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fix(cardano-chain-follower): set_read_pointer now returns None when the requested point is not found #184

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merged 1 commit into from
Mar 19, 2024
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fix(cardano-chain-follower): set_read_pointer now returns None when the requested point is not found #184

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32 changes: 19 additions & 13 deletions hermes/crates/cardano-chain-follower/src/follow.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -485,19 +485,25 @@ mod task {
continue;
};

let Ok(Some(from)) = set_client_read_pointer(&mut client, at).await else {
drop(response_tx.send(Err(crate::Error::SetReadPointer)));
continue;
};

fetch_chain_updates_fut.set(Self::fetch_chain_updates(
client,
self.mithril_snapshot.as_ref(),
self.chain_update_tx.clone(),
from,
));

drop(response_tx.send(Ok(None)));
match set_client_read_pointer(&mut client, at).await {
Ok(Some(from)) => {
fetch_chain_updates_fut.set(Self::fetch_chain_updates(
client,
self.mithril_snapshot.as_ref(),
self.chain_update_tx.clone(),
from.clone(),
));

drop(response_tx.send(Ok(Some(from))));
}
Ok(None) => {
drop(response_tx.send(Ok(None)));
}
Err(_) => {
drop(response_tx.send(Err(crate::Error::SetReadPointer)));
continue;
}
}
}

() = &mut fetch_chain_updates_fut => {}
Expand Down