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salt/salt/state.py

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# -*- coding: utf-8 -*-
'''
The module used to execute states in salt. A state is unlike a module
execution in that instead of just executing a command it ensure that a
certain state is present on the system.
The data sent to the state calls is as follows:
{ 'state': '<state module name>',
'fun': '<state function name>',
'name': '<the name argument passed to all states>'
'argn': '<arbitrary argument, can have many of these>'
}
'''
# Import python libs
import os
import sys
import copy
import site
import fnmatch
import logging
import traceback
import datetime
# Import salt libs
import salt.utils
import salt.loader
import salt.minion
import salt.pillar
import salt.fileclient
import salt.utils.event
import salt.syspaths as syspaths
from salt.utils import context, immutabletypes
from salt._compat import string_types
from salt.template import compile_template, compile_template_str
from salt.exceptions import SaltRenderError, SaltReqTimeoutError, SaltException
from salt.utils.odict import OrderedDict, DefaultOrderedDict
log = logging.getLogger(__name__)
STATE_INTERNAL_KEYWORDS = frozenset([
# These are keywords passed to state module functions which are to be used
# by salt in this state module and not on the actual state module function
'check_cmd',
'fail_hard',
'fun',
'onchanges',
'onfail',
'onlyif',
'order',
'prereq',
'prereq_in',
'reload_modules',
'require',
'require_in',
'saltenv',
'state',
'unless',
'use',
'watch',
'watch_in',
'__id__',
'__sls__',
'__env__',
'__pub_user',
'__pub_arg',
'__pub_jid',
'__pub_fun',
'__pub_tgt',
'__pub_ret',
'__pub_tgt_type',
])
def split_low_tag(tag):
'''
Take a low tag and split it back into the low dict that it came from
'''
state, id_, name, fun = tag.split('_|-')
return {'state': state,
'__id__': id_,
'name': name,
'fun': fun}
def _gen_tag(low):
'''
Generate the running dict tag string from the low data structure
'''
return '{0[state]}_|-{0[__id__]}_|-{0[name]}_|-{0[fun]}'.format(low)
def trim_req(req):
'''
Trim any function off of a requisite
'''
reqfirst = next(iter(req))
if '.' in reqfirst:
return {reqfirst.split('.')[0]: req[reqfirst]}
return req
def state_args(id_, state, high):
'''
Return a set of the arguments passed to the named state
'''
args = set()
if id_ not in high:
return args
if state not in high[id_]:
return args
for item in high[id_][state]:
if not isinstance(item, dict):
continue
if len(item) != 1:
continue
args.add(next(iter(item)))
return args
def find_name(name, state, high):
'''
Scan high data for the id referencing the given name
'''
ext_id = ''
if name in high:
ext_id = name
else:
# We need to scan for the name
for nid in high:
if state in high[nid]:
if isinstance(
high[nid][state],
list):
for arg in high[nid][state]:
if not isinstance(arg, dict):
continue
if len(arg) != 1:
continue
if arg[next(iter(arg))] == name:
ext_id = nid
return ext_id
def format_log(ret):
'''
Format the state into a log message
'''
msg = ''
if isinstance(ret, dict):
# Looks like the ret may be a valid state return
if 'changes' in ret:
# Yep, looks like a valid state return
chg = ret['changes']
if not chg:
if ret['comment']:
msg = ret['comment']
else:
msg = 'No changes made for {0[name]}'.format(ret)
elif isinstance(chg, dict):
if 'diff' in chg:
if isinstance(chg['diff'], string_types):
msg = 'File changed:\n{0}'.format(chg['diff'])
if all([isinstance(x, dict) for x in chg.values()]):
if all([('old' in x and 'new' in x)
for x in chg.values()]):
# This is the return data from a package install
msg = 'Installed Packages:\n'
for pkg in chg:
old = chg[pkg]['old'] or 'absent'
new = chg[pkg]['new'] or 'absent'
msg += '{0} changed from {1} to ' \
'{2}\n'.format(pkg, old, new)
if not msg:
msg = str(ret['changes'])
if ret['result'] is True or ret['result'] is None:
log.info(msg)
else:
log.error(msg)
else:
# catch unhandled data
log.info(str(ret))
def master_compile(master_opts, minion_opts, grains, id_, saltenv):
'''
Compile the master side low state data, and build the hidden state file
'''
st_ = MasterHighState(master_opts, minion_opts, grains, id_, saltenv)
return st_.compile_highstate()
def ishashable(obj):
try:
hash(obj)
except TypeError:
return False
return True
class StateError(Exception):
'''
Custom exception class.
'''
pass
class Compiler(object):
'''
Class used to compile and manage the High Data structure
'''
def __init__(self, opts):
self.opts = opts
self.rend = salt.loader.render(self.opts, {})
def render_template(self, template, **kwargs):
'''
Enforce the states in a template
'''
high = compile_template(
template, self.rend, self.opts['renderer'], **kwargs)
if not high:
return high
return self.pad_funcs(high)
def pad_funcs(self, high):
'''
Turns dot delimited function refs into function strings
'''
for name in high:
if not isinstance(high[name], dict):
if isinstance(high[name], string_types):
# Is this is a short state? It needs to be padded!
if '.' in high[name]:
comps = high[name].split('.')
if len(comps) >= 2:
# Merge the comps
comps[1] = '.'.join(comps[1:len(comps)])
high[name] = {
#'__sls__': template,
#'__env__': None,
comps[0]: [comps[1]]
}
continue
continue
skeys = set()
for key in sorted(high[name]):
if key.startswith('_'):
continue
if not isinstance(high[name][key], list):
continue
if '.' in key:
comps = key.split('.')
if len(comps) >= 2:
# Merge the comps
comps[1] = '.'.join(comps[1:len(comps)])
# Salt doesn't support state files such as:
#
# /etc/redis/redis.conf:
# file.managed:
# - user: redis
# - group: redis
# - mode: 644
# file.comment:
# - regex: ^requirepass
if comps[0] in skeys:
continue
high[name][comps[0]] = high[name].pop(key)
high[name][comps[0]].append(comps[1])
skeys.add(comps[0])
continue
skeys.add(key)
return high
def verify_high(self, high):
'''
Verify that the high data is viable and follows the data structure
'''
errors = []
if not isinstance(high, dict):
errors.append('High data is not a dictionary and is invalid')
reqs = {}
for name, body in high.items():
if name.startswith('__'):
continue
if not isinstance(name, string_types):
errors.append(
'ID {0!r} in SLS {1!r} is not formed as a string, but is '
'a {2}'.format(name, body['__sls__'], type(name).__name__)
)
if not isinstance(body, dict):
err = ('The type {0} in {1} is not formatted as a dictionary'
.format(name, body))
errors.append(err)
continue
for state in body:
if state.startswith('__'):
continue
if not isinstance(body[state], list):
errors.append(
'State {0!r} in SLS {1!r} is not formed as a list'
.format(name, body['__sls__'])
)
else:
fun = 0
if '.' in state:
fun += 1
for arg in body[state]:
if isinstance(arg, string_types):
fun += 1
if ' ' in arg.strip():
errors.append(('The function "{0}" in state '
'"{1}" in SLS "{2}" has '
'whitespace, a function with whitespace is '
'not supported, perhaps this is an argument '
'that is missing a ":"').format(
arg,
name,
body['__sls__']))
elif isinstance(arg, dict):
