mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-18 10:50:40 +00:00
616 lines
24 KiB
Python
616 lines
24 KiB
Python
|
# (c) 2012-2014, 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/>.
|
||
|
|
|
||
|
|
#############################################
|
||
|
|
from __future__ import (absolute_import, division, print_function)
|
||
|
|
__metaclass__ = type
|
||
|
|
|
||
|
|
import fnmatch
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
import re
|
||
|
|
import itertools
|
||
|
|
import traceback
|
||
|
|
|
||
|
|
from operator import attrgetter
|
||
|
|
from random import shuffle
|
||
|
|
|
||
|
|
from ansible import constants as C
|
||
|
|
from ansible.errors import AnsibleError, AnsibleOptionsError, AnsibleParserError
|
||
|
|
from ansible.inventory.data import InventoryData
|
||
|
|
from ansible.module_utils.six import string_types
|
||
|
|
from ansible.module_utils._text import to_bytes, to_text
|
||
|
|
from ansible.parsing.utils.addresses import parse_address
|
||
|
|
from ansible.plugins.loader import inventory_loader
|
||
|
|
from ansible.utils.path import unfrackpath
|
||
|
|
|
||
|
|
try:
|
||
|
|
from __main__ import display
|
||
|
|
except ImportError:
|
||
|
|
from ansible.utils.display import Display
|
||
|
|
display = Display()
|
||
|
|
|
||
|
|
IGNORED_ALWAYS = [br"^\.", b"^host_vars$", b"^group_vars$", b"^vars_plugins$"]
|
||
|
|
IGNORED_PATTERNS = [to_bytes(x) for x in C.INVENTORY_IGNORE_PATTERNS]
|
||
|
|
IGNORED_EXTS = [b'%s$' % to_bytes(re.escape(x)) for x in C.INVENTORY_IGNORE_EXTS]
|
||
|
|
|
||
|
|
IGNORED = re.compile(b'|'.join(IGNORED_ALWAYS + IGNORED_PATTERNS + IGNORED_EXTS))
|
||
|
|
|
||
|
|
|
||
|
|
def order_patterns(patterns):
|
||
|
|
''' takes a list of patterns and reorders them by modifier to apply them consistently '''
|
||
|
|
|
||
|
|
# FIXME: this goes away if we apply patterns incrementally or by groups
|
||
|
|
pattern_regular = []
|
||
|
|
pattern_intersection = []
|
||
|
|
pattern_exclude = []
|
||
|
|
for p in patterns:
|
||
|
|
if p.startswith("!"):
|
||
|
|
pattern_exclude.append(p)
|
||
|
|
elif p.startswith("&"):
|
||
|
|
pattern_intersection.append(p)
|
||
|
|
elif p:
|
||
|
|
pattern_regular.append(p)
|
||
|
|
|
||
|
|
# if no regular pattern was given, hence only exclude and/or intersection
|
||
|
|
# make that magically work
|
||
|
|
if pattern_regular == []:
|
||
|
|
pattern_regular = ['all']
|
||
|
|
|
||
|
|
# when applying the host selectors, run those without the "&" or "!"
|
||
|
|
# first, then the &s, then the !s.
|
||
|
|
return pattern_regular + pattern_intersection + pattern_exclude
|
||
|
|
|
||
|
|
|
||
|
|
def split_host_pattern(pattern):
|
||
|
|
"""
|
||
|
|
Takes a string containing host patterns separated by commas (or a list
|
||
|
|
thereof) and returns a list of single patterns (which may not contain
|
||
|
|
commas). Whitespace is ignored.
|
||
|
|
|
||
|
|
Also accepts ':' as a separator for backwards compatibility, but it is
|
||
|
|
not recommended due to the conflict with IPv6 addresses and host ranges.
