oi

python library for writing long running processes with a cli interface

Install

Note: You need nanomsg installed on your system:

$ git clone git@github.com:nanomsg/nanomsg.git
$ cd nanomsg
$ ./configure
$ make
$ make check
$ sudo make install

Then install oi

$ pip install oi

Usage

1. Write your long running program

# programd.py

import oi

program = oi.Program('my program', 'ipc:///tmp/program.sock')
program.add_command('ping', lambda: 'pong')
program.add_command('state', lambda: program.state)
program.run()  # program will run forever

2. Add a ctl interface

# programctl.py

import oi

ctl = oi.CtlProgram('ctl program', address='ipc:///tmp/program.sock')
ctl.run()

3. Run program, then connect to it via ctl

# Run process
$ python programd

# OR with a configuration file
$ python programd --config /etc/program.conf

$ python programctl  # enter ctl loop
programctl > ping
pong

# OR ping end exit
$ python programctl ping

Quickly get started with a new project

$ mkdir xprogram
$ cd xprogram

$ oi init
$ make install

# Start your program
$ xprogramd

# Start ctl program
$ xprogramctl
ctl > ping
pong

# Upload to pypi (Edit setup.py before distributing)
$ make distribute

Now the interesting bit. Are you ready?

Run your program on one computer, then control it from another with a single line change (actually two).

Just change the address ipc:///tmp/program.sock to a tcp address, such as tcp://192.168.1.100:5000 in both your programd.py and programctl.py. That's it! (:

TODO

• Add more testing

License

MIT License