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Copy pathstopTask.ts
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100 lines (88 loc) · 2.83 KB
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// Shared logic for stopping a running task.
// Used by TaskStopTool (LLM-invoked) and SDK stop_task control request.
import type { AppState } from '../state/AppState.js'
import type { TaskStateBase } from '../Task.js'
import { getTaskByType } from '../tasks.js'
import { emitTaskTerminatedSdk } from '../utils/sdkEventQueue.js'
import { isLocalShellTask } from './LocalShellTask/guards.js'
export class StopTaskError extends Error {
constructor(
message: string,
public readonly code: 'not_found' | 'not_running' | 'unsupported_type',
) {
super(message)
this.name = 'StopTaskError'
}
}
type StopTaskContext = {
getAppState: () => AppState
setAppState: (f: (prev: AppState) => AppState) => void
}
type StopTaskResult = {
taskId: string
taskType: string
command: string | undefined
}
/**
* Look up a task by ID, validate it is running, kill it, and mark it as notified.
*
* Throws {@link StopTaskError} when the task cannot be stopped (not found,
* not running, or unsupported type). Callers can inspect `error.code` to
* distinguish the failure reason.
*/
export async function stopTask(
taskId: string,
context: StopTaskContext,
): Promise<StopTaskResult> {
const { getAppState, setAppState } = context
const appState = getAppState()
const task = appState.tasks?.[taskId] as TaskStateBase | undefined
if (!task) {
throw new StopTaskError(`No task found with ID: ${taskId}`, 'not_found')
}
if (task.status !== 'running') {
throw new StopTaskError(
`Task ${taskId} is not running (status: ${task.status})`,
'not_running',
)
}
const taskImpl = getTaskByType(task.type)
if (!taskImpl) {
throw new StopTaskError(
`Unsupported task type: ${task.type}`,
'unsupported_type',
)
}
await taskImpl.kill(taskId, setAppState)
// Bash: suppress the "exit code 137" notification (noise). Agent tasks: don't
// suppress — the AbortError catch sends a notification carrying
// extractPartialResult(agentMessages), which is the payload not noise.
if (isLocalShellTask(task)) {
let suppressed = false
setAppState(prev => {
const prevTask = prev.tasks[taskId]
if (!prevTask || prevTask.notified) {
return prev
}
suppressed = true
return {
...prev,
tasks: {
...prev.tasks,
[taskId]: { ...prevTask, notified: true },
},
}
})
// Suppressing the XML notification also suppresses print.ts's parsed
// task_notification SDK event — emit it directly so SDK consumers see
// the task close.
if (suppressed) {
emitTaskTerminatedSdk(taskId, 'stopped', {
toolUseId: task.toolUseId,
summary: task.description,
})
}
}
const command = isLocalShellTask(task) ? task.command : task.description
return { taskId, taskType: task.type, command }
}