688 lines
22 KiB
Rust
688 lines
22 KiB
Rust
//! The `thin_client` module is a client-side object that interfaces with
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//! a server-side TPU. Client code should use this object instead of writing
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//! messages to the network directly. The binary encoding of its messages are
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//! unstable and may change in future releases.
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use {
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log::*,
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rayon::iter::{IntoParallelIterator, ParallelIterator},
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solana_connection_cache::{
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client_connection::ClientConnection,
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connection_cache::{
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ConnectionCache, ConnectionManager, ConnectionPool, NewConnectionConfig,
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},
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},
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solana_rpc_client::rpc_client::RpcClient,
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solana_rpc_client_api::{config::RpcProgramAccountsConfig, response::Response},
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solana_sdk::{
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account::Account,
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client::{AsyncClient, Client, SyncClient},
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clock::{Slot, MAX_PROCESSING_AGE},
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commitment_config::CommitmentConfig,
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epoch_info::EpochInfo,
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fee_calculator::{FeeCalculator, FeeRateGovernor},
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hash::Hash,
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instruction::Instruction,
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message::Message,
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pubkey::Pubkey,
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signature::{Keypair, Signature, Signer},
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signers::Signers,
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system_instruction,
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timing::duration_as_ms,
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transaction::{self, Transaction, VersionedTransaction},
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transport::Result as TransportResult,
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},
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std::{
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io,
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net::SocketAddr,
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sync::{
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atomic::{AtomicBool, AtomicUsize, Ordering},
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Arc, RwLock,
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},
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time::{Duration, Instant},
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},
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};
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struct ClientOptimizer {
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cur_index: AtomicUsize,
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experiment_index: AtomicUsize,
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experiment_done: AtomicBool,
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times: RwLock<Vec<u64>>,
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num_clients: usize,
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}
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impl ClientOptimizer {
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fn new(num_clients: usize) -> Self {
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Self {
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cur_index: AtomicUsize::new(0),
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experiment_index: AtomicUsize::new(0),
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experiment_done: AtomicBool::new(false),
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times: RwLock::new(vec![std::u64::MAX; num_clients]),
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num_clients,
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}
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}
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fn experiment(&self) -> usize {
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if self.experiment_index.load(Ordering::Relaxed) < self.num_clients {
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let old = self.experiment_index.fetch_add(1, Ordering::Relaxed);
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if old < self.num_clients {
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old
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} else {
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self.best()
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}
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} else {
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self.best()
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}
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}
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fn report(&self, index: usize, time_ms: u64) {
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if self.num_clients > 1
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&& (!self.experiment_done.load(Ordering::Relaxed) || time_ms == std::u64::MAX)
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{
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trace!(
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"report {} with {} exp: {}",
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index,
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time_ms,
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self.experiment_index.load(Ordering::Relaxed)
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);
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self.times.write().unwrap()[index] = time_ms;
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if index == (self.num_clients - 1) || time_ms == std::u64::MAX {
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let times = self.times.read().unwrap();
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let (min_time, min_index) = min_index(×);
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trace!(
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"done experimenting min: {} time: {} times: {:?}",
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min_index,
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min_time,
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times
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);
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// Only 1 thread should grab the num_clients-1 index, so this should be ok.
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self.cur_index.store(min_index, Ordering::Relaxed);
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self.experiment_done.store(true, Ordering::Relaxed);
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}
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}
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}
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fn best(&self) -> usize {
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self.cur_index.load(Ordering::Relaxed)
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}
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}
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/// An object for querying and sending transactions to the network.