|
||
|
|
|
||
|
|
Example: 'a,b[1], c[2:3] , d' -> ['a', 'b[1]', 'c[2:3]', 'd']
|
||
|
|
"""
|
||
|
|
|
||
|
|
if isinstance(pattern, list):
|
||
|
|
return list(itertools.chain(*map(split_host_pattern, pattern)))
|
||
|
|
elif not isinstance(pattern, string_types):
|
||
|
|
pattern = to_text(pattern, errors='surrogate_or_strict')
|
||
|
|
|
||
|
|
# If it's got commas in it, we'll treat it as a straightforward
|
||
|
|
# comma-separated list of patterns.
|
||
|
|
if u',' in pattern:
|
||
|
|
patterns = pattern.split(u',')
|
||
|
|
|
||
|
|
# If it doesn't, it could still be a single pattern. This accounts for
|
||
|
|
# non-separator uses of colons: IPv6 addresses and [x:y] host ranges.
|
||
|
|
else:
|
||
|
|
try:
|
||
|
|
(base, port) = parse_address(pattern, allow_ranges=True)
|
||
|
|
patterns = [pattern]
|
||
|
|
except Exception:
|
||
|
|
# The only other case we accept is a ':'-separated list of patterns.
|
||
|
|
# This mishandles IPv6 addresses, and is retained only for backwards
|
||
|
|
# compatibility.
|
||
|
|
patterns = re.findall(
|
||
|
|
to_text(r'''(?: # We want to match something comprising:
|
||
|
|
[^\s:\[\]] # (anything other than whitespace or ':[]'
|
||
|
|
| # ...or...
|
||
|
|
\[[^\]]*\] # a single complete bracketed expression)
|
||
|
|
)+ # occurring once or more
|
||
|
|
'''), pattern, re.X
|
||
|
|
)
|
||
|
|
|
||
|
|
return [p.strip() for p in patterns]
|
||
|
|
|
||
|
|
|
||
|
|
class InventoryManager(object):
|
||
|
|
''' Creates and manages inventory '''
|
||
|
|
|
||
|
|
def __init__(self, loader, sources=None):
|
||
|
|
|
||
|
|
# base objects
|
||
|
|
self._loader = loader
|
||
|
|
self._inventory = InventoryData()
|
||
|
|
|
||
|
|
# a list of host(names) to contain current inquiries to
|
||
|
|
self._restriction = None
|
||
|
|
self._subset = None
|
||
|
|
|
||
|
|
# caches
|
||
|
|
self._hosts_patterns_cache = {} # resolved full patterns
|
||
|
|
self._pattern_cache = {} # resolved individual patterns
|
||
|
|
self._inventory_plugins = [] # for generating inventory
|
||
|
|
|
||
|
|
# the inventory dirs, files, script paths or lists of hosts
|
||
|
|
if sources is None:
|
||
|
|
self._sources = []
|
||
|
|
elif isinstance(sources, string_types):
|
||
|
|
self._sources = [sources]
|
||
|
|
else:
|
||
|
|
self._sources = sources
|
||
|
|
|
||
|
|
# get to work!
|
||
|
|
self.parse_sources(cache=True)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def localhost(self):
|
||
|
|
return self._inventory.localhost
|
||
|
|
|
||
|
|
@property
|
||
|
|
def groups(self):
|
||
|
|
return self._inventory.groups
|
||
|
|
|
||
|
|
@property
|
||
|
|
def hosts(self):
|
||
|
|
return self._inventory.hosts
|
||
|
|
|
||
|
|
def get_vars(self, *args, **kwargs):
|
||
|
|
return self._inventory.get_vars(args, kwargs)
|
||
|
|
|
||
|
|
def add_host(self, host, group=None, port=None):
|
||
|
|
return self._inventory.add_host(host, group, port)
|
||
|
|
|
||
|
|
def add_group(self, group):
|
||
|
|
return self._inventory.add_group(group)
|
||
|
|
|
||
|
|
def get_groups_dict(self):
|
||
|
|
return self._inventory.get_groups_dict()
|
||
|
|
|
||
|
|
def reconcile_inventory(self):
|
||
|
|
self.clear_caches()
|
||
|
|
return self._inventory.reconcile_inventory()
|
||
|
|
|
||
|
|
def get_host(self, hostname):
|
||
|
|
return self._inventory.get_host(hostname)
|
||
|
|
|
||
|
|
def _setup_inventory_plugins(self):
|
||
|
|
''' sets up loaded inventory plugins for usage '''
|
||
|
|
|
||
|
|
display.vvvv('setting up inventory plugins')
|
||
|
|
|
||
|
|
for name in C.INVENTORY_ENABLED:
|
||
|
|
plugin = inventory_loader.get(name)
|
||
|
|
if plugin:
|
||
|
|
self._inventory_plugins.append(plugin)
|
||
|
|
else:
|
||
|
|
display.warning('Failed to load inventory plugin, skipping %s' % name)
|
||
|
|
|
||
|
|
if not self._inventory_plugins:
|
||
|
|
raise AnsibleError("No inventory plugins available to generate inventory, make sure you have at least one whitelisted.")
