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use {
crossbeam_channel::{Receiver, RecvTimeoutError},
itertools::izip,
solana_ledger::{
blockstore::Blockstore,
blockstore_processor::{TransactionStatusBatch, TransactionStatusMessage},
},
solana_runtime::bank::{
Bank, InnerInstructionsList, NonceRollbackInfo, TransactionLogMessages,
},
solana_transaction_status::{InnerInstructions, Reward, TransactionStatusMeta},
std::{
sync::{
atomic::{AtomicBool, AtomicU64, Ordering},
Arc,
},
thread::{self, Builder, JoinHandle},
time::Duration,
},
};
pub struct TransactionStatusService {
thread_hdl: JoinHandle<()>,
}
impl TransactionStatusService {
#[allow(clippy::new_ret_no_self)]
pub fn new(
write_transaction_status_receiver: Receiver<TransactionStatusMessage>,
max_complete_transaction_status_slot: Arc<AtomicU64>,
blockstore: Arc<Blockstore>,
exit: &Arc<AtomicBool>,
) -> Self {
let exit = exit.clone();
let thread_hdl = Builder::new()
.name("solana-transaction-status-writer".to_string())
.spawn(move || loop {
if exit.load(Ordering::Relaxed) {
break;
}
if let Err(RecvTimeoutError::Disconnected) = Self::write_transaction_status_batch(
&write_transaction_status_receiver,
&max_complete_transaction_status_slot,
&blockstore,
) {
break;
}
})
.unwrap();
Self { thread_hdl }
}
fn write_transaction_status_batch(
write_transaction_status_receiver: &Receiver<TransactionStatusMessage>,
max_complete_transaction_status_slot: &Arc<AtomicU64>,
blockstore: &Arc<Blockstore>,
) -> Result<(), RecvTimeoutError> {
match write_transaction_status_receiver.recv_timeout(Duration::from_secs(1))? {
TransactionStatusMessage::Batch(TransactionStatusBatch {
bank,
transactions,
statuses,
balances,
token_balances,
inner_instructions,
transaction_logs,
rent_debits,
}) => {
let slot = bank.slot();
let inner_instructions_iter: Box<
dyn Iterator<Item = Option<InnerInstructionsList>>,
> = if let Some(inner_instructions) = inner_instructions {
Box::new(inner_instructions.into_iter())
} else {
Box::new(std::iter::repeat_with(|| None))
};
let transaction_logs_iter: Box<
dyn Iterator<Item = Option<TransactionLogMessages>>,
> = if let Some(transaction_logs) = transaction_logs {
Box::new(transaction_logs.into_iter())
} else {
Box::new(std::iter::repeat_with(|| None))
};
for (
transaction,
(status, nonce_rollback),
pre_balances,
post_balances,
pre_token_balances,
post_token_balances,
inner_instructions,
log_messages,
rent_debits,
) in izip!(
&transactions,
statuses,
balances.pre_balances,
balances.post_balances,
token_balances.pre_token_balances,
token_balances.post_token_balances,
inner_instructions_iter,
transaction_logs_iter,
rent_debits.into_iter(),
) {
if Bank::can_commit(&status) && !transaction.signatures.is_empty() {
let fee_calculator = nonce_rollback
.map(|nonce_rollback| nonce_rollback.fee_calculator())
.unwrap_or_else(|| {
bank.get_fee_calculator(&transaction.message().recent_blockhash)
})
.expect("FeeCalculator must exist");
let fee = fee_calculator.calculate_fee(transaction.message());
let (writable_keys, readonly_keys) =
transaction.message.get_account_keys_by_lock_type();
let inner_instructions = inner_instructions.map(|inner_instructions| {
inner_instructions
.into_iter()
.enumerate()
.map(|(index, instructions)| InnerInstructions {
index: index as u8,
instructions,
})
.filter(|i| !i.instructions.is_empty())
.collect()
});
let pre_token_balances = Some(pre_token_balances);
let post_token_balances = Some(post_token_balances);
let rewards = Some(
rent_debits
.0
.into_iter()
.map(|(pubkey, reward_info)| Reward {
pubkey: pubkey.to_string(),
lamports: reward_info.lamports,
post_balance: reward_info.post_balance,
reward_type: Some(reward_info.reward_type),
commission: reward_info.commission,
})
.collect(),
);
blockstore
.write_transaction_status(
slot,
transaction.signatures[0],
writable_keys,
readonly_keys,
TransactionStatusMeta {
status,
fee,
pre_balances,
post_balances,
inner_instructions,
log_messages,
pre_token_balances,
post_token_balances,
rewards,
},
)
.expect("Expect database write to succeed");
}
}
}
TransactionStatusMessage::Freeze(slot) => {
max_complete_transaction_status_slot.fetch_max(slot, Ordering::SeqCst);
}
}
Ok(())
}
pub fn join(self) -> thread::Result<()> {
self.thread_hdl.join()
}
}