1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
# Copyright (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
DOCUMENTATION = '''
name: yaml
version_added: "2.4"
short_description: Uses a specific YAML file as an inventory source.
description:
- "YAML-based inventory, should start with the C(all) group and contain hosts/vars/children entries."
- Host entries can have sub-entries defined, which will be treated as variables.
- Vars entries are normal group vars.
- "Children are 'child groups', which can also have their own vars/hosts/children and so on."
- File MUST have a valid extension, defined in configuration.
notes:
- If you want to set vars for the C(all) group inside the inventory file, the C(all) group must be the first entry in the file.
- Enabled in configuration by default.
options:
yaml_extensions:
description: list of 'valid' extensions for files containing YAML
type: list
default: ['.yaml', '.yml', '.json']
env:
- name: ANSIBLE_YAML_FILENAME_EXT
- name: ANSIBLE_INVENTORY_PLUGIN_EXTS
ini:
- key: yaml_valid_extensions
section: defaults
- section: inventory_plugin_yaml
key: yaml_valid_extensions
'''
EXAMPLES = '''
all: # keys must be unique, i.e. only one 'hosts' per group
hosts:
test1:
test2:
host_var: value
vars:
group_all_var: value
children: # key order does not matter, indentation does
other_group:
children:
group_x:
hosts:
test5 # Note that one machine will work without a colon
#group_x:
# hosts:
# test5 # But this won't
# test7 #
group_y:
hosts:
test6: # So always use a colon
vars:
g2_var2: value3
hosts:
test4:
ansible_host: 127.0.0.1
last_group:
hosts:
test1 # same host as above, additional group membership
vars:
group_last_var: value
'''
import os
from ansible.errors import AnsibleError, AnsibleParserError
from ansible.module_utils.six import string_types
from ansible.module_utils._text import to_native, to_text
from ansible.module_utils.common._collections_compat import MutableMapping
from ansible.plugins.inventory import BaseFileInventoryPlugin
NoneType = type(None)
class InventoryModule(BaseFileInventoryPlugin):
NAME = 'yaml'
def __init__(self):
super(InventoryModule, self).__init__()
def verify_file(self, path):
valid = False
if super(InventoryModule, self).verify_file(path):
file_name, ext = os.path.splitext(path)
if not ext or ext in self.get_option('yaml_extensions'):
valid = True
return valid
def parse(self, inventory, loader, path, cache=True):
''' parses the inventory file '''
super(InventoryModule, self).parse(inventory, loader, path)
self.set_options()
try:
data = self.loader.load_from_file(path, cache=False)
except Exception as e:
raise AnsibleParserError(e)
if not data:
raise AnsibleParserError('Parsed empty YAML file')
elif not isinstance(data, MutableMapping):
raise AnsibleParserError('YAML inventory has invalid structure, it should be a dictionary, got: %s' % type(data))
elif data.get('plugin'):
raise AnsibleParserError('Plugin configuration YAML file, not YAML inventory')
# We expect top level keys to correspond to groups, iterate over them
# to get host, vars and subgroups (which we iterate over recursivelly)
if isinstance(data, MutableMapping):
for group_name in data:
self._parse_group(group_name, data[group_name])
else:
raise AnsibleParserError("Invalid data from file, expected dictionary and got:\n\n%s" % to_native(data))
def _parse_group(self, group, group_data):
if isinstance(group_data, (MutableMapping, NoneType)): # type: ignore[misc]
try:
group = self.inventory.add_group(group)
except AnsibleError as e:
raise AnsibleParserError("Unable to add group %s: %s" % (group, to_text(e)))
if group_data is not None:
# make sure they are dicts
for section in ['vars', 'children', 'hosts']:
if section in group_data:
# convert strings to dicts as these are allowed
if isinstance(group_data[section], string_types):
group_data[section] = {group_data[section]: None}
if not isinstance(group_data[section], (MutableMapping, NoneType)): # type: ignore[misc]
raise AnsibleParserError('Invalid "%s" entry for "%s" group, requires a dictionary, found "%s" instead.' %
(section, group, type(group_data[section])))
for key in group_data:
if not isinstance(group_data[key], (MutableMapping, NoneType)): # type: ignore[misc]
self.display.warning('Skipping key (%s) in group (%s) as it is not a mapping, it is a %s' % (key, group, type(group_data[key])))
continue
if isinstance(group_data[key], NoneType): # type: ignore[misc]
self.display.vvv('Skipping empty key (%s) in group (%s)' % (key, group))
elif key == 'vars':
for var in group_data[key]:
self.inventory.set_variable(group, var, group_data[key][var])
elif key == 'children':
for subgroup in group_data[key]:
subgroup = self._parse_group(subgroup, group_data[key][subgroup])
self.inventory.add_child(group, subgroup)
elif key == 'hosts':
for host_pattern in group_data[key]:
hosts, port = self._parse_host(host_pattern)
self._populate_host_vars(hosts, group_data[key][host_pattern] or {}, group, port)
else:
self.display.warning('Skipping unexpected key (%s) in group (%s), only "vars", "children" and "hosts" are valid' % (key, group))
else:
self.display.warning("Skipping '%s' as this is not a valid group definition" % group)
return group
def _parse_host(self, host_pattern):
'''
Each host key can be a pattern, try to process it and add variables as needed
'''
(hostnames, port) = self._expand_hostpattern(host_pattern)
return hostnames, port
|