337 lines
11 KiB
Rust
337 lines
11 KiB
Rust
use crate::bank::Bank;
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use solana_sdk::{
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account::Account,
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client::{AsyncClient, Client, SyncClient},
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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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transaction::{self, Transaction},
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transport::{Result, TransportError},
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};
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use std::{
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io,
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sync::{
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mpsc::{channel, Receiver, Sender},
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Arc, Mutex,
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},
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thread::{sleep, Builder},
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time::{Duration, Instant},
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};
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pub struct BankClient {
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bank: Arc<Bank>,
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transaction_sender: Mutex<Sender<Transaction>>,
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}
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impl Client for BankClient {
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fn tpu_addr(&self) -> String {
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"Local BankClient".to_string()
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}
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}
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impl AsyncClient for BankClient {
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fn async_send_transaction(&self, transaction: Transaction) -> Result<Signature> {
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let signature = transaction.signatures.get(0).cloned().unwrap_or_default();
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let transaction_sender = self.transaction_sender.lock().unwrap();
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transaction_sender.send(transaction).unwrap();
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Ok(signature)
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}
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fn async_send_message<T: Signers>(
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&self,
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keypairs: &T,
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message: Message,
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recent_blockhash: Hash,
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) -> Result<Signature> {
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let transaction = Transaction::new(keypairs, message, recent_blockhash);
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self.async_send_transaction(transaction)
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}
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fn async_send_instruction(
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&self,
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keypair: &Keypair,
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instruction: Instruction,
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recent_blockhash: Hash,
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) -> Result<Signature> {
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let message = Message::new(&[instruction], Some(&keypair.pubkey()));
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self.async_send_message(&[keypair], message, recent_blockhash)
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}
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/// Transfer `lamports` from `keypair` to `pubkey`
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fn async_transfer(
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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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recent_blockhash: Hash,
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) -> Result<Signature> {
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let transfer_instruction =
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system_instruction::transfer(&keypair.pubkey(), pubkey, lamports);
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self.async_send_instruction(keypair, transfer_instruction, recent_blockhash)
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}
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}
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impl SyncClient for BankClient {
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fn send_and_confirm_message<T: Signers>(
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&self,
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keypairs: &T,
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message: Message,
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) -> Result<Signature> {
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let blockhash = self.bank.last_blockhash();
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let transaction = Transaction::new(keypairs, message, blockhash);
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self.bank.process_transaction(&transaction)?;
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Ok(transaction.signatures.get(0).cloned().unwrap_or_default())
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}
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/// Create and process a transaction from a single instruction.
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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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) -> Result<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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/// Transfer `lamports` from `keypair` to `pubkey`
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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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) -> Result<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) -> Result<Option<Vec<u8>>> {
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Ok(self
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.bank
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.get_account(pubkey)
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.map(|account| Account::from(account).data))
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}
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fn get_account(&self, pubkey: &Pubkey) -> Result<Option<Account>> {
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Ok(self.bank.get_account(pubkey).map(Account::from))
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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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) -> Result<Option<Account>> {
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Ok(self.bank.get_account(pubkey).map(Account::from))
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}
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fn get_balance(&self, pubkey: &Pubkey) -> Result<u64> {
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Ok(self.bank.get_balance(pubkey))
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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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) -> Result<u64> {
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Ok(self.bank.get_balance(pubkey))
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}
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fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> Result<u64> {
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Ok(self.bank.get_minimum_balance_for_rent_exemption(data_len))
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}
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fn get_recent_blockhash(&self) -> Result<(Hash, FeeCalculator)> {
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Ok(self.bank.last_blockhash_with_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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) -> Result<(Hash, FeeCalculator, u64)> {
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let (blockhash, fee_calculator) = self.bank.last_blockhash_with_fee_calculator();
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#[allow(deprecated)]
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let last_valid_slot = self
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.bank
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.get_blockhash_last_valid_slot(&blockhash)
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.expect("bank blockhash queue should contain blockhash");
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Ok((blockhash, fee_calculator, last_valid_slot))
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}
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fn get_fee_calculator_for_blockhash(&self, blockhash: &Hash) -> Result<Option<FeeCalculator>> {
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Ok(self.bank.get_fee_calculator(blockhash))
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}
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fn get_fee_rate_governor(&self) -> Result<FeeRateGovernor> {
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Ok(self.bank.get_fee_rate_governor().clone())
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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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) -> Result<Option<transaction::Result<()>>> {
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Ok(self.bank.get_signature_status(signature))
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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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) -> Result<Option<transaction::Result<()>>> {
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Ok(self.bank.get_signature_status(signature))
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}
