z4j-taskiqscheduler

The taskiq-scheduler adapter for z4j.

Surfaces taskiq-scheduler periodic jobs on the dashboard's Schedules page as list/read inventory. Delete is advertised only for a custom source that overrides taskiq's unsupported delete_schedule default.

Compatibility

• TaskIQ 0.11+ (no upper bound)
• Python 3.11+

Full per-adapter matrix at https://docs.z4j.com/reference/compatibility/.

What it ships

taskiq-scheduler schedules are typically defined declaratively (label source, JSON file, or label decorators), so create / update are intentionally out of scope, those need a deploy round-trip. taskiq also has no enable/disable toggle or trigger-now primitive, so the dashboard hides those actions for this adapter.

Install

pip install z4j-taskiq z4j-taskiqscheduler

import asyncio
import logging
import os

from taskiq import TaskiqEvents, TaskiqScheduler
from taskiq.schedule_sources import LabelScheduleSource
from z4j_bare import install_agent
from z4j_taskiq import TaskiqEngineAdapter, attach_to_broker
from z4j_taskiqscheduler import TaskiqSchedulerAdapter

source = LabelScheduleSource(broker)
scheduler = TaskiqScheduler(broker=broker, sources=[source])
engine = TaskiqEngineAdapter(broker=broker)
attach_to_broker(broker, adapter=engine)
_z4j_installed = False
logger = logging.getLogger(__name__)


@broker.on_event(TaskiqEvents.CLIENT_STARTUP)
async def install_z4j_after_scheduler_sources(_state) -> None:
    global _z4j_installed
    if _z4j_installed:
        return
    owner_loop = asyncio.get_running_loop()
    try:
        scheduler_adapter = TaskiqSchedulerAdapter(
            source=source,
            source_loop=owner_loop,
        )
        install_agent(
            engines=[engine],
            schedulers=[scheduler_adapter],
            brain_url="https://brain.example.com",
            token="z4j_agent_...",
            project_id="my-project",
            hmac_secret=os.environ["Z4J_HMAC_SECRET"],
        )
    except Exception as exc:
        logger.error(
            "z4j TaskIQ scheduler install failed (%s)",
            type(exc).__name__,
        )
        return
    _z4j_installed = True

Run this module with TaskIQ's scheduler CLI. It starts each configured source before calling broker startup, so CLIENT_STARTUP installs z4j on the broker's real owner loop after this LabelScheduleSource is live. The guard makes a repeated callback reuse the same adapter and agent. The CLI owns broker startup and shutdown; do not call either lifecycle method from this module.

For a custom async schedule source, always pass that same verified loop as source_loop. z4j marshals get_schedules and supported delete_schedule calls to it once, without retrying an ambiguous delete. Only the exact stock LabelScheduleSource, whose read is an in-memory registry snapshot, supports an unbound direct read; custom sources fail closed until an owner is supplied.

Pairs with

• z4j-taskiq, engine adapter

Reliability

• Inventory failures skip the snapshot rather than publishing an authoritative empty schedule set.
• Custom source reads and deletes stay on their explicit owner event loop; cancellation is forwarded and z4j does not retry the operation.
• The adapter does not rewrite schedule definitions. Delete is advertised and delegated only when a custom source overrides taskiq's failing default; the standard label source remains read-only.

Documentation

Full docs at docs.z4j.com/schedulers/taskiq-scheduler/.

License

Apache-2.0, see LICENSE.

Links

• Homepage: https://z4j.com
• Documentation: https://docs.z4j.com
• PyPI: https://pypi.org/project/z4j-taskiqscheduler/
• Issues: https://github.com/z4jdev/z4j-taskiqscheduler/issues
• Changelog: CHANGELOG.md
• Security: security@z4j.com (see SECURITY.md)