# The arg is a dict, if the arg is require or
# watch, it must be a list.
#
# Add the requires to the reqs dict and check them
# all for recursive requisites.
argfirst = next(iter(arg))
if argfirst in ('require', 'watch', 'prereq'):
if not isinstance(arg[argfirst], list):
errors.append(('The {0}'
' statement in state {1!r} in SLS {2!r} '
'needs to be formed as a list').format(
argfirst,
name,
body['__sls__']
))
# It is a list, verify that the members of the
# list are all single key dicts.
else:
reqs[name] = {'state': state}
for req in arg[argfirst]:
if not isinstance(req, dict):
err = ('Requisite declaration {0}'
' in SLS {1} is not formed as a'
' single key dictionary').format(
req,
body['__sls__'])
errors.append(err)
continue
req_key = next(iter(req))
req_val = req[req_key]
if '.' in req_key:
errors.append((
'Invalid requisite type {0!r} '
'in state {1!r}, in SLS '
'{2!r}. Requisite types must '
'not contain dots, did you '
'mean {3!r}?'.format(
req_key,
name,
body['__sls__'],
req_key[:req_key.find('.')]
)
))
if not ishashable(req_val):
errors.append((
'Illegal requisite "{0}", '
'is SLS {1}\n'
).format(
str(req_val),
body['__sls__']))
continue
# Check for global recursive requisites
reqs[name][req_val] = req_key
# I am going beyond 80 chars on
# purpose, this is just too much
# of a pain to deal with otherwise
if req_val in reqs:
if name in reqs[req_val]:
if reqs[req_val][name] == state:
if reqs[req_val]['state'] == reqs[name][req_val]:
err = ('A recursive '
'requisite was found, SLS '
'"{0}" ID "{1}" ID "{2}"'
).format(
body['__sls__'],
name,
req_val
)
errors.append(err)
# Make sure that there is only one key in the
# dict
if len(list(arg)) != 1:
errors.append(('Multiple dictionaries '
'defined in argument of state {0!r} in SLS'
' {1!r}').format(
name,
body['__sls__']))
if not fun:
if state == 'require' or state == 'watch':
continue
errors.append(('No function declared in state {0!r} in'
' SLS {1!r}').format(state, body['__sls__']))
elif fun > 1:
errors.append(
'Too many functions declared in state {0!r} in '
'SLS {1!r}'.format(state, body['__sls__'])
)
return errors
def order_chunks(self, chunks):
'''
Sort the chunk list verifying that the chunks follow the order
specified in the order options.
'''
cap = 1
for chunk in chunks:
if 'order' in chunk:
if not isinstance(chunk['order'], int):
continue
chunk_order = chunk['order']
if 'name_order' in chunk:
chunk_order = chunk_order + chunk['name_order']
if chunk_order > cap - 1 and chunk_order > 0:
cap = chunk_order + 100
for chunk in chunks:
if 'order' not in chunk:
chunk['order'] = cap
else:
if isinstance(chunk['order'], int) and 'name_order' in chunk:
chunk['order'] = chunk['order'] + chunk.pop('name_order')
if not isinstance(chunk['order'], int):
if chunk['order'] == 'last':
chunk['order'] = cap + 1000000
else:
chunk['order'] = cap
elif isinstance(chunk['order'], int) and chunk['order'] < 0:
chunk['order'] = cap + 1000000 + chunk['order']
chunks.sort(key=lambda chunk: (chunk['order'], '{0[state]}{0[name]}{0[fun]}'.format(chunk)))
return chunks
def compile_high_data(self, high):
'''
"Compile" the high data as it is retrieved from the CLI or YAML into
the individual state executor structures
'''
chunks = []
for name, body in high.items():
if name.startswith('__'):
continue
for state, run in body.items():
funcs = set()
names = set()
if state.startswith('__'):
continue
chunk = {'state': state,
'name': name}
if '__sls__' in body:
chunk['__sls__'] = body['__sls__']
if '__env__' in body:
chunk['__env__'] = body['__env__']
chunk['__id__'] = name
for arg in run:
if isinstance(arg, string_types):
funcs.add(arg)
continue
if isinstance(arg, dict):
for key, val in arg.items():
if key == 'names':
names.update(val)
continue
else:
chunk.update(arg)
if names:
name_order = 1
for low_name in names:
live = copy.deepcopy(chunk)
live['name'] = low_name
live['name_order'] = name_order
name_order = name_order + 1
for fun in funcs:
live['fun'] = fun
chunks.append(live)
else:
live = copy.deepcopy(chunk)
for fun in funcs:
live['fun'] = fun
chunks.append(live)
chunks = self.order_chunks(chunks)
return chunks
def apply_exclude(self, high):
'''
Read in the __exclude__ list and remove all excluded objects from the
high data
'''
if '__exclude__' not in high:
return high
ex_sls = set()
ex_id = set()
exclude = high.pop('__exclude__')
for exc in exclude:
if isinstance(exc, str):
# The exclude statement is a string, assume it is an sls
ex_sls.add(exc)
if isinstance(exc, dict):
# Explicitly declared exclude
if len(exc) != 1:
continue
key = exc.keys()[0]
if key == 'sls':
ex_sls.add(exc['sls'])
elif key == 'id':
ex_id.add(exc['id'])
# Now the excludes have been simplified, use them
if ex_sls:
# There are sls excludes, find the associtaed ids
for name, body in high.items():
if name.startswith('__'):
continue
if body.get('__sls__', '') in ex_sls:
ex_id.add(name)
for id_ in ex_id:
if id_ in high:
high.pop(id_)
return high
class State(object):
'''
Class used to execute salt states
'''
def __init__(self, opts, pillar=None, jid=None):
if 'grains' not in opts:
opts['grains'] = salt.loader.grains(opts)
self.opts = opts
self._pillar_override = pillar
self.opts['pillar'] = self._gather_pillar()
self.state_con = {}
self.load_modules()
self.active = set()
self.mod_init = set()
self.pre = {}
self.__run_num = 0
self.jid = jid
def _gather_pillar(self):
'''
Whenever a state run starts, gather the pillar data fresh
'''
pillar = salt.pillar.get_pillar(
self.opts,
self.opts['grains'],
self.opts['id'],
self.opts['environment'],
)
ret = pillar.compile_pillar()
if self._pillar_override and isinstance(self._pillar_override, dict):
ret.update(self._pillar_override)
return ret
def _mod_init(self, low):
'''
Check the module initialization function, if this is the first run
of a state package that has a mod_init function, then execute the
mod_init function in the state module.
