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143 lines
4.2 KiB
Python
143 lines
4.2 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2012, Jeroen Hoekx <jeroen@hoekx.be>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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import socket
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import datetime
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import time
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import sys
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DOCUMENTATION = '''
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---
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module: wait_for
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short_description: Waits for a given port to become accessible on a server.
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description:
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- This is useful for when services are not immediately available after
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their init scripts return - which is true of certain Java application
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servers. It is also useful when starting guests with the M(virt) module and
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needing to pause until they are ready.
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version_added: "0.7"
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options:
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host:
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description:
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- hostname or IP address to wait for
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required: false
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default: "127.0.0.1"
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aliases: []
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timeout:
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description:
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- maximum number of seconds to wait for
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required: false
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default: 300
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delay:
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description:
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- number of seconds to wait before starting to poll
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required: false
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default: 0
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port:
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description:
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- port number to poll
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required: true
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state:
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description:
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- either C(started), or C(stopped) depending on whether the module should
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poll for the port being open or closed.
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choices: [ "started", "stopped" ]
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default: "started"
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notes: []
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requirements: []
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author: Jeroen Hoekx
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'''
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EXAMPLES = '''
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# wait 300 seconds for port 8000 to become open on the host, don't start checking for 10 seconds
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wait_for: port=8000 delay=10"
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'''
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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host=dict(default='127.0.0.1'),
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timeout=dict(default=300),
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connect_timeout=dict(default=5),
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delay=dict(default=0),
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port=dict(required=True),
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state=dict(default='started', choices=['started', 'stopped']),
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),
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)
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params = module.params
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host = params['host']
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timeout = int(params['timeout'])
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connect_timeout = int(params['connect_timeout'])
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delay = int(params['delay'])
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port = int(params['port'])
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state = params['state']
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if delay:
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time.sleep(delay)
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start = datetime.datetime.now()
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if state == 'stopped':
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### first wait for the host to go down
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end = start + datetime.timedelta(seconds=timeout)
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while datetime.datetime.now() < end:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(connect_timeout)
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try:
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s.connect( (host, port) )
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s.shutdown(socket.SHUT_RDWR)
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s.close()
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time.sleep(1)
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except:
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break
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else:
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elapsed = datetime.datetime.now() - start
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module.fail_json(msg="Timeout when waiting for %s:%s to stop." % (host, port), elapsed=elapsed.seconds)
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elif state == 'started':
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### wait for the host to come up
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end = start + datetime.timedelta(seconds=timeout)
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while datetime.datetime.now() < end:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(connect_timeout)
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try:
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s.connect( (host, port) )
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s.shutdown(socket.SHUT_RDWR)
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s.close()
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break
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except:
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time.sleep(1)
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pass
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else:
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elapsed = datetime.datetime.now() - start
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module.fail_json(msg="Timeout when waiting for %s:%s" % (host, port), elapsed=elapsed.seconds)
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elapsed = datetime.datetime.now() - start
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module.exit_json(state=state, port=port, elapsed=elapsed.seconds)
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# this is magic, see lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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