A colony of interacting processes

Overview

NColony

Infrastructure for running "colonies" of processes.

https://travis-ci.org/ncolony/ncolony.svg?branch=master Documentation Status

Hacking

$ tox

Should DTRT -- if it passes, it means unit tests are passing, and 100% coverage. Note that Travis-CI will automatically run tests on pull requests.

Please feel free to submit pull requests which are failing. However, they cannot be merged until the they are green in Travis-CI.

Release

  • Checkout a new branch
  • Run python -m incremental.update ncolony to update the version number.
  • Create a pull request
  • Merge the pull request
  • Run tox
  • Run twine upload build/tox/py27-wheel/tmp/dist/*

Contributors

Moshe Zadka <[email protected]> Mark Williams <[email protected]>

License

MIT License

Comments
  • fix pylint error

    fix pylint error

    We pin pylint to the current latest, and fix the current problems.

    PyLint adds new issues every release -- this lets us choose when we get them instead of bitrotting.

    opened by moshez 1
  • Port to Python 3.6 compatibility

    Port to Python 3.6 compatibility

    The usual stuff (six, unicode carefulness, print()) plus:

    • Move to incremental, versioneer had weird problems on 3.6
    • im_self/self for methods
    • Move to saner way of testing functions, required code changes
    opened by moshez 1
  • let environment pass to sub-processes

    let environment pass to sub-processes

    docker ENV has this handy syntax to let you reference the previous value of an env-var

    PATH=/mystuff/bin/:${PATH}
    

    Something like that would be nice. Or, perhaps alternatively, the ability to mark the whole environment or certain variables as pass-through. (PATH, PYTHONPATH, things like that).

    opened by kurtbrose 1
  • Add example: a full app

    Add example: a full app

    Write a simple hello-world klein app that reports web statistics to statsd, and run an example with a beat-based health-check and HTTP-based check, a statsd server, a carbon server, and a graphite server which allows monitoring of the app.

    opened by moshez 1
  • ncolony-schedule and ncolony-beatcheck don't beat

    ncolony-schedule and ncolony-beatcheck don't beat

    In ncolony/schedulelib.py service, and ncolony/beatcheck.py service, the services need to look for an NCOLONY_CONFIG environment variable, and if one is found then to start a service that beats.

    opened by moshez 1
  • Remove extraneous `gather` dependencies from tox.ini

    Remove extraneous `gather` dependencies from tox.ini

    Per https://github.com/ncolony/ncolony/pull/61#issuecomment-351845310, no tox test environment needs to depend on gather, because ncolony itself depends on it.

    opened by markrwilliams 0
  • Narrative docs

    Narrative docs

    • Explain python -m ncolony.ctl/"from ncolony import ctllib"/create JSON files options.
    • Explain each field. Give thorough examples.
    • Explain --messages/--config
    • Show a run through of starting up a system, recovering from problems and restarting things.
    opened by moshez 0
  • demo examples don't work

    demo examples don't work

    (venv) => twistd -n ncolony --messages messages --config conf 2018-09-30T09:38:09-0700 [twisted.scripts._twistd_unix.UnixAppLogger#info] twistd 18.7.0 (/Users/nona/projects/ncolony_test/venv/bin/python 2.7.10) starting up. 2018-09-30T09:38:09-0700 [twisted.scripts._twistd_unix.UnixAppLogger#info] reactor class: twisted.internet.selectreactor.SelectReactor.

    Good so far... but then (and right from the example here https://ncolony.readthedocs.io/en/latest/running.html#running-ncolony):

    (venv) => python -m ncolony ctl add my-cat-program --cmd cat usage: main.py [-h] --messages MESSAGES --config CONFIG {restart-all,restart,remove,add} ... main.py: error: argument --messages is required

    Fiddling with arguments specified in the trace doesn't seem to work.

    Suggestions welcomed.

    opened by minskmaz 2
  • Can't add a command with no arguments

    Can't add a command with no arguments

    $ python -m ncolony ctl --messages /tmp/message --config /tmp/config add test --cmd date
    Traceback (most recent call last):
      File "/home/mrw/.pyenv/versions/2.7.13/lib/python2.7/runpy.py", line 174, in _run_module_as_main
        "__main__", fname, loader, pkg_name)
      File "/home/mrw/.pyenv/versions/2.7.13/lib/python2.7/runpy.py", line 72, in _run_code
        exec code in run_globals
      File "/home/mrw/src/python/ncolony/ncolony/__main__.py", line 21, in <module>
        output=sys.stdout
      File "/home/mrw/.virtualenvs/ncolony/lib/python2.7/site-packages/gather/api.py", line 200, in run
        commands[argv[0]](argv)
      File "ncolony/ctllib.py", line 212, in main
        call(ns)
      File "ncolony/ctllib.py", line 175, in call
        func(places, **results)
      File "ncolony/ctllib.py", line 72, in add
        args = [cmd]+args
    TypeError: can only concatenate list (not "NoneType") to list
    

    That's because argparse's append action allows its target value to default to None.

    opened by markrwilliams 0
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