85 lines
3.2 KiB
Python
85 lines
3.2 KiB
Python
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# (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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from ansible.plugins.strategies import StrategyBase
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from ansible.utils.debug import debug
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class StrategyModule(StrategyBase):
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def run(self, iterator, connection_info):
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'''
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The linear strategy is simple - get the next task and queue
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it for all hosts, then wait for the queue to drain before
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moving on to the next task
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'''
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result = True
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# iteratate over each task, while there is one left to run
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work_to_do = True
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while work_to_do:
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try:
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debug("getting the remaining hosts for this loop")
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hosts_left = self.get_hosts_remaining(iterator._play)
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debug("done getting the remaining hosts for this loop")
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if len(hosts_left) == 0:
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debug("out of hosts to run on")
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self._callback.playbook_on_no_hosts_remaining()
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result = False
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break
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# queue up this task for each host in the inventory
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callback_sent = False
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work_to_do = False
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for host in hosts_left:
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task = iterator.get_next_task_for_host(host)
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if not task:
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continue
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work_to_do = True
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if not callback_sent:
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self._callback.playbook_on_task_start(task.get_name(), False)
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callback_sent = True
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host_name = host.get_name()
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if 1: #host_name not in self._tqm._failed_hosts and host_name not in self._tqm._unreachable_hosts:
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self._blocked_hosts[host_name] = True
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self._queue_task(iterator._play, host, task, connection_info)
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self._process_pending_results()
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debug("done queuing things up, now waiting for results queue to drain")
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self._wait_on_pending_results()
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debug("results queue empty")
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except IOError, e:
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debug("got IOError: %s" % e)
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# most likely an abort, return failed
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return 1
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# run the base class run() method, which executes the cleanup function
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# and runs any outstanding handlers which have been triggered
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result &= super(StrategyModule, self).run(iterator, connection_info)
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return result
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