mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-07-03 23:50:58 +02:00
1240 lines
55 KiB
Python
1240 lines
55 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 cmd
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import functools
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import os
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import pprint
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import sys
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import threading
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import time
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from collections import deque
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from multiprocessing import Lock
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from jinja2.exceptions import UndefinedError
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from ansible import constants as C
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from ansible.errors import AnsibleError, AnsibleParserError, AnsibleUndefinedVariable
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from ansible.executor import action_write_locks
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from ansible.executor.process.worker import WorkerProcess
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from ansible.executor.task_result import TaskResult
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from ansible.inventory.host import Host
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from ansible.module_utils.six.moves import queue as Queue
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from ansible.module_utils.six import iteritems, itervalues, string_types
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from ansible.module_utils._text import to_text
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from ansible.module_utils.connection import Connection, ConnectionError
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from ansible.playbook.helpers import load_list_of_blocks
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from ansible.playbook.included_file import IncludedFile
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from ansible.playbook.task_include import TaskInclude
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from ansible.playbook.role_include import IncludeRole
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from ansible.plugins.loader import action_loader, connection_loader, filter_loader, lookup_loader, module_loader, test_loader
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from ansible.template import Templar
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from ansible.utils.vars import combine_vars
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from ansible.vars.clean import strip_internal_keys
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try:
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from __main__ import display
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except ImportError:
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from ansible.utils.display import Display
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display = Display()
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__all__ = ['StrategyBase']
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class StrategySentinel:
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pass
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# TODO: this should probably be in the plugins/__init__.py, with
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# a smarter mechanism to set all of the attributes based on
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# the loaders created there
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class SharedPluginLoaderObj:
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'''
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A simple object to make pass the various plugin loaders to
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the forked processes over the queue easier
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'''
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def __init__(self):
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self.action_loader = action_loader
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self.connection_loader = connection_loader
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self.filter_loader = filter_loader
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self.test_loader = test_loader
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self.lookup_loader = lookup_loader
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self.module_loader = module_loader
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_sentinel = StrategySentinel()
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def results_thread_main(strategy):
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while True:
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try:
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result = strategy._final_q.get()
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if isinstance(result, StrategySentinel):
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break
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else:
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strategy._results_lock.acquire()
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strategy._results.append(result)
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strategy._results_lock.release()
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except (IOError, EOFError):
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break
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except Queue.Empty:
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pass
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def debug_closure(func):
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"""Closure to wrap ``StrategyBase._process_pending_results`` and invoke the task debugger"""
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@functools.wraps(func)
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def inner(self, iterator, one_pass=False, max_passes=None):
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status_to_stats_map = (
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('is_failed', 'failures'),
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('is_unreachable', 'dark'),
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('is_changed', 'changed'),
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('is_skipped', 'skipped'),
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)
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# We don't know the host yet, copy the previous states, for lookup after we process new results
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prev_host_states = iterator._host_states.copy()
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results = func(self, iterator, one_pass=one_pass, max_passes=max_passes)
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_processed_results = []
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for result in results:
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task = result._task
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host = result._host
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_queued_task_args = self._queued_task_cache.pop((host.name, task._uuid), None)
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task_vars = _queued_task_args['task_vars']
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play_context = _queued_task_args['play_context']
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# Try to grab the previous host state, if it doesn't exist use get_host_state to generate an empty state
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try:
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prev_host_state = prev_host_states[host.name]
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except KeyError:
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prev_host_state = iterator.get_host_state(host)
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while result.needs_debugger(globally_enabled=self.debugger_active):
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next_action = NextAction()
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dbg = Debugger(task, host, task_vars, play_context, result, next_action)
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dbg.cmdloop()
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if next_action.result == NextAction.REDO:
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# rollback host state
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self._tqm.clear_failed_hosts()
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iterator._host_states[host.name] = prev_host_state
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for method, what in status_to_stats_map:
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if getattr(result, method)():
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self._tqm._stats.decrement(what, host.name)
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self._tqm._stats.decrement('ok', host.name)
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# redo
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self._queue_task(host, task, task_vars, play_context)
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_processed_results.extend(debug_closure(func)(self, iterator, one_pass))
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break
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elif next_action.result == NextAction.CONTINUE:
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_processed_results.append(result)
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break
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elif next_action.result == NextAction.EXIT:
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# Matches KeyboardInterrupt from bin/ansible
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sys.exit(99)
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else:
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_processed_results.append(result)
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return _processed_results
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return inner
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class StrategyBase:
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'''
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This is the base class for strategy plugins, which contains some common
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code useful to all strategies like running handlers, cleanup actions, etc.
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'''
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def __init__(self, tqm):
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self._tqm = tqm
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self._inventory = tqm.get_inventory()
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self._workers = tqm.get_workers()
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self._notified_handlers = tqm._notified_handlers
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self._listening_handlers = tqm._listening_handlers
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self._variable_manager = tqm.get_variable_manager()
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self._loader = tqm.get_loader()
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self._final_q = tqm._final_q
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self._step = getattr(tqm._options, 'step', False)
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self._diff = getattr(tqm._options, 'diff', False)
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self.flush_cache = getattr(tqm._options, 'flush_cache', False)
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# the task cache is a dictionary of tuples of (host.name, task._uuid)
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# used to find the original task object of in-flight tasks and to store
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# the task args/vars and play context info used to queue the task.
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self._queued_task_cache = {}
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# Backwards compat: self._display isn't really needed, just import the global display and use that.
