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dont push empty bundles

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This commit is contained in:
darshanime 2026-07-13 14:09:25 +05:30
parent 3f843303fa
commit 7a2ed3a023
2 changed files with 116 additions and 58 deletions
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91
src/warpbuild/mirror-cache.ts
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@ -248,38 +248,49 @@ async function uploadBranchDelta(settings: IGitSourceSettings): Promise<void> {
const repoPath = settings.repositoryPath
const sha = settings.commit
const grant = await api.requestBranchUpload(plan.repoKey, plan.refKey, sha)
if (grant.kind !== 'grant') {
core.info(`Branch delta upload skipped (${grant.kind})`)
return
}
if (!(await hasBaseRefs(repoPath))) {
core.info('No base refs to diff against; branch delta skipped')
return
}
const tmp = tempBundlePath('branch')
await exec.exec('git', ['-C', repoPath, 'update-ref', UPLOAD_TIP_REF, sha])
try {
await exec.exec('git', ['-C', repoPath, 'update-ref', UPLOAD_TIP_REF, sha])
// Exclude the base with a single --glob, not one `^ref` arg per ref: a large repo
// has hundreds of base refs, and that many args overflows the Windows command-line
// limit (ENAMETOOLONG). The glob matches the multi-level seeded refs and yields the
// same base-relative (order-free) delta.
await exec.exec('git', [
'-C',
repoPath,
'bundle',
'create',
tmp,
UPLOAD_TIP_REF,
'--not',
`--glob=${BASE_REFNS}/*`
])
await httpPut(grant.url, tmp)
core.info(`Uploaded branch delta for '${plan.refKey}'`)
if (!(await hasBaseRefs(repoPath))) {
core.info('No base refs to diff against; branch delta skipped')
return
}
// If the tip is already in the base there is no delta to roll, and `git bundle
// create` errors on an empty range ("Refusing to create empty bundle"). Detect it
// first — and before taking the server lock, so an empty delta never blocks the
// other jobs racing the same branch.
if (await branchDeltaIsEmpty(repoPath)) {
core.info('Tip already contained in the base; no branch delta to upload')
return
}
const grant = await api.requestBranchUpload(plan.repoKey, plan.refKey, sha)
if (grant.kind !== 'grant') {
core.info(`Branch delta upload skipped (${grant.kind})`)
return
}
const tmp = tempBundlePath('branch')
try {
// Exclude the base with a single --glob, not one `^ref` arg per ref: a large repo
// has hundreds of base refs, and that many args overflows the Windows command-line
// limit (ENAMETOOLONG). The glob matches the multi-level seeded refs and yields the
// same base-relative (order-free) delta.
await exec.exec('git', [
'-C',
repoPath,
'bundle',
'create',
tmp,
UPLOAD_TIP_REF,
'--not',
`--glob=${BASE_REFNS}/*`
])
await httpPut(grant.url, tmp)
core.info(`Uploaded branch delta for '${plan.refKey}'`)
} finally {
await fs.promises.rm(tmp, {force: true})
}
} finally {
await fs.promises.rm(tmp, {force: true})
await exec.exec(
'git',
['-C', repoPath, 'update-ref', '-d', UPLOAD_TIP_REF],
@ -290,6 +301,26 @@ async function uploadBranchDelta(settings: IGitSourceSettings): Promise<void> {
}
}
// The tip's delta against the base is empty when the tip is already reachable from the
// base — nothing new to bundle.
async function branchDeltaIsEmpty(repoPath: string): Promise<boolean> {
let out = ''
await exec.exec(
'git',
[
'-C',
repoPath,
'rev-list',
'--count',
UPLOAD_TIP_REF,
'--not',
`--glob=${BASE_REFNS}/*`
],
{silent: true, listeners: {stdout: (d: Buffer) => (out += d.toString())}}
)
return out.trim() === '0'
}
// Whether any base ref was seeded — the guard that keeps the delta base-relative. The
// base is excluded by glob (see uploadBranchDelta), so we only need existence here.
async function hasBaseRefs(repoPath: string): Promise<boolean> {