refactor(tasks): split the task registry into seam and local implementation

The tasks/ family now matches the capability-seam shape: @deepseek-ai/dsh-tasks
keeps the abstract TaskService (ctx.tasks contract, vocabulary types, snapshot
invariant companion) and the new @deepseek-ai/dsh-tasks-local carries the
process-local registry (LocalTaskService: in-memory store, settlement,
owner-cleanup effects, teardown, TASK_WAIT_TIMEOUT). Compositions and test
harnesses now load dsh-tasks-local; producers, TaskKindMap merges, and
dsh-tool-tasks keep importing the seam only.

Producer misconfiguration diagnostics name dsh-tasks-local because loading the
implementation is the fix. The registry behavior suite moves to tasks-local;
the seam keeps a stub-subclass registration test and the probe-based invariant
suite.
This commit is contained in:
Tianyi Cui
2026-07-26 05:13:39 +08:00
parent b5bba5adee
commit 698b391bd6
49 changed files with 851 additions and 458 deletions

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import { describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import type { Agent } from '@deepseek-ai/dsh-agent'
import { TaskId, TaskService } from '@deepseek-ai/dsh-tasks'
import type { TaskDoneListener, TaskRead, TaskSnapshot, TaskStart } from '@deepseek-ai/dsh-tasks'
/**
* Minimal concrete registry: one canned record. The seam owns the contract
* only (ids, snapshots, authorization-shaped signatures); the registry
* behavior suite lives with `@deepseek-ai/dsh-tasks-local`.
*/
class StubTaskService extends TaskService {
snapshotOf(id: TaskId): TaskSnapshot {
return {
id,
kind: 'bash',
label: 'sleep 60',
status: 'running',
startedAt: 0,
reported: false,
}
}
start(spec: TaskStart): TaskId {
spec.run()
return TaskId(`${spec.kind}-1`)
}
list(): TaskSnapshot[] {
return [this.snapshotOf(TaskId('bash-1'))]
}
get(id: TaskId): TaskSnapshot {
return this.snapshotOf(id)
}
read(id: TaskId): TaskRead {
return { text: '', snapshot: this.snapshotOf(id) }
}
kill(): 'requested' | 'already-finished' {
return 'requested'
}
wait(id: TaskId, _timeoutMs: number, _caller?: Agent, _signal?: AbortSignal): Promise<TaskSnapshot> {
return Promise.resolve(this.snapshotOf(id))
}
onTaskDone(_listener: TaskDoneListener): () => void {
return () => {}
}
attachSurface(_name: string): () => void {
return () => {}
}
}
describe('TaskService seam', () => {
it('a concrete subclass registers as ctx.tasks and serves the abstract API', async () => {
const ctx = new Context()
await ctx.plugin(StubTaskService)
const detachSurface = ctx.tasks.attachSurface('seam-test')
const id = ctx.tasks.start({ kind: 'bash', label: 'sleep 60', run: () => ({ cancel() {}, done: new Promise(() => {}) }) })
expect(id).toBe('bash-1')
expect(ctx.tasks.list()).toHaveLength(1)
expect(ctx.tasks.get(id).status).toBe('running')
expect(ctx.tasks.read(id).text).toBe('')
expect(ctx.tasks.kill(id)).toBe('requested')
await expect(ctx.tasks.wait(id, 5)).resolves.toMatchObject({ id })
const detachListener = ctx.tasks.onTaskDone(() => {})
detachListener()
detachSurface()
})
it('loading a second implementation throws (one tasks service per context — cordis standard)', async () => {
const ctx = new Context()
await ctx.plugin(StubTaskService)
class SecondTaskService extends StubTaskService {}
await expect(ctx.plugin(SecondTaskService)).rejects.toThrow(/service "tasks" has been registered/)
})
})

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import { describe, expect, expectTypeOf, it, vi } from 'vitest'
import { Context } from 'cordis'
import { Session, SessionId } from '@deepseek-ai/dsh-session'
import AgentRegistry, { AgentMessageId } from '@deepseek-ai/dsh-agent'
import type { Agent } from '@deepseek-ai/dsh-agent'
import TaskService, { TaskId } from '@deepseek-ai/dsh-tasks'
import type { TaskHooks, TaskKind, TaskOutcome, TaskSnapshot, TaskStart } from '@deepseek-ai/dsh-tasks'
declare module '@deepseek-ai/dsh-tasks' {