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self._display = display
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# internal counters
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self._pending_results = 0
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self._cur_worker = 0
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# this dictionary is used to keep track of hosts that have
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# outstanding tasks still in queue
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self._blocked_hosts = dict()
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# this dictionary is used to keep track of hosts that have
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# flushed handlers
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self._flushed_hosts = dict()
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self._results = deque()
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self._results_lock = threading.Condition(threading.Lock())
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# create the result processing thread for reading results in the background
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self._results_thread = threading.Thread(target=results_thread_main, args=(self,))
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self._results_thread.daemon = True
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self._results_thread.start()
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# holds the list of active (persistent) connections to be shutdown at
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# play completion
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self._active_connections = dict()
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self.debugger_active = C.ENABLE_TASK_DEBUGGER
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def cleanup(self):
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# close active persistent connections
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for sock in itervalues(self._active_connections):
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try:
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conn = Connection(sock)
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conn.reset()
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except ConnectionError as e:
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# most likely socket is already closed
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display.debug("got an error while closing persistent connection: %s" % e)
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self._final_q.put(_sentinel)
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self._results_thread.join()
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def run(self, iterator, play_context, result=0):
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# execute one more pass through the iterator without peeking, to
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# make sure that all of the hosts are advanced to their final task.
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# This should be safe, as everything should be ITERATING_COMPLETE by
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# this point, though the strategy may not advance the hosts itself.
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inv_hosts = self._inventory.get_hosts(iterator._play.hosts, order=iterator._play.order)
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[iterator.get_next_task_for_host(host) for host in inv_hosts if host.name not in self._tqm._unreachable_hosts]
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# save the failed/unreachable hosts, as the run_handlers()
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# method will clear that information during its execution
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failed_hosts = iterator.get_failed_hosts()
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unreachable_hosts = self._tqm._unreachable_hosts.keys()
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display.debug("running handlers")
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handler_result = self.run_handlers(iterator, play_context)
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if isinstance(handler_result, bool) and not handler_result:
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result |= self._tqm.RUN_ERROR
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elif not handler_result:
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result |= handler_result
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# now update with the hosts (if any) that failed or were
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# unreachable during the handler execution phase
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failed_hosts = set(failed_hosts).union(iterator.get_failed_hosts())
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unreachable_hosts = set(unreachable_hosts).union(self._tqm._unreachable_hosts.keys())
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# return the appropriate code, depending on the status hosts after the run
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if not isinstance(result, bool) and result != self._tqm.RUN_OK:
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return result
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elif len(unreachable_hosts) > 0:
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return self._tqm.RUN_UNREACHABLE_HOSTS
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elif len(failed_hosts) > 0:
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return self._tqm.RUN_FAILED_HOSTS
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else:
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return self._tqm.RUN_OK
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def get_hosts_remaining(self, play):
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return [host for host in self._inventory.get_hosts(play.hosts)
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if host.name not in self._tqm._failed_hosts and host.name not in self._tqm._unreachable_hosts]
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def get_failed_hosts(self, play):
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return [host for host in self._inventory.get_hosts(play.hosts) if host.name in self._tqm._failed_hosts]
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def add_tqm_variables(self, vars, play):
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'''
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Base class method to add extra variables/information to the list of task
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vars sent through the executor engine regarding the task queue manager state.
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'''
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vars['ansible_current_hosts'] = [h.name for h in self.get_hosts_remaining(play)]
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vars['ansible_failed_hosts'] = [h.name for h in self.get_failed_hosts(play)]
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def _queue_task(self, host, task, task_vars, play_context):
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''' handles queueing the task up to be sent to a worker '''
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display.debug("entering _queue_task() for %s/%s" % (host.name, task.action))
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# Add a write lock for tasks.
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# Maybe this should be added somewhere further up the call stack but
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# this is the earliest in the code where we have task (1) extracted
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# into its own variable and (2) there's only a single code path
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# leading to the module being run. This is called by three
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# functions: __init__.py::_do_handler_run(), linear.py::run(), and
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# free.py::run() so we'd have to add to all three to do it there.
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# The next common higher level is __init__.py::run() and that has
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# tasks inside of play_iterator so we'd have to extract them to do it
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# there.
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if task.action not in action_write_locks.action_write_locks:
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display.debug('Creating lock for %s' % task.action)
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action_write_locks.action_write_locks[task.action] = Lock()
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# and then queue the new task
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try:
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# create a dummy object with plugin loaders set as an easier
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# way to share them with the forked processes
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shared_loader_obj = SharedPluginLoaderObj()
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queued = False
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starting_worker = self._cur_worker
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while True:
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worker_prc = self._workers[self._cur_worker]
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if worker_prc is None or not worker_prc.is_alive():
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self._queued_task_cache[(host.name, task._uuid)] = {
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'host': host,
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'task': task,
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'task_vars': task_vars,
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'play_context': play_context
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}
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worker_prc = WorkerProcess(self._final_q, task_vars, host, task, play_context, self._loader, self._variable_manager, shared_loader_obj)
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self._workers[self._cur_worker] = worker_prc
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worker_prc.start()
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display.debug("worker is %d (out of %d available)" % (self._cur_worker + 1, len(self._workers)))
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queued = True
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self._cur_worker += 1
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if self._cur_worker >= len(self._workers):
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self._cur_worker = 0
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if queued:
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break
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elif self._cur_worker == starting_worker:
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time.sleep(0.0001)
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self._pending_results += 1
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except (EOFError, IOError, AssertionError) as e:
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# most likely an abort
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display.debug("got an error while queuing: %s" % e)
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return
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display.debug("exiting _queue_task() for %s/%s" % (host.name, task.action))
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def get_task_hosts(self, iterator, task_host, task):
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if task.run_once:
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host_list = [host for host in self._inventory.get_hosts(iterator._play.hosts) if host.name not in self._tqm._unreachable_hosts]
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else:
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host_list = [task_host]
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return host_list
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def get_delegated_hosts(self, result, task):
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host_name = result.get('_ansible_delegated_vars', {}).get('ansible_delegated_host', None)
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if host_name is not None:
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actual_host = self._inventory.get_host(host_name)
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if actual_host is None:
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actual_host = Host(name=host_name)
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else:
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actual_host = Host(name=task.delegate_to)
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return [actual_host]
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@debug_closure
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def _process_pending_results(self, iterator, one_pass=False, max_passes=None):
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'''
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Reads results off the final queue and takes appropriate action
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based on the result (executing callbacks, updating state, etc.).