|
||
|
|
|
||
|
|
def parse_sources(self, cache=False):
|
||
|
|
''' iterate over inventory sources and parse each one to populate it'''
|
||
|
|
|
||
|
|
self._setup_inventory_plugins()
|
||
|
|
|
||
|
|
parsed = False
|
||
|
|
# allow for multiple inventory parsing
|
||
|
|
for source in self._sources:
|
||
|
|
|
||
|
|
if source:
|
||
|
|
if ',' not in source:
|
||
|
|
source = unfrackpath(source, follow=False)
|
||
|
|
parse = self.parse_source(source, cache=cache)
|
||
|
|
if parse and not parsed:
|
||
|
|
parsed = True
|
||
|
|
|
||
|
|
if parsed:
|
||
|
|
# do post processing
|
||
|
|
self._inventory.reconcile_inventory()
|
||
|
|
else:
|
||
|
|
if C.INVENTORY_UNPARSED_IS_FAILED:
|
||
|
|
raise AnsibleError("No inventory was parsed, please check your configuration and options.")
|
||
|
|
else:
|
||
|
|
display.warning("No inventory was parsed, only implicit localhost is available")
|
||
|
|
|
||
|
|
self._inventory_plugins = []
|
||
|
|
|
||
|
|
def parse_source(self, source, cache=False):
|
||
|
|
''' Generate or update inventory for the source provided '''
|
||
|
|
|
||
|
|
parsed = False
|
||
|
|
display.debug(u'Examining possible inventory source: %s' % source)
|
||
|
|
|
||
|
|
# use binary for path functions
|
||
|
|
b_source = to_bytes(source)
|
||
|
|
|
||
|
|
# process directories as a collection of inventories
|
||
|
|
if os.path.isdir(b_source):
|
||
|
|
display.debug(u'Searching for inventory files in directory: %s' % source)
|
||
|
|
for i in sorted(os.listdir(b_source)):
|
||
|
|
|
||
|
|
display.debug(u'Considering %s' % i)
|
||
|
|
# Skip hidden files and stuff we explicitly ignore
|
||
|
|
if IGNORED.search(i):
|
||
|
|
continue
|
||
|
|
|
||
|
|
# recursively deal with directory entries
|
||
|
|
fullpath = to_text(os.path.join(b_source, i), errors='surrogate_or_strict')
|
||
|
|
parsed_this_one = self.parse_source(fullpath, cache=cache)
|
||
|
|
display.debug(u'parsed %s as %s' % (fullpath, parsed_this_one))
|
||
|
|
if not parsed:
|
||
|
|
parsed = parsed_this_one
|
||
|
|
else:
|
||
|
|
# left with strings or files, let plugins figure it out
|
||
|
|
|
||
|
|
# set so new hosts can use for inventory_file/dir vasr
|
||
|
|
self._inventory.current_source = source
|
||
|
|
|
||
|
|
# get inventory plugins if needed, there should always be at least one generator
|
||
|
|
if not self._inventory_plugins:
|
||
|
|
self._setup_inventory_plugins()
|
||
|
|
|
||
|
|
# try source with each plugin
|
||
|
|
failures = []
|
||
|
|
for plugin in self._inventory_plugins:
|
||
|
|
plugin_name = to_text(getattr(plugin, '_load_name', getattr(plugin, '_original_path', '')))
|
||
|
|
display.debug(u'Attempting to use plugin %s (%s)' % (plugin_name, plugin._original_path))
|
||
|
|
|
||
|
|
# initialize and figure out if plugin wants to attempt parsing this file
|
||
|
|
try:
|
||
|
|
plugin_wants = bool(plugin.verify_file(source))
|
||
|
|
except Exception:
|
||
|
|
plugin_wants = False
|
||
|
|
|
||
|
|
if plugin_wants:
|
||
|
|
try:
|
||
|
|
# in case plugin fails 1/2 way we dont want partial inventory
|
||
|
|
plugin.parse(self._inventory, self._loader, source, cache=cache)
|
||
|
|
parsed = True
|
||
|
|
display.vvv('Parsed %s inventory source with %s plugin' % (source, plugin_name))
|
||
|
|
break
|
||
|
|
except AnsibleParserError as e:
|
||
|
|
display.debug('%s was not parsable by %s' % (source, plugin_name))
|
||
|
|
tb = ''.join(traceback.format_tb(sys.exc_info()[2]))
|
||
|
|
failures.append({'src': source, 'plugin': plugin_name, 'exc': e, 'tb': tb})
|
||
|
|
except Exception as e:
|
||
|
|
display.debug('%s failed while attempting to parse %s' % (plugin_name, source))
|
||
|
|
tb = ''.join(traceback.format_tb(sys.exc_info()[2]))
|
||
|
|
failures.append({'src': source, 'plugin': plugin_name, 'exc': AnsibleError(e), 'tb': tb})
|
||
|
|
else:
|
||
|
|
display.v('%s did not meet %s requirements, check plugin documentation if this is unexpected' % (source, plugin_name))
|
||
|
|
else:
|
||
|
|
if not parsed and failures:
