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Fix: Prevent function from spamming API after sleep #93

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Fix: Prevent function from spamming API after sleep #93

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39ed99d
Fix: Prevent function from spamming API after sleep
sumanjeet0012 Feb 18, 2025
62107c3
Removed Unnecessary try/catch wrapper
sumanjeet0012 Feb 19, 2025
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20 changes: 13 additions & 7 deletions lib/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -94,15 +94,21 @@ export async function* watch(
options: WatchOptions = defaultWatchOptions,
): AsyncGenerator<RandomnessBeacon> {
const info = await client.chain().info()
let currentRound = roundAt(Date.now(), info)


while (!abortController.signal.aborted) {
const now = Date.now()
await sleep(roundTime(info, currentRound) - now)

const beacon = await retryOnError(async () => client.get(currentRound), options.retriesOnFailure)
yield validatedBeacon(client, beacon, currentRound)
currentRound = currentRound + 1
const targetRound = roundAt(now, info)

const nextRoundTime = roundTime(info, targetRound)
const waitTime = nextRoundTime - now
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will waitTime ever be > 0 here given we're checking the round at now?

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Yes, I think the difference between nextRoundTime (the time of the next round, which will occur in the future) and the current time will be greater than 0.

Is there anything incorrect here?

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assuming 3 second rounds:
If we start at time 0 and it's currently time 1, roundAt(now, info) returns 1 (which started at time 0), therefore we will wait 0 seconds.
On the next iteration, it will still be time 1(ish), and roundAt(now, info) will still return 1, waiting 0 seconds again
I'd have assumed you need to increment the round to get the next round

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indeed it seems the tests are failing for the same reason


await sleep(Math.max(0, waitTime))

const beacon = await retryOnError(
async () => client.get(targetRound),
options.retriesOnFailure
)
yield validatedBeacon(client, beacon, targetRound)
}
}

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