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'''
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ret_results = []
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def get_original_host(host_name):
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# FIXME: this should not need x2 _inventory
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host_name = to_text(host_name)
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if host_name in self._inventory.hosts:
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return self._inventory.hosts[host_name]
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else:
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return self._inventory.get_host(host_name)
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def search_handler_blocks_by_name(handler_name, handler_blocks):
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for handler_block in handler_blocks:
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for handler_task in handler_block.block:
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if handler_task.name:
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handler_vars = self._variable_manager.get_vars(play=iterator._play, task=handler_task)
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templar = Templar(loader=self._loader, variables=handler_vars)
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try:
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# first we check with the full result of get_name(), which may
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# include the role name (if the handler is from a role). If that
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# is not found, we resort to the simple name field, which doesn't
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# have anything extra added to it.
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target_handler_name = templar.template(handler_task.name)
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if target_handler_name == handler_name:
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return handler_task
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else:
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target_handler_name = templar.template(handler_task.get_name())
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if target_handler_name == handler_name:
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return handler_task
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except (UndefinedError, AnsibleUndefinedVariable):
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# We skip this handler due to the fact that it may be using
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# a variable in the name that was conditionally included via
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# set_fact or some other method, and we don't want to error
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# out unnecessarily
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continue
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return None
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def search_handler_blocks_by_uuid(handler_uuid, handler_blocks):
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for handler_block in handler_blocks:
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for handler_task in handler_block.block:
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if handler_uuid == handler_task._uuid:
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return handler_task
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return None
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def parent_handler_match(target_handler, handler_name):
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if target_handler:
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if isinstance(target_handler, (TaskInclude, IncludeRole)):
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try:
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handler_vars = self._variable_manager.get_vars(play=iterator._play, task=target_handler)
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templar = Templar(loader=self._loader, variables=handler_vars)
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target_handler_name = templar.template(target_handler.name)
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if target_handler_name == handler_name:
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return True
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else:
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target_handler_name = templar.template(target_handler.get_name())
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if target_handler_name == handler_name:
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return True
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except (UndefinedError, AnsibleUndefinedVariable):
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pass
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return parent_handler_match(target_handler._parent, handler_name)
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else:
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return False
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|
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cur_pass = 0
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while True:
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try:
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self._results_lock.acquire()
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task_result = self._results.popleft()
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except IndexError:
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break
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finally:
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self._results_lock.release()
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# get the original host and task. We then assign them to the TaskResult for use in callbacks/etc.
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original_host = get_original_host(task_result._host)
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queue_cache_entry = (original_host.name, task_result._task)
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found_task = self._queued_task_cache.get(queue_cache_entry)['task']
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original_task = found_task.copy(exclude_parent=True, exclude_tasks=True)
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original_task._parent = found_task._parent
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original_task.from_attrs(task_result._task_fields)
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task_result._host = original_host
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task_result._task = original_task
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# send callbacks for 'non final' results
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if '_ansible_retry' in task_result._result:
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self._tqm.send_callback('v2_runner_retry', task_result)
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continue
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elif '_ansible_item_result' in task_result._result:
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if task_result.is_failed() or task_result.is_unreachable():
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self._tqm.send_callback('v2_runner_item_on_failed', task_result)
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elif task_result.is_skipped():
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self._tqm.send_callback('v2_runner_item_on_skipped', task_result)
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else:
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if 'diff' in task_result._result:
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if self._diff or getattr(original_task, 'diff', False):
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self._tqm.send_callback('v2_on_file_diff', task_result)
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self._tqm.send_callback('v2_runner_item_on_ok', task_result)
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continue
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|
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if original_task.register:
|
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host_list = self.get_task_hosts(iterator, original_host, original_task)
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|
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clean_copy = strip_internal_keys(task_result._result)
|
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if 'invocation' in clean_copy:
|
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del clean_copy['invocation']
|
|
|
|
for target_host in host_list:
|
|
self._variable_manager.set_nonpersistent_facts(target_host, {original_task.register: clean_copy})
|
|
|
|
# all host status messages contain 2 entries: (msg, task_result)
|
|
role_ran = False
|
|
if task_result.is_failed():
|
|
role_ran = True
|
|
ignore_errors = original_task.ignore_errors
|
|
if not ignore_errors:
|
|
display.debug("marking %s as failed" % original_host.name)
|
|
if original_task.run_once:
|
|
# if we're using run_once, we have to fail every host here
|
|
for h in self._inventory.get_hosts(iterator._play.hosts):
|
|
if h.name not in self._tqm._unreachable_hosts:
|
|
state, _ = iterator.get_next_task_for_host(h, peek=True)
|
|
iterator.mark_host_failed(h)
|
|
state, new_task = iterator.get_next_task_for_host(h, peek=True)
|
|
else:
|
|
iterator.mark_host_failed(original_host)
|
|
|
|
# increment the failed count for this host
|
|
self._tqm._stats.increment('failures', original_host.name)
|
|
|
|
# grab the current state and if we're iterating on the rescue portion
|
|
# of a block then we save the failed task in a special var for use
|
|
# within the rescue/always
|
|
state, _ = iterator.get_next_task_for_host(original_host, peek=True)
|
|
|
|
if iterator.is_failed(original_host) and state and state.run_state == iterator.ITERATING_COMPLETE:
|
|
self._tqm._failed_hosts[original_host.name] = True
|
|
|
|
if state and iterator.get_active_state(state).run_state == iterator.ITERATING_RESCUE:
|
|
self._variable_manager.set_nonpersistent_facts(
|
|
original_host,
|
|
dict(
|
|
ansible_failed_task=original_task.serialize(),
|
|
ansible_failed_result=task_result._result,
|
|
),
|
|
)
|
|
else:
|
|
self._tqm._stats.increment('ok', original_host.name)
|
|
if 'changed' in task_result._result and task_result._result['changed']:
|
|
self._tqm._stats.increment('changed', original_host.name)
|
|
self._tqm.send_callback('v2_runner_on_failed', task_result, ignore_errors=ignore_errors)
|
|
elif task_result.is_unreachable():
|
|
ignore_unreachable = original_task.ignore_unreachable
|
|
if not ignore_unreachable:
|
|
self._tqm._unreachable_hosts[original_host.name] = True
|
|
iterator._play._removed_hosts.append(original_host.name)
|
|
else:
|
|
self._tqm._stats.increment('skipped', original_host.name)
|
|
task_result._result['skip_reason'] = 'Host %s is unreachable' % original_host.name
|
|
self._tqm._stats.increment('dark', original_host.name)
|
|
self._tqm.send_callback('v2_runner_on_unreachable', task_result)
|
|
elif task_result.is_skipped():
|
|
self._tqm._stats.increment('skipped', original_host.name)
|
|
self._tqm.send_callback('v2_runner_on_skipped', task_result)
|
|
else:
|
|
role_ran = True
|
|
|
|
if original_task.loop:
|
|
# this task had a loop, and has more than one result, so
|
|
# loop over all of them instead of a single result
|
|
result_items = task_result._result.get('results', [])
|
|
else:
|
|
result_items = [task_result._result]
|
|
|
|
for result_item in result_items:
|
|
if '_ansible_notify' in result_item:
|
|
if task_result.is_changed():
