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src: move buildkit prune to cleanup stage and invoke it inline

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Previously, we were firing off an async buildkit prune to clean
up layers unused in 14 days. This changes that to cleanup layers
unused in 7 days and fires it off inline on cleanup. It just seems
easier to reason about that way.
This commit is contained in:
Claude 2025-04-22 16:21:08 -04:00
commit c80185915d
4 changed files with 29 additions and 16 deletions
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11
src/setup_builder.ts
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@ -300,16 +300,11 @@ export async function startAndConfigureBuildkitd(parallelism: number, setupOnly:
throw error;
}
// Start cache pruning in the background without blocking.
pruneBuildkitCache().catch(error => {
core.warning(`Background cache pruning failed: ${error.message}`);
});
return addr;
}
/**
* Prunes buildkit cache data older than 14 days.
* Prunes buildkit cache data older than 7 days.
* We don't specify any keep bytes here since we are
* handling the ceph volume size limits ourselves in
* the VM Agent.
@ -317,8 +312,8 @@ export async function startAndConfigureBuildkitd(parallelism: number, setupOnly:
*/
export async function pruneBuildkitCache(): Promise<void> {
try {
const fourteenDaysInHours = 14 * 24;
await execAsync(`sudo buildctl --addr ${BUILDKIT_DAEMON_ADDR} prune --keep-duration ${fourteenDaysInHours}h --all`);
const sevenDaysInHours = 7 * 24;
await execAsync(`sudo buildctl --addr ${BUILDKIT_DAEMON_ADDR} prune --keep-duration ${sevenDaysInHours}h --all`);
core.debug('Successfully pruned buildkit cache');
} catch (error) {
core.warning(`Error pruning buildkit cache: ${error.message}`);