interface TaskKindMap {
workflow: 'workflow'
}
}
const agentScopeDisposers = new WeakMap<Agent, () => Promise<void>>()
function stubAgent(ctx: Context, rawId: string): Agent {
const id = SessionId(rawId)
const scopeFiber = ctx.plugin(() => {})
const agent = {
id,
options: {},
session: new Session(id),
status: 'idle' as const,
ctx: scopeFiber.ctx,
followup: () => AgentMessageId('stub'),
queue: () => AgentMessageId('stub'),
steer: () => AgentMessageId('stub'),
inject: () => AgentMessageId('stub'),
send: () => AgentMessageId('stub'),
cancel() {},
whenIdle() { return Promise.resolve() },
}
agentScopeDisposers.set(agent, async () => { await scopeFiber.dispose() })
return agent
}
async function disposeAgentScope(agent: Agent): Promise<void> {
const dispose = agentScopeDisposers.get(agent)
if (dispose === undefined) throw new Error(`missing test scope for agent "${agent.id}"`)
await dispose()
}
/** A controllable producer start-spec: settle its `done` on demand, record cancels. */
function producer(overrides: Partial<Omit<TaskStart, 'run'> & TaskHooks> = {}) {
let settle!: (outcome: TaskOutcome) => void
let reject!: (error: unknown) => void
const cancels: (string | undefined)[] = []
const { kind = 'bash', label = 'sleep 60', owner, outputLimitBytes, ...hookOverrides } = overrides
const hooks: TaskHooks = {
cancel(reason) { cancels.push(reason) },
done: new Promise<TaskOutcome>((res, rej) => { settle = res; reject = rej }),
...hookOverrides,
}
const spec: TaskStart = {
kind,
label,
...owner !== undefined ? { owner } : {},
...outputLimitBytes !== undefined ? { outputLimitBytes } : {},
run: () => hooks,
}
return { spec, settle, reject, cancels }
}
async function harness() {
const ctx = new Context()
await ctx.plugin(AgentRegistry)
await ctx.plugin(TaskService)
ctx.tasks.attachSurface('test-surface')
return ctx
}
/** Let the settlement continuation (a `done.then`) run. */
const tick = () => new Promise<void>(r => setTimeout(r, 0))
/** Inspect the internal resolver registry to pin bounded retention while a task stays live. */
function waitResolverCount(ctx: Context, id: TaskId): number {
const service = ctx.tasks as unknown as { store: Map<TaskId, { waitResolvers: Set<() => void> }> }
const task = service.store.get(id)
if (task === undefined) throw new Error(`missing test task ${id}`)
return task.waitResolvers.size
}
describe('TaskService.start', () => {
it('preserves the SessionId brand on public owner snapshots', () => {
expectTypeOf<TaskSnapshot['ownerSession']>().toEqualTypeOf<SessionId | undefined>()
})
it('refuses to register while no control surface is attached', async () => {
const ctx = new Context()
await ctx.plugin(TaskService)
expect(() => ctx.tasks.start(producer().spec))
.toThrow('background tasks unavailable: no control surface is attached (load @deepseek-ai/dsh-tool-tasks)')
})
it('rejects an empty kind, empty label, and invalid output limit', async () => {
const ctx = await harness()
expect(() => ctx.tasks.start(producer({ kind: '' as TaskKind }).spec)).toThrow('invalid task kind')
expect(() => ctx.tasks.start(producer({ label: '' }).spec)).toThrow('invalid task label')
expect(() => ctx.tasks.start(producer({ outputLimitBytes: 0 }).spec)).toThrow('outputLimitBytes')
})
it('issues kind-prefixed ids from per-kind counters', async () => {
const ctx = await harness()
expect(ctx.tasks.start(producer().spec)).toBe('bash-1')
expect(ctx.tasks.start(producer().spec)).toBe('bash-2')
expect(ctx.tasks.start(producer({ kind: 'subagent' }).spec)).toBe('subagent-1')
expect(ctx.tasks.start(producer({ kind: 'workflow' }).spec)).toBe('workflow-1')
})
})
describe('TaskService reads and settlement', () => {
it('stream kinds read a consuming delta; terminal reads mark reported', async () => {
const ctx = await harness()
const chunks = ['first', '', 'rest']
const p = producer({ readOutput: () => chunks.shift() ?? '' })
const id = ctx.tasks.start(p.spec)
