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File Name : inventory.py

#!/usr/bin/env python
# Copyright: (c) 2017, Brian Coca <bcoca@ansible.com>
# Copyright: (c) 2018, Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
# PYTHON_ARGCOMPLETE_OK

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

# ansible.cli needs to be imported first, to ensure the source bin/* scripts run that code first
from ansible.cli import CLI

import sys

import argparse

from ansible import constants as C
from ansible import context
from ansible.cli.arguments import option_helpers as opt_help
from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.module_utils._text import to_bytes, to_native, to_text
from ansible.utils.vars import combine_vars
from ansible.utils.display import Display
from ansible.vars.plugins import get_vars_from_inventory_sources, get_vars_from_path

display = Display()

INTERNAL_VARS = frozenset(['ansible_diff_mode',
                           'ansible_config_file',
                           '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 '''

name = 'ansible-inventory'

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

def init_parser(self):
        super(InventoryCLI, self).init_parser(
            usage='usage: %prog [options] [host|group]',
            desc='Show Ansible inventory information, by default it uses the inventory script JSON format')

opt_help.add_inventory_options(self.parser)
        opt_help.add_vault_options(self.parser)
        opt_help.add_basedir_options(self.parser)
        opt_help.add_runtask_options(self.parser)

# remove unused default options
        self.parser.add_argument('-l', '--limit', help=argparse.SUPPRESS, action=opt_help.UnrecognizedArgument, nargs='?')
        self.parser.add_argument('--list-hosts', help=argparse.SUPPRESS, action=opt_help.UnrecognizedArgument)

self.parser.add_argument('args', metavar='host|group', nargs='?')

# Actions
        action_group = self.parser.add_argument_group("Actions", "One of following must be used on invocation, ONLY ONE!")
        action_group.add_argument("--list", action="store_true", default=False, dest='list', help='Output all hosts info, works as inventory script')
        action_group.add_argument("--host", action="store", default=None, dest='host', help='Output specific host info, works as inventory script')
        action_group.add_argument("--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_argument_group(action_group)

# graph
        self.parser.add_argument("-y", "--yaml", action="store_true", default=False, dest='yaml',
                                 help='Use YAML format instead of default JSON, ignored for --graph')
        self.parser.add_argument('--toml', action='store_true', default=False, dest='toml',
                                 help='Use TOML format instead of default JSON, ignored for --graph')
        self.parser.add_argument("--vars", action="store_true", default=False, dest='show_vars',
                                 help='Add vars to graph display, ignored unless used with --graph')

# list
        self.parser.add_argument("--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_argument('--output', default=None, dest='output_file',
                                 help="When doing --list, send the inventory to a file instead of to the screen")
        # self.parser.add_argument("--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/")

def post_process_args(self, options):
        options = super(InventoryCLI, self).post_process_args(options)

display.verbosity = options.verbosity
        self.validate_conflicts(options)

# there can be only one! and, at least, one!
        used = 0
        for opt in (options.list, options.host, 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 options.args:
            options.pattern = options.args
        else:
            options.pattern = 'all'

return options

def run(self):

super(InventoryCLI, self).run()

# Initialize needed objects
        self.loader, self.inventory, self.vm = self._play_prereqs()

results = None
        if context.CLIARGS['host']:
            hosts = self.inventory.get_hosts(context.CLIARGS['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])

# FIXME: should we template first?
            results = self.dump(myvars)

elif context.CLIARGS['graph']:
            results = self.inventory_graph()
        elif context.CLIARGS['list']:
            top = self._get_group('all')
            if context.CLIARGS['yaml']:
                results = self.yaml_inventory(top)
            elif context.CLIARGS['toml']:
                results = self.toml_inventory(top)
            else:
                results = self.json_inventory(top)
            results = self.dump(results)

if results:
            outfile = context.CLIARGS['output_file']
            if outfile is None:
                # FIXME: pager?
                display.display(results)
            else:
                try:
                    with open(to_bytes(outfile), 'wb') as f:
                        f.write(to_bytes(results))
                except (OSError, IOError) as e:
                    raise AnsibleError('Unable to write to destination file (%s): %s' % (to_native(outfile), to_native(e)))
            sys.exit(0)

sys.exit(1)

@staticmethod
    def dump(stuff):

if context.CLIARGS['yaml']:
            import yaml
            from ansible.parsing.yaml.dumper import AnsibleDumper
            results = to_text(yaml.dump(stuff, Dumper=AnsibleDumper, default_flow_style=False, allow_unicode=True))
        elif context.CLIARGS['toml']:
            from ansible.plugins.inventory.toml import toml_dumps
            try:
                results = toml_dumps(stuff)
            except TypeError as e:
                raise AnsibleError(
                    'The source inventory contains a value that cannot be represented in TOML: %s' % e
                )
            except KeyError as e:
                raise AnsibleError(
                    'The source inventory contains a non-string key (%s) which cannot be represented in TOML. '
                    'The specified key will need to be converted to a string. Be aware that if your playbooks '
                    'expect this key to be non-string, your playbooks will need to be modified to support this '
                    'change.' % e.args[0]
                )
        else:
            import json
            from ansible.parsing.ajson import AnsibleJSONEncoder
            try:
                results = json.dumps(stuff, cls=AnsibleJSONEncoder, sort_keys=True, indent=4, preprocess_unsafe=True, ensure_ascii=False)
            except TypeError as e:
                results = json.dumps(stuff, cls=AnsibleJSONEncoder, sort_keys=False, indent=4, preprocess_unsafe=True, ensure_ascii=False)
                display.warning("Could not sort JSON output due to issues while sorting keys: %s" % to_native(e))

return results

def _get_group_variables(self, group):

