ansible/lib/ansible/cli/playbook.py
James Cammarata ff9f5d7dc8 Starting to add additional unit tests for VariableManager
Required some rewiring in inventory code to make sure we're using
the DataLoader class for some data file operations, which makes mocking
them much easier.

Also identified two corner cases not currently handled by the code, related
to inventory variable sources and which one "wins". Also noticed we weren't
properly merging variables from multiple group/host_var file locations
(inventory directory vs. playbook directory locations) so fixed as well.
2015-09-04 16:41:38 -04:00

184 lines
7.6 KiB
Python

#!/usr/bin/env python
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.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/>.
########################################################
import os
import stat
from ansible.cli import CLI
from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.executor.playbook_executor import PlaybookExecutor
from ansible.inventory import Inventory
from ansible.parsing import DataLoader
from ansible.utils.vars import load_extra_vars
from ansible.vars import VariableManager
#---------------------------------------------------------------------------------------------------
class PlaybookCLI(CLI):
''' code behind ansible playbook cli'''
def parse(self):
# create parser for CLI options
parser = CLI.base_parser(
usage = "%prog playbook.yml",
connect_opts=True,
meta_opts=True,
runas_opts=True,
subset_opts=True,
check_opts=True,
inventory_opts=True,
runtask_opts=True,
vault_opts=True,
fork_opts=True,
module_opts=True,
)
# ansible playbook specific opts
parser.add_option('--list-tasks', dest='listtasks', action='store_true',
help="list all tasks that would be executed")
parser.add_option('--list-tags', dest='listtags', action='store_true',
help="list all available tags")
parser.add_option('--step', dest='step', action='store_true',
help="one-step-at-a-time: confirm each task before running")
parser.add_option('--start-at-task', dest='start_at_task',
help="start the playbook at the task matching this name")
self.options, self.args = parser.parse_args()
self.parser = parser
if len(self.args) == 0:
raise AnsibleOptionsError("You must specify a playbook file to run")
self.display.verbosity = self.options.verbosity
self.validate_conflicts(runas_opts=True, vault_opts=True, fork_opts=True)
def run(self):
super(PlaybookCLI, self).run()
# Note: slightly wrong, this is written so that implicit localhost
# Manage passwords
sshpass = None
becomepass = None
vault_pass = None
passwords = {}
# don't deal with privilege escalation or passwords when we don't need to
if not self.options.listhosts and not self.options.listtasks and not self.options.listtags and not self.options.syntax:
self.normalize_become_options()
(sshpass, becomepass) = self.ask_passwords()
passwords = { 'conn_pass': sshpass, 'become_pass': becomepass }
loader = DataLoader()
if self.options.vault_password_file:
# read vault_pass from a file
vault_pass = CLI.read_vault_password_file(self.options.vault_password_file, loader=loader)
loader.set_vault_password(vault_pass)
elif self.options.ask_vault_pass:
vault_pass = self.ask_vault_passwords(ask_vault_pass=True, ask_new_vault_pass=False, confirm_new=False)[0]
loader.set_vault_password(vault_pass)
# initial error check, to make sure all specified playbooks are accessible
# before we start running anything through the playbook executor
for playbook in self.args:
if not os.path.exists(playbook):
raise AnsibleError("the playbook: %s could not be found" % playbook)
if not (os.path.isfile(playbook) or stat.S_ISFIFO(os.stat(playbook).st_mode)):
raise AnsibleError("the playbook: %s does not appear to be a file" % playbook)
# create the variable manager, which will be shared throughout
# the code, ensuring a consistent view of global variables
variable_manager = VariableManager()
variable_manager.extra_vars = load_extra_vars(loader=loader, options=self.options)
# create the inventory, and filter it based on the subset specified (if any)
inventory = Inventory(loader=loader, variable_manager=variable_manager, host_list=self.options.inventory)
variable_manager.set_inventory(inventory)
# (which is not returned in list_hosts()) is taken into account for
# warning if inventory is empty. But it can't be taken into account for
# checking if limit doesn't match any hosts. Instead we don't worry about
# limit if only implicit localhost was in inventory to start with.
#
# Fix this when we rewrite inventory by making localhost a real host (and thus show up in list_hosts())
no_hosts = False
if len(inventory.list_hosts()) == 0:
# Empty inventory
self.display.warning("provided hosts list is empty, only localhost is available")
no_hosts = True
inventory.subset(self.options.subset)
if len(inventory.list_hosts()) == 0 and no_hosts is False:
# Invalid limit
raise AnsibleError("Specified --limit does not match any hosts")
# create the playbook executor, which manages running the plays via a task queue manager
pbex = PlaybookExecutor(playbooks=self.args, inventory=inventory, variable_manager=variable_manager, loader=loader, display=self.display, options=self.options, passwords=passwords)
results = pbex.run()
if isinstance(results, list):
for p in results:
self.display.display('\nplaybook: %s' % p['playbook'])
i = 1
for play in p['plays']:
if play.name:
playname = play.name
else:
playname = '#' + str(i)
msg = "\n PLAY: %s" % (playname)
mytags = set()
if self.options.listtags and play.tags:
mytags = mytags.union(set(play.tags))
msg += ' TAGS: [%s]' % (','.join(mytags))
if self.options.listhosts:
playhosts = set(inventory.get_hosts(play.hosts))
msg += "\n pattern: %s\n hosts (%d):" % (play.hosts, len(playhosts))
for host in playhosts:
msg += "\n %s" % host
self.display.display(msg)
if self.options.listtags or self.options.listtasks:
taskmsg = ' tasks:'
for block in play.compile():
if not block.has_tasks():
continue
j = 1
for task in block.block:
taskmsg += "\n %s" % task
if self.options.listtags and task.tags:
taskmsg += " TAGS: [%s]" % ','.join(mytags.union(set(task.tags)))
j = j + 1
self.display.display(taskmsg)
i = i + 1
return 0
else:
return results