|
|
# The shared dictionary for notified handlers is a proxy, which
|
|
# does not detect when sub-objects within the proxy are modified.
|
|
# So, per the docs, we reassign the list so the proxy picks up and
|
|
# notifies all other threads
|
|
for handler_name in result_item['_ansible_notify']:
|
|
found = False
|
|
# Find the handler using the above helper. First we look up the
|
|
# dependency chain of the current task (if it's from a role), otherwise
|
|
# we just look through the list of handlers in the current play/all
|
|
# roles and use the first one that matches the notify name
|
|
target_handler = search_handler_blocks_by_name(handler_name, iterator._play.handlers)
|
|
if target_handler is not None:
|
|
found = True
|
|
if target_handler._uuid not in self._notified_handlers:
|
|
self._notified_handlers[target_handler._uuid] = []
|
|
if original_host not in self._notified_handlers[target_handler._uuid]:
|
|
self._notified_handlers[target_handler._uuid].append(original_host)
|
|
self._tqm.send_callback('v2_playbook_on_notify', target_handler, original_host)
|
|
else:
|
|
# As there may be more than one handler with the notified name as the
|
|
# parent, so we just keep track of whether or not we found one at all
|
|
for target_handler_uuid in self._notified_handlers:
|
|
target_handler = search_handler_blocks_by_uuid(target_handler_uuid, iterator._play.handlers)
|
|
if target_handler and parent_handler_match(target_handler, handler_name):
|
|
found = True
|
|
if original_host not in self._notified_handlers[target_handler._uuid]:
|
|
self._notified_handlers[target_handler._uuid].append(original_host)
|
|
self._tqm.send_callback('v2_playbook_on_notify', target_handler, original_host)
|
|
|
|
if handler_name in self._listening_handlers:
|
|
for listening_handler_uuid in self._listening_handlers[handler_name]:
|
|
listening_handler = search_handler_blocks_by_uuid(listening_handler_uuid, iterator._play.handlers)
|
|
if listening_handler is not None:
|
|
found = True
|
|
else:
|
|
continue
|
|
if original_host not in self._notified_handlers[listening_handler._uuid]:
|
|
self._notified_handlers[listening_handler._uuid].append(original_host)
|
|
self._tqm.send_callback('v2_playbook_on_notify', listening_handler, original_host)
|
|
|
|
# and if none were found, then we raise an error
|
|
if not found:
|
|
msg = ("The requested handler '%s' was not found in either the main handlers list nor in the listening "
|
|
"handlers list" % handler_name)
|
|
if C.ERROR_ON_MISSING_HANDLER:
|
|
raise AnsibleError(msg)
|
|
else:
|
|
display.warning(msg)
|
|
|
|
if 'add_host' in result_item:
|
|
# this task added a new host (add_host module)
|
|
new_host_info = result_item.get('add_host', dict())
|
|
self._add_host(new_host_info, iterator)
|
|
|
|
elif 'add_group' in result_item:
|
|
# this task added a new group (group_by module)
|
|
self._add_group(original_host, result_item)
|
|
|
|
if 'ansible_facts' in result_item:
|
|
|
|
# if delegated fact and we are delegating facts, we need to change target host for them
|
|
if original_task.delegate_to is not None and original_task.delegate_facts:
|
|
host_list = self.get_delegated_hosts(result_item, original_task)
|
|
else:
|
|
host_list = self.get_task_hosts(iterator, original_host, original_task)
|
|
|
|
if original_task.action == 'include_vars':
|
|
for (var_name, var_value) in iteritems(result_item['ansible_facts']):
|
|
# find the host we're actually referring too here, which may
|
|
# be a host that is not really in inventory at all
|
|
for target_host in host_list:
|
|
self._variable_manager.set_host_variable(target_host, var_name, var_value)
|
|
else:
|
|
cacheable = result_item.pop('_ansible_facts_cacheable', False)
|
|
for target_host in host_list:
|
|
if not original_task.action == 'set_fact' or cacheable:
|
|
self._variable_manager.set_host_facts(target_host, result_item['ansible_facts'].copy())
|
|
if original_task.action == 'set_fact':
|
|
self._variable_manager.set_nonpersistent_facts(target_host, result_item['ansible_facts'].copy())
|
|
|
|
if 'ansible_stats' in result_item and 'data' in result_item['ansible_stats'] and result_item['ansible_stats']['data']:
|
|
|
|
if 'per_host' not in result_item['ansible_stats'] or result_item['ansible_stats']['per_host']:
|
|
host_list = self.get_task_hosts(iterator, original_host, original_task)
|
|
else:
|
|
host_list = [None]
|
|
|
|
data = result_item['ansible_stats']['data']
|
|
aggregate = 'aggregate' in result_item['ansible_stats'] and result_item['ansible_stats']['aggregate']
|
|
for myhost in host_list:
|
|
for k in data.keys():
|
|
if aggregate:
|
|
self._tqm._stats.update_custom_stats(k, data[k], myhost)
|
|
else:
|
|
self._tqm._stats.set_custom_stats(k, data[k], myhost)
|
|
|
|
if 'diff' in task_result._result:
|
|
if self._diff or getattr(original_task, 'diff', False):
|
|
self._tqm.send_callback('v2_on_file_diff', task_result)
|
|
|
|
if not isinstance(original_task, TaskInclude):
|
|
self._tqm._stats.increment('ok', original_host.name)
|
|
if 'changed' in task_result._result and task_result._result['changed']:
|
|
self._tqm._stats.increment('changed', original_host.name)
|
|
|
|
# finally, send the ok for this task
|
|
self._tqm.send_callback('v2_runner_on_ok', task_result)
|
|
|
|
self._pending_results -= 1
|
|
if original_host.name in self._blocked_hosts:
|
|
del self._blocked_hosts[original_host.name]
|
|
|
|
# If this is a role task, mark the parent role as being run (if
|
|
# the task was ok or failed, but not skipped or unreachable)
|
|
if original_task._role is not None and role_ran: # TODO: and original_task.action != 'include_role':?