'''
minit = '{0}.mod_init'.format(low['state'])
if low['state'] not in self.mod_init:
if minit in self.states:
mret = self.states[minit](low)
if not mret:
return
self.mod_init.add(low['state'])
def _mod_aggregate(self, low, running, chunks):
'''
Execute the aggregation systems to runtime modify the low chunk
'''
agg_opt = self.functions['config.option']('state_aggregate')
if low.get('aggregate') is True:
agg_opt = low['aggregate']
if agg_opt is True:
agg_opt = [low['state']]
else:
return low
if low['state'] in agg_opt and not low.get('__agg__'):
agg_fun = '{0}.mod_aggregate'.format(low['state'])
if agg_fun in self.states:
try:
low = self.states[agg_fun](low, chunks, running)
low['__agg__'] = True
except TypeError:
log.error('Failed to execute aggregate for state {0}'.format(low['state']))
return low
def _run_check(self, low_data):
'''
Check that unless doesn't return 0, and that onlyif returns a 0.
'''
ret = {'result': False}
if 'onlyif' in low_data:
if not isinstance(low_data['onlyif'], list):
low_data_onlyif = [low_data['onlyif']]
else:
low_data_onlyif = low_data['onlyif']
for entry in low_data_onlyif:
cmd = self.functions['cmd.retcode'](entry, ignore_retcode=True)
log.debug('Last command return code: {0}'.format(cmd))
if cmd != 0 and ret['result'] is False:
ret.update({'comment': 'onlyif execution failed', 'result': True})
elif cmd == 0:
ret.update({'comment': 'onlyif execution succeeded', 'result': False})
return ret
return ret
if 'unless' in low_data:
if not isinstance(low_data['unless'], list):
low_data_unless = [low_data['unless']]
else:
low_data_unless = low_data['unless']
for entry in low_data_unless:
cmd = self.functions['cmd.retcode'](entry, ignore_retcode=True)
log.debug('Last command return code: {0}'.format(cmd))
if cmd == 0 and ret['result'] is False:
ret.update({'comment': 'unless execution succeeded', 'result': True})
elif cmd != 0:
ret.update({'comment': 'unless execution failed', 'result': False})
return ret
# No reason to stop, return ret
return ret
def _run_check_cmd(self, low_data):
'''
Alter the way a successfull state run is determined
'''
ret = {'result': False}
for entry in low_data['check_cmd']:
cmd = self.functions['cmd.retcode'](entry, ignore_retcode=True)
log.debug('Last command return code: {0}'.format(cmd))
if cmd == 0 and ret['result'] is False:
ret.update({'comment': 'check_cmd determined the state succeeded', 'result': True})
elif cmd != 0:
ret.update({'comment': 'check_cmd determined the state failed', 'result': False})
return ret
return ret
def load_modules(self, data=None):
'''
Load the modules into the state
'''
log.info('Loading fresh modules for state activity')
self.functions = salt.loader.minion_mods(self.opts, self.state_con)
if isinstance(data, dict):
if data.get('provider', False):
if isinstance(data['provider'], str):
providers = [{data['state']: data['provider']}]
elif isinstance(data['provider'], list):
providers = data['provider']
else:
providers = {}
for provider in providers:
for mod in provider:
funcs = salt.loader.raw_mod(self.opts,
provider[mod],
self.functions)
if funcs:
for func in funcs:
f_key = '{0}{1}'.format(
mod,
func[func.rindex('.'):]
)
self.functions[f_key] = funcs[func]
self.states = salt.loader.states(self.opts, self.functions)
self.rend = salt.loader.render(self.opts, self.functions, states=self.states)
def module_refresh(self):
'''
Refresh all the modules
'''
log.debug('Refreshing modules...')
if self.opts['grains'].get('os') != 'MacOS':
# In case a package has been installed into the current python
# process 'site-packages', the 'site' module needs to be reloaded in
# order for the newly installed package to be importable.
reload(site)
self.load_modules()
if not self.opts.get('local', False) and self.opts.get('multiprocessing', True):
self.functions['saltutil.refresh_modules']()
def check_refresh(self, data, ret):
'''
Check to see if the modules for this state instance need to be updated,
only update if the state is a file or a package and if it changed
something. If the file function is managed check to see if the file is a
possible module type, e.g. a python, pyx, or .so. Always refresh if the
function is recurse, since that can lay down anything.
'''
if data.get('reload_modules', False) is True:
# User explicitly requests a reload
self.module_refresh()
return
if not ret['changes']:
return
if data['state'] == 'file':
if data['fun'] == 'managed':
if data['name'].endswith(
('.py', '.pyx', '.pyo', '.pyc', '.so')):
self.module_refresh()
elif data['fun'] == 'recurse':
self.module_refresh()
elif data['fun'] == 'symlink':
if 'bin' in data['name']:
self.module_refresh()
elif data['state'] in ('pkg', 'ports'):
self.module_refresh()
def verify_ret(self, ret):
'''
Verify the state return data
'''
if not isinstance(ret, dict):
raise SaltException(
'Malformed state return, return must be a dict'
)
bad = []
for val in ['name', 'result', 'changes', 'comment']:
if val not in ret:
bad.append(val)
if bad:
raise SaltException(
('The following keys were not present in the state '
'return: {0}'
).format(','.join(bad)))
def verify_data(self, data):
'''
Verify the data, return an error statement if something is wrong
'''
errors = []
if 'state' not in data:
errors.append('Missing "state" data')
if 'fun' not in data:
errors.append('Missing "fun" data')
if 'name' not in data:
errors.append('Missing "name" data')
if data['name'] and not isinstance(data['name'], string_types):
errors.append(
'ID {0!r} in SLS {1!r} is not formed as a string, but is '
'a {2}'.format(
data['name'], data['__sls__'], type(data['name']).__name__)
)
if errors:
return errors
full = data['state'] + '.' + data['fun']
if full not in self.states:
if '__sls__' in data:
errors.append(
'State {0!r} found in SLS {1!r} is unavailable'.format(
full,
data['__sls__']
)
)
else:
errors.append(
'Specified state {0!r} is unavailable.'.format(
full
)
)
else:
# First verify that the parameters are met
aspec = salt.utils.get_function_argspec(self.states[full])
arglen = 0
deflen = 0
if isinstance(aspec.args, list):
arglen = len(aspec.args)
if isinstance(aspec.defaults, tuple):
deflen = len(aspec.defaults)
for ind in range(arglen - deflen):
if aspec.args[ind] not in data:
errors.append(
'Missing parameter {0} for state {1}'.format(
aspec.args[ind],
full
)
)
# If this chunk has a recursive require, then it will cause a
# recursive loop when executing, check for it
reqdec = ''
if 'require' in data:
reqdec = 'require'
if 'watch' in data:
# Check to see if the service has a mod_watch function, if it does
# not, then just require
# to just require extend the require statement with the contents
# of watch so that the mod_watch function is not called and the
# requisite capability is still used
if '{0}.mod_watch'.format(data['state']) not in self.states:
if 'require' in data:
data['require'].extend(data.pop('watch'))
else:
data['require'] = data.pop('watch')
reqdec = 'require'
else:
reqdec = 'watch'
if reqdec:
for req in data[reqdec]:
reqfirst = next(iter(req))
if data['state'] == reqfirst:
if (fnmatch.fnmatch(data['name'], req[reqfirst])
or fnmatch.fnmatch(data['__id__'], req[reqfirst])):
err = ('Recursive require detected in SLS {0} for'
' require {1} in ID {2}').format(
data['__sls__'],
req,
data['__id__'])
errors.append(err)
return errors
def verify_high(self, high):
'''
Verify that the high data is viable and follows the data structure
'''
errors = []
if not isinstance(high, dict):
errors.append('High data is not a dictionary and is invalid')
reqs = {}
for name, body in high.items():
if name.startswith('__'):
continue
if not isinstance(name, string_types):
errors.append(
'ID {0!r} in SLS {1!r} is not formed as a string, but '
'is a {2}'.format(
name, body['__sls__'], type(name).__name__)
)
if not isinstance(body, dict):
err = ('The type {0} in {1} is not formatted as a dictionary'
.format(name, body))
errors.append(err)
continue
for state in body:
if state.startswith('__'):
continue
if body[state] is None:
errors.append(
'ID {0!r} in SLS {1!r} contains a short declaration '
'({2}) with a trailing colon. When not passing any '
'arguments to a state, the colon must be omitted.'
