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Reduce the amount of data copied to the workflow pod (#293)

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* run script copies back only runner file commands

* wip

* fix

* fmt

* user volume mount

* try doing only file commands

* typo

* remove _temp_pre

* Update packages/k8s/src/hooks/run-script-step.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update packages/k8s/src/hooks/run-script-step.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* better escape

* no useless escapes

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Nikola Jokic
2025-12-10 21:49:35 +01:00
committed by GitHub
parent 996cc75daf
commit f8e1cae677
4 changed files with 47 additions and 16 deletions
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48
packages/k8s/src/hooks/run-script-step.ts
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@@ -23,25 +23,51 @@ export async function runScriptStep(
)
const workdir = dirname(process.env.RUNNER_WORKSPACE as string)
const containerTemp = '/__w/_temp'
const runnerTemp = `${workdir}/_temp`
await execCpToPod(state.jobPod, runnerTemp, containerTemp)
const containerTemp = '/__w/_temp'
const containerTempSrc = '/__w/_temp_pre'
// Ensure base and staging dirs exist before copying
await execPodStep(
[
'sh',
'-c',
'mkdir -p /__w && mkdir -p /__w/_temp && mkdir -p /__w/_temp_pre'
],
state.jobPod,
JOB_CONTAINER_NAME
)
await execCpToPod(state.jobPod, runnerTemp, containerTempSrc)
// Copy GitHub directories from temp to /github
const setupCommands = [
'mkdir -p /github',
'cp -r /__w/_temp/_github_home /github/home',
'cp -r /__w/_temp/_github_workflow /github/workflow'
// Merge strategy:
// - Overwrite files in _runner_file_commands
// - Append files not already present elsewhere
const mergeCommands = [
'set -e',
'mkdir -p /__w/_temp /__w/_temp_pre',
'SRC=/__w/_temp_pre',
'DST=/__w/_temp',
// Overwrite _runner_file_commands
`find "$SRC" -type f ! -path "*/_runner_file_commands/*" -exec sh -c '
rel="\${1#$2/}"
target="$3/$rel"
mkdir -p "$(dirname "$target")"
cp -a "$1" "$target"
' _ {} "$SRC" "$DST" \\;`,
// Remove _temp_pre after merging
'rm -rf /__w/_temp_pre'
]
try {
await execPodStep(
['sh', '-c', shlex.quote(setupCommands.join(' && '))],
['sh', '-c', mergeCommands.join(' && ')],
state.jobPod,
JOB_CONTAINER_NAME
)
} catch (err) {
core.debug(`Failed to copy GitHub directories: ${JSON.stringify(err)}`)
core.debug(`Failed to merge temp directories: ${JSON.stringify(err)}`)
const message = (err as any)?.response?.body?.message || err
throw new Error(`failed to merge temp dirs: ${message}`)
}
// Execute the entrypoint script
@@ -69,7 +95,11 @@ export async function runScriptStep(
core.debug(
`Copying from job pod '${state.jobPod}' ${containerTemp} to ${runnerTemp}`
)
await execCpFromPod(state.jobPod, containerTemp, workdir)
await execCpFromPod(
state.jobPod,
`${containerTemp}/_runner_file_commands`,
`${workdir}/_temp`
)
} catch (error) {
core.warning('Failed to copy _temp from pod')
}