Merge pull request #14824 from bcoca/ansible_shell

draft 1st release of ansible shell
pull/14888/head
Brian Coca 9 years ago
commit d7bd5fc075

@ -6,6 +6,7 @@ Ansible Changes By Release
###Major Changes:
* added facility for modules to send back 'diff' for display when ansible is called with --diff, updated several modules to return this info
* added ansible-console tool, a REPL shell that allows running adhoc tasks against a chosen inventory (based on https://github.com/dominis/ansible-shell )
####New Modules:
* aws: ec2_vol_facts

@ -279,6 +279,7 @@
#special_context_filesystems=nfs,vboxsf,fuse,ramfs
[colors]
#higlight = white
#verbose = blue
#warn = bright purple
#error = red

@ -0,0 +1,444 @@
# (c) 2014, Nandor Sivok <dominis@haxor.hu>
# (c) 2016, Redhat Inc
#
# ansible-shell 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-shell 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
########################################################
# ansible-console is an interactive REPL shell for ansible
# with built-in tab completion for all the documented modules
#
# Available commands:
# cd - change host/group (you can use host patterns eg.: app*.dc*:!app01*)
# list - list available hosts in the current path
# forks - change fork
# become - become
# ! - forces shell module instead of the ansible module (!yum update -y)
import atexit
import cmd
import getpass
import readline
import os
import sys
from ansible import constants as C
from ansible.cli import CLI
from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.executor.task_queue_manager import TaskQueueManager
from ansible.inventory import Inventory
from ansible.parsing.dataloader import DataLoader
from ansible.parsing.splitter import parse_kv
from ansible.playbook.play import Play
from ansible.vars import VariableManager
from ansible.utils import module_docs
from ansible.utils.color import stringc
from ansible.utils.unicode import to_unicode, to_str
from ansible.plugins import module_loader
try:
from __main__ import display
except ImportError:
from ansible.utils.display import Display
display = Display()
class ConsoleCLI(CLI, cmd.Cmd):
modules = []
def __init__(self, args):
super(ConsoleCLI, self).__init__(args)
self.intro = 'Welcome to the ansible console.\nType help or ? to list commands.\n'
self.groups = []
self.hosts = []
self.pattern = None
self.variable_manager = None
self.loader = None
self.passwords = dict()
self.modules = None
cmd.Cmd.__init__(self)
def parse(self):
self.parser = CLI.base_parser(
usage='%prog <host-pattern> [options]',
runas_opts=True,
inventory_opts=True,
connect_opts=True,
check_opts=True,
vault_opts=True,
fork_opts=True,
module_opts=True,
)
# options unique to shell
self.parser.add_option('--step', dest='step', action='store_true',
help="one-step-at-a-time: confirm each task before running")
self.parser.set_defaults(cwd='*')
self.options, self.args = self.parser.parse_args(self.args[1:])
display.verbosity = self.options.verbosity
self.validate_conflicts(runas_opts=True, vault_opts=True, fork_opts=True)
return True
def get_names(self):
return dir(self)
def cmdloop(self):
try:
cmd.Cmd.cmdloop(self)
except KeyboardInterrupt:
self.do_exit(self)
def set_prompt(self):
login_user = self.options.remote_user or getpass.getuser()
self.selected = self.inventory.list_hosts(self.options.cwd)
prompt = "%s@%s (%d)[f:%s]" % (login_user, self.options.cwd, len(self.selected), self.options.forks)
if self.options.become and self.options.become_user in [None, 'root']:
prompt += "# "
color = C.COLOR_ERROR
else:
prompt += "$ "
color = C.COLOR_HIGHLIGHT
self.prompt = stringc(prompt, color)
def list_modules(self):
modules = set()
if self.options.module_path is not None:
for i in self.options.module_path.split(os.pathsep):
module_loader.add_directory(i)
module_paths = module_loader._get_paths()
for path in module_paths:
if path is not None:
modules.update(self._find_modules_in_path(path))
return modules
def _find_modules_in_path(self, path):
if os.path.isdir(path):
for module in os.listdir(path):
if module.startswith('.'):
continue
elif os.path.isdir(module):
self._find_modules_in_path(module)
elif module.startswith('__'):
continue
elif any(module.endswith(x) for x in C.BLACKLIST_EXTS):
continue