expect(ctx.tasks.read(id)).toMatchObject({ text: 'first', snapshot: { status: 'running', reported: false } })
expect(ctx.tasks.read(id).text).toBe('')
p.settle({ status: 'completed', detail: 'exit code: 0' })
await tick()
const read = ctx.tasks.read(id)
expect(read.text).toBe('rest')
expect(read.snapshot).toMatchObject({ status: 'completed', detail: 'exit code: 0', reported: true })
expect(read.snapshot.finishedAt).toBeTypeOf('number')
})
it('projects a producer-owned model output limit into reads and snapshots', async () => {
const ctx = await harness()
const p = producer({ outputLimitBytes: 64, readOutput: () => 'delta' })
const id = ctx.tasks.start(p.spec)
expect(ctx.tasks.read(id)).toMatchObject({
text: 'delta', snapshot: { outputLimitBytes: 64 },
})
expect(ctx.tasks.get(id)).toMatchObject({ outputLimitBytes: 64 })
})
it('final-output kinds read empty while live, the outcome output idempotently once settled', async () => {
const ctx = await harness()
const p = producer({ kind: 'subagent', label: 'research task' })
const id = ctx.tasks.start(p.spec)
expect(ctx.tasks.read(id)).toMatchObject({ text: '', snapshot: { status: 'running' } })
p.settle({ status: 'completed', output: 'final answer' })
await tick()
expect(ctx.tasks.read(id).text).toBe('final answer')
expect(ctx.tasks.read(id).text).toBe('final answer') // idempotent, not consumed
})
it('a settled task without output reads as empty text', async () => {
const ctx = await harness()
const p = producer({ kind: 'subagent' })
const id = ctx.tasks.start(p.spec)
p.settle({ status: 'failed', detail: 'max-tokens' })
await tick()
expect(ctx.tasks.read(id)).toMatchObject({ text: '', snapshot: { status: 'failed', detail: 'max-tokens' } })
})
it('throws for unknown task ids', async () => {
const ctx = await harness()
expect(() => ctx.tasks.read(TaskId('bash-99'))).toThrow('unknown task bash-99')
})
it('notifies onTaskDone once per task with containment across listeners', async () => {
const ctx = await harness()
const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(() => { throw new Error('listener boom') })
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
const p = producer()
const id = ctx.tasks.start(p.spec)
p.settle({ status: 'completed', detail: 'exit code: 0' })
await tick()
expect(seen).toHaveLength(1)
expect(seen[0]).toMatchObject({ id, status: 'completed', reported: false })
expect(warn).toHaveBeenCalledWith(expect.stringContaining('listener boom'))
})
it('contains a rejecting onTaskDone listener without starving later listeners', async () => {
const ctx = await harness()
const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
const seen: TaskId[] = []
ctx.tasks.onTaskDone(async () => { throw new Error('async listener boom') })
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot.id))
const p = producer()
const id = ctx.tasks.start(p.spec)
p.settle({ status: 'completed' })
await tick()
expect(seen).toEqual([id])
expect(warn).toHaveBeenCalledWith(expect.stringContaining('onTaskDone listener rejected'))
expect(warn).toHaveBeenCalledWith(expect.stringContaining('async listener boom'))
})
it('contains a rejecting done as a failed outcome (producer contract violation)', async () => {
const ctx = await harness()
const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
const p = producer()
const id = ctx.tasks.start(p.spec)
p.reject(new Error('transport exploded'))
await tick()
expect(ctx.tasks.read(id).snapshot).toMatchObject({ status: 'failed', detail: 'Error: transport exploded' })
expect(warn).toHaveBeenCalledWith(expect.stringContaining('producer contract violation'))
})
it('unregisters onTaskDone listeners with the contributing fiber (HMR safety)', async () => {
const ctx = await harness()
const seen: string[] = []
const fiber = await ctx.plugin(Object.assign((inner: Context) => {
inner.tasks.onTaskDone(snapshot => void seen.push(snapshot.id))
}, { inject: ['tasks'] }))
await fiber.dispose()
// The returned disposer detaches too (the non-fiber path).
