waawal / undead

Dead Easy POSIX Daemons for Python (POC)

undead

Dead Easy POSIX Daemons for Python!

---

#!/usr/bin/python
import undead

@undead
def my_daemon_process():
    """ This function will be daemonized. """
    from time import sleep
    while True:
        sleep(10)

---

Installation

pip install undead

Settings

undead.name

Name of the logger and process.

Default: The __name__ attribute of your decorated callable

undead.pidfile

Path to pidfile.

Default: ~/.{undead.name}/{undead.name}.pid

undead.log_level

Log level.

Default: "WARNING"

undead.process_name

The name of the process (that shows up in ps etc.)

Default: None (No manipulation of process name).

Example

import undead

undead.name = "my-first-daemon"
undead.process_name = "leDeamon"

@undead
def my_daemon_process():
    """ This function will be daemonized. """
    # ...

Logging within the decorated handler

Just add log to your decorateds positional arguments and a logger will be passed down. Log away captain!

import undead

@undead
def i_am_undead(log):
    log.warning("I'm warning you!")
    log.info("Soap, 2 for $1.99")

The logfile will be created in ~/.i_am_undead

License

MIT

undead's Issues

Daemon silently fails to start

I notice you added the closing of file descriptors today, but this inadvertently silences the notice that the file is still locked when trying to start the daemon.

This post suggests opening for exclusive write instead of using filelock. Your child might then just not close this file descriptor, allowing you to emit messages before stdout is lost.
http://stackoverflow.com/questions/5917018/to-ensure-that-only-one-copy-of-daemon-is-running