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pub struct ThinClient<
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P, // ConnectionPool
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M, // ConnectionManager
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C, // NewConnectionConfig
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> {
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rpc_clients: Vec<RpcClient>,
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tpu_addrs: Vec<SocketAddr>,
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optimizer: ClientOptimizer,
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connection_cache: Arc<ConnectionCache<P, M, C>>,
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}
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impl<P, M, C> ThinClient<P, M, C>
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where
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P: ConnectionPool<NewConnectionConfig = C>,
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M: ConnectionManager<ConnectionPool = P, NewConnectionConfig = C>,
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C: NewConnectionConfig,
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{
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/// Create a new ThinClient that will interface with the Rpc at `rpc_addr` using TCP
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/// and the Tpu at `tpu_addr` over `transactions_socket` using Quic or UDP
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/// (currently hardcoded to UDP)
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pub fn new(
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rpc_addr: SocketAddr,
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tpu_addr: SocketAddr,
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connection_cache: Arc<ConnectionCache<P, M, C>>,
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) -> Self {
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Self::new_from_client(RpcClient::new_socket(rpc_addr), tpu_addr, connection_cache)
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}
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pub fn new_socket_with_timeout(
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rpc_addr: SocketAddr,
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tpu_addr: SocketAddr,
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timeout: Duration,
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connection_cache: Arc<ConnectionCache<P, M, C>>,
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) -> Self {
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let rpc_client = RpcClient::new_socket_with_timeout(rpc_addr, timeout);
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Self::new_from_client(rpc_client, tpu_addr, connection_cache)
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}
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fn new_from_client(
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rpc_client: RpcClient,
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tpu_addr: SocketAddr,
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connection_cache: Arc<ConnectionCache<P, M, C>>,
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) -> Self {
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Self {
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rpc_clients: vec![rpc_client],
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tpu_addrs: vec![tpu_addr],
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optimizer: ClientOptimizer::new(0),
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connection_cache,
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}
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}
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pub fn new_from_addrs(
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rpc_addrs: Vec<SocketAddr>,
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tpu_addrs: Vec<SocketAddr>,
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connection_cache: Arc<ConnectionCache<P, M, C>>,
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) -> Self {
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assert!(!rpc_addrs.is_empty());
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assert_eq!(rpc_addrs.len(), tpu_addrs.len());
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let rpc_clients: Vec<_> = rpc_addrs.into_iter().map(RpcClient::new_socket).collect();
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let optimizer = ClientOptimizer::new(rpc_clients.len());
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Self {
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rpc_clients,
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tpu_addrs,
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optimizer,
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connection_cache,
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}
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}
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fn tpu_addr(&self) -> &SocketAddr {
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&self.tpu_addrs[self.optimizer.best()]
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}
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pub fn rpc_client(&self) -> &RpcClient {
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&self.rpc_clients[self.optimizer.best()]
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}
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/// Retry a sending a signed Transaction to the server for processing.
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pub fn retry_transfer_until_confirmed(
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&self,
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keypair: &Keypair,
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transaction: &mut Transaction,
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tries: usize,
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min_confirmed_blocks: usize,
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) -> TransportResult<Signature> {
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self.send_and_confirm_transaction(&[keypair], transaction, tries, min_confirmed_blocks)
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}
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/// Retry sending a signed Transaction with one signing Keypair to the server for processing.