elif module in C.IGNORE_FILES:
continue
elif module.startswith('_'):
fullpath = '/'.join([path,module])
if os.path.islink(fullpath): # avoids aliases
continue
module = module.replace('_', '', 1)
module = os.path.splitext(module)[0] # removes the extension
yield module
def default(self, arg, forceshell=False):
""" actually runs modules """
if arg.startswith("#"):
return False
if not self.options.cwd:
display.error("No host found")
return False
if arg.split()[0] in self.modules:
module = arg.split()[0]
module_args = ' '.join(arg.split()[1:])
else:
module = 'shell'
module_args = arg
if forceshell is True:
module = 'shell'
module_args = arg
self.options.module_name = module
result = None
try:
play_ds = dict(
name = "Ansible Shell",
hosts = self.options.cwd,
gather_facts = 'no',
#tasks = [ dict(action=dict(module=module, args=parse_kv(module_args)), async=self.options.async, poll=self.options.poll_interval) ]
tasks = [ dict(action=dict(module=module, args=parse_kv(module_args)))]
)
play = Play().load(play_ds, variable_manager=self.variable_manager, loader=self.loader)
except Exception as e:
display.error(u"Unable to build command: %s" % to_unicode(e))
return False
try:
cb = 'minimal' #FIXME: make callbacks configurable
# now create a task queue manager to execute the play
self._tqm = None
try:
self._tqm = TaskQueueManager(
inventory=self.inventory,
variable_manager=self.variable_manager,
loader=self.loader,
options=self.options,
passwords=self.passwords,
stdout_callback=cb,
run_additional_callbacks=C.DEFAULT_LOAD_CALLBACK_PLUGINS,
run_tree=False,
)
result = self._tqm.run(play)
finally:
if self._tqm:
self._tqm.cleanup()
if result is None:
display.error("No hosts found")
return False
except KeyboardInterrupt:
display.error('User interrupted execution')
return False
except Exception as e:
display.error(to_unicode(e))
#FIXME: add traceback in very very verbose mode
return False
def emptyline(self):
return
def do_shell(self, arg):
"""
You can run shell commands through the shell module.
eg.:
shell ps uax | grep java | wc -l
shell killall python
shell halt -n
You can use the ! to force the shell module. eg.:
!ps aux | grep java | wc -l
"""
self.default(arg, True)
def do_forks(self, arg):
"""Set the number of forks"""
if not arg:
display.display('Usage: forks <number>')
return
self.options.forks = int(arg)
self.set_prompt()
do_serial = do_forks
def do_verbosity(self, arg):
"""Set verbosity level"""
if not arg:
display.display('Usage: verbosity <number>')
else:
display.verbosity = int(arg)
display.v('verbosity level set to %s' % arg)
def do_cd(self, arg):
"""
Change active host/group. You can use hosts patterns as well eg.:
cd webservers
cd webservers:dbservers
cd webservers:!phoenix
cd webservers:&staging
cd webservers:dbservers:&staging:!phoenix
"""
if not arg:
self.options.cwd = '*'
elif arg == '..':
try:
self.options.cwd = self.inventory.groups_for_host(self.options.cwd)[1].name
except Exception:
self.options.cwd = ''
elif arg in '/*':
self.options.cwd = 'all'
elif self.inventory.get_hosts(arg):
self.options.cwd = arg
else:
display.display("no host matched")
self.set_prompt()
def do_list(self, arg):
"""List the hosts in the current group"""
if arg == 'groups':
for group in self.groups:
display.display(group)
else:
for host in self.selected:
display.display(host.name)
def do_become(self, arg):
"""Toggle whether plays run with become"""
if arg:
self.options.become_user = arg
display.v("become changed to %s" % self.options.become)
self.set_prompt()
else:
display.display("Please specify become value, e.g. `become yes`")
def do_remote_user(self, arg):
"""Given a username, set the remote user plays are run by"""
if arg:
self.options.remote_user = arg
self.set_prompt()
else:
display.display("Please specify a remote user, e.g. `remote_user root`")
def do_become_user(self, arg):
"""Given a username, set the user that plays are run by when using become"""
if arg:
self.options.become_user = arg
else:
display.display("Please specify a user, e.g. `become_user jenkins`")
display.v("Current user is %s" % self.options.become_user)
self.set_prompt()
def do_become_method(self, arg):
"""Given a become_method, set the privilege escalation method when using become"""
if arg:
self.options.become_method = arg