|
||
|
|
# only if no plugin processed files should we show errors.
|
||
|
|
for fail in failures:
|
||
|
|
display.warning(u'\n* Failed to parse %s with %s plugin: %s' % (to_text(fail['src']), fail['plugin'], to_text(fail['exc'])))
|
||
|
|
if 'tb' in fail:
|
||
|
|
display.vvv(to_text(fail['tb']))
|
||
|
|
if C.INVENTORY_ANY_UNPARSED_IS_FAILED:
|
||
|
|
raise AnsibleError(u'Completely failed to parse inventory source %s' % (source))
|
||
|
|
if not parsed:
|
||
|
|
display.warning("Unable to parse %s as an inventory source" % source)
|
||
|
|
|
||
|
|
# clear up, jic
|
||
|
|
self._inventory.current_source = None
|
||
|
|
|
||
|
|
return parsed
|
||
|
|
|
||
|
|
def clear_caches(self):
|
||
|
|
''' clear all caches '''
|
||
|
|
self._hosts_patterns_cache = {}
|
||
|
|
self._pattern_cache = {}
|
||
|
|
# FIXME: flush inventory cache
|
||
|
|
|
||
|
|
def refresh_inventory(self):
|
||
|
|
''' recalculate inventory '''
|
||
|
|
|
||
|
|
self.clear_caches()
|
||
|
|
self._inventory = InventoryData()
|
||
|
|
self.parse_sources(cache=False)
|
||
|
|
|
||
|
|
def _match_list(self, items, pattern_str):
|
||
|
|
# compile patterns
|
||
|
|
try:
|
||
|
|
if not pattern_str.startswith('~'):
|
||
|
|
pattern = re.compile(fnmatch.translate(pattern_str))
|
||
|
|
else:
|
||
|
|
pattern = re.compile(pattern_str[1:])
|
||
|
|
except Exception:
|
||
|
|
raise AnsibleError('Invalid host list pattern: %s' % pattern_str)
|
||
|
|
|
||
|
|
# apply patterns
|
||
|
|
results = []
|
||
|
|
for item in items:
|
||
|
|
if pattern.match(item):
|
||
|
|
results.append(item)
|
||
|
|
return results
|
||
|
|
|
||
|
|
def get_hosts(self, pattern="all", ignore_limits=False, ignore_restrictions=False, order=None):
|
||
|
|
"""
|
||
|
|
Takes a pattern or list of patterns and returns a list of matching
|
||
|
|
inventory host names, taking into account any active restrictions
|
||
|
|
or applied subsets
|
||
|
|
"""
|
||
|
|
|
||
|
|
hosts = []
|
||
|
|
|
||
|
|
# Check if pattern already computed
|
||
|
|
if isinstance(pattern, list):
|
||
|
|
pattern_hash = u":".join(pattern)
|
||
|
|
else:
|
||
|
|
pattern_hash = pattern
|
||
|
|
|
||
|
|
if pattern_hash:
|
||
|
|
if not ignore_limits and self._subset:
|
||
|
|
pattern_hash += u":%s" % to_text(self._subset, errors='surrogate_or_strict')
|
||
|
|
|
||
|
|
if not ignore_restrictions and self._restriction:
|
||
|
|
pattern_hash += u":%s" % to_text(self._restriction, errors='surrogate_or_strict')
|
||
|
|
|
||
|
|
if pattern_hash not in self._hosts_patterns_cache:
|
||
|
|
|
||
|
|
patterns = split_host_pattern(pattern)
|
||
|
|
hosts = self._evaluate_patterns(patterns)
|
||
|
|
|
||
|
|
# mainly useful for hostvars[host] access
|
||
|
|
if not ignore_limits and self._subset:
|
||
|
|
# exclude hosts not in a subset, if defined
|
||
|
|
subset = self._evaluate_patterns(self._subset)
|
||
|
|
hosts = [h for h in hosts if h in subset]
|
||