|
|
# lookup the role in the ROLE_CACHE to make sure we're dealing
|
|
# with the correct object and mark it as executed
|
|
for (entry, role_obj) in iteritems(iterator._play.ROLE_CACHE[original_task._role._role_name]):
|
|
if role_obj._uuid == original_task._role._uuid:
|
|
role_obj._had_task_run[original_host.name] = True
|
|
|
|
ret_results.append(task_result)
|
|
|
|
if one_pass or max_passes is not None and (cur_pass + 1) >= max_passes:
|
|
break
|
|
|
|
cur_pass += 1
|
|
|
|
return ret_results
|
|
|
|
def _wait_on_handler_results(self, iterator, handler, notified_hosts):
|
|
'''
|
|
Wait for the handler tasks to complete, using a short sleep
|
|
between checks to ensure we don't spin lock
|
|
'''
|
|
|
|
ret_results = []
|
|
handler_results = 0
|
|
|
|
display.debug("waiting for handler results...")
|
|
while (self._pending_results > 0 and
|
|
handler_results < len(notified_hosts) and
|
|
not self._tqm._terminated):
|
|
|
|
if self._tqm.has_dead_workers():
|
|
raise AnsibleError("A worker was found in a dead state")
|
|
|
|
results = self._process_pending_results(iterator)
|
|
ret_results.extend(results)
|
|
handler_results += len([
|
|
r._host for r in results if r._host in notified_hosts and
|
|
r.task_name == handler.name])
|
|
if self._pending_results > 0:
|
|
time.sleep(C.DEFAULT_INTERNAL_POLL_INTERVAL)
|
|
|
|
display.debug("no more pending handlers, returning what we have")
|
|
|
|
return ret_results
|
|
|
|
def _wait_on_pending_results(self, iterator):
|
|
'''
|
|
Wait for the shared counter to drop to zero, using a short sleep
|
|
between checks to ensure we don't spin lock
|
|
'''
|
|
|
|
ret_results = []
|
|
|
|
display.debug("waiting for pending results...")
|
|
while self._pending_results > 0 and not self._tqm._terminated:
|
|
|
|
if self._tqm.has_dead_workers():
|
|
raise AnsibleError("A worker was found in a dead state")
|
|
|
|
results = self._process_pending_results(iterator)
|
|
ret_results.extend(results)
|
|
if self._pending_results > 0:
|
|
time.sleep(C.DEFAULT_INTERNAL_POLL_INTERVAL)
|
|
|
|
display.debug("no more pending results, returning what we have")
|
|
|
|
return ret_results
|
|
|
|
def _add_host(self, host_info, iterator):
|
|
'''
|
|
Helper function to add a new host to inventory based on a task result.
|
|
'''
|
|
|
|
if host_info:
|
|
host_name = host_info.get('host_name')
|
|
|
|
# Check if host in inventory, add if not
|
|
if host_name not in self._inventory.hosts:
|
|
self._inventory.add_host(host_name, 'all')
|
|
new_host = self._inventory.hosts.get(host_name)
|
|
|
|
# Set/update the vars for this host
|
|
new_host.vars = combine_vars(new_host.get_vars(), host_info.get('host_vars', dict()))
|
|
|
|
new_groups = host_info.get('groups', [])
|
|
for group_name in new_groups:
|
|
if group_name not in self._inventory.groups:
|
|
self._inventory.add_group(group_name)
|
|
new_group = self._inventory.groups[group_name]
|
|
new_group.add_host(self._inventory.hosts[host_name])
|
|
|
|
# reconcile inventory, ensures inventory rules are followed
|
|
self._inventory.reconcile_inventory()
|
|
|
|
def _add_group(self, host, result_item):
|
|
'''
|
|
Helper function to add a group (if it does not exist), and to assign the
|
|
specified host to that group.
|
|
'''
|
|
|
|
changed = False
|
|
|
|
# the host here is from the executor side, which means it was a
|
|
# serialized/cloned copy and we'll need to look up the proper
|
|
# host object from the master inventory
|
|
real_host = self._inventory.hosts.get(host.name)
|
|
if real_host is None:
|
|
if host.name == self._inventory.localhost.name:
|
|
real_host = self._inventory.localhost
|
|
else:
|
|
raise AnsibleError('%s cannot be matched in inventory' % host.name)
|
|
group_name = result_item.get('add_group')
|
|
parent_group_names = result_item.get('parent_groups', [])
|
|
|
|
for name in [group_name] + parent_group_names:
|
|
if name not in self._inventory.groups:
|
|
# create the new group and add it to inventory
|
|
self._inventory.add_group(name)
|
|
changed = True
|
|
group = self._inventory.groups[group_name]
|
|
for parent_group_name in parent_group_names:
|
|
parent_group = self._inventory.groups[parent_group_name]
|
|
parent_group.add_child_group(group)
|
|
|
|
if real_host.name not in group.get_hosts():
|
|
group.add_host(real_host)
|
|
changed = True
|
|
|
|
if group_name not in host.get_groups():
|
|
real_host.add_group(group)
|
|
changed = True
|
|
|
|
if changed:
|
|
self._inventory.reconcile_inventory()
|
|
|
|
return changed
|
|
|
|
def _copy_included_file(self, included_file):
|
|
'''
|
|
A proven safe and performant way to create a copy of an included file
|
|
'''
|
|
ti_copy = included_file._task.copy(exclude_parent=True)
|
|
ti_copy._parent = included_file._task._parent
|
|
|
|
temp_vars = ti_copy.vars.copy()
|
|
temp_vars.update(included_file._args)
|
|
|
|
ti_copy.vars = temp_vars
|
|
|
|
return ti_copy
|
|
|
|
def _load_included_file(self, included_file, iterator, is_handler=False):
|
|
'''
|
|
Loads an included YAML file of tasks, applying the optional set of variables.