const detach = ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot.id))
detach()
const p = producer()
ctx.tasks.start(p.spec)
p.settle({ status: 'completed' })
await tick()
expect(seen).toEqual([])
})
})
describe('TaskService.kill', () => {
it('cancels a live task with the forwarded reason and suppresses the notice', async () => {
const ctx = await harness()
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
const p = producer()
const id = ctx.tasks.start(p.spec)
expect(ctx.tasks.kill(id, undefined, 'no longer needed')).toBe('requested')
expect(p.cancels).toEqual(['no longer needed'])
expect(ctx.tasks.list()[0]).toMatchObject({ status: 'stopping', reported: true })
p.settle({ status: 'killed' })
await tick()
// The listener still fires (telemetry may care), but carries reported: true
// so the notice surface suppresses its redundant "finished".
expect(seen[0]).toMatchObject({ id, status: 'killed', reported: true })
})
it('reports an already-finished task instead of failing', async () => {
const ctx = await harness()
const p = producer()
const id = ctx.tasks.start(p.spec)
p.settle({ status: 'completed' })
await tick()
expect(ctx.tasks.kill(id)).toBe('already-finished')
})
it('propagates a throwing producer cancel and leaves the task untouched', async () => {
const ctx = await harness()
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
let broken = true
let settle!: (outcome: TaskOutcome) => void
const id = ctx.tasks.start({
kind: 'bash',
label: 'flaky cancel',
run: () => ({
cancel() { if (broken) throw new Error('cancel boom') },
done: new Promise<TaskOutcome>((res) => { settle = res }),
}),
})
expect(() => ctx.tasks.kill(id)).toThrow('cancel boom')
// The failed kill mutated NOTHING: still running, notice not suppressed,
// and a later (successful) kill still works.
expect(ctx.tasks.get(id)).toMatchObject({ status: 'running', reported: false })
settle({ status: 'completed' })
await tick()
expect(seen[0]).toMatchObject({ id, reported: false }) // notice would still fire
broken = false
expect(ctx.tasks.kill(id)).toBe('already-finished')
})
})
describe('TaskService.wait', () => {
it('resolves with the terminal snapshot when the task settles, marked reported', async () => {
const ctx = await harness()
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
const p = producer()
const id = ctx.tasks.start(p.spec)
const wait = ctx.tasks.wait(id, 5_000)
p.settle({ status: 'completed', detail: 'exit code: 0' })
expect(await wait).toMatchObject({ status: 'completed', reported: true })
// A waiting reader claims delivery before completion listeners inspect the snapshot.