.format(name, body['__sls__'], state)
)
continue
if not isinstance(body[state], list):
errors.append(
'State {0!r} in SLS {1!r} is not formed as a list'
.format(name, body['__sls__'])
)
else:
fun = 0
if '.' in state:
fun += 1
for arg in body[state]:
if isinstance(arg, string_types):
fun += 1
if ' ' in arg.strip():
errors.append(('The function "{0}" in state '
'"{1}" in SLS "{2}" has '
'whitespace, a function with whitespace is '
'not supported, perhaps this is an argument '
'that is missing a ":"').format(
arg,
name,
body['__sls__']))
elif isinstance(arg, dict):
# The arg is a dict, if the arg is require or
# watch, it must be a list.
#
# Add the requires to the reqs dict and check them
# all for recursive requisites.
argfirst = next(iter(arg))
if argfirst == 'names':
if not isinstance(arg[argfirst], list):
errors.append(
'The \'names\' argument in state '
'{0!r} in SLS {1!r} needs to be '
'formed as a list'
.format(name, body['__sls__'])
)
if argfirst in ('require', 'watch', 'prereq'):
if not isinstance(arg[argfirst], list):
errors.append(
'The {0} statement in state {1!r} in '
'SLS {2!r} needs to be formed as a '
'list'.format(argfirst,
name,
body['__sls__'])
)
# It is a list, verify that the members of the
# list are all single key dicts.
else:
reqs[name] = {'state': state}
for req in arg[argfirst]:
if not isinstance(req, dict):
err = ('Requisite declaration {0}'
' in SLS {1} is not formed as a'
' single key dictionary').format(
req,
body['__sls__'])
errors.append(err)
continue
req_key = next(iter(req))
req_val = req[req_key]
if '.' in req_key:
errors.append((
'Invalid requisite type {0!r} '
'in state {1!r}, in SLS '
'{2!r}. Requisite types must '
'not contain dots, did you '
'mean {3!r}?'.format(
req_key,
name,
body['__sls__'],
req_key[:req_key.find('.')]
)
))
if not ishashable(req_val):
errors.append((
'Illegal requisite "{0}", '
'please check your syntax.\n'
).format(str(req_val)))
continue
# Check for global recursive requisites
reqs[name][req_val] = req_key
# I am going beyond 80 chars on
# purpose, this is just too much
# of a pain to deal with otherwise
if req_val in reqs:
if name in reqs[req_val]:
if reqs[req_val][name] == state:
if reqs[req_val]['state'] == reqs[name][req_val]:
err = ('A recursive '
'requisite was found, SLS '
'"{0}" ID "{1}" ID "{2}"'
).format(
body['__sls__'],
name,
req_val
)
errors.append(err)
# Make sure that there is only one key in the
# dict
if len(list(arg)) != 1:
errors.append(
'Multiple dictionaries defined in '
'argument of state {0!r} in SLS {1!r}'
.format(name, body['__sls__'])
)
if not fun:
if state == 'require' or state == 'watch':
continue
errors.append(
'No function declared in state {0!r} in SLS {1!r}'
.format(state, body['__sls__'])
)
elif fun > 1:
errors.append(
'Too many functions declared in state {0!r} in '
'SLS {1!r}'.format(state, body['__sls__'])
)
return errors
def verify_chunks(self, chunks):
'''
Verify the chunks in a list of low data structures
'''
err = []
for chunk in chunks:
err += self.verify_data(chunk)
return err
def order_chunks(self, chunks):
'''
Sort the chunk list verifying that the chunks follow the order
specified in the order options.
