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community.general/library/async_wrapper

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#!/usr/bin/python
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>, and others
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
try:
import json
except ImportError:
import simplejson as json
import shlex
import os
import subprocess
import sys
import datetime
import traceback
if len(sys.argv) < 3:
print json.dumps({
"failed" : True,
"msg" : "usage: async_wrapper <jid> <module_script> <args>. Humans, do not call directly!"
})
sys.exit(1)
jid = sys.argv[1]
wrapped_module = sys.argv[2]
args = sys.argv[3:]
cmd = "%s %s" % (wrapped_module, " ".join(args))
# setup logging directory
logdir = os.path.expanduser("~/.ansible_async")
log_path = os.path.join(logdir, jid)
if not os.path.exists(logdir):
try:
os.makedirs(logdir)
except:
print json.dumps({
"failed" : 1,
"msg" : "could not create: %s" % logdir
})
def _run_command(wrapped_cmd, jid, log_path):
logfile = open(log_path, "w+")
logfile.write(json.dumps({ "started" : 1, "ansible_job_id" : jid }))
result = {}
try:
cmd = shlex.split(wrapped_cmd)
subprocess.call("/usr/bin/logger %s" % wrapped_cmd, shell=True)
script = subprocess.Popen(cmd, shell=False,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = script.communicate()
result = json.loads(out)
except (OSError, IOError), e:
result = {
"failed": 1,
"msg": str(e),
}
except:
result = {
"failed" : 1,
"msg" : traceback.format_exc()
}
result['ansible_job_id'] = jid
logfile = open(log_path, "w+")
logfile.write(json.dumps(result))
logfile.close()
# TEMPORARY:
print json.dumps(result)
# TODO: daemonize this with time limits
# TODO: might be nice to keep timing data, eventually...
_run_command(cmd, jid, log_path)