expect(seen[0]).toMatchObject({ id, reported: true })
})
it('returns the live snapshot on timeout without marking reported', async () => {
const ctx = await harness()
const id = ctx.tasks.start(producer().spec)
expect(await ctx.tasks.wait(id, 5)).toMatchObject({ status: 'running', reported: false })
})
it('unregisters timed-out and aborted wait resolvers while the task remains live', async () => {
const ctx = await harness()
const id = ctx.tasks.start(producer().spec)
for (let index = 0; index < 3; index += 1) {
const wait = ctx.tasks.wait(id, 5)
expect(waitResolverCount(ctx, id)).toBe(1)
await expect(wait).resolves.toMatchObject({ status: 'running' })
expect(waitResolverCount(ctx, id)).toBe(0)
}
const controller = new AbortController()
const wait = ctx.tasks.wait(id, 5_000, undefined, controller.signal)
expect(waitResolverCount(ctx, id)).toBe(1)
controller.abort()
await expect(wait).rejects.toThrow('wait aborted')
expect(waitResolverCount(ctx, id)).toBe(0)
expect(ctx.tasks.get(id).status).toBe('running')
})
it('returns immediately for an already-finished task', async () => {
const ctx = await harness()
const p = producer()
const id = ctx.tasks.start(p.spec)
p.settle({ status: 'completed' })
await tick()
expect(await ctx.tasks.wait(id, 5_000)).toMatchObject({ status: 'completed', reported: true })
})
it('rejects a non-positive or non-finite timeout', async () => {
const ctx = await harness()
const id = ctx.tasks.start(producer().spec)
await expect(ctx.tasks.wait(id, 0)).rejects.toThrow('invalid wait timeout')
await expect(ctx.tasks.wait(id, Number.NaN)).rejects.toThrow('invalid wait timeout')
})
it('an aborted signal rejects the wait only — the task stays alive', async () => {
const ctx = await harness()
const id = ctx.tasks.start(producer().spec)
const controller = new AbortController()
const wait = ctx.tasks.wait(id, 5_000, undefined, controller.signal)
controller.abort()
await expect(wait).rejects.toThrow('wait aborted')
expect(ctx.tasks.list()[0]).toMatchObject({ status: 'running' })
const preAborted = new AbortController()
preAborted.abort()
await expect(ctx.tasks.wait(id, 5_000, undefined, preAborted.signal)).rejects.toThrow('wait aborted')
})
it('an abort racing settlement in the same tick does not swallow the notice', async () => {
const ctx = await harness()
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
const p = producer()
const id = ctx.tasks.start(p.spec)
const controller = new AbortController()
const wait = ctx.tasks.wait(id, 5_000, undefined, controller.signal)
// Settlement is queued first, so abort must remove the waiter synchronously;
// otherwise settlement suppresses the notice for a reader that receives nothing.
p.settle({ status: 'completed', detail: 'exit code: 0' })
controller.abort()
await expect(wait).rejects.toThrow('wait aborted')
expect(seen).toHaveLength(1)
expect(seen[0]).toMatchObject({ id, status: 'completed', reported: false })
})
it('an abort landing after settlement still delivers the terminal snapshot it owes', async () => {
const ctx = await harness()
const controller = new AbortController()
const seen: TaskSnapshot[] = []
// The listener aborts after settlement has assigned delivery to this waiter
// but before its resolve microtask; the waiter must still receive the result.
ctx.tasks.onTaskDone((snapshot) => {
seen.push(snapshot)
controller.abort()
})
const p = producer()
const id = ctx.tasks.start(p.spec)
const wait = ctx.tasks.wait(id, 5_000, undefined, controller.signal)
p.settle({ status: 'completed', detail: 'exit code: 0' })
await expect(wait).resolves.toMatchObject({ status: 'completed', reported: true })
expect(seen[0]).toMatchObject({ id, reported: true }) // suppression stays honest: the wait delivered
})
})
describe('TaskService owner isolation', () => {
it('fences read/kill/wait to the owning session and keeps unowned tasks open', async () => {
const ctx = await harness()
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
const other = stubAgent(ctx, 'other')
const owned = ctx.tasks.start(producer({ owner }).spec)
const open = ctx.tasks.start(producer().spec)
// The owner and the unowned task are reachable.
expect(ctx.tasks.read(owned, owner).snapshot.id).toBe(owned)
expect(ctx.tasks.read(open, other).snapshot.id).toBe(open)
// A different session and a no-agent caller are rejected.