'''
cap = 1
for chunk in chunks:
if 'order' in chunk:
if not isinstance(chunk['order'], int):
continue
chunk_order = chunk['order']
if 'name_order' in chunk:
chunk_order = chunk_order + chunk['name_order']
if chunk_order > cap - 1 and chunk_order > 0:
cap = chunk_order + 100
for chunk in chunks:
if 'order' not in chunk:
chunk['order'] = cap
else:
if isinstance(chunk['order'], int) and 'name_order' in chunk:
chunk['order'] = chunk['order'] + chunk.pop('name_order')
if not isinstance(chunk['order'], int):
if chunk['order'] == 'last':
chunk['order'] = cap + 1000000
else:
chunk['order'] = cap
elif isinstance(chunk['order'], int) and chunk['order'] < 0:
chunk['order'] = cap + 1000000 + chunk['order']
chunks.sort(key=lambda k: (k['order'], '{0[state]}{0[name]}{0[fun]}'.format(k)))
return chunks
def compile_high_data(self, high):
'''
"Compile" the high data as it is retrieved from the CLI or YAML into
the individual state executor structures
'''
chunks = []
for name, body in high.items():
if name.startswith('__'):
continue
for state, run in body.items():
funcs = set()
names = set()
if state.startswith('__'):
continue
chunk = {'state': state,
'name': name}
if '__sls__' in body:
chunk['__sls__'] = body['__sls__']
if '__env__' in body:
chunk['__env__'] = body['__env__']
chunk['__id__'] = name
for arg in run:
if isinstance(arg, string_types):
funcs.add(arg)
continue
if isinstance(arg, dict):
for key, val in arg.items():
if key == 'names':
names.update(val)
elif key == 'state':
# Don't pass down a state override
continue
elif (key == 'name' and
not isinstance(val, string_types)):
# Invalid name, fall back to ID
chunk[key] = name
else:
chunk[key] = val
if names:
name_order = 1
for low_name in names:
live = copy.deepcopy(chunk)
live['name'] = low_name
live['name_order'] = name_order
name_order = name_order + 1
for fun in funcs:
live['fun'] = fun
chunks.append(live)
else:
live = copy.deepcopy(chunk)
for fun in funcs:
live['fun'] = fun
chunks.append(live)
chunks = self.order_chunks(chunks)
return chunks
def reconcile_extend(self, high):
'''
Pull the extend data and add it to the respective high data
'''
errors = []
if '__extend__' not in high:
return high, errors
ext = high.pop('__extend__')
for ext_chunk in ext:
for name, body in ext_chunk.items():
if name not in high:
state_type = next(
x for x in body if not x.startswith('__')
)
# Check for a matching 'name' override in high data
id_ = find_name(name, state_type, high)
if id_:
name = id_
else:
errors.append(
'Cannot extend ID \'{0}\' in \'{1}:{2}\'. It is not '
'part of the high state.\n'
'This is likely due to a missing include statement '
'or an incorrectly typed ID.\nEnsure that a '
'state with an ID of \'{0}\' is available\nin '
'environment \'{1}\' and to SLS \'{2}\''.format(
name,
body.get('__env__', 'base'),
body.get('__sls__', 'base'))
)
continue
for state, run in body.items():
if state.startswith('__'):
continue
if state not in high[name]:
high[name][state] = run
continue
# high[name][state] is extended by run, both are lists
for arg in run:
update = False
for hind in range(len(high[name][state])):
if (isinstance(arg, string_types) and
isinstance(high[name][state][hind], string_types)):
# replacing the function, replace the index
high[name][state].pop(hind)
high[name][state].insert(hind, arg)
update = True
continue
if (isinstance(arg, dict) and
isinstance(high[name][state][hind], dict)):
# It is an option, make sure the options match
argfirst = next(iter(arg))
if (argfirst ==
next(iter(high[name][state][hind]))):
# They match, check if the option is a
# watch or require, append, otherwise
# replace
if (argfirst == 'require' or
argfirst == 'watch'):
# Extend the list
(high[name][state][hind][argfirst]
.extend(arg[argfirst]))
update = True
else:
# Replace the value
high[name][state][hind] = arg
update = True
if (argfirst == 'name' and
next(iter(high[name][state][hind])) == 'names'):
# If names are overwritten by name use the name
high[name][state][hind] = arg
if not update:
high[name][state].append(arg)
return high, errors
def apply_exclude(self, high):
'''
Read in the __exclude__ list and remove all excluded objects from the
high data
'''
if '__exclude__' not in high:
return high
ex_sls = set()
ex_id = set()
exclude = high.pop('__exclude__')
for exc in exclude:
if isinstance(exc, str):
# The exclude statement is a string, assume it is an sls
ex_sls.add(exc)
if isinstance(exc, dict):
# Explicitly declared exclude
if len(exc) != 1:
continue
key = exc.keys()[0]
if key == 'sls':
ex_sls.add(exc['sls'])
elif key == 'id':
ex_id.add(exc['id'])
# Now the excludes have been simplified, use them
if ex_sls:
# There are sls excludes, find the associated ids
for name, body in high.items():
if name.startswith('__'):
continue
sls = body.get('__sls__', '')
if not sls:
continue
for ex_ in ex_sls:
if fnmatch.fnmatch(sls, ex_):
ex_id.add(name)
for id_ in ex_id:
if id_ in high:
high.pop(id_)
return high
def requisite_in(self, high):
'''
Extend the data reference with requisite_in arguments
'''
req_in = set([
'require_in',
'watch_in',
'onfail_in',
'onchanges_in',
'use',
'use_in',
'prereq',
'prereq_in',
])
req_in_all = req_in.union(
set([
'require',
'watch',
'onfail',
'onchanges',
]))
extend = {}
errors = []
for id_, body in high.items():
if not isinstance(body, dict):
continue
for state, run in body.items():
if state.startswith('__'):
continue
for arg in run:
if isinstance(arg, dict):
# It is not a function, verify that the arg is a
# requisite in statement
if len(arg) < 1:
# Empty arg dict
# How did we get this far?
continue
# Split out the components
key = next(iter(arg))
if key not in req_in:
continue
rkey = key.split('_')[0]
items = arg[key]
if isinstance(items, dict):
# Formatted as a single req_in
for _state, name in items.items():
# Not a use requisite_in
found = False
if name not in extend:
extend[name] = {}
if '.' in _state:
errors.append((
'Invalid requisite in {0}: {1} for '
'{2}, in SLS {3!r}. Requisites must '
'not contain dots, did you mean {4!r}?'
.format(
rkey,
_state,
name,
body['__sls__'],
_state[:_state.find('.')]
)
))
_state = _state.split(".")[0]
if _state not in extend[name]:
extend[name][_state] = []
extend[name]['__env__'] = body['__env__']
extend[name]['__sls__'] = body['__sls__']
for ind in range(len(extend[name][_state])):
if next(iter(
extend[name][_state][ind])) == rkey:
# Extending again
extend[name][_state][ind][rkey].append(
{state: id_}
)
found = True
if found:
continue
# The rkey is not present yet, create it
extend[name][_state].append(
{rkey: [{state: id_}]}
)
if isinstance(items, list):
# Formed as a list of requisite additions
for ind in items:
if not isinstance(ind, dict):
# Malformed req_in
continue
if len(ind) < 1:
continue
_state = next(iter(ind))
name = ind[_state]
if '.' in _state:
errors.append((
'Invalid requisite in {0}: {1} for '
'{2}, in SLS {3!r}. Requisites must '
'not contain dots, did you mean {4!r}?'
.format(
rkey,
_state,
name,
body['__sls__'],
_state[:_state.find('.')]
