));
@ -94,8 +95,9 @@ impl SnapshotCommand {
let service = try!(ClientService::start(
client_config,
&spec,
Path::new(&client_path),
Path::new(&self.dirs.ipc_path()),
&client_path,
&snapshot_path,
&self.dirs.ipc_path(),
Arc::new(Miner::with_spec(&spec))
).map_err(|e| format!("Client service error: {:?}", e)));

11
rpc/src/v1/tests/eth.rs
View File

@ -108,7 +108,16 @@ impl EthTester {
let dir = RandomTempPath::new();
let account_provider = account_provider();
let miner_service = miner_service(&spec, account_provider.clone());
let client = Client::new(ClientConfig::default(), &spec, dir.as_path(), miner_service.clone(), IoChannel::disconnected()).unwrap();
let db_config = ::util::kvdb::DatabaseConfig::with_columns(::ethcore::db::NUM_COLUMNS);
let client = Client::new(
ClientConfig::default(),
&spec,
dir.as_path(),
miner_service.clone(),
IoChannel::disconnected(),
&db_config
).unwrap();
let sync_provider = sync_provider();
let external_miner = Arc::new(ExternalMiner::default());