hawkapi-taskiq 0.1.0

TaskIQ integration for HawkAPI — modern async-native task queue, DI, scheduling, JSON-only formatter

hawkapi-taskiq

TaskIQ integration for HawkAPI. Modern async-native task queue — a lighter, async-first alternative to Celery.

Install

pip install hawkapi-taskiq
pip install 'hawkapi-taskiq[redis]'    # + taskiq-redis
pip install 'hawkapi-taskiq[nats]'     # + taskiq-nats
pip install 'hawkapi-taskiq[cron]'     # + croniter for schedule validation

Quickstart

from hawkapi import Depends, HawkAPI
from hawkapi_taskiq import TaskIQConfig, get_broker, init_taskiq, task

app = HawkAPI()
broker = init_taskiq(app, config=TaskIQConfig(broker_url="redis://localhost:6379/0"))


@task(broker, name="emails.send")
async def send_email(to: str, subject: str) -> None:
    ...


@app.post("/notify")
async def notify(email: str, b = Depends(get_broker)):
    await send_email.kiq(email, "Hello")
    return {"ok": True}

Broker selection

Choose by URL scheme — all others are rejected:

URL	Broker
memory://	InMemoryBroker (tests, single-process)
redis://host:6379/0	ListQueueBroker (taskiq-redis)
rediss://...	same, with TLS
nats://server:4222	NatsBroker (taskiq-nats)

Any other scheme raises ValueError at create_broker() — this is a security feature, not a limitation. The allowlist prevents accidentally enabling brokers that use unsafe deserialization formats.

Scheduling

v0.1.0 ships a Scheduled value type with cron-syntax validation. Wire it to TaskIQ's native scheduler yourself — we deliberately avoid a "magic" registration helper that doesn't compose cleanly with the upstream TaskiqScheduler:

from hawkapi_taskiq import Scheduled
from taskiq import TaskiqScheduler
from taskiq.schedule_sources import LabelScheduleSource


@task(broker, name="myapp.cleanup")
async def cleanup() -> None:
    ...


# 1. Validate the schedule (cron syntax) up front.
schedule = Scheduled(cron="0 * * * *")    # raises ValueError if malformed

# 2. Apply it as a label LabelScheduleSource reads.
cleanup.labels["schedule"] = [{"cron": schedule.cron, "args": [], "kwargs": {}}]


# 3. Run a scheduler process alongside the worker.
scheduler = TaskiqScheduler(broker=broker, sources=[LabelScheduleSource(broker)])

Scheduled(cron="...") validates via croniter (install with [cron] extra). Both cron and interval_seconds set are rejected (exactly one is required).

Health

from hawkapi_taskiq import check_broker

report = await check_broker(broker)
# HealthReport(broker_ok=True, broker_type="ListQueueBroker", error="")

Testing

from hawkapi_taskiq import in_memory_broker, task


async def test_my_task():
    async with in_memory_broker() as broker:
        @task(broker, name="t.work")
        async def work(x: int) -> int:
            return x * 2

        await work.kiq(21)
        # Execute pending tasks via TaskIQ's normal flow.

Security

• JSON-only serialization — TaskIQ defaults are fine; we explicitly reject any other serializer via TaskIQConfig.serializer to prevent arbitrary-deserialization at consume time (CWE-502).
• Broker URL scheme allowlist — only memory://, redis://, rediss://, nats://.
• Task name registry — duplicate @task(name=...) raises at registration. TaskIQ silently overrides; we disallow.
• Cron expression validation at registration time — malformed expressions fail fast.

Development

git clone https://github.com/ashimov/hawkapi-taskiq.git
cd hawkapi-taskiq
uv sync --extra dev
uv run pytest -q
uv run ruff check . && uv run ruff format --check .
uv run pyright src/

License

MIT.