68 lines
2.6 KiB
TypeScript
68 lines
2.6 KiB
TypeScript
/**
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* Generic-task adaptation for background bash process handles.
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*
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* @module @deepseek-ai/dsh-tool-bash/background
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*/
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import type { ShellProcess } from '@deepseek-ai/dsh-shell'
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import type { JobHooks, JobOutcome } from '@deepseek-ai/dsh-jobs'
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/**
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* Map a settled background process onto the generic task-outcome vocabulary:
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* `killed` stays `killed` (detail: the signal when one is known), everything
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* else is `completed` with the exit code as detail. A nonzero command exit is
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* reported, not failed, exactly like the foreground rendering.
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* @param proc - the settled process handle.
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* @returns the outcome for the `ctx.jobs` registration.
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*/
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export function processOutcome(proc: ShellProcess): { status: 'completed' | 'killed'; detail: string } {
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// TODO(background-infrastructure-outcome): widen ShellProcess with an explicit
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// infrastructure-failure outcome, then map it to task `failed`. Restricted
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// runner failures expose sandbox.runnerFailed, but unconfined spawn failures
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// still alias a signal-less kill; real nonzero command exits must remain
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// `completed`.
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if (proc.status === 'killed') {
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return { status: 'killed', detail: proc.signal !== null ? `signal: ${proc.signal}` : 'killed before exit' }
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}
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return { status: 'completed', detail: `exit code: ${proc.exitCode ?? 0}` }
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}
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/**
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* Adapt asynchronous shell preparation after job admission without exposing a partial process.
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* @param start - starts the process with job-owned cancellation.
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* @param renderOutput - consumes output from a published process.
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* @returns synchronous job hooks whose completion includes preparation and process settlement.
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*/
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export function processJob(
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start: (signal: AbortSignal) => Promise<ShellProcess>,
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renderOutput: (process: ShellProcess) => string,
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): JobHooks {
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const controller = new AbortController()
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let process: ShellProcess | undefined
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const done: Promise<JobOutcome> = (async () => {
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try {
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process = await start(controller.signal)
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try {
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if (controller.signal.aborted) process.kill()
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} finally {
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await process.done
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}
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return processOutcome(process)
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} catch (error: unknown) {
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return {
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status: controller.signal.aborted && process === undefined ? 'killed' : 'failed',
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detail: error instanceof Error ? error.message : String(error),
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}
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}
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})()
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return {
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cancel: (reason) => {
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if (controller.signal.aborted) return
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controller.abort(reason)
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process?.kill()
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},
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done,
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readOutput: () => process === undefined ? '' : renderOutput(process),
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}
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}
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