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subtleSubmitReview.js: fix a race condition #217

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Nov 29, 2024
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6 changes: 4 additions & 2 deletions src/subtleSubmitReview.js
Original file line number Diff line number Diff line change
Expand Up @@ -49,10 +49,10 @@ export default async function subtleSubmitReview ({
name: repo,
prnumber: prnum
}
const msg = (await github.graphql(query, variables)).repository.pullRequest
const msgPre = (await github.graphql(query, variables)).repository.pullRequest

// debounce if the PR description contains a watermark and the debounce time is not expired yet
if (msg.body.includes(watermark) && !isOlderThanXHours(msg.updatedAt, debounceTime)) {
if (msgPre.body.includes(watermark) && !isOlderThanXHours(msgPre.updatedAt, debounceTime)) {
throw new Error('debounce')
}

Expand All @@ -65,6 +65,8 @@ export default async function subtleSubmitReview ({

const newExplaination = '<details><summary>AI Review</summary>' + '\n\n' + watermark + '\n\n' + await explainPatch() + '</details>'

// fetch the message twice, to decrease the chances of race condition, but still debounce
const msg = (await github.graphql(query, variables)).repository.pullRequest
const newBody = msg.body.match(re)
? msg.body.replace(re, newExplaination)
: msg.body + '\n\n' + newExplaination
Expand Down