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License: MIT License
python library for writing long running processes with a cli interface
License: MIT License
I want to include oi
to enable IPC to a daemon I am writing.
Unfortunately, it seems that oi.Program class is parsing the command line, but since my program uses cli.app parser to include some option that the internal parser of oi.Program does not recognize, it fails when oi.Program.run() is called (and some options oi.Program doesn't recognize are passed)
This code, for instance, will fail if you run it with option --foo
:
#!/usr/bin/env python
import cli
import cli.app
import logging
import oi
import os
import threading
import time
class Daemon(cli.app.CommandLineApp):
def setup(self):
super(Daemon, self).setup()
self.add_param('--foo', action='store_true')
def main(self):
wdir = os.getcwd()
def commthread():
try:
comm = oi.Program(
"daemon",
"ipc://%s/daemon.sock" % wdir)
comm.add_command("ping", lambda: "pong")
comm.run()
except Exception as ex:
print("Error while running oi: %s" % ex)
self.comm = threading.Thread(target=commthread)
self.comm.start()
# main loop
self.main_loop()
def main_loop(self):
self.log.info("Entering main loop")
it = 0
while True:
it += 1
time.sleep(1)
if __name__ == "__main__":
Daemon().run()
The program will hang and print the following error:
usage: daemon_buggy.py [-h] [--version] [--debug] [--config [CONFIG]]
daemon_buggy.py: error: unrecognized arguments: --foo
I have found a workaround: just passing an args
class to oi.Program.run()
with the following attributes will avoid the problem:
debug
version
config
but it's not a clean solution. Do you have any alternative to fix this issue?
The package complains about there being no libhttpmsg library available and it doesn't seem to be [readily] available under Ubuntu:
Traceback (most recent call last):
File "programd.py", line 2, in <module>
import oi
File "/usr/local/lib/python2.7/dist-packages/oi/__init__.py", line 1, in <module>
from .core import *
File "/usr/local/lib/python2.7/dist-packages/oi/core.py", line 8, in <module>
from nanoservice import Service
File "/usr/local/lib/python2.7/dist-packages/nanoservice/__init__.py", line 1, in <module>
from .client import *
File "/usr/local/lib/python2.7/dist-packages/nanoservice/client.py", line 27, in <module>
import nanomsg
File "/usr/local/lib/python2.7/dist-packages/nanomsg/__init__.py", line 7, in <module>
from . import wrapper
File "/usr/local/lib/python2.7/dist-packages/nanomsg/wrapper.py", line 4, in <module>
_wrapper = _load_wrapper()
File "/usr/local/lib/python2.7/dist-packages/nanomsg_wrappers/__init__.py", line 23, in load_wrapper
return importlib.import_module('_nanomsg_ctypes')
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/usr/local/lib/python2.7/dist-packages/_nanomsg_ctypes/__init__.py", line 13, in <module>
_lib = ctypes.cdll.LoadLibrary('libnanomsg.so')
File "/usr/lib/python2.7/ctypes/__init__.py", line 443, in LoadLibrary
return self._dlltype(name)
File "/usr/lib/python2.7/ctypes/__init__.py", line 365, in __init__
self._handle = _dlopen(self._name, mode)
OSError: libnanomsg.so: cannot open shared object file: No such file or directory
I was testing the example on the web page, but when I try to instantiate a CtlProgram class I get:
Traceback (most recent call last):
File "programctl.py", line 5, in <module>
ctl = oi.CtlProgram('ctl program', address='ipc:///tmp/program.sock')
File "/home/antonio/git/others/oi/oi/core.py", line 257, in __init__
self.client = ClientWrapper(address, timeout) if address else None
File "/home/antonio/git/others/oi/oi/core.py", line 149, in __init__
self.c = self.create_client(address, timeout)
File "/home/antonio/git/others/oi/oi/core.py", line 163, in create_client
return make(addr)
File "/home/antonio/git/others/oi/oi/core.py", line 156, in make
c.sock._set_recv_timeout(timeout)
AttributeError: 'Client' object has no attribute 'sock'
The issue is solved by just removing the call to c.sock._set_recv_timeout(timeout)
in https://github.com/walkr/oi/blob/master/oi/core.py#L156
Would be nice to have encrypted comms.
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