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fn get_slot(&self) -> Result<u64> {
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Ok(self.bank.slot())
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}
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fn get_slot_with_commitment(&self, _commitment_config: CommitmentConfig) -> Result<u64> {
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Ok(self.bank.slot())
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}
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fn get_transaction_count(&self) -> Result<u64> {
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Ok(self.bank.transaction_count())
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}
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fn get_transaction_count_with_commitment(
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&self,
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_commitment_config: CommitmentConfig,
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) -> Result<u64> {
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Ok(self.bank.transaction_count())
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}
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fn poll_for_signature_confirmation(
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&self,
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signature: &Signature,
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min_confirmed_blocks: usize,
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) -> Result<usize> {
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// https://github.com/solana-labs/solana/issues/7199
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assert_eq!(min_confirmed_blocks, 1, "BankClient cannot observe the passage of multiple blocks, so min_confirmed_blocks must be 1");
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let now = Instant::now();
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let confirmed_blocks;
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loop {
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if self.bank.get_signature_status(signature).is_some() {
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confirmed_blocks = 1;
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break;
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}
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if now.elapsed().as_secs() > 15 {
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return Err(TransportError::IoError(io::Error::new(
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io::ErrorKind::Other,
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format!(
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"signature not found after {} seconds",
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now.elapsed().as_secs()
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),
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)));
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}
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sleep(Duration::from_millis(250));
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}
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Ok(confirmed_blocks)
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}
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fn poll_for_signature(&self, signature: &Signature) -> Result<()> {
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let now = Instant::now();
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loop {
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let response = self.bank.get_signature_status(signature);
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if let Some(res) = response {
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if res.is_ok() {
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break;
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}
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}
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if now.elapsed().as_secs() > 15 {
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return Err(TransportError::IoError(io::Error::new(
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io::ErrorKind::Other,
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format!(
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"signature not found after {} seconds",
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now.elapsed().as_secs()
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),
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)));
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}
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sleep(Duration::from_millis(250));
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}
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Ok(())
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}
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fn get_new_blockhash(&self, blockhash: &Hash) -> Result<(Hash, FeeCalculator)> {
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let (last_blockhash, fee_calculator) = self.get_recent_blockhash()?;
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if last_blockhash != *blockhash {
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Ok((last_blockhash, fee_calculator))
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} else {
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Err(TransportError::IoError(io::Error::new(
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io::ErrorKind::Other,
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"Unable to get new blockhash",
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)))
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}
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}
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fn get_epoch_info(&self) -> Result<EpochInfo> {
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Ok(self.bank.get_epoch_info())
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}
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}
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impl BankClient {
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fn run(bank: &Bank, transaction_receiver: Receiver<Transaction>) {
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while let Ok(tx) = transaction_receiver.recv() {
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let mut transactions = vec![tx];
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while let Ok(tx) = transaction_receiver.try_recv() {
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transactions.push(tx);
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}
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let _ = bank.try_process_transactions(transactions.iter());
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}
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}
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pub fn new_shared(bank: &Arc<Bank>) -> Self {
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let (transaction_sender, transaction_receiver) = channel();
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let transaction_sender = Mutex::new(transaction_sender);
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let thread_bank = bank.clone();
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let bank = bank.clone();
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Builder::new()
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.name("solana-bank-client".to_string())
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.spawn(move || Self::run(&thread_bank, transaction_receiver))
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.unwrap();
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Self {
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bank,
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transaction_sender,
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}
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}
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pub fn new(bank: Bank) -> Self {
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Self::new_shared(&Arc::new(bank))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use solana_sdk::{genesis_config::create_genesis_config, instruction::AccountMeta};
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#[test]
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fn test_bank_client_new_with_keypairs() {
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let (genesis_config, john_doe_keypair) = create_genesis_config(10_000);
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let john_pubkey = john_doe_keypair.pubkey();
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let jane_doe_keypair = Keypair::new();
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let jane_pubkey = jane_doe_keypair.pubkey();
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let doe_keypairs = vec![&john_doe_keypair, &jane_doe_keypair];
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let bank = Bank::new_for_tests(&genesis_config);
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let bank_client = BankClient::new(bank);
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// Create 2-2 Multisig Transfer instruction.
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let bob_pubkey = solana_sdk::pubkey::new_rand();
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let mut transfer_instruction = system_instruction::transfer(&john_pubkey, &bob_pubkey, 42);
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transfer_instruction
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.accounts
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.push(AccountMeta::new(jane_pubkey, true));
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let message = Message::new(&[transfer_instruction], Some(&john_pubkey));
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bank_client
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.send_and_confirm_message(&doe_keypairs, message)
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.unwrap();
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assert_eq!(bank_client.get_balance(&bob_pubkey).unwrap(), 42);
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}
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}
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