)
))
_state = _state.split(".")[0]
if key == 'prereq_in':
# Add prerequired to origin
if id_ not in extend:
extend[id_] = {}
if state not in extend[id_]:
extend[id_][state] = []
extend[id_][state].append(
{'prerequired': [{_state: name}]}
)
if key == 'prereq':
# Add prerequired to prereqs
ext_id = find_name(name, _state, high)
if not ext_id:
continue
if ext_id not in extend:
extend[ext_id] = {}
if _state not in extend[ext_id]:
extend[ext_id][_state] = []
extend[ext_id][_state].append(
{'prerequired': [{state: id_}]}
)
continue
if key == 'use_in':
# Add the running states args to the
# use_in states
ext_id = find_name(name, _state, high)
if not ext_id:
continue
ext_args = state_args(ext_id, _state, high)
if ext_id not in extend:
extend[ext_id] = {}
if _state not in extend[ext_id]:
extend[ext_id][_state] = []
ignore_args = req_in_all.union(ext_args)
for arg in high[id_][state]:
if not isinstance(arg, dict):
continue
if len(arg) != 1:
continue
if next(iter(arg)) in ignore_args:
continue
# Don't use name or names
if arg.keys()[0] == 'name':
continue
if arg.keys()[0] == 'names':
continue
extend[ext_id][_state].append(arg)
continue
if key == 'use':
# Add the use state's args to the
# running state
ext_id = find_name(name, _state, high)
if not ext_id:
continue
loc_args = state_args(id_, state, high)
if id_ not in extend:
extend[id_] = {}
if state not in extend[id_]:
extend[id_][state] = []
ignore_args = req_in_all.union(loc_args)
for arg in high[ext_id][_state]:
if not isinstance(arg, dict):
continue
if len(arg) != 1:
continue
if next(iter(arg)) in ignore_args:
continue
# Don't use name or names
if arg.keys()[0] == 'name':
continue
if arg.keys()[0] == 'names':
continue
extend[id_][state].append(arg)
continue
found = False
if name not in extend:
extend[name] = {}
if _state not in extend[name]:
extend[name][_state] = []
extend[name]['__env__'] = body['__env__']
extend[name]['__sls__'] = body['__sls__']
for ind in range(len(extend[name][_state])):
if next(iter(
extend[name][_state][ind])) == rkey:
# Extending again
extend[name][_state][ind][rkey].append(
{state: id_}
)
found = True
if found:
continue
# The rkey is not present yet, create it
extend[name][_state].append(
{rkey: [{state: id_}]}
)
high['__extend__'] = []
for key, val in extend.items():
high['__extend__'].append({key: val})
req_in_high, req_in_errors = self.reconcile_extend(high)
errors.extend(req_in_errors)
return req_in_high, errors
def call(self, low, chunks=None, running=None):
'''
Call a state directly with the low data structure, verify data
before processing.
'''
start_time = datetime.datetime.now()
log.info('Running state [{0}] at time {1}'.format(low['name'], start_time.time().isoformat()))
errors = self.verify_data(low)
if errors:
ret = {
'result': False,
'name': low['name'],
'changes': {},
'comment': '',
}
for err in errors:
ret['comment'] += '{0}\n'.format(err)
ret['__run_num__'] = self.__run_num
self.__run_num += 1
format_log(ret)
self.check_refresh(low, ret)
return ret
else:
ret = {'result': False, 'name': low['name'], 'changes': {}}
if not low.get('__prereq__'):
log.info(
'Executing state {0[state]}.{0[fun]} for {0[name]}'.format(
low
)
)
if 'provider' in low:
self.load_modules(low)
state_func_name = '{0[state]}.{0[fun]}'.format(low)
cdata = salt.utils.format_call(
self.states[state_func_name], low,
initial_ret={'full': state_func_name},
expected_extra_kws=STATE_INTERNAL_KEYWORDS
)
inject_globals = {
# Pass a copy of the running dictionary, the low state chunks and
# the current state dictionaries.
# We pass deep copies here because we don't want any misbehaving
# state module to change these at runtime.
'__low__': immutabletypes.freeze(low),
'__running__': immutabletypes.freeze(running) if running else {},
'__lowstate__': immutabletypes.freeze(chunks) if chunks else {}
}
if low.get('__prereq__'):
test = sys.modules[self.states[cdata['full']].__module__].__opts__['test']
sys.modules[self.states[cdata['full']].__module__].__opts__['test'] = True
try:
# Let's get a reference to the salt environment to use within this
# state call.
#
# If the state function accepts an 'env' keyword argument, it
# allows the state to be overridden(we look for that in cdata). If
# that's not found in cdata, we look for what we're being passed in
# the original data, namely, the special dunder __env__. If that's
# not found we default to 'base'
if ('unless' in low and '{0[state]}.mod_run_check'.format(low) not in self.states) or \
('onlyif' in low and '{0[state]}.mod_run_check'.format(low) not in self.states):
ret.update(self._run_check(low))
if 'saltenv' in low:
inject_globals['__env__'] = low['saltenv']
elif isinstance(cdata['kwargs'].get('env', None), string_types):
# User is using a deprecated env setting which was parsed by
# format_call.
# We check for a string type since module functions which
# allow setting the OS environ also make use of the "env"
# keyword argument, which is not a string
inject_globals['__env__'] = cdata['kwargs']['env']
elif '__env__' in low:
# The user is passing an alternative environment using __env__
# which is also not the appropriate choice, still, handle it
inject_globals['__env__'] = low['__env__']
else:
# Let's use the default environment
inject_globals['__env__'] = 'base'
if 'result' not in ret or ret['result'] is False:
with context.func_globals_inject(self.states[cdata['full']],
**inject_globals):
ret = self.states[cdata['full']](*cdata['args'],
**cdata['kwargs'])
if 'check_cmd' in low and '{0[state]}.mod_run_check_cmd'.format(low) not in self.states:
ret.update(self._run_check_cmd(low))
self.verify_ret(ret)
except Exception:
trb = traceback.format_exc()
# There are a number of possibilities to not have the cdata
# populated with what we might have expected, so just be enought
# smart to not raise another KeyError as the name is easily
# guessable and fallback in all cases to present the real
# exception to the user
if len(cdata['args']) > 0:
name = cdata['args'][0]
elif 'name' in cdata['kwargs']:
name = cdata['kwargs']['name']
else:
name = low.get('name', low.get('__id__'))
ret = {
'result': False,
'name': name,
'changes': {},
'comment': 'An exception occurred in this state: {0}'.format(
trb)
}
finally:
if low.get('__prereq__'):
sys.modules[self.states[cdata['full']].__module__].__opts__[
'test'] = test
# If format_call got any warnings, let's show them to the user
if 'warnings' in cdata:
ret.setdefault('warnings', []).extend(cdata['warnings'])
if 'provider' in low:
self.load_modules()
if low.get('__prereq__'):
low['__prereq__'] = False
return ret
ret['__run_num__'] = self.__run_num
self.__run_num += 1
format_log(ret)
self.check_refresh(low, ret)
finish_time = datetime.datetime.now()
ret['start_time'] = start_time.time().isoformat()
ret['duration'] = (finish_time - start_time).microseconds / 1000
log.info('Completed state [{0}] at time {1}'.format(low['name'], finish_time.time().isoformat()))
return ret
def call_chunks(self, chunks):
'''
Iterate over a list of chunks and call them, checking for requires.
