132 lines
4.9 KiB
Python
132 lines
4.9 KiB
Python
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
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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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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import signal
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from ansible import constants as C
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from ansible.errors import *
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from ansible.executor.task_queue_manager import TaskQueueManager
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from ansible.playbook import Playbook
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from ansible.utils.debug import debug
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class PlaybookExecutor:
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'''
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This is the primary class for executing playbooks, and thus the
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basis for bin/ansible-playbook operation.
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'''
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def __init__(self, playbooks, inventory, variable_manager, loader, options):
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self._playbooks = playbooks
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self._inventory = inventory
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self._variable_manager = variable_manager
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self._loader = loader
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self._options = options
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self._tqm = TaskQueueManager(inventory=inventory, callback='default', variable_manager=variable_manager, loader=loader, options=options)
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def run(self):
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'''
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Run the given playbook, based on the settings in the play which
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may limit the runs to serialized groups, etc.
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'''
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signal.signal(signal.SIGINT, self._cleanup)
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result = 0
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try:
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for playbook_path in self._playbooks:
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pb = Playbook.load(playbook_path, variable_manager=self._variable_manager, loader=self._loader)
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# FIXME: playbook entries are just plays, so we should rename them
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for play in pb.get_entries():
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self._inventory.remove_restriction()
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# Create a temporary copy of the play here, so we can run post_validate
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# on it without the templating changes affecting the original object.
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all_vars = self._variable_manager.get_vars(loader=self._loader, play=play)
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new_play = play.copy()
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new_play.post_validate(all_vars, fail_on_undefined=False)
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for batch in self._get_serialized_batches(new_play):
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if len(batch) == 0:
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self._tqm._callback.playbook_on_play_start(new_play.name)
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self._tqm._callback.playbook_on_no_hosts_matched()
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result = 0
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break
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# restrict the inventory to the hosts in the serialized batch
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self._inventory.restrict_to_hosts(batch)
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# and run it...
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result = self._tqm.run(play=play)
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if result != 0:
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break
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if result != 0:
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# FIXME: do something here, to signify the playbook execution failed
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self._cleanup()
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return result
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except:
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self._cleanup()
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raise
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self._cleanup()
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return result
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def _cleanup(self, signum=None, framenum=None):
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return self._tqm.cleanup()
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def _get_serialized_batches(self, play):
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'''
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Returns a list of hosts, subdivided into batches based on
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the serial size specified in the play.
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'''
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# make sure we have a unique list of hosts
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all_hosts = self._inventory.get_hosts(play.hosts)
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# check to see if the serial number was specified as a percentage,
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# and convert it to an integer value based on the number of hosts
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if isinstance(play.serial, basestring) and play.serial.endswith('%'):
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serial_pct = int(play.serial.replace("%",""))
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serial = int((serial_pct/100.0) * len(all_hosts))
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else:
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serial = int(play.serial)
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# if the serial count was not specified or is invalid, default to
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# a list of all hosts, otherwise split the list of hosts into chunks
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# which are based on the serial size
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if serial <= 0:
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return [all_hosts]
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else:
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serialized_batches = []
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while len(all_hosts) > 0:
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play_hosts = []
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for x in range(serial):
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if len(all_hosts) > 0:
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play_hosts.append(all_hosts.pop(0))
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serialized_batches.append(play_hosts)
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return serialized_batches
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