|
|
'''
|
|
|
|
display.debug("loading included file: %s" % included_file._filename)
|
|
try:
|
|
data = self._loader.load_from_file(included_file._filename)
|
|
if data is None:
|
|
return []
|
|
elif not isinstance(data, list):
|
|
raise AnsibleError("included task files must contain a list of tasks")
|
|
|
|
ti_copy = self._copy_included_file(included_file)
|
|
# pop tags out of the include args, if they were specified there, and assign
|
|
# them to the include. If the include already had tags specified, we raise an
|
|
# error so that users know not to specify them both ways
|
|
tags = included_file._task.vars.pop('tags', [])
|
|
if isinstance(tags, string_types):
|
|
tags = tags.split(',')
|
|
if len(tags) > 0:
|
|
if len(included_file._task.tags) > 0:
|
|
raise AnsibleParserError("Include tasks should not specify tags in more than one way (both via args and directly on the task). "
|
|
"Mixing tag specify styles is prohibited for whole import hierarchy, not only for single import statement",
|
|
obj=included_file._task._ds)
|
|
display.deprecated("You should not specify tags in the include parameters. All tags should be specified using the task-level option",
|
|
version='2.12')
|
|
included_file._task.tags = tags
|
|
|
|
block_list = load_list_of_blocks(
|
|
data,
|
|
play=iterator._play,
|
|
parent_block=ti_copy.build_parent_block(),
|
|
role=included_file._task._role,
|
|
use_handlers=is_handler,
|
|
loader=self._loader,
|
|
variable_manager=self._variable_manager,
|
|
)
|
|
|
|
# since we skip incrementing the stats when the task result is
|
|
# first processed, we do so now for each host in the list
|
|
for host in included_file._hosts:
|
|
self._tqm._stats.increment('ok', host.name)
|
|
|
|
except AnsibleError as e:
|
|
# mark all of the hosts including this file as failed, send callbacks,
|
|
# and increment the stats for this host
|
|
for host in included_file._hosts:
|
|
tr = TaskResult(host=host, task=included_file._task, return_data=dict(failed=True, reason=to_text(e)))
|
|
iterator.mark_host_failed(host)
|
|
self._tqm._failed_hosts[host.name] = True
|
|
self._tqm._stats.increment('failures', host.name)
|
|
self._tqm.send_callback('v2_runner_on_failed', tr)
|
|
return []
|
|
|
|
# finally, send the callback and return the list of blocks loaded
|
|
self._tqm.send_callback('v2_playbook_on_include', included_file)
|
|
display.debug("done processing included file")
|
|
return block_list
|
|
|
|
def run_handlers(self, iterator, play_context):
|
|
'''
|
|
Runs handlers on those hosts which have been notified.
|
|
'''
|
|
|
|
result = self._tqm.RUN_OK
|
|
|
|
for handler_block in iterator._play.handlers:
|
|
# FIXME: handlers need to support the rescue/always portions of blocks too,
|
|
# but this may take some work in the iterator and gets tricky when
|
|
# we consider the ability of meta tasks to flush handlers
|
|
for handler in handler_block.block:
|
|
if handler._uuid in self._notified_handlers and len(self._notified_handlers[handler._uuid]):
|
|
handler_vars = self._variable_manager.get_vars(play=iterator._play, task=handler)
|
|
templar = Templar(loader=self._loader, variables=handler_vars)
|
|
handler_name = handler.get_name()
|
|
try:
|
|
handler_name = templar.template(handler_name)
|
|
except (UndefinedError, AnsibleUndefinedVariable):
|
|
pass
|
|
result = self._do_handler_run(handler, handler_name, iterator=iterator, play_context=play_context)
|
|
if not result:
|
|
break
|
|
return result
|
|
|
|
def _do_handler_run(self, handler, handler_name, iterator, play_context, notified_hosts=None):
