Logging wrapper for any command

logging_wrapper.py

#!/usr/bin/python
#
# Some command in the system being called in mysterious conditions?
# Use the logging wrapper!
# It will log all calls of a command along with process tree 
# ("stack trace" of all calling processes)
#
# Usage:
# pip install psutil
# mv /usr/bin/snoopedcommand /usr/bin/snoopedcommand_wrapped
# cp logging_wrapper.py /usr/bin/snoopedcommand
# chmod +x /usr/bin/snoopedcommand
# tail -f /tmp/call_dbg.log
#



import os, psutil, datetime, subprocess, sys

proc = psutil.Process(os.getpid())
i = 0

f = open('/tmp/call_dbg.log', 'a')
f.write("========== " + str(datetime.datetime.now()) + "\n")

cmdline = []

while proc.pid > 0:
    if i == 0:
        cmdline.append(proc.cmdline[1] + "_wrapped")
        cmdline += proc.cmdline[2:]
    f.write(('%2d\t' % i) +  ' '.join(proc.cmdline) + "\n")
    proc = proc.parent
    i += 1

f.write("==========\n")
f.close()

#print cmdline
subprocess.Popen(cmdline, stdout=sys.stdout, stderr=sys.stderr).communicate()