absolutebi/serai
1
0
Fork 0
mirror of https://github.com/serai-dex/serai.git synced 2025-12-10 05:09:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

Move TendermintMachine from start_num, time to last_num, time

Browse Source 
Provides an explicitly clear API clearer to program around.

Also adds additional time code to handle an edge case.
This commit is contained in:
Luke Parker
2022-10-30 04:27:15 -04:00
parent edb2e00db7
commit 1af6117155
2 changed files with 35 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
substrate/tendermint/machine/src/lib.rs
View File

@@ -242,24 +242,32 @@ impl<N: Network + 'static> TendermintMachine<N> {
pub fn new(
network: N,
proposer: N::ValidatorId,
start: (BlockNumber, u64),
last: (BlockNumber, u64),
proposal: N::Block,
) -> TendermintHandle<N> {
// Convert the start time to an instant
// This is imprecise yet should be precise enough
let start_time = {
let instant_now = Instant::now();
let sys_now = SystemTime::now();
instant_now -
sys_now
.duration_since(UNIX_EPOCH + Duration::from_secs(start.1))
.unwrap_or(Duration::ZERO)
};
let (msg_send, mut msg_recv) = mpsc::channel(100); // Backlog to accept. Currently arbitrary
TendermintHandle {
messages: msg_send,
handle: tokio::spawn(async move {
let last_end = UNIX_EPOCH + Duration::from_secs(last.1);
// If the last block hasn't ended yet, sleep until it has
{
let now = SystemTime::now();
if last_end > now {
sleep(last_end.duration_since(now).unwrap_or(Duration::ZERO)).await;
}
}
// Convert the last time to an instant
// This is imprecise yet should be precise enough, given this library only has
// second accuracy
let last_time = {
let instant_now = Instant::now();
let sys_now = SystemTime::now();
instant_now - sys_now.duration_since(last_end).unwrap_or(Duration::ZERO)
};
let signer = network.signature_scheme();
let weights = network.weights();
let network = Arc::new(RwLock::new(network));
@@ -270,9 +278,16 @@ impl<N: Network + 'static> TendermintMachine<N> {
weights: weights.clone(),
proposer,
number: start.0,
canonical_start_time: start.1,
start_time,
number: BlockNumber(last.0.0 + 1),
canonical_start_time: last.1,
// The end time of the last block is the start time for this one
// The Commit explicitly contains the end time, so loading the last commit will provide
// this. The only exception is for the genesis block, which doesn't have a commit
// Using the genesis time in place will cause this block to be created immediately after
// it, without the standard amount of separation (so their times will be equivalent or
// minimally offset)
// For callers wishing to avoid this, they should pass (0, GENESIS + BLOCK_TIME)
start_time: last_time,
personal_proposal: proposal,
queue: vec![],