'''
running = {}
for low in chunks:
if '__FAILHARD__' in running:
running.pop('__FAILHARD__')
return running
tag = _gen_tag(low)
if tag not in running:
running = self.call_chunk(low, running, chunks)
if self.check_failhard(low, running):
return running
self.active = set()
return running
def check_failhard(self, low, running):
'''
Check if the low data chunk should send a failhard signal
'''
tag = _gen_tag(low)
if (low.get('failhard', False) or self.opts['failhard']
and tag in running):
return not running[tag]['result']
return False
def check_requisite(self, low, running, chunks, pre=False):
'''
Look into the running data to check the status of all requisite
states
'''
present = False
# If mod_watch is not available make it a require
if 'watch' in low:
if '{0}.mod_watch'.format(low['state']) not in self.states:
if 'require' in low:
low['require'].extend(low.pop('watch'))
else:
low['require'] = low.pop('watch')
else:
present = True
if 'require' in low:
present = True
if 'prerequired' in low:
present = True
if 'prereq' in low:
present = True
if 'onfail' in low:
present = True
if 'onchanges' in low:
present = True
if not present:
return 'met'
reqs = {
'require': [],
'watch': [],
'prereq': [],
'onfail': [],
'onchanges': []}
if pre:
reqs['prerequired'] = []
for r_state in reqs:
if r_state in low and low[r_state] is not None:
for req in low[r_state]:
req = trim_req(req)
found = False
for chunk in chunks:
req_key = next(iter(req))
req_val = req[req_key]
if req_val is None:
continue
if (fnmatch.fnmatch(chunk['name'], req_val) or
fnmatch.fnmatch(chunk['__id__'], req_val)):
if chunk['state'] == req_key:
found = True
reqs[r_state].append(chunk)
elif req_key == 'sls':
# Allow requisite tracking of entire sls files
if fnmatch.fnmatch(chunk['__sls__'], req_val):
found = True
reqs[r_state].append(chunk)
if not found:
return 'unmet'
fun_stats = set()
for r_state, chunks in reqs.items():
if r_state == 'prereq':
run_dict = self.pre
else:
run_dict = running
for chunk in chunks:
tag = _gen_tag(chunk)
if tag not in run_dict:
fun_stats.add('unmet')
continue
if r_state == 'onfail':
if run_dict[tag]['result'] is True:
fun_stats.add('fail')
continue
else:
if run_dict[tag]['result'] is False:
fun_stats.add('fail')
continue
if r_state == 'onchanges':
if not run_dict[tag]['changes']:
fun_stats.add('fail')
continue
if r_state == 'watch' and run_dict[tag]['changes']:
fun_stats.add('change')
continue
if r_state == 'prereq' and run_dict[tag]['result'] is None:
fun_stats.add('premet')
if r_state == 'prereq' and not run_dict[tag]['result'] is None:
fun_stats.add('pre')
else:
fun_stats.add('met')
if 'unmet' in fun_stats:
return 'unmet'
elif 'fail' in fun_stats:
return 'fail'
elif 'pre' in fun_stats:
if 'premet' in fun_stats:
return 'met'
return 'pre'
elif 'change' in fun_stats:
return 'change'
return 'met'
def event(self, chunk_ret, length):
'''
Fire an event on the master bus
'''
if not self.opts.get('local') and self.opts.get('state_events', True) and self.opts.get('master_uri'):
ret = {'ret': chunk_ret,
'len': length}
tag = salt.utils.event.tagify(
[self.jid, 'prog', self.opts['id'], str(chunk_ret['__run_num__'])], 'job'
)
preload = {'jid': self.jid}
self.functions['event.fire_master'](ret, tag, preload=preload)
def call_chunk(self, low, running, chunks):
'''
Check if a chunk has any requires, execute the requires and then
the chunk
'''
low = self._mod_aggregate(low, running, chunks)
self._mod_init(low)
tag = _gen_tag(low)
if not low.get('prerequired'):
self.active.add(tag)
requisites = ['require', 'watch', 'prereq', 'onfail', 'onchanges']
if not low.get('__prereq__'):
requisites.append('prerequired')
status = self.check_requisite(low, running, chunks, True)
else:
status = self.check_requisite(low, running, chunks)
if status == 'unmet':
lost = {}
reqs = []
for requisite in requisites:
lost[requisite] = []
if requisite not in low:
continue
for req in low[requisite]:
req = trim_req(req)
found = False
for chunk in chunks:
req_key = next(iter(req))
req_val = req[req_key]
if req_val is None:
continue
if (fnmatch.fnmatch(chunk['name'], req_val) or
fnmatch.fnmatch(chunk['__id__'], req_val)):
if chunk['state'] == req_key:
if requisite == 'prereq':
chunk['__prereq__'] = True
elif requisite == 'prerequired':
chunk['__prerequired__'] = True
reqs.append(chunk)
found = True
elif req_key == 'sls':
# Allow requisite tracking of entire sls files
if fnmatch.fnmatch(chunk['__sls__'], req_val):
if requisite == 'prereq':
chunk['__prereq__'] = True
reqs.append(chunk)
found = True
if not found:
lost[requisite].append(req)
if lost['require'] or lost['watch'] or lost['prereq'] or lost['onfail'] or lost['onchanges'] or lost.get('prerequired'):
comment = 'The following requisites were not found:\n'
for requisite, lreqs in lost.items():
if not lreqs:
continue
comment += \
'{0}{1}:\n'.format(' ' * 19, requisite)
for lreq in lreqs:
req_key = next(iter(lreq))
req_val = lreq[req_key]
comment += \
'{0}{1}: {2}\n'.format(' ' * 23, req_key, req_val)
running[tag] = {'changes': {},
'result': False,
'comment': comment,
'__run_num__': self.__run_num,
'__sls__': low['__sls__']}
self.__run_num += 1
self.event(running[tag], len(chunks))
return running
for chunk in reqs:
# Check to see if the chunk has been run, only run it if
# it has not been run already
ctag = _gen_tag(chunk)
if ctag not in running:
if ctag in self.active:
if chunk.get('__prerequired__'):
# Prereq recusive, run this chunk with prereq on
if tag not in self.pre:
low['__prereq__'] = True
self.pre[ctag] = self.call(low, chunks, running)
return running
else:
return running
elif ctag not in running:
log.error('Recursive requisite found')
running[tag] = {
'changes': {},
'result': False,
'comment': 'Recursive requisite found',
'__run_num__': self.__run_num,
'__sls__': low['__sls__']}
self.__run_num += 1
self.event(running[tag], len(chunks))
return running
running = self.call_chunk(chunk, running, chunks)
if self.check_failhard(chunk, running):
running['__FAILHARD__'] = True
return running
if low.get('__prereq__'):
status = self.check_requisite(low, running, chunks)
self.pre[tag] = self.call(low, chunks, running)
if not self.pre[tag]['changes'] and status == 'change':
self.pre[tag]['changes'] = {'watch': 'watch'}
self.pre[tag]['result'] = None
else:
running = self.call_chunk(low, running, chunks)
if self.check_failhard(chunk, running):
running['__FAILHARD__'] = True
return running
elif status == 'met':
if low.get('__prereq__'):
self.pre[tag] = self.call(low, chunks, running)
else:
running[tag] = self.call(low, chunks, running)
elif status == 'fail':
running[tag] = {'changes': {},
'result': False,
'comment': 'One or more requisite failed',
'__run_num__': self.__run_num,
'__sls__': low['__sls__']}
self.__run_num += 1
elif status == 'change' and not low.get('__prereq__'):
ret = self.call(low, chunks, running)
if not ret['changes']:
low = low.copy()
low['sfun'] = low['fun']
low['fun'] = 'mod_watch'
ret = self.call(low, chunks, running)
running[tag] = ret
elif status == 'pre':
pre_ret = {'changes': {},
'result': True,
'comment': 'No changes detected',
'__run_num__': self.__run_num,
'__sls__': low['__sls__']}
running[tag] = pre_ret
self.pre[tag] = pre_ret
self.__run_num += 1
else:
if low.get('__prereq__'):
self.pre[tag] = self.call(low, chunks, running)
else:
running[tag] = self.call(low, chunks, running)
if tag in running:
self.event(running[tag], len(chunks))
return running
def call_high(self, high):
'''
Process a high data call and ensure the defined states.
