230 lines
7.9 KiB
Python
230 lines
7.9 KiB
Python
#!/usr/bin/python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# (c) 2012, Jeroen Hoekx <jeroen@hoekx.be>
|
|
#
|
|
# 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/>.
|
|
|
|
import socket
|
|
import datetime
|
|
import time
|
|
import sys
|
|
import re
|
|
|
|
DOCUMENTATION = '''
|
|
---
|
|
module: wait_for
|
|
short_description: Waits for a condition before continuing.
|
|
description:
|
|
- Waiting for a port to become available is useful for when services
|
|
are not immediately available after their init scripts return -
|
|
which is true of certain Java application servers. It is also
|
|
useful when starting guests with the M(virt) module and
|
|
needing to pause until they are ready.
|
|
- This module can also be used to wait for a regex match a string to be present in a file.
|
|
- In 1.6 and later, this module can
|
|
also be used to wait for a file to be available or absent on the
|
|
filesystem.
|
|
version_added: "0.7"
|
|
options:
|
|
host:
|
|
description:
|
|
- hostname or IP address to wait for
|
|
required: false
|
|
default: "127.0.0.1"
|
|
aliases: []
|
|
timeout:
|
|
description:
|
|
- maximum number of seconds to wait for
|
|
required: false
|
|
default: 300
|
|
delay:
|
|
description:
|
|
- number of seconds to wait before starting to poll
|
|
required: false
|
|
default: 0
|
|
port:
|
|
description:
|
|
- port number to poll
|
|
required: false
|
|
state:
|
|
description:
|
|
- either C(present), C(started), or C(stopped), C(absent)
|
|
- When checking a port C(started) will ensure the port is open, C(stopped) will check that it is closed
|
|
- When checking for a file or a search string C(present) or C(started) will ensure that the file or string is present before continuing, C(absent) will check that file is absent or removed
|
|
choices: [ "present", "started", "stopped", "absent" ]
|
|
default: "started"
|
|
path:
|
|
version_added: "1.4"
|
|
required: false
|
|
description:
|
|
- path to a file on the filesytem that must exist before continuing
|
|
search_regex:
|
|
version_added: "1.4"
|
|
required: false
|
|
description:
|
|
- with the path option can be used match a string in the file that must match before continuing. Defaults to a multiline regex.
|
|
|
|
notes: []
|
|
requirements: []
|
|
author: Jeroen Hoekx, John Jarvis, Andrii Radyk
|
|
'''
|
|
|
|
EXAMPLES = '''
|
|
|
|
# wait 300 seconds for port 8000 to become open on the host, don't start checking for 10 seconds
|
|
- wait_for: port=8000 delay=10
|
|
|
|
# wait until the file /tmp/foo is present before continuing
|
|
- wait_for: path=/tmp/foo
|
|
|
|
# wait until the string "completed" is in the file /tmp/foo before continuing
|
|
- wait_for: path=/tmp/foo search_regex=completed
|
|
|
|
# wait until the lock file is removed
|
|
- wait_for: path=/var/lock/file.lock state=absent
|
|
|
|
# wait until the process is finished and pid was destroyed
|
|
- wait_for: path=/proc/3466/status state=absent
|
|
|
|
'''
|
|
|
|
def main():
|
|
|
|
module = AnsibleModule(
|
|
argument_spec = dict(
|
|
host=dict(default='127.0.0.1'),
|
|
timeout=dict(default=300),
|
|
connect_timeout=dict(default=5),
|
|
delay=dict(default=0),
|
|
port=dict(default=None),
|
|
path=dict(default=None),
|
|
search_regex=dict(default=None),
|
|
state=dict(default='started', choices=['started', 'stopped', 'present', 'absent']),
|
|
),
|
|
)
|
|
|
|
params = module.params
|
|
|
|
host = params['host']
|
|
timeout = int(params['timeout'])
|
|
connect_timeout = int(params['connect_timeout'])
|
|
delay = int(params['delay'])
|
|
if params['port']:
|
|
port = int(params['port'])
|
|
else:
|
|
port = None
|
|
state = params['state']
|
|
path = params['path']
|
|
search_regex = params['search_regex']
|
|
|
|
if port and path:
|
|
module.fail_json(msg="port and path parameter can not both be passed to wait_for")
|
|
if path and state == 'stopped':
|
|
module.fail_json(msg="state=stopped should only be used for checking a port in the wait_for module")
|
|
|
|
start = datetime.datetime.now()
|
|
|
|
if delay:
|
|
time.sleep(delay)
|
|
|
|
if state in [ 'stopped', 'absent' ]:
|
|
### first wait for the stop condition
|
|
end = start + datetime.timedelta(seconds=timeout)
|
|
|
|
while datetime.datetime.now() < end:
|
|
if path:
|
|
try:
|
|
f = open(path)
|
|
f.close()
|
|
time.sleep(1)
|
|
pass
|
|
except IOError:
|
|
break
|
|
elif port:
|
|
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
s.settimeout(connect_timeout)
|
|
try:
|
|
s.connect( (host, port) )
|
|
s.shutdown(socket.SHUT_RDWR)
|
|
s.close()
|
|
time.sleep(1)
|
|
except:
|
|
break
|
|
else:
|
|
elapsed = datetime.datetime.now() - start
|
|
if port:
|
|
module.fail_json(msg="Timeout when waiting for %s:%s to stop." % (host, port), elapsed=elapsed.seconds)
|
|
elif path:
|
|
module.fail_json(msg="Timeout when waiting for %s to be absent." % (path), elapsed=elapsed.seconds)
|
|
|
|
elif state in ['started', 'present']:
|
|
### wait for start condition
|
|
end = start + datetime.timedelta(seconds=timeout)
|
|
while datetime.datetime.now() < end:
|
|
if path:
|
|
try:
|
|
os.stat(path)
|
|
if search_regex:
|
|
try:
|
|
f = open(path)
|
|
try:
|
|
if re.search(search_regex, f.read(), re.MULTILINE):
|
|
break
|
|
else:
|
|
time.sleep(1)
|
|
finally:
|
|
f.close()
|
|
except IOError:
|
|
time.sleep(1)
|
|
pass
|
|
else:
|
|
break
|
|
except OSError, e:
|
|
# File not present
|
|
if os.errno == 2:
|
|
time.sleep(1)
|
|
else:
|
|
elapsed = datetime.datetime.now() - start
|
|
module.fail_json(msg="Failed to stat %s, %s" % (path, e.strerror), elapsed=elapsed.seconds)
|
|
elif port:
|
|
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
s.settimeout(connect_timeout)
|
|
try:
|
|
s.connect( (host, port) )
|
|
s.shutdown(socket.SHUT_RDWR)
|
|
s.close()
|
|
break
|
|
except:
|
|
time.sleep(1)
|
|
pass
|
|
else:
|
|
elapsed = datetime.datetime.now() - start
|
|
if port:
|
|
module.fail_json(msg="Timeout when waiting for %s:%s" % (host, port), elapsed=elapsed.seconds)
|
|
elif path:
|
|
if search_regex:
|
|
module.fail_json(msg="Timeout when waiting for search string %s in %s" % (search_regex, path), elapsed=elapsed.seconds)
|
|
else:
|
|
module.fail_json(msg="Timeout when waiting for file %s" % (path), elapsed=elapsed.seconds)
|
|
|
|
|
|
elapsed = datetime.datetime.now() - start
|
|
module.exit_json(state=state, port=port, search_regex=search_regex, path=path, elapsed=elapsed.seconds)
|
|
|
|
# import module snippets
|
|
from ansible.module_utils.basic import *
|
|
main()
|