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pub fn retry_transfer(
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&self,
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keypair: &Keypair,
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transaction: &mut Transaction,
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tries: usize,
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) -> TransportResult<Signature> {
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self.send_and_confirm_transaction(&[keypair], transaction, tries, 0)
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}
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pub fn send_and_confirm_transaction<T: Signers + ?Sized>(
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&self,
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keypairs: &T,
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transaction: &mut Transaction,
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tries: usize,
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pending_confirmations: usize,
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) -> TransportResult<Signature> {
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for x in 0..tries {
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let now = Instant::now();
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let mut num_confirmed = 0;
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let mut wait_time = MAX_PROCESSING_AGE;
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// resend the same transaction until the transaction has no chance of succeeding
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let wire_transaction =
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bincode::serialize(&transaction).expect("transaction serialization failed");
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while now.elapsed().as_secs() < wait_time as u64 {
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if num_confirmed == 0 {
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let conn = self.connection_cache.get_connection(self.tpu_addr());
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// Send the transaction if there has been no confirmation (e.g. the first time)
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#[allow(clippy::needless_borrow)]
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conn.send_data(&wire_transaction)?;
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}
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if let Ok(confirmed_blocks) = self.poll_for_signature_confirmation(
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&transaction.signatures[0],
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pending_confirmations,
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) {
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num_confirmed = confirmed_blocks;
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if confirmed_blocks >= pending_confirmations {
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return Ok(transaction.signatures[0]);
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}
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// Since network has seen the transaction, wait longer to receive
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// all pending confirmations. Resending the transaction could result into
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// extra transaction fees
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wait_time = wait_time.max(
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MAX_PROCESSING_AGE * pending_confirmations.saturating_sub(num_confirmed),
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);
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}
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}
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info!("{} tries failed transfer to {}", x, self.tpu_addr());
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let blockhash = self.get_latest_blockhash()?;
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transaction.sign(keypairs, blockhash);
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}
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Err(io::Error::new(
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io::ErrorKind::Other,
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format!("retry_transfer failed in {tries} retries"),
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)
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.into())
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}
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pub fn poll_get_balance(&self, pubkey: &Pubkey) -> TransportResult<u64> {
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self.poll_get_balance_with_commitment(pubkey, CommitmentConfig::default())
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}
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pub fn poll_get_balance_with_commitment(
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&self,
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pubkey: &Pubkey,
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commitment_config: CommitmentConfig,
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) -> TransportResult<u64> {
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self.rpc_client()
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.poll_get_balance_with_commitment(pubkey, commitment_config)
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.map_err(|e| e.into())
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}
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pub fn wait_for_balance(&self, pubkey: &Pubkey, expected_balance: Option<u64>) -> Option<u64> {
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self.rpc_client().wait_for_balance_with_commitment(
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pubkey,
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expected_balance,
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CommitmentConfig::default(),
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)
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}
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pub fn get_program_accounts_with_config(
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&self,
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pubkey: &Pubkey,
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config: RpcProgramAccountsConfig,
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) -> TransportResult<Vec<(Pubkey, Account)>> {
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self.rpc_client()
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.get_program_accounts_with_config(pubkey, config)
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.map_err(|e| e.into())
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}
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pub fn wait_for_balance_with_commitment(