display.v("become_method changed to %s" % self.options.become_method)
else:
display.display("Please specify a become_method, e.g. `become_method su`")
def do_exit(self, args):
"""Exits from the console"""
sys.stdout.write('\n')
return -1
do_EOF = do_exit
def helpdefault(self, module_name):
if module_name in self.modules:
in_path = module_loader.find_plugin(module_name)
if in_path:
oc, a, _ = module_docs.get_docstring(in_path)
if oc:
display.display(oc['short_description'])
display.display('Parameters:')
for opt in oc['options'].keys():
display.display(' ' + stringc(opt, C.COLOR_HIGHLIGHT) + ' ' + oc['options'][opt]['description'][0])
else:
display.error('No documentation found for %s.' % module_name)
else:
display.error('%s is not a valid command, use ? to list all valid commands.' % module_name)
def complete_cd(self, text, line, begidx, endidx):
mline = line.partition(' ')[2]
offs = len(mline) - len(text)
if self.options.cwd in ('all','*','\\'):
completions = self.hosts + self.groups
else:
completions = [x.name for x in self.inventory.list_hosts(self.options.cwd)]
return [to_str(s)[offs:] for s in completions if to_str(s).startswith(to_str(mline))]
def completedefault(self, text, line, begidx, endidx):
if line.split()[0] in self.modules:
mline = line.split(' ')[-1]
offs = len(mline) - len(text)
completions = self.module_args(line.split()[0])
return [s[offs:] + '=' for s in completions if s.startswith(mline)]
def module_args(self, module_name):
in_path = module_loader.find_plugin(module_name)
oc, a, _ = module_docs.get_docstring(in_path)
return oc['options'].keys()
def run(self):
super(ConsoleCLI, self).run()
sshpass = None
becomepass = None
vault_pass = None
# hosts
if len(self.args) != 1:
self.pattern = 'all'
else:
self.pattern = self.args[0]
self.options.cwd = self.pattern
# dynamically add modules as commands
self.modules = self.list_modules()
for module in self.modules:
setattr(self, 'do_' + module, lambda arg, module=module: self.default(module + ' ' + arg))
setattr(self, 'help_' + module, lambda module=module: self.helpdefault(module))
self.normalize_become_options()
(sshpass, becomepass) = self.ask_passwords()
self.passwords = { 'conn_pass': sshpass, 'become_pass': becomepass }
self.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=self.loader)
self.loader.set_vault_password(vault_pass)
elif self.options.ask_vault_pass:
vault_pass = self.ask_vault_passwords()[0]
self.loader.set_vault_password(vault_pass)
self.variable_manager = VariableManager()
self.inventory = Inventory(loader=self.loader, variable_manager=self.variable_manager, host_list=self.options.inventory)
self.variable_manager.set_inventory(self.inventory)
if len(self.inventory.list_hosts(self.pattern)) == 0:
# Empty inventory
display.warning("provided hosts list is empty, only localhost is available")
self.inventory.subset(self.options.subset)
self.groups = self.inventory.list_groups()
self.hosts = [x.name for x in self.inventory.list_hosts(self.pattern)]
# This hack is to work around readline issues on a mac:
# http://stackoverflow.com/a/7116997/541202
if 'libedit' in readline.__doc__:
readline.parse_and_bind("bind ^I rl_complete")
else:
readline.parse_and_bind("tab: complete")
histfile = os.path.join(os.path.expanduser("~"), ".ansible-console_history")
try:
readline.read_history_file(histfile)
except IOError:
pass
atexit.register(readline.write_history_file, histfile)
self.set_prompt()
self.cmdloop()

@ -274,6 +274,7 @@ DEFAULT_PASSWORD_CHARS = ascii_letters + digits + ".,:-_"
STRING_TYPE_FILTERS = get_config(p, 'jinja2', 'dont_type_filters', 'ANSIBLE_STRING_TYPE_FILTERS', ['string', 'to_json', 'to_nice_json', 'to_yaml', 'ppretty', 'json'], islist=True )
# colors
COLOR_HIGHLIGHT = get_config(p, 'colors', 'highlight', 'ANSIBLE_COLOR_HIGHLIGHT', 'white')
COLOR_VERBOSE = get_config(p, 'colors', 'verbose', 'ANSIBLE_COLOR_VERBOSE', 'blue')
COLOR_WARN = get_config(p, 'colors', 'warn', 'ANSIBLE_COLOR_WARN', 'bright purple')
COLOR_ERROR = get_config(p, 'colors', 'error', 'ANSIBLE_COLOR_ERROR', 'red')

@ -49,6 +49,7 @@ setup(name='ansible',
'bin/ansible-pull',
'bin/ansible-doc',
'bin/ansible-galaxy',
'bin/ansible-shell',
'bin/ansible-vault',
],
data_files=[],

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