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#!/usr/bin/env python
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
import sys
import time
# read the args from sys.argv
throttledir, inventory_hostname, max_throttle = sys.argv[1:]
# format/create additional vars
max_throttle = int(max_throttle)
throttledir = os.path.expanduser(throttledir)
throttlefile = os.path.join(throttledir, inventory_hostname)
try:
# create the file
with open(throttlefile, 'a'):
os.utime(throttlefile, None)
# count the number of files in the dir
throttlelist = os.listdir(throttledir)
print("tasks: %d/%d" % (len(throttlelist), max_throttle))
# if we have too many files, fail
if len(throttlelist) > max_throttle:
print(throttlelist)
raise ValueError("Too many concurrent tasks: %d/%d" % (len(throttlelist), max_throttle))
time.sleep(1.5)
finally:
# remove the file, then wait to make sure it's gone
os.unlink(throttlefile)
while True:
if not os.path.exists(throttlefile):
break
time.sleep(0.1)
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