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&self,
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pubkey: &Pubkey,
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expected_balance: Option<u64>,
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commitment_config: CommitmentConfig,
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) -> Option<u64> {
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self.rpc_client().wait_for_balance_with_commitment(
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pubkey,
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expected_balance,
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commitment_config,
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)
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}
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pub fn poll_for_signature_with_commitment(
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&self,
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signature: &Signature,
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commitment_config: CommitmentConfig,
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) -> TransportResult<()> {
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self.rpc_client()
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.poll_for_signature_with_commitment(signature, commitment_config)
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.map_err(|e| e.into())
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}
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pub fn get_num_blocks_since_signature_confirmation(
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&mut self,
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sig: &Signature,
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) -> TransportResult<usize> {
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self.rpc_client()
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.get_num_blocks_since_signature_confirmation(sig)
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.map_err(|e| e.into())
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}
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}
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impl<P, M, C> Client for ThinClient<P, M, C>
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where
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P: ConnectionPool<NewConnectionConfig = C>,
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M: ConnectionManager<ConnectionPool = P, NewConnectionConfig = C>,
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C: NewConnectionConfig,
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{
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fn tpu_addr(&self) -> String {
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self.tpu_addr().to_string()
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}
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}
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impl<P, M, C> SyncClient for ThinClient<P, M, C>
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where
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P: ConnectionPool<NewConnectionConfig = C>,
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M: ConnectionManager<ConnectionPool = P, NewConnectionConfig = C>,
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C: NewConnectionConfig,
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{
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fn send_and_confirm_message<T: Signers + ?Sized>(
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&self,
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keypairs: &T,
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message: Message,
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) -> TransportResult<Signature> {
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let blockhash = self.get_latest_blockhash()?;
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let mut transaction = Transaction::new(keypairs, message, blockhash);
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let signature = self.send_and_confirm_transaction(keypairs, &mut transaction, 5, 0)?;
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Ok(signature)
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}
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fn send_and_confirm_instruction(
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&self,
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keypair: &Keypair,
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instruction: Instruction,
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) -> TransportResult<Signature> {
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let message = Message::new(&[instruction], Some(&keypair.pubkey()));
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self.send_and_confirm_message(&[keypair], message)
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}
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fn transfer_and_confirm(
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&self,
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lamports: u64,
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keypair: &Keypair,
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pubkey: &Pubkey,
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) -> TransportResult<Signature> {
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let transfer_instruction =
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system_instruction::transfer(&keypair.pubkey(), pubkey, lamports);
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self.send_and_confirm_instruction(keypair, transfer_instruction)
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}
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fn get_account_data(&self, pubkey: &Pubkey) -> TransportResult<Option<Vec<u8>>> {
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Ok(self.rpc_client().get_account_data(pubkey).ok())
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}
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fn get_account(&self, pubkey: &Pubkey) -> TransportResult<Option<Account>> {
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let account = self.rpc_client().get_account(pubkey);
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match account {
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Ok(value) => Ok(Some(value)),
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Err(_) => Ok(None),
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}
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}
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fn get_account_with_commitment(
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&self,
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pubkey: &Pubkey,
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commitment_config: CommitmentConfig,