|
|
|
||
|
|
if not ignore_restrictions and self._restriction:
|
||
|
|
# exclude hosts mentioned in any restriction (ex: failed hosts)
|
||
|
|
hosts = [h for h in hosts if h.name in self._restriction]
|
||
|
|
|
||
|
|
seen = set()
|
||
|
|
self._hosts_patterns_cache[pattern_hash] = [x for x in hosts if x not in seen and not seen.add(x)]
|
||
|
|
|
||
|
|
# sort hosts list if needed (should only happen when called from strategy)
|
||
|
|
if order in ['sorted', 'reverse_sorted']:
|
||
|
|
hosts = sorted(self._hosts_patterns_cache[pattern_hash][:], key=attrgetter('name'), reverse=(order == 'reverse_sorted'))
|
||
|
|
elif order == 'reverse_inventory':
|
||
|
|
hosts = self._hosts_patterns_cache[pattern_hash][::-1]
|
||
|
|
else:
|
||
|
|
hosts = self._hosts_patterns_cache[pattern_hash][:]
|
||
|
|
if order == 'shuffle':
|
||
|
|
shuffle(hosts)
|
||
|
|
elif order not in [None, 'inventory']:
|
||
|
|
raise AnsibleOptionsError("Invalid 'order' specified for inventory hosts: %s" % order)
|
||
|
|
|
||
|
|
return hosts
|
||
|
|
|
||
|
|
def _evaluate_patterns(self, patterns):
|
||
|
|
"""
|
||
|
|
Takes a list of patterns and returns a list of matching host names,
|
||
|
|
taking into account any negative and intersection patterns.
|
||
|
|
"""
|
||
|
|
|
||
|
|
patterns = order_patterns(patterns)
|
||
|
|
hosts = []
|
||
|
|
|
||
|
|
for p in patterns:
|
||
|
|
# avoid resolving a pattern that is a plain host
|
||
|
|
if p in self._inventory.hosts:
|
||
|
|
hosts.append(self._inventory.get_host(p))
|
||
|
|
else:
|
||
|
|
that = self._match_one_pattern(p)
|
||
|
|
if p.startswith("!"):
|
||
|
|
hosts = [h for h in hosts if h not in frozenset(that)]
|
||
|
|
elif p.startswith("&"):
|
||
|
|
hosts = [h for h in hosts if h in frozenset(that)]
|
||
|
|
else:
|
||
|
|
hosts.extend([h for h in that if h.name not in frozenset([y.name for y in hosts])])
|
||
|
|
return hosts
|
||
|
|
|
||
|
|
def _match_one_pattern(self, pattern):
|
||
|
|
"""
|
||
|
|
Takes a single pattern and returns a list of matching host names.
|
||
|
|
Ignores intersection (&) and exclusion (!) specifiers.
|
||
|
|
|
||
|
|
The pattern may be:
|
||
|
|
|
||
|
|
1. A regex starting with ~, e.g. '~[abc]*'
|
||
|
|
2. A shell glob pattern with ?/*/[chars]/[!chars], e.g. 'foo*'
|
||
|
|
3. An ordinary word that matches itself only, e.g. 'foo'
|
||
|
|
|
||
|
|
The pattern is matched using the following rules:
|
||
|
|
|
||
|
|
1. If it's 'all', it matches all hosts in all groups.
|
||
|
|
2. Otherwise, for each known group name:
|
||
|
|
(a) if it matches the group name, the results include all hosts
|
||
|
|
in the group or any of its children.
|
||
|
|
(b) otherwise, if it matches any hosts in the group, the results
|
||
|
|
include the matching hosts.
|
||
|
|
|
||
|
|
This means that 'foo*' may match one or more groups (thus including all
|
||
|
|
hosts therein) but also hosts in other groups.