|
|
|
|
# FIXME: need to use iterator.get_failed_hosts() instead?
|
|
# if not len(self.get_hosts_remaining(iterator._play)):
|
|
# self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
|
|
# result = False
|
|
# break
|
|
if notified_hosts is None:
|
|
notified_hosts = self._notified_handlers[handler._uuid]
|
|
|
|
notified_hosts = self._filter_notified_hosts(notified_hosts)
|
|
|
|
if len(notified_hosts) > 0:
|
|
saved_name = handler.name
|
|
handler.name = handler_name
|
|
self._tqm.send_callback('v2_playbook_on_handler_task_start', handler)
|
|
handler.name = saved_name
|
|
|
|
run_once = False
|
|
try:
|
|
action = action_loader.get(handler.action, class_only=True)
|
|
if handler.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
|
|
run_once = True
|
|
except KeyError:
|
|
# we don't care here, because the action may simply not have a
|
|
# corresponding action plugin
|
|
pass
|
|
|
|
host_results = []
|
|
for host in notified_hosts:
|
|
if not handler.has_triggered(host) and (not iterator.is_failed(host) or play_context.force_handlers):
|
|
task_vars = self._variable_manager.get_vars(play=iterator._play, host=host, task=handler)
|
|
self.add_tqm_variables(task_vars, play=iterator._play)
|
|
self._queue_task(host, handler, task_vars, play_context)
|
|
if run_once:
|
|
break
|
|
|
|
# collect the results from the handler run
|
|
host_results = self._wait_on_handler_results(iterator, handler, notified_hosts)
|
|
|
|
try:
|
|
included_files = IncludedFile.process_include_results(
|
|
host_results,
|
|
iterator=iterator,
|
|
loader=self._loader,
|
|
variable_manager=self._variable_manager
|
|
)
|
|
except AnsibleError as e:
|
|
return False
|
|
|
|
result = True
|
|
if len(included_files) > 0:
|
|
for included_file in included_files:
|
|
try:
|
|
new_blocks = self._load_included_file(included_file, iterator=iterator, is_handler=True)
|
|
# for every task in each block brought in by the include, add the list
|
|
# of hosts which included the file to the notified_handlers dict
|
|
for block in new_blocks:
|
|
iterator._play.handlers.append(block)
|
|
iterator.cache_block_tasks(block)
|
|
for task in block.block:
|
|
task_name = task.get_name()
|
|
display.debug("adding task '%s' included in handler '%s'" % (task_name, handler_name))
|
|
self._notified_handlers[task._uuid] = included_file._hosts[:]
|
|
result = self._do_handler_run(
|
|
handler=task,
|
|
handler_name=task_name,
|
|
iterator=iterator,
|
|
play_context=play_context,
|
|
notified_hosts=included_file._hosts[:],
|
|
)
|
|
if not result:
|
|
break
|
|
except AnsibleError as e:
|
|
for host in included_file._hosts:
|
|
iterator.mark_host_failed(host)
|
|
self._tqm._failed_hosts[host.name] = True
|
|
display.warning(str(e))
|
|
continue
|
|
|
|
# remove hosts from notification list
|
|
self._notified_handlers[handler._uuid] = [
|
|
h for h in self._notified_handlers[handler._uuid]
|
|
if h not in notified_hosts]
|
|
display.debug("done running handlers, result is: %s" % result)
|
|
return result
|
|
|
|
def _filter_notified_hosts(self, notified_hosts):
|
|
'''
|
|
Filter notified hosts accordingly to strategy
|
|
'''
|
|
|
|
# As main strategy is linear, we do not filter hosts
|
|
# We return a copy to avoid race conditions
|
|
return notified_hosts[:]
|
|
|
|
def _take_step(self, task, host=None):
|
|
|
|
ret = False
|
|
msg = u'Perform task: %s ' % task
|
|
if host:
|
|
msg += u'on %s ' % host
|
|
msg += u'(N)o/(y)es/(c)ontinue: '
|
|
resp = display.prompt(msg)
|
|
|
|
if resp.lower() in ['y', 'yes']:
|
|
display.debug("User ran task")
|
|
ret = True
|
|
elif resp.lower() in ['c', 'continue']:
|
|
display.debug("User ran task and canceled step mode")
|
|
self._step = False
|
|
ret = True
|
|
else:
|
|
display.debug("User skipped task")
|
|
|
|
display.banner(msg)
|
|
|
|
return ret
|
|
|
|
def _cond_not_supported_warn(self, task_name):
|
|
display.warning("%s task does not support when conditional" % task_name)
|
|
|
|
def _execute_meta(self, task, play_context, iterator, target_host):
|
|
|
|
# meta tasks store their args in the _raw_params field of args,
|
|
# since they do not use k=v pairs, so get that
|
|
meta_action = task.args.get('_raw_params')
|
|
|
|
def _evaluate_conditional(h):
|
|
all_vars = self._variable_manager.get_vars(play=iterator._play, host=h, task=task)
|
|
templar = Templar(loader=self._loader, variables=all_vars)
|
|
return task.evaluate_conditional(templar, all_vars)
|
|
|
|
skipped = False
|
|
msg = ''
|
|
if meta_action == 'noop':
|
|
# FIXME: issue a callback for the noop here?
|
|
if task.when:
|
|
self._cond_not_supported_warn(meta_action)
|
|
msg = "noop"
|
|
elif meta_action == 'flush_handlers':
|
|
if task.when:
|
|
self._cond_not_supported_warn(meta_action)
|
|
self._flushed_hosts[target_host] = True
|
|
self.run_handlers(iterator, play_context)
|
|
self._flushed_hosts[target_host] = False
|
|
msg = "ran handlers"
|
|
elif meta_action == 'refresh_inventory' or self.flush_cache:
|
|
if task.when:
|
|
self._cond_not_supported_warn(meta_action)
|
|
self._inventory.refresh_inventory()
|
|
msg = "inventory successfully refreshed"
|
|
elif meta_action == 'clear_facts':
|
|
if _evaluate_conditional(target_host):
|
|
for host in self._inventory.get_hosts(iterator._play.hosts):
|
|
hostname = host.get_name()
|
|
self._variable_manager.clear_facts(hostname)
|
|
msg = "facts cleared"
|
|
else:
|
|
skipped = True
|
|
elif meta_action == 'clear_host_errors':
|
|
if _evaluate_conditional(target_host):
|
|
for host in self._inventory.get_hosts(iterator._play.hosts):
|
|
self._tqm._failed_hosts.pop(host.name, False)
|
|
self._tqm._unreachable_hosts.pop(host.name, False)
|
|
iterator._host_states[host.name].fail_state = iterator.FAILED_NONE
|
|
msg = "cleared host errors"
|
|
else:
|
|
skipped = True
|
|
elif meta_action == 'end_play':
|
|
if _evaluate_conditional(target_host):
|
|
for host in self._inventory.get_hosts(iterator._play.hosts):
|
|
if host.name not in self._tqm._unreachable_hosts:
|
|
iterator._host_states[host.name].run_state = iterator.ITERATING_COMPLETE
|
|
msg = "ending play"
|
|
elif meta_action == 'reset_connection':
|
|
all_vars = self._variable_manager.get_vars(play=iterator._play, host=target_host, task=task)
|
|
templar = Templar(loader=self._loader, variables=all_vars)
|
|
|
|
# apply the given task's information to the connection info,
|
|
# which may override some fields already set by the play or
|
|
# the options specified on the command line
|
|
play_context = play_context.set_task_and_variable_override(task=task, variables=all_vars, templar=templar)