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) -> TransportResult<Option<Account>> {
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self.rpc_client()
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.get_account_with_commitment(pubkey, commitment_config)
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.map_err(|e| e.into())
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.map(|r| r.value)
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}
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fn get_balance(&self, pubkey: &Pubkey) -> TransportResult<u64> {
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self.rpc_client().get_balance(pubkey).map_err(|e| e.into())
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}
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fn get_balance_with_commitment(
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&self,
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pubkey: &Pubkey,
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commitment_config: CommitmentConfig,
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) -> TransportResult<u64> {
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self.rpc_client()
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.get_balance_with_commitment(pubkey, commitment_config)
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.map_err(|e| e.into())
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.map(|r| r.value)
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}
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fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> TransportResult<u64> {
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self.rpc_client()
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.get_minimum_balance_for_rent_exemption(data_len)
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.map_err(|e| e.into())
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}
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fn get_recent_blockhash(&self) -> TransportResult<(Hash, FeeCalculator)> {
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#[allow(deprecated)]
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let (blockhash, fee_calculator, _last_valid_slot) =
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self.get_recent_blockhash_with_commitment(CommitmentConfig::default())?;
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Ok((blockhash, fee_calculator))
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}
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fn get_recent_blockhash_with_commitment(
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&self,
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commitment_config: CommitmentConfig,
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) -> TransportResult<(Hash, FeeCalculator, Slot)> {
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let index = self.optimizer.experiment();
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let now = Instant::now();
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#[allow(deprecated)]
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let recent_blockhash =
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self.rpc_clients[index].get_recent_blockhash_with_commitment(commitment_config);
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match recent_blockhash {
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Ok(Response { value, .. }) => {
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self.optimizer.report(index, duration_as_ms(&now.elapsed()));
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Ok((value.0, value.1, value.2))
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}
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Err(e) => {
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self.optimizer.report(index, std::u64::MAX);
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Err(e.into())
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}
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}
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}
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fn get_fee_calculator_for_blockhash(
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&self,
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blockhash: &Hash,
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) -> TransportResult<Option<FeeCalculator>> {
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#[allow(deprecated)]
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self.rpc_client()
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.get_fee_calculator_for_blockhash(blockhash)
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.map_err(|e| e.into())
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}
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fn get_fee_rate_governor(&self) -> TransportResult<FeeRateGovernor> {
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#[allow(deprecated)]
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self.rpc_client()
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.get_fee_rate_governor()
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.map_err(|e| e.into())
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.map(|r| r.value)
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}
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fn get_signature_status(
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&self,
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signature: &Signature,
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) -> TransportResult<Option<transaction::Result<()>>> {
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let status = self
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.rpc_client()
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.get_signature_status(signature)
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.map_err(|err| {
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io::Error::new(
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io::ErrorKind::Other,
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format!("send_transaction failed with error {err:?}"),
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)
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})?;
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Ok(status)
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}
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fn get_signature_status_with_commitment(
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&self,
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signature: &Signature,
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commitment_config: CommitmentConfig,
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) -> TransportResult<Option<transaction::Result<()>>> {
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let status = self
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.rpc_client()