# get info from inventory source
        res = group.get_vars()

# Always load vars plugins
        res = combine_vars(res, get_vars_from_inventory_sources(self.loader, self.inventory._sources, [group], 'all'))
        if context.CLIARGS['basedir']:
            res = combine_vars(res, get_vars_from_path(self.loader, context.CLIARGS['basedir'], [group], 'all'))

if group.priority != 1:
            res['ansible_group_priority'] = group.priority

return self._remove_internal(res)

def _get_host_variables(self, host):

if context.CLIARGS['export']:
            # only get vars defined directly host
            hostvars = host.get_vars()

# Always load vars plugins
            hostvars = combine_vars(hostvars, get_vars_from_inventory_sources(self.loader, self.inventory._sources, [host], 'all'))
            if context.CLIARGS['basedir']:
                hostvars = combine_vars(hostvars, get_vars_from_path(self.loader, context.CLIARGS['basedir'], [host], 'all'))
        else:
            # get all vars flattened by host, but skip magic hostvars
            hostvars = self.vm.get_vars(host=host, include_hostvars=False, stage='all')

return self._remove_internal(hostvars)

def _get_group(self, gname):
        group = self.inventory.groups.get(gname)
        return group

@staticmethod
    def _remove_internal(dump):

for internal in INTERNAL_VARS:
            if internal in dump:
                del dump[internal]

return dump

@staticmethod
    def _remove_empty(dump):
        # remove empty keys
        for x in ('hosts', 'vars', 'children'):
            if x in dump and not dump[x]:
                del dump[x]

@staticmethod
    def _show_vars(dump, depth):
        result = []
        for (name, val) in sorted(dump.items()):
            result.append(InventoryCLI._graph_name('{%s = %s}' % (name, val), depth))
        return result

@staticmethod
    def _graph_name(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 group.child_groups:
            result.extend(self._graph_group(kid, depth))

if group.name != 'all':
            for host in group.hosts:
                result.append(self._graph_name(host.name, depth))
                if context.CLIARGS['show_vars']:
                    result.extend(self._show_vars(self._get_host_variables(host), depth + 1))

if context.CLIARGS['show_vars']:
            result.extend(self._show_vars(self._get_group_variables(group), depth))

return result

def inventory_graph(self):

start_at = self._get_group(context.CLIARGS['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):

seen = set()

def format_group(group):
            results = {}
            results[group.name] = {}
            if group.name != 'all':
                results[group.name]['hosts'] = [h.name for h in group.hosts]
            results[group.name]['children'] = []
            for subgroup in group.child_groups:
                results[group.name]['children'].append(subgroup.name)
                if subgroup.name not in seen:
                    results.update(format_group(subgroup))
                    seen.add(subgroup.name)
            if context.CLIARGS['export']:
                results[group.name]['vars'] = self._get_group_variables(group)

self._remove_empty(results[group.name])
            if not results[group.name]:
                del 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:
                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 group.child_groups:
                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 group.hosts:
                    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)
                    results[group.name]['hosts'][h.name] = myvars

if context.CLIARGS['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)

def toml_inventory(self, top):
        seen = set()
        has_ungrouped = bool(next(g.hosts for g in top.child_groups if g.name == 'ungrouped'))

def format_group(group):
            results = {}
            results[group.name] = {}

results[group.name]['children'] = []
            for subgroup in group.child_groups:
                if subgroup.name == 'ungrouped' and not has_ungrouped:
                    continue
                if group.name != 'all':
                    results[group.name]['children'].append(subgroup.name)
                results.update(format_group(subgroup))

if group.name != 'all':
                for host in group.hosts:
                    if host.name not in seen:
                        seen.add(host.name)
                        host_vars = self._get_host_variables(host=host)
                    else:
                        host_vars = {}
                    try:
                        results[group.name]['hosts'][host.name] = host_vars
                    except KeyError:
                        results[group.name]['hosts'] = {host.name: host_vars}

if context.CLIARGS['export']:
                results[group.name]['vars'] = self._get_group_variables(group)

self._remove_empty(results[group.name])
            if not results[group.name]:
                del results[group.name]

return results

results = format_group(top)

return results

def main(args=None):
    InventoryCLI.cli_executor(args)

if __name__ == '__main__':
    main()

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2025-08-03 05:05:20
..	dir	-	root/root	drwxr-xr-x	2025-08-03 05:05:20
__pycache__	dir	-	root/root	drwxr-xr-x	2025-08-03 05:05:20
arguments	dir	-	root/root	drwxr-xr-x	2025-08-03 05:05:20
scripts	dir	-	root/root	drwxr-xr-x	2025-08-03 05:05:20
__init__.py	text/x-python	27.3 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
adhoc.py	text/x-python	8.04 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
config.py	text/x-python	21.63 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
console.py	text/x-python	21.43 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
doc.py	text/x-python	59.02 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
galaxy.py	text/x-python	90.78 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
inventory.py	text/x-python	16.03 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
playbook.py	text/x-python	10.25 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
pull.py	text/x-python	16.63 KB	root/root	-rw-r--r--	2024-11-05 01:35:24
vault.py	text/x-python	21.88 KB	root/root	-rw-r--r--	2024-11-05 01:35:24