|
|
|
|
# fields set from the play/task may be based on variables, so we have to
|
|
# do the same kind of post validation step on it here before we use it.
|
|
play_context.post_validate(templar=templar)
|
|
|
|
# now that the play context is finalized, if the remote_addr is not set
|
|
# default to using the host's address field as the remote address
|
|
if not play_context.remote_addr:
|
|
play_context.remote_addr = target_host.address
|
|
|
|
# We also add "magic" variables back into the variables dict to make sure
|
|
# a certain subset of variables exist.
|
|
play_context.update_vars(all_vars)
|
|
|
|
if task.when:
|
|
self._cond_not_supported_warn(meta_action)
|
|
|
|
if target_host in self._active_connections:
|
|
connection = Connection(self._active_connections[target_host])
|
|
del self._active_connections[target_host]
|
|
else:
|
|
connection = connection_loader.get(play_context.connection, play_context, os.devnull)
|
|
play_context.set_options_from_plugin(connection)
|
|
|
|
if connection:
|
|
try:
|
|
connection.reset()
|
|
msg = 'reset connection'
|
|
except ConnectionError as e:
|
|
# most likely socket is already closed
|
|
display.debug("got an error while closing persistent connection: %s" % e)
|
|
else:
|
|
msg = 'no connection, nothing to reset'
|
|
else:
|
|
raise AnsibleError("invalid meta action requested: %s" % meta_action, obj=task._ds)
|
|
|
|
result = {'msg': msg}
|
|
if skipped:
|
|
result['skipped'] = True
|
|
else:
|
|
result['changed'] = False
|
|
|
|
display.vv("META: %s" % msg)
|
|
|
|
return [TaskResult(target_host, task, result)]
|
|
|
|
def get_hosts_left(self, iterator):
|
|
''' returns list of available hosts for this iterator by filtering out unreachables '''
|
|
|
|
hosts_left = []
|
|
for host in self._inventory.get_hosts(iterator._play.hosts, order=iterator._play.order):
|
|
if host.name not in self._tqm._unreachable_hosts:
|
|
hosts_left.append(host)
|
|
return hosts_left
|
|
|
|
def update_active_connections(self, results):
|
|
''' updates the current active persistent connections '''
|
|
for r in results:
|
|
if 'args' in r._task_fields:
|
|
socket_path = r._task_fields['args'].get('_ansible_socket')
|
|
if socket_path:
|
|
if r._host not in self._active_connections:
|
|
self._active_connections[r._host] = socket_path
|
|
|
|
|
|
class NextAction(object):
|
|
""" The next action after an interpreter's exit. """
|
|
REDO = 1
|
|
CONTINUE = 2
|
|
EXIT = 3
|
|
|
|
def __init__(self, result=EXIT):
|
|
self.result = result
|
|
|
|
|
|
class Debugger(cmd.Cmd):
|
|
prompt_continuous = '> ' # multiple lines
|
|
|
|
def __init__(self, task, host, task_vars, play_context, result, next_action):
|
|
# cmd.Cmd is old-style class
|
|
cmd.Cmd.__init__(self)
|
|
|
|
self.prompt = '[%s] %s (debug)> ' % (host, task)
|
|
self.intro = None
|
|
self.scope = {}
|
|
self.scope['task'] = task
|
|
self.scope['task_vars'] = task_vars
|
|
self.scope['host'] = host
|
|
self.scope['play_context'] = play_context
|
|
self.scope['result'] = result
|
|
self.next_action = next_action
|
|
|
|
def cmdloop(self):
|
|
try:
|
|
cmd.Cmd.cmdloop(self)
|
|
except KeyboardInterrupt:
|
|
pass
|
|
|
|
do_h = cmd.Cmd.do_help
|
|
|
|
def do_EOF(self, args):
|
|
"""Quit"""
|
|
return self.do_quit(args)
|
|
|
|
def do_quit(self, args):
|
|
"""Quit"""
|
|
display.display('User interrupted execution')
|
|
self.next_action.result = NextAction.EXIT
|
|
return True
|
|
|
|
do_q = do_quit
|
|
|
|
def do_continue(self, args):
|
|
"""Continue to next result"""
|
|
self.next_action.result = NextAction.CONTINUE
|
|
return True
|
|
|
|
do_c = do_continue
|
|
|
|
def do_redo(self, args):
|
|
"""Schedule task for re-execution. The re-execution may not be the next result"""
|
|
self.next_action.result = NextAction.REDO
|
|
return True
|
|
|
|
do_r = do_redo
|
|
|
|
def evaluate(self, args):
|
|
try:
|
|
return eval(args, globals(), self.scope)
|
|
except Exception:
|
|
t, v = sys.exc_info()[:2]
|
|
if isinstance(t, str):
|
|
exc_type_name = t
|
|
else:
|
|
exc_type_name = t.__name__
|
|
display.display('***%s:%s' % (exc_type_name, repr(v)))
|
|
raise
|
|
|
|
def do_pprint(self, args):
|
|
"""Pretty Print"""
|
|
try:
|
|
result = self.evaluate(args)
|
|
display.display(pprint.pformat(result))
|
|
except Exception:
|
|
pass
|
|
|
|
do_p = do_pprint
|
|
|
|
def execute(self, args):
|
|
try:
|
|
code = compile(args + '\n', '<stdin>', 'single')
|
|
exec(code, globals(), self.scope)
|
|
except Exception:
|
|
t, v = sys.exc_info()[:2]
|
|
if isinstance(t, str):
|
|
exc_type_name = t
|
|
else:
|
|
exc_type_name = t.__name__
|
|
display.display('***%s:%s' % (exc_type_name, repr(v)))
|
|
raise
|
|
|
|
def default(self, line):
|
|
try:
|
|
self.execute(line)
|
|
except Exception:
|
|
pass
|