expect(() => ctx.tasks.read(owned, other)).toThrow(`task ${owned} belongs to another session`)
expect(() => ctx.tasks.kill(owned, other)).toThrow('belongs to another session')
await expect(ctx.tasks.wait(owned, 10, other)).rejects.toThrow('belongs to another session')
expect(() => ctx.tasks.read(owned)).toThrow('belongs to another session')
})
it('list() shows only caller-owned plus unowned tasks', async () => {
const ctx = await harness()
const alice = stubAgent(ctx, 'alice')
const bob = stubAgent(ctx, 'bob')
ctx.agents.register(alice)
ctx.agents.register(bob)
const aliceTask = ctx.tasks.start(producer({ owner: alice }).spec)
const bobTask = ctx.tasks.start(producer({ owner: bob }).spec)
const openTask = ctx.tasks.start(producer({ kind: 'subagent' }).spec)
expect(ctx.tasks.list(alice).map(t => t.id)).toEqual([aliceTask, openTask])
expect(ctx.tasks.list(bob).map(t => t.id)).toEqual([bobTask, openTask])
expect(ctx.tasks.list().map(t => t.id)).toEqual([openTask])
})
it('rejects an owned registration when no agent registry is mounted', async () => {
const ctx = new Context()
await ctx.plugin(TaskService)
ctx.tasks.attachSurface('test-surface')
expect(() => ctx.tasks.start(producer({ owner: stubAgent(ctx, 'a') }).spec))
.toThrow('background task ownership requires the agent registry')
// The failed registration mutated nothing: no stored task, counter untouched.
expect(ctx.tasks.list()).toEqual([])
expect(ctx.tasks.start(producer().spec)).toBe('bash-1')
})
it('a failed owner-cleanup attach leaves the registry unchanged and does not poison the owner', async () => {
const ctx = await harness()
const ghost = stubAgent(ctx, 'ghost') // never registered in ctx.agents
// Exact-instance validation precedes registry mutation and cleanup attachment.
expect(() => ctx.tasks.start(producer({ owner: ghost }).spec))
.toThrow('is not the registered agent instance')
expect(ctx.tasks.list(ghost)).toEqual([])
// A later valid registration must still attach cleanup for the same object.
ctx.agents.register(ghost)
const cancels: (string | undefined)[] = []
let settle!: (outcome: TaskOutcome) => void
const id = ctx.tasks.start({
kind: 'bash',
label: 'after retry',
owner: ghost,
run: () => ({
cancel(reason) { cancels.push(reason); settle({ status: 'killed' }) },
done: new Promise<TaskOutcome>((res) => { settle = res }),
}),
})
expect(id).toBe('bash-1') // the failed attempt burned no counter
await disposeAgentScope(ghost)
expect(cancels).toEqual(['owner disposed'])
expect(ctx.tasks.list(ghost)).toEqual([])
})
it('rejects a stale owner instance after another agent reuses its id', async () => {
const ctx = await harness()
const staleOwner = stubAgent(ctx, 'owner')
const unregisterStale = ctx.agents.register(staleOwner)
unregisterStale()
const currentOwner = stubAgent(ctx, 'owner')
ctx.agents.register(currentOwner)
const current = producer({ owner: currentOwner })
ctx.tasks.start(current.spec) // Attach the current owner's cleanup first.
const stale = producer({ owner: staleOwner })
const staleRun = vi.fn(() => stale.spec.run())
expect(() => ctx.tasks.start({ ...stale.spec, run: staleRun }))
.toThrow('is not the registered agent instance')
expect(staleRun).not.toHaveBeenCalled()
// Access is keyed by the unified session id, so a reconnect carrying the
// same identity can observe the current task even though stale ownership
// registration is rejected by exact-instance validation.
expect(ctx.tasks.list(staleOwner)).toHaveLength(1)
expect(ctx.tasks.list(currentOwner)).toHaveLength(1)
current.settle({ status: 'completed' })
await tick()
await disposeAgentScope(currentOwner)
})
})
describe('TaskService owner cleanup', () => {
it('drains the owner: cancels live tasks, awaits settlement, drops snapshots', async () => {
const ctx = await harness()
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
// The producer settles only when cancelled — models a child that stops on request.
let settle!: (outcome: TaskOutcome) => void
const cancels: (string | undefined)[] = []
ctx.tasks.start({
kind: 'subagent',
label: 'long research',
owner,
run: () => ({
cancel(reason) { cancels.push(reason); settle({ status: 'killed' }) },
done: new Promise<TaskOutcome>((res) => { settle = res }),
}),
})
const terminal = producer({ owner })
ctx.tasks.start(terminal.spec)
terminal.settle({ status: 'completed' })
await tick()
await disposeAgentScope(owner)
expect(cancels).toEqual(['owner disposed'])
// Snapshots dropped: nothing of the owner's remains, listing is empty.
