ansible-later/testenv/lib/python2.7/site-packages/ansible/cli/inventory.py
2019-04-23 13:04:27 +02:00

386 lines
14 KiB
Python

# (c) 2017, Brian Coca <bcoca@ansible.com>
#
# 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 optparse
from operator import attrgetter
from ansible import constants as C
from ansible.cli import CLI
from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.inventory.host import Host
from ansible.plugins.loader import vars_loader
from ansible.parsing.dataloader import DataLoader
from ansible.utils.vars import combine_vars
try:
from __main__ import display
except ImportError:
from ansible.utils.display import Display
display = Display()
INTERNAL_VARS = frozenset(['ansible_diff_mode',
'ansible_facts',
'ansible_forks',
'ansible_inventory_sources',
'ansible_limit',
'ansible_playbook_python',
'ansible_run_tags',
'ansible_skip_tags',
'ansible_verbosity',
'ansible_version',
'inventory_dir',
'inventory_file',
'inventory_hostname',
'inventory_hostname_short',
'groups',
'group_names',
'omit',
'playbook_dir', ])
class InventoryCLI(CLI):
''' used to display or dump the configured inventory as Ansible sees it '''
ARGUMENTS = {'host': 'The name of a host to match in the inventory, relevant when using --list',
'group': 'The name of a group in the inventory, relevant when using --graph', }
def __init__(self, args):
super(InventoryCLI, self).__init__(args)
self.vm = None
self.loader = None
self.inventory = None
self._new_api = True
def parse(self):
self.parser = CLI.base_parser(
usage='usage: %prog [options] [host|group]',
epilog='Show Ansible inventory information, by default it uses the inventory script JSON format',
inventory_opts=True,
vault_opts=True,
basedir_opts=True,
)
# remove unused default options
self.parser.remove_option('--limit')
self.parser.remove_option('--list-hosts')
# Actions
action_group = optparse.OptionGroup(self.parser, "Actions", "One of following must be used on invocation, ONLY ONE!")
action_group.add_option("--list", action="store_true", default=False, dest='list', help='Output all hosts info, works as inventory script')
action_group.add_option("--host", action="store", default=None, dest='host', help='Output specific host info, works as inventory script')
action_group.add_option("--graph", action="store_true", default=False, dest='graph',
help='create inventory graph, if supplying pattern it must be a valid group name')
self.parser.add_option_group(action_group)
# graph
self.parser.add_option("-y", "--yaml", action="store_true", default=False, dest='yaml',
help='Use YAML format instead of default JSON, ignored for --graph')
self.parser.add_option("--vars", action="store_true", default=False, dest='show_vars',
help='Add vars to graph display, ignored unless used with --graph')
# list
self.parser.add_option("--export", action="store_true", default=C.INVENTORY_EXPORT, dest='export',
help="When doing an --list, represent in a way that is optimized for export,"
"not as an accurate representation of how Ansible has processed it")
# self.parser.add_option("--ignore-vars-plugins", action="store_true", default=False, dest='ignore_vars_plugins',
# help="When doing an --list, skip vars data from vars plugins, by default, this would include group_vars/ and host_vars/")
super(InventoryCLI, self).parse()
display.verbosity = self.options.verbosity
self.validate_conflicts(vault_opts=True)
# there can be only one! and, at least, one!
used = 0
for opt in (self.options.list, self.options.host, self.options.graph):
if opt:
used += 1
if used == 0:
raise AnsibleOptionsError("No action selected, at least one of --host, --graph or --list needs to be specified.")
elif used > 1:
raise AnsibleOptionsError("Conflicting options used, only one of --host, --graph or --list can be used at the same time.")
# set host pattern to default if not supplied
if len(self.args) > 0:
self.options.pattern = self.args[0]
else:
self.options.pattern = 'all'
def run(self):
results = None
super(InventoryCLI, self).run()
# Initialize needed objects
if getattr(self, '_play_prereqs', False):
self.loader, self.inventory, self.vm = self._play_prereqs(self.options)
else:
# fallback to pre 2.4 way of initialzing
from ansible.vars import VariableManager
from ansible.inventory import Inventory
self._new_api = False
self.loader = DataLoader()
self.vm = VariableManager()
# use vault if needed
if self.options.vault_password_file:
vault_pass = CLI.read_vault_password_file(self.options.vault_password_file, loader=self.loader)
elif self.options.ask_vault_pass:
vault_pass = self.ask_vault_passwords()
else:
vault_pass = None
if vault_pass:
self.loader.set_vault_password(vault_pass)
# actually get inventory and vars
self.inventory = Inventory(loader=self.loader, variable_manager=self.vm, host_list=self.options.inventory)
self.vm.set_inventory(self.inventory)
if self.options.host:
hosts = self.inventory.get_hosts(self.options.host)
if len(hosts) != 1:
raise AnsibleOptionsError("You must pass a single valid host to --host parameter")
myvars = self._get_host_variables(host=hosts[0])
self._remove_internal(myvars)
# FIXME: should we template first?
results = self.dump(myvars)
elif self.options.graph:
results = self.inventory_graph()
elif self.options.list:
top = self._get_group('all')
if self.options.yaml:
results = self.yaml_inventory(top)
else:
results = self.json_inventory(top)
results = self.dump(results)
if results:
# FIXME: pager?
display.display(results)
exit(0)
exit(1)
def dump(self, stuff):
if self.options.yaml:
import yaml
from ansible.parsing.yaml.dumper import AnsibleDumper
results = yaml.dump(stuff, Dumper=AnsibleDumper, default_flow_style=False)
else:
import json
from ansible.parsing.ajson import AnsibleJSONEncoder
results = json.dumps(stuff, cls=AnsibleJSONEncoder, sort_keys=True, indent=4)
return results
# FIXME: refactor to use same for VM
def get_plugin_vars(self, path, entity):
data = {}
def _get_plugin_vars(plugin, path, entities):
data = {}
try:
data = plugin.get_vars(self.loader, path, entity)
except AttributeError:
try:
if isinstance(entity, Host):
data = combine_vars(data, plugin.get_host_vars(entity.name))
else:
data = combine_vars(data, plugin.get_group_vars(entity.name))
except AttributeError:
if hasattr(plugin, 'run'):
raise AnsibleError("Cannot use v1 type vars plugin %s from %s" % (plugin._load_name, plugin._original_path))
else:
raise AnsibleError("Invalid vars plugin %s from %s" % (plugin._load_name, plugin._original_path))
return data
for plugin in vars_loader.all():
data = combine_vars(data, _get_plugin_vars(plugin, path, entity))
return data
def _get_group_variables(self, group):
# get info from inventory source
res = group.get_vars()
# FIXME: add switch to skip vars plugins, add vars plugin info
for inventory_dir in self.inventory._sources:
res = combine_vars(res, self.get_plugin_vars(inventory_dir, group))
if group.priority != 1:
res['ansible_group_priority'] = group.priority
return res
def _get_host_variables(self, host):
if self.options.export:
hostvars = host.get_vars()
# FIXME: add switch to skip vars plugins
# add vars plugin info
for inventory_dir in self.inventory._sources:
hostvars = combine_vars(hostvars, self.get_plugin_vars(inventory_dir, host))
else:
if self._new_api:
hostvars = self.vm.get_vars(host=host, include_hostvars=False)
else:
hostvars = self.vm.get_vars(self.loader, host=host, include_hostvars=False)
return hostvars
def _get_group(self, gname):
if self._new_api:
group = self.inventory.groups.get(gname)
else:
group = self.inventory.get_group(gname)
return group
def _remove_internal(self, dump):
for internal in INTERNAL_VARS:
if internal in dump:
del dump[internal]
def _remove_empty(self, dump):
# remove empty keys
for x in ('hosts', 'vars', 'children'):
if x in dump and not dump[x]:
del dump[x]
def _show_vars(self, dump, depth):
result = []
self._remove_internal(dump)
if self.options.show_vars:
for (name, val) in sorted(dump.items()):
result.append(self._graph_name('{%s = %s}' % (name, val), depth))
return result
def _graph_name(self, name, depth=0):
if depth:
name = " |" * (depth) + "--%s" % name
return name
def _graph_group(self, group, depth=0):
result = [self._graph_name('@%s:' % group.name, depth)]
depth = depth + 1
for kid in sorted(group.child_groups, key=attrgetter('name')):
result.extend(self._graph_group(kid, depth))
if group.name != 'all':
for host in sorted(group.hosts, key=attrgetter('name')):
result.append(self._graph_name(host.name, depth))
result.extend(self._show_vars(host.get_vars(), depth + 1))
result.extend(self._show_vars(self._get_group_variables(group), depth))
return result
def inventory_graph(self):
start_at = self._get_group(self.options.pattern)
if start_at:
return '\n'.join(self._graph_group(start_at))
else:
raise AnsibleOptionsError("Pattern must be valid group name when using --graph")
def json_inventory(self, top):
def format_group(group):
results = {}
results[group.name] = {}
if group.name != 'all':
results[group.name]['hosts'] = [h.name for h in sorted(group.hosts, key=attrgetter('name'))]
results[group.name]['children'] = []
for subgroup in sorted(group.child_groups, key=attrgetter('name')):
results[group.name]['children'].append(subgroup.name)
results.update(format_group(subgroup))
if self.options.export:
results[group.name]['vars'] = self._get_group_variables(group)
self._remove_empty(results[group.name])
return results
results = format_group(top)
# populate meta
results['_meta'] = {'hostvars': {}}
hosts = self.inventory.get_hosts()
for host in hosts:
hvars = self._get_host_variables(host)
if hvars:
self._remove_internal(hvars)
results['_meta']['hostvars'][host.name] = hvars
return results
def yaml_inventory(self, top):
seen = []
def format_group(group):
results = {}
# initialize group + vars
results[group.name] = {}
# subgroups
results[group.name]['children'] = {}
for subgroup in sorted(group.child_groups, key=attrgetter('name')):
if subgroup.name != 'all':
results[group.name]['children'].update(format_group(subgroup))
# hosts for group
results[group.name]['hosts'] = {}
if group.name != 'all':
for h in sorted(group.hosts, key=attrgetter('name')):
myvars = {}
if h.name not in seen: # avoid defining host vars more than once
seen.append(h.name)
myvars = self._get_host_variables(host=h)
self._remove_internal(myvars)
results[group.name]['hosts'][h.name] = myvars
if self.options.export:
gvars = self._get_group_variables(group)
if gvars:
results[group.name]['vars'] = gvars
self._remove_empty(results[group.name])
return results
return format_group(top)