honker 0.2.5

Durable queues, streams, pub/sub, and cron scheduler on SQLite. One file, zero servers.

honker (Python)

Python binding for Honker: durable queues, streams, pub/sub, and time-trigger scheduling on SQLite.

Full docs live in the main repo and docs site:

• Main repo
• Docs

Install

pip install honker

The Python wheel includes Honker's SQLite loadable extension when the package is built through the release/proof workflow. To load Honker into your own sqlite3 or ORM connection:

import honker
import sqlite3

conn = sqlite3.connect("app.db")
honker.load_extension(conn)
conn.execute("SELECT honker_bootstrap()")

If a client needs the raw pieces instead, use extension_info():

path, entrypoint = honker.extension_info()

For local source builds, build and copy the extension before building the wheel:

git clone https://github.com/russellromney/honker
cd honker
cargo build --release -p honker-extension
scripts/copy-python-extension.sh

Quick start

import honker

db = honker.open("app.db")
q = db.queue("emails")

q.enqueue({"to": "[e-mail]"})

async for job in q.claim("worker-1"):
    send_email(job.payload)
    job.ack()

Delayed jobs use run_at:

import time

q.enqueue({"to": "[e-mail]"}, run_at=int(time.time()) + 10)

Recurring schedules use schedule expressions:

sched = db.scheduler()
sched.add("fast", queue="emails", schedule="@every 1s", payload={"kind": "tick"})

Supported schedule forms:

• 5-field cron: 0 3 * * *
• 6-field cron: */2 * * * * *
• interval: @every 1s

Notes

• claim() wakes on database updates and on due deadlines like run_at.
• schedule is the canonical recurring-schedule name.
• cron still works as a compatibility alias in older call sites.

For streams, notify/listen, tasks, SQL extension usage, and full scheduler docs, see the main repo and docs site.