community.general/lib/ansible/plugins/action/pause.py

137 lines
5.4 KiB
Python

# Copyright 2012, Tim Bielawa <tbielawa@redhat.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import datetime
import sys
import time
from termios import tcflush, TCIFLUSH
from ansible.errors import *
from ansible.plugins.action import ActionBase
class ActionModule(ActionBase):
''' pauses execution for a length or time, or until input is received '''
PAUSE_TYPES = ['seconds', 'minutes', 'prompt', '']
BYPASS_HOST_LOOP = True
def run(self, tmp=None, task_vars=dict()):
''' run the pause action module '''
duration_unit = 'minutes'
prompt = None
seconds = None
result = dict(
changed = False,
rc = 0,
stderr = '',
stdout = '',
start = None,
stop = None,
delta = None,
)
# FIXME: not sure if we can get this info directly like this anymore?
#hosts = ', '.join(self.runner.host_set)
# Is 'args' empty, then this is the default prompted pause
if self._task.args is None or len(self._task.args.keys()) == 0:
pause_type = 'prompt'
#prompt = "[%s]\nPress enter to continue:\n" % hosts
prompt = "[%s]\nPress enter to continue:\n" % self._task.get_name().strip()
# Are 'minutes' or 'seconds' keys that exist in 'args'?
elif 'minutes' in self._task.args or 'seconds' in self._task.args:
try:
if 'minutes' in self._task.args:
pause_type = 'minutes'
# The time() command operates in seconds so we need to
# recalculate for minutes=X values.
seconds = int(self._task.args['minutes']) * 60
else:
pause_type = 'seconds'
seconds = int(self._task.args['seconds'])
duration_unit = 'seconds'
except ValueError as e:
return dict(failed=True, msg="non-integer value given for prompt duration:\n%s" % str(e))
# Is 'prompt' a key in 'args'?
elif 'prompt' in self._task.args:
pause_type = 'prompt'
#prompt = "[%s]\n%s:\n" % (hosts, self._task.args['prompt'])
prompt = "[%s]\n%s:\n" % (self._task.get_name().strip(), self._task.args['prompt'])
# I have no idea what you're trying to do. But it's so wrong.
else:
return dict(failed=True, msg="invalid pause type given. must be one of: %s" % ", ".join(self.PAUSE_TYPES))
#vv("created 'pause' ActionModule: pause_type=%s, duration_unit=%s, calculated_seconds=%s, prompt=%s" % \
# (self.pause_type, self.duration_unit, self.seconds, self.prompt))
########################################################################
# Begin the hard work!
start = time.time()
result['start'] = str(datetime.datetime.now())
# FIXME: this is all very broken right now, as prompting from the worker side
# is not really going to be supported, and actions marked as BYPASS_HOST_LOOP
# probably should not be run through the executor engine at all. Also, ctrl+c
# is now captured on the parent thread, so it can't be caught here via the
# KeyboardInterrupt exception.
try:
if not pause_type == 'prompt':
print("(^C-c = continue early, ^C-a = abort)")
#print("[%s]\nPausing for %s seconds" % (hosts, seconds))
print("[%s]\nPausing for %s seconds" % (self._task.get_name().strip(), seconds))
time.sleep(seconds)
else:
# Clear out any unflushed buffered input which would
# otherwise be consumed by raw_input() prematurely.
#tcflush(sys.stdin, TCIFLUSH)
result['user_input'] = raw_input(prompt.encode(sys.stdout.encoding))
except KeyboardInterrupt:
while True:
print('\nAction? (a)bort/(c)ontinue: ')
c = getch()
if c == 'c':
# continue playbook evaluation
break
elif c == 'a':
# abort further playbook evaluation
raise ae('user requested abort!')
finally:
duration = time.time() - start
result['stop'] = str(datetime.datetime.now())
result['delta'] = int(duration)
if duration_unit == 'minutes':
duration = round(duration / 60.0, 2)
else:
duration = round(duration, 2)
result['stdout'] = "Paused for %s %s" % (duration, duration_unit)
return result