Re: [Pyst-users] trouble with external command

[Michael B. <mbe...@gm...>]

ok, I redirected stderr to a file, here it is:
begin
log____________________________________________________________________
Traceback (most recent call last):
  File "/var/lib/asterisk/agi-bin/voicecmd_py.agi", line 76, in <module>
    check_call([cmd,arg1,arg2], shell=False)
  File "/usr/lib64/python2.6/subprocess.py", line 500, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/lib64/python2.6/subprocess.py", line 478, in call
    p = Popen(*popenargs, **kwargs)
  File "/usr/lib64/python2.6/subprocess.py", line 642, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.6/subprocess.py", line 1234, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
___________________________________________________________________________
end log


and here is the agi itself:
begin
script__________________________________________________________________
#!/usr/bin/env python


from subprocess import *
from asterisk.agi import *
import os
import sys

sys.stdout = open('/tmp/pyoutfile', 'w')
sys.stderr = open('/tmp/pyerrfile', 'w')


#print "hello"


#def main():
agi = AGI()
agi.verbose("python agi started", 1)
callerId = agi.env['agi_callerid']
agi.verbose("call from %s" % callerId)

cmd = agi.env['agi_arg_1']
agi.verbose("command text: %s" % cmd)
cmd = cmd.lower()

words = cmd.split()
for word in words:

     agi.verbose("word: %s" % word)

if any("theater" in s for s in words):
room = "theater"
elif any("kitchen" in s for s in words):
        room = "kitchen"
elif any("master" in s for s in words):
        room = "masterbedroom"
elif any("season" in s for s in words):
        room = "3season"
elif any("outside" in s for s in words):
        room = "deck"
else:
room = "none"

if any("light" in s for s in words):
        item = "light"
elif any("music" in s for s in words):
        item = "music"
else:
        item = "none"


if any("off" in s for s in words):
        value = "off"
elif any("medium" in s for s in words):
        value = "medium"
elif any("on" in s for s in words):
        value = "on"
else:
        value = "none"


agi.verbose("room: %s" % room)
agi.verbose("item: %s" % item)
agi.verbose("value: %s" % value)

if (item == "music") and (value == "on" or value == "off") and (not room ==
"none"):
fullcmd = "squeezy" + " -" + room + " -" + value
cmd = "squeezy"
arg1 = "-" + room
arg2 = "-" + value
agi.verbose(cmd)
agi.verbose(arg1)
agi.verbose(arg2)
agi.verbose(fullcmd)
#out = os.system(fullcmd)
check_call([cmd,arg1,arg2], shell=False)


agi.verbose("python agi ended")
________________________________________________________________________
end script



if I run this in an outside python script it works just fine, no errors,
I've run it as asterisk and root
begin
script_________________________________________________________________
#!/usr/bin/env python

from subprocess import *
import os

cmd = "turn outside music on"

words = cmd.split()
for word in words:

     print "word: %s" % word

if any("theater" in s for s in words):
room = "theater"
elif any("kitchen" in s for s in words):
        room = "kitchen"
elif any("outside" in s for s in words):
        room = "deck"
else:
room = "none"

if any("light" in s for s in words):
        item = "light"
elif any("music" in s for s in words):
        item = "music"
else:
        item = "none"


if any("off" in s for s in words):
        value = "off"
elif any("medium" in s for s in words):
        value = "medium"
elif any("on" in s for s in words):
        value = "on"
else:
        value = "none"


print "room: %s" % room
print "item: %s" % item
print "value: %s" % value

if (item == "music") and (value == "on" or value == "off") and (not room ==
"none"):
        fullcmd = "squeezy" + " -" + room + " -" + value
        cmd = "squeezy"
        arg1 = "-" + room
        arg2 = "-" + value
        #os.system(fullcmd)
        check_call([cmd,arg1,arg2],shell=False)
___________________________________________________________________________
end script


On Sun, Apr 20, 2014 at 2:39 AM, Michael Belleville
<mbe...@gm...>wrote:

> I've tried using both os.system as well as subprocess.call to invoke an
> external command that is not working for me.  It has something to do with
> the command I am trying to run, which is squeezy, a command line interface
> for logitech media center.
>
> I've been able to use os.system as well as subprocess.call successfully in
> an agi using other commands, but not squeezy.
>
> I can get squeezy to work using both os.system as well as subprocess.call
> in an external python script if I copy out the revelant chunk of code, but
> it will not work in an agi.  It works in an external python script if I run
> it as either root or asterisk, so I don't think it is a permissions issue...
>
> If I try to run squeezy in the agi using subprocess.call or
> subprocess.check_call, the python agi dies right there
>
> if I use os.system, the command still doesn't run as expected, but the agi
> continues normally.
>
> I don't know how to capture any useful output since the agi dies if I try
> to use subprocess.check_call.
>
> I don't see any of the regular python error messages in my asterisk CLI
> output, the only output I see I generate myself with agi.verbose
>
> How can I get to what is happening in the agi?  Can the python
> errors/output be redirected somewhere I can see them?  I have been
> debugging my issues using external python scripts to test, but in this case
> my issue goes away in the external script...
>
> I would appreciate any advice :)
>
> thank you very much to all for the wonderful piece of software, it is so
> nice to be able to use python for agi scripts!
>