expect(ctx.tasks.list(owner)).toEqual([])
})
it('attaches one cleanup per owner and drains all owned tasks with the scope', async () => {
const ctx = await harness()
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
const first = producer({ owner })
const second = producer({ owner })
ctx.tasks.start(first.spec)
ctx.tasks.start(second.spec)
first.settle({ status: 'completed' })
second.settle({ status: 'completed' })
await tick()
expect(owner.ctx.fiber.getEffects().filter(effect => effect.label === 'tasks.ownerCleanup()')).toHaveLength(1)
await disposeAgentScope(owner)
expect(ctx.tasks.list(owner)).toEqual([])
})
it('does not let an old scope cleanup cancel a same-id/session replacement task', async () => {
const ctx = await harness()
const oldOwner = stubAgent(ctx, 'owner')
const detachOld = ctx.agents.register(oldOwner)
const cancels: string[] = []
function start(owner: Agent, label: string): TaskId {
let settle!: (outcome: TaskOutcome) => void
return ctx.tasks.start({
kind: 'bash',
label,
owner,
run: () => ({
cancel() { cancels.push(label); settle({ status: 'killed' }) },
done: new Promise<TaskOutcome>((resolve) => { settle = resolve }),
}),
})
}
start(oldOwner, 'old task')
detachOld()
const replacement = stubAgent(ctx, 'owner')
ctx.agents.register(replacement)
const replacementId = start(replacement, 'replacement task')
await disposeAgentScope(oldOwner)
expect(cancels).toEqual(['old task'])
expect(ctx.tasks.list(replacement).map(task => task.id)).toEqual([replacementId])
await disposeAgentScope(replacement)
expect(cancels).toEqual(['old task', 'replacement task'])
})
it('registers owner cleanup on the agent scope rather than the tasks fiber', async () => {
const ctx = new Context()
await ctx.plugin(AgentRegistry)
const tasksFiber = await ctx.plugin(TaskService)
ctx.tasks.attachSurface('test-surface')
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
const ownerCleanupEffects = () => owner.ctx.fiber.getEffects()
.filter(effect => effect.label === 'tasks.ownerCleanup()')
const first = producer({ owner })
ctx.tasks.start(first.spec)
expect(ownerCleanupEffects()).toHaveLength(1)
first.settle({ status: 'completed' })
await tick()
expect(tasksFiber.getEffects().some(effect => effect.label === 'tasks.ownerCleanup()')).toBe(false)
await disposeAgentScope(owner)
// Only the owner registration is released; the long-lived tasks service
// and its own teardown effect remain active.
expect(ownerCleanupEffects()).toHaveLength(0)
expect(ctx.get('tasks')).toBeDefined()
expect(tasksFiber.getEffects().some(effect => effect.label === 'tasks teardown')).toBe(true)
})
it('force-fails a throwing teardown cancel without awaiting producer done, first outcome wins', async () => {
const ctx = await harness()
const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
let settle!: (outcome: TaskOutcome) => void
ctx.tasks.start({
kind: 'bash',
label: 'broken producer',
owner,
run: () => ({
cancel() { throw new Error('cancel boom') },
done: new Promise<TaskOutcome>((res) => { settle = res }),
}),
})
const drain = disposeAgentScope(owner)
let drained = false
void drain.then(() => { drained = true })
await tick()
const drainedWithoutProducerDone = drained
if (!drainedWithoutProducerDone) {
// Release the producer if the assertion fails so the test can finish.
settle({ status: 'completed' })
await drain
} else {
// A late producer completion must not replace the failure or notify twice.