|
||
|
|
|
||
|
|
The built-in groups 'all' and 'ungrouped' are special. No pattern can
|
||
|
|
match these group names (though 'all' behaves as though it matches, as
|
||
|
|
described above). The word 'ungrouped' can match a host of that name,
|
||
|
|
and patterns like 'ungr*' and 'al*' can match either hosts or groups
|
||
|
|
other than all and ungrouped.
|
||
|
|
|
||
|
|
If the pattern matches one or more group names according to these rules,
|
||
|
|
it may have an optional range suffix to select a subset of the results.
|
||
|
|
This is allowed only if the pattern is not a regex, i.e. '~foo[1]' does
|
||
|
|
not work (the [1] is interpreted as part of the regex), but 'foo*[1]'
|
||
|
|
would work if 'foo*' matched the name of one or more groups.
|
||
|
|
|
||
|
|
Duplicate matches are always eliminated from the results.
|
||
|
|
"""
|
||
|
|
|
||
|
|
if pattern.startswith("&") or pattern.startswith("!"):
|
||
|
|
pattern = pattern[1:]
|
||
|
|
|
||
|
|
if pattern not in self._pattern_cache:
|
||
|
|
(expr, slice) = self._split_subscript(pattern)
|
||
|
|
hosts = self._enumerate_matches(expr)
|
||
|
|
try:
|
||
|
|
hosts = self._apply_subscript(hosts, slice)
|
||
|
|
except IndexError:
|
||
|
|
raise AnsibleError("No hosts matched the subscripted pattern '%s'" % pattern)
|
||
|
|
self._pattern_cache[pattern] = hosts
|
||
|
|
|
||
|
|
return self._pattern_cache[pattern]
|
||
|
|
|
||
|
|
def _split_subscript(self, pattern):
|
||
|
|
"""
|
||
|
|
Takes a pattern, checks if it has a subscript, and returns the pattern
|
||
|
|
without the subscript and a (start,end) tuple representing the given
|
||
|
|
subscript (or None if there is no subscript).
|
||
|
|
|
||
|
|
Validates that the subscript is in the right syntax, but doesn't make
|
||
|
|
sure the actual indices make sense in context.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Do not parse regexes for enumeration info
|
||
|
|
if pattern.startswith('~'):
|
||
|
|
return (pattern, None)
|
||
|
|
|
||
|
|
# We want a pattern followed by an integer or range subscript.
|
||
|
|
# (We can't be more restrictive about the expression because the
|
||
|
|
# fnmatch semantics permit [\[:\]] to occur.)
|
||
|
|
|
||
|
|
pattern_with_subscript = re.compile(
|
||
|
|
r'''^
|
||
|
|
(.+) # A pattern expression ending with...
|
||
|
|
\[(?: # A [subscript] expression comprising:
|
||
|
|
(-?[0-9]+)| # A single positive or negative number
|
||
|
|
([0-9]+)([:-]) # Or an x:y or x: range.
|
||
|
|
([0-9]*)
|
||
|
|
)\]
|
||
|
|
$
|
||
|
|
''', re.X
|
||
|
|
)
|
||
|
|
|
||
|
|
subscript = None
|
||
|
|
m = pattern_with_subscript.match(pattern)
|
||
|
|
if m:
|
||
|
|
(pattern, idx, start, sep, end) = m.groups()
|
||
|
|
if idx:
|
||
|
|
subscript = (int(idx), None)
|
||
|
|
else:
|
||
|
|
if not end:
|
||
|
|
end = -1
|
||
|
|
subscript = (int(start), int(end))
|
||
|
|
if sep == '-':
|
||
|
|
display.warning("Use [x:y] inclusive subscripts instead of [x-y] which has been removed")
|
||
|
|
|
||
|
|
return (pattern, subscript)
|
||
|
|
|
||
|
|
def _apply_subscript(self, hosts, subscript):
|
||
|
|
"""
|
||
|
|
Takes a list of hosts and a (start,end) tuple and returns the subset of
|
||
|
|
hosts based on the subscript (which may be None to return all hosts).
|
||
|
|
"""
|
||
|
|
|
||
|
|
if not hosts or not subscript:
|
||
|
|
return hosts
|
||
|
|
|
||
|
|
(start, end) = subscript
|
||
|
|
|
||
|
|
if end:
|
||
|
|
if end == -1:
|
||
|
|
end = len(hosts) - 1
|
||
|
|
return hosts[start:end + 1]
|
||
|
|
else:
|
||
|
|
return [hosts[start]]
|
||
|
|
|
||
|
|
def _enumerate_matches(self, pattern):
|
||
|
|
"""
|
||
|
|
Returns a list of host names matching the given pattern according to the
|
||
|
|
rules explained above in _match_one_pattern.