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.get_signature_status_with_commitment(signature, commitment_config)
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.map_err(|err| {
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io::Error::new(
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io::ErrorKind::Other,
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format!("send_transaction failed with error {err:?}"),
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)
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})?;
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Ok(status)
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}
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fn get_slot(&self) -> TransportResult<u64> {
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self.get_slot_with_commitment(CommitmentConfig::default())
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}
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fn get_slot_with_commitment(
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&self,
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commitment_config: CommitmentConfig,
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) -> TransportResult<u64> {
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let slot = self
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.rpc_client()
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.get_slot_with_commitment(commitment_config)
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.map_err(|err| {
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io::Error::new(
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io::ErrorKind::Other,
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format!("send_transaction failed with error {err:?}"),
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)
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})?;
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Ok(slot)
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}
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fn get_epoch_info(&self) -> TransportResult<EpochInfo> {
|
|
self.rpc_client().get_epoch_info().map_err(|e| e.into())
|
|
}
|
|
|
|
fn get_transaction_count(&self) -> TransportResult<u64> {
|
|
let index = self.optimizer.experiment();
|
|
let now = Instant::now();
|
|
match self.rpc_client().get_transaction_count() {
|
|
Ok(transaction_count) => {
|
|
self.optimizer.report(index, duration_as_ms(&now.elapsed()));
|
|
Ok(transaction_count)
|
|
}
|
|
Err(e) => {
|
|
self.optimizer.report(index, std::u64::MAX);
|
|
Err(e.into())
|
|
}
|
|
}
|
|
}
|
|
|
|
fn get_transaction_count_with_commitment(
|
|
&self,
|
|
commitment_config: CommitmentConfig,
|
|
) -> TransportResult<u64> {
|
|
let index = self.optimizer.experiment();
|
|
let now = Instant::now();
|
|
match self
|
|
.rpc_client()
|
|
.get_transaction_count_with_commitment(commitment_config)
|
|
{
|
|
Ok(transaction_count) => {
|
|
self.optimizer.report(index, duration_as_ms(&now.elapsed()));
|
|
Ok(transaction_count)
|
|
}
|
|
Err(e) => {
|
|
self.optimizer.report(index, std::u64::MAX);
|
|
Err(e.into())
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Poll the server until the signature has been confirmed by at least `min_confirmed_blocks`
|
|
fn poll_for_signature_confirmation(
|
|
&self,
|
|
signature: &Signature,
|
|
min_confirmed_blocks: usize,
|
|
) -> TransportResult<usize> {
|
|
self.rpc_client()
|
|
.poll_for_signature_confirmation(signature, min_confirmed_blocks)
|
|
.map_err(|e| e.into())
|
|
}
|
|
|
|
fn poll_for_signature(&self, signature: &Signature) -> TransportResult<()> {
|
|
self.rpc_client()
|
|
.poll_for_signature(signature)
|
|
.map_err(|e| e.into())
|
|
}
|
|
|
|
fn get_new_blockhash(&self, blockhash: &Hash) -> TransportResult<(Hash, FeeCalculator)> {
|
|
#[allow(deprecated)]
|
|
self.rpc_client()
|
|
.get_new_blockhash(blockhash)
|
|
.map_err(|e| e.into())
|
|
}
|
|
|
|
fn get_latest_blockhash(&self) -> TransportResult<Hash> {
|
|
let (blockhash, _) =
|
|
self.get_latest_blockhash_with_commitment(CommitmentConfig::default())?;
|
|
Ok(blockhash)
|
|
}
|
|
|
|
fn get_latest_blockhash_with_commitment(
|
|
&self,
|
|
commitment_config: CommitmentConfig,
|
|
) -> TransportResult<(Hash, u64)> {
|
|
let index = self.optimizer.experiment();
|
|
let now = Instant::now();
|
|
match self.rpc_clients[index].get_latest_blockhash_with_commitment(commitment_config) {
|
|
Ok((blockhash, last_valid_block_height)) => {
|
|
self.optimizer.report(index, duration_as_ms(&now.elapsed()));
|
|
Ok((blockhash, last_valid_block_height))
|
|
}
|
|
Err(e) => {
|
|
self.optimizer.report(index, std::u64::MAX);
|
|
Err(e.into())
|
|
}
|
|
}
|
|
}
|
|
|
|
fn is_blockhash_valid(
|
|
&self,
|
|
blockhash: &Hash,
|
|
commitment_config: CommitmentConfig,
|
|
) -> TransportResult<bool> {
|
|
self.rpc_client()
|
|
.is_blockhash_valid(blockhash, commitment_config)
|
|
.map_err(|e| e.into())
|
|
}
|
|
|
|
fn get_fee_for_message(&self, message: &Message) -> TransportResult<u64> {
|
|
self.rpc_client()
|
|
.get_fee_for_message(message)
|
|
.map_err(|e| e.into())
|
|
}
|
|
}
|
|
|
|
impl<P, M, C> AsyncClient for ThinClient<P, M, C>
|
|
where
|
|
P: ConnectionPool<NewConnectionConfig = C>,
|
|
M: ConnectionManager<ConnectionPool = P, NewConnectionConfig = C>,
|
|
C: NewConnectionConfig,
|
|
{
|
|
fn async_send_versioned_transaction(
|
|
&self,
|
|
transaction: VersionedTransaction,
|
|
) -> TransportResult<Signature> {
|
|
let conn = self.connection_cache.get_connection(self.tpu_addr());
|
|
let wire_transaction =
|
|
bincode::serialize(&transaction).expect("serialize Transaction in send_batch");
|
|
conn.send_data(&wire_transaction)?;
|
|
Ok(transaction.signatures[0])
|
|
}
|
|
|
|
fn async_send_versioned_transaction_batch(
|
|
&self,
|
|
batch: Vec<VersionedTransaction>,
|
|
) -> TransportResult<()> {
|
|
let conn = self.connection_cache.get_connection(self.tpu_addr());
|
|
let buffers = batch
|
|
.into_par_iter()
|
|
.map(|tx| bincode::serialize(&tx).expect("serialize Transaction in send_batch"))
|
|
.collect::<Vec<_>>();
|
|
conn.send_data_batch(&buffers)?;
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
fn min_index(array: &[u64]) -> (u64, usize) {
|
|
let mut min_time = std::u64::MAX;
|
|
let mut min_index = 0;
|
|
for (i, time) in array.iter().enumerate() {
|
|
if *time < min_time {
|
|
min_time = *time;
|
|
min_index = i;
|
|
}
|
|
}
|
|
(min_time, min_index)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_client_optimizer() {
|
|
solana_logger::setup();
|
|
|
|
const NUM_CLIENTS: usize = 5;
|
|
let optimizer = ClientOptimizer::new(NUM_CLIENTS);
|
|
(0..NUM_CLIENTS).into_par_iter().for_each(|_| {
|
|
let index = optimizer.experiment();
|
|
optimizer.report(index, (NUM_CLIENTS - index) as u64);
|
|
});
|
|
|
|
let index = optimizer.experiment();
|
|
optimizer.report(index, 50);
|
|
assert_eq!(optimizer.best(), NUM_CLIENTS - 1);
|
|
|
|
optimizer.report(optimizer.best(), std::u64::MAX);
|
|
assert_eq!(optimizer.best(), NUM_CLIENTS - 2);
|
|
}
|
|
}
|