solana/src/replicate_stage.rs

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//! The `replicate_stage` replicates transactions broadcast by the leader.
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use bank::Bank;
use counter::Counter;
use crdt::Crdt;
use entry::EntryReceiver;
use ledger::{Block, LedgerWriter};
use log::Level;
use packet::BlobRecycler;
use result::{Error, Result};
use service::Service;
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use signature::Keypair;
use std::net::UdpSocket;
use std::sync::atomic::AtomicUsize;
use std::sync::mpsc::channel;
use std::sync::mpsc::RecvTimeoutError;
use std::sync::{Arc, RwLock};
use std::thread::{self, Builder, JoinHandle};
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use std::time::Duration;
use streamer::{responder, BlobSender};
use vote_stage::send_validator_vote;
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pub struct ReplicateStage {
thread_hdls: Vec<JoinHandle<()>>,
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}
impl ReplicateStage {
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/// Process entry blobs, already in order
fn replicate_requests(
bank: &Arc<Bank>,
crdt: &Arc<RwLock<Crdt>>,
blob_recycler: &BlobRecycler,
window_receiver: &EntryReceiver,
ledger_writer: Option<&mut LedgerWriter>,
keypair: &Arc<Keypair>,
vote_blob_sender: &BlobSender,
) -> Result<()> {
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let timer = Duration::new(1, 0);
//coalesce all the available entries into a single vote
let mut entries = window_receiver.recv_timeout(timer)?;
while let Ok(mut more) = window_receiver.try_recv() {
entries.append(&mut more);
}
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let res = bank.process_entries(&entries);
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send_validator_vote(bank, keypair, crdt, blob_recycler, vote_blob_sender)?;
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{
let mut wcrdt = crdt.write().unwrap();
wcrdt.insert_votes(&entries.votes());
}
inc_new_counter_info!(
"replicate-transactions",
entries.iter().map(|x| x.transactions.len()).sum()
);
// TODO: move this to another stage?
if let Some(ledger_writer) = ledger_writer {
ledger_writer.write_entries(entries)?;
}
res?;
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Ok(())
}
pub fn new(
keypair: Arc<Keypair>,
bank: Arc<Bank>,
crdt: Arc<RwLock<Crdt>>,
window_receiver: EntryReceiver,
ledger_path: Option<&str>,
) -> Self {
let (vote_blob_sender, vote_blob_receiver) = channel();
let send = UdpSocket::bind("0.0.0.0:0").expect("bind");
let t_responder = responder("replicate_stage", Arc::new(send), vote_blob_receiver);
let mut ledger_writer = ledger_path.map(|p| LedgerWriter::open(p, false).unwrap());
let keypair = Arc::new(keypair);
let blob_recycler = BlobRecycler::default();
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let t_replicate = Builder::new()
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.name("solana-replicate-stage".to_string())
.spawn(move || loop {
if let Err(e) = Self::replicate_requests(
&bank,
&crdt,
&blob_recycler,
&window_receiver,
ledger_writer.as_mut(),
&keypair,
&vote_blob_sender,
) {
match e {
Error::RecvTimeoutError(RecvTimeoutError::Disconnected) => break,
Error::RecvTimeoutError(RecvTimeoutError::Timeout) => (),
_ => error!("{:?}", e),
}
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}
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}).unwrap();
let thread_hdls = vec![t_responder, t_replicate];
ReplicateStage { thread_hdls }
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}
}
impl Service for ReplicateStage {
type JoinReturnType = ();
fn join(self) -> thread::Result<()> {
for thread_hdl in self.thread_hdls {
thread_hdl.join()?;
}
Ok(())
}
}