|
||
|
|
"""
|
||
|
|
|
||
|
|
results = []
|
||
|
|
# check if pattern matches group
|
||
|
|
matching_groups = self._match_list(self._inventory.groups, pattern)
|
||
|
|
if matching_groups:
|
||
|
|
for groupname in matching_groups:
|
||
|
|
results.extend(self._inventory.groups[groupname].get_hosts())
|
||
|
|
|
||
|
|
# check hosts if no groups matched or it is a regex/glob pattern
|
||
|
|
if not matching_groups or pattern.startswith('~') or any(special in pattern for special in ('.', '?', '*', '[')):
|
||
|
|
# pattern might match host
|
||
|
|
matching_hosts = self._match_list(self._inventory.hosts, pattern)
|
||
|
|
if matching_hosts:
|
||
|
|
for hostname in matching_hosts:
|
||
|
|
results.append(self._inventory.hosts[hostname])
|
||
|
|
|
||
|
|
if not results and pattern in C.LOCALHOST:
|
||
|
|
# get_host autocreates implicit when needed
|
||
|
|
implicit = self._inventory.get_host(pattern)
|
||
|
|
if implicit:
|
||
|
|
results.append(implicit)
|
||
|
|
|
||
|
|
# Display warning if specified host pattern did not match any groups or hosts
|
||
|
|
if not results and not matching_groups and pattern != 'all':
|
||
|
|
display.warning("Could not match supplied host pattern, ignoring: %s" % pattern)
|
||
|
|
|
||
|
|
return results
|
||
|
|
|
||
|
|
def list_hosts(self, pattern="all"):
|
||
|
|
""" return a list of hostnames for a pattern """
|
||
|
|
# FIXME: cache?
|
||
|
|
result = [h for h in self.get_hosts(pattern)]
|
||
|
|
|
||
|
|
# allow implicit localhost if pattern matches and no other results
|
||
|
|
if len(result) == 0 and pattern in C.LOCALHOST:
|
||
|
|
result = [pattern]
|
||
|
|
|
||
|
|
return result
|
||
|
|
|
||
|
|
def list_groups(self):
|
||
|
|
# FIXME: cache?
|
||
|
|
return sorted(self._inventory.groups.keys(), key=lambda x: x)
|
||
|
|
|
||
|
|
def restrict_to_hosts(self, restriction):
|
||
|
|
"""
|
||
|
|
Restrict list operations to the hosts given in restriction. This is used
|
||
|
|
to batch serial operations in main playbook code, don't use this for other
|
||
|
|
reasons.
|
||
|
|
"""
|
||
|
|
if restriction is None:
|
||
|
|
return
|
||
|
|
elif not isinstance(restriction, list):
|
||
|
|
restriction = [restriction]
|
||
|
|
self._restriction = [h.name for h in restriction]
|
||
|
|
|
||
|
|
def subset(self, subset_pattern):
|
||
|
|
"""
|
||
|
|
Limits inventory results to a subset of inventory that matches a given
|
||
|
|
pattern, such as to select a given geographic of numeric slice amongst
|
||
|
|
a previous 'hosts' selection that only select roles, or vice versa.
|
||
|
|
Corresponds to --limit parameter to ansible-playbook
|
||
|
|
"""
|
||
|
|
if subset_pattern is None:
|
||
|
|
self._subset = None
|
||
|
|
else:
|
||
|
|
subset_patterns = split_host_pattern(subset_pattern)
|
||
|
|
results = []
|
||
|
|
# allow Unix style @filename data
|
||
|
|
for x in subset_patterns:
|
||
|
|
if x.startswith("@"):
|
||
|
|
fd = open(x[1:])
|
||
|
|
results.extend(fd.read().split("\n"))
|
||
|
|
fd.close()
|
||
|
|
else:
|
||
|
|
results.append(x)
|
||
|
|
self._subset = results
|
||
|
|
|
||
|
|
def remove_restriction(self):
|
||
|
|
""" Do not restrict list operations """
|
||
|
|
self._restriction = None
|
||
|
|
|
||
|
|
def clear_pattern_cache(self):
|
||
|
|
self._pattern_cache = {}
|