settle({ status: 'completed' })
await tick()
}
expect(drainedWithoutProducerDone).toBe(true)
expect(warn).toHaveBeenCalledWith(expect.stringContaining('work may be orphaned'))
expect(seen).toHaveLength(1)
expect(seen[0]?.status).toBe('failed')
expect(seen[0]?.detail).toContain('cancel threw during teardown')
expect(ctx.tasks.list(owner)).toEqual([])
})
})
describe('TaskService disposal', () => {
it('cancels live tasks, awaits settlement, and silences listeners', async () => {
const ctx = new Context()
await ctx.plugin(AgentRegistry)
const fiber = await ctx.plugin(TaskService)
const surface = await ctx.plugin(Object.assign((inner: Context) => {
inner.tasks.attachSurface('test-surface')
}, { inject: ['tasks'] }))
void surface
const seen: string[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot.id))
let settle!: (outcome: TaskOutcome) => void
const cancels: (string | undefined)[] = []
ctx.tasks.start({
kind: 'bash',
label: 'sleep 600',
run: () => ({
cancel(reason) { cancels.push(reason); settle({ status: 'killed' }) },
done: new Promise<TaskOutcome>((res) => { settle = res }),
}),
})
await fiber.dispose()
expect(cancels).toEqual(['tasks service disposed'])
// The teardown kill settles AFTER the listener registry closed: silent.
expect(seen).toEqual([])
})
it('force-fails a throwing cancel so service disposal does not await producer done', async () => {
const ctx = new Context()
await ctx.plugin(AgentRegistry)
const fiber = await ctx.plugin(TaskService)
ctx.tasks.attachSurface('test-surface')
const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
const seen: TaskSnapshot[] = []
ctx.tasks.onTaskDone(snapshot => void seen.push(snapshot))
let settle!: (outcome: TaskOutcome) => void
ctx.tasks.start({
kind: 'bash',
label: 'broken service task',
run: () => ({
cancel() { throw new Error('service cancel boom') },
done: new Promise<TaskOutcome>((resolve) => { settle = resolve }),
}),
})
const disposal = fiber.dispose()
let disposed = false
void disposal.then(() => { disposed = true })
await tick()
const disposedWithoutProducerDone = disposed
if (!disposedWithoutProducerDone) {
// Release the producer if the assertion fails so the test can finish.
settle({ status: 'completed' })
await disposal
} else {
settle({ status: 'completed' })
await tick()
}
expect(disposedWithoutProducerDone).toBe(true)
expect(warn).toHaveBeenCalledWith(expect.stringContaining('work may be orphaned'))
expect(seen).toEqual([])
})
it('detaches owner effects from still-live agent scopes when the service unloads', async () => {
const ctx = new Context()
await ctx.plugin(AgentRegistry)
const tasksFiber = await ctx.plugin(TaskService)
ctx.tasks.attachSurface('test-surface')
const owner = stubAgent(ctx, 'owner')
ctx.agents.register(owner)
let settle!: (outcome: TaskOutcome) => void
ctx.tasks.start({
kind: 'bash',
label: 'owned work',
owner,
run: () => ({
cancel() { settle({ status: 'killed' }) },
done: new Promise<TaskOutcome>((resolve) => { settle = resolve }),
}),
})
const ownerEffects = () => owner.ctx.fiber.getEffects()
.filter(effect => effect.label === 'tasks.ownerCleanup()')
expect(ownerEffects()).toHaveLength(1)
await tasksFiber.dispose()
expect(ownerEffects()).toHaveLength(0)
})
it('detaching the last surface re-arms the register fence', async () => {
const ctx = new Context()
await ctx.plugin(TaskService)
const detachA1 = ctx.tasks.attachSurface('a')
const detachA2 = ctx.tasks.attachSurface('a') // duplicate name counts independently
const fiber = await ctx.plugin(Object.assign((inner: Context) => {
inner.tasks.attachSurface('b')
}, { inject: ['tasks'] }))
detachA1()
detachA1() // second call of the same disposer is a no-op
expect(() => ctx.tasks.start(producer().spec)).not.toThrow() // a ×1 + b remain
detachA2()
expect(() => ctx.tasks.start(producer().spec)).not.toThrow() // b remains
await fiber.dispose() // detaches b with its fiber (HMR safety)
expect(() => ctx.tasks.start(producer().spec)).toThrow('no control surface is attached')
})
})