'''
errors = []
# If there is extension data reconcile it
high, ext_errors = self.reconcile_extend(high)
errors += ext_errors
errors += self.verify_high(high)
if errors:
return errors
high, req_in_errors = self.requisite_in(high)
errors += req_in_errors
high = self.apply_exclude(high)
# Verify that the high data is structurally sound
if errors:
return errors
# Compile and verify the raw chunks
chunks = self.compile_high_data(high)
# If there are extensions in the highstate, process them and update
# the low data chunks
if errors:
return errors
ret = self.call_chunks(chunks)
return ret
def render_template(self, high, template):
errors = []
if not high:
return high, errors
if not isinstance(high, dict):
errors.append(
'Template {0} does not render to a dictionary'.format(template)
)
return high, errors
invalid_items = ('include', 'exclude', 'extends')
for item in invalid_items:
if item in high:
errors.append(
'The \'{0}\' declaration found on \'{1}\' is invalid when '
'rendering single templates'.format(item, template)
)
return high, errors
for name in high:
if not isinstance(high[name], dict):
if isinstance(high[name], string_types):
# Is this is a short state, it needs to be padded
if '.' in high[name]:
comps = high[name].split('.')
high[name] = {
#'__sls__': template,
#'__env__': None,
comps[0]: [comps[1]]
}
continue
errors.append(
'ID {0} in template {1} is not a dictionary'.format(
name, template
)
)
continue
skeys = set()
for key in sorted(high[name]):
if key.startswith('_'):
continue
if high[name][key] is None:
errors.append(
'ID {0!r} in template {1} contains a short '
'declaration ({2}) with a trailing colon. When not '
'passing any arguments to a state, the colon must be '
'omitted.'.format(name, template, key)
)
continue
if not isinstance(high[name][key], list):
continue
if '.' in key:
comps = key.split('.')
# Salt doesn't support state files such as:
#
# /etc/redis/redis.conf:
# file.managed:
# - user: redis
# - group: redis
# - mode: 644
# file.comment:
# - regex: ^requirepass
if comps[0] in skeys:
errors.append(
'ID {0!r} in template {1!r} contains multiple '
'state declarations of the same type'
.format(name, template)
)
continue
high[name][comps[0]] = high[name].pop(key)
high[name][comps[0]].append(comps[1])
skeys.add(comps[0])
continue
skeys.add(key)
return high, errors
def call_template(self, template):
'''
Enforce the states in a template
'''
high = compile_template(
template, self.rend, self.opts['renderer'])
if not high:
return high
high, errors = self.render_template(high, template)
if errors:
return errors
return self.call_high(high)
def call_template_str(self, template):
'''
Enforce the states in a template, pass the template as a string
'''
high = compile_template_str(
template, self.rend, self.opts['renderer'])
if not high:
return high
high, errors = self.render_template(high, '<template-str>')
if errors:
return errors
return self.call_high(high)
class BaseHighState(object):
'''
The BaseHighState is an abstract base class that is the foundation of
running a highstate, extend it and add a self.state object of type State.
When extending this class, please note that ``self.client`` and
``self.matcher`` should be instantiated and handled.
'''
def __init__(self, opts):
self.opts = self.__gen_opts(opts)
self.iorder = 10000
self.avail = self.__gather_avail()
self.serial = salt.payload.Serial(self.opts)
self.building_highstate = {}
def __gather_avail(self):
'''
Gather the lists of available sls data from the master
'''
avail = {}
for saltenv in self._get_envs():
avail[saltenv] = self.client.list_states(saltenv)
return avail
def __gen_opts(self, opts):
'''
The options used by the High State object are derived from options
on the minion and the master, or just the minion if the high state
call is entirely local.
'''
# If the state is intended to be applied locally, then the local opts
# should have all of the needed data, otherwise overwrite the local
# data items with data from the master
if 'local_state' in opts:
if opts['local_state']:
return opts
mopts = self.client.master_opts()
if not isinstance(mopts, dict):
# An error happened on the master
opts['renderer'] = 'yaml_jinja'
opts['failhard'] = False
opts['state_top'] = 'salt://top.sls'
opts['nodegroups'] = {}
opts['file_roots'] = {'base': [syspaths.BASE_FILE_ROOTS_DIR]}
else:
opts['renderer'] = mopts['renderer']
opts['failhard'] = mopts.get('failhard', False)
if mopts['state_top'].startswith('salt://'):
opts['state_top'] = mopts['state_top']
elif mopts['state_top'].startswith('/'):
opts['state_top'] = os.path.join('salt://', mopts['state_top'][1:])
else:
opts['state_top'] = os.path.join('salt://', mopts['state_top'])
opts['nodegroups'] = mopts.get('nodegroups', {})
opts['state_auto_order'] = mopts.get(
'state_auto_order',
opts['state_auto_order'])
opts['file_roots'] = mopts['file_roots']
opts['state_events'] = mopts.get('state_events')
opts['jinja_lstrip_blocks'] = mopts.get('jinja_lstrip_blocks', False)
opts['jinja_trim_blocks'] = mopts.get('jinja_trim_blocks', False)
return opts
def _get_envs(self):
'''
Pull the file server environments out of the master options
'''
envs = set(['base'])
if 'file_roots' in self.opts:
envs.update(list(self.opts['file_roots']))
return envs
def get_tops(self):
'''
Gather the top files
'''
tops = DefaultOrderedDict(list)
include = DefaultOrderedDict(list)
done = DefaultOrderedDict(list)
# Gather initial top files
if self.opts['environment']:
tops[self.opts['environment']] = [
compile_template(
self.client.cache_file(
self.opts['state_top'],
self.opts['environment']
),
self.state.rend,
self.state.opts['renderer'],
env=self.opts['environment']
)
]
else:
for saltenv in self._get_envs():
tops[saltenv].append(
compile_template(
self.client.cache_file(
self.opts['state_top'],
saltenv
),
self.state.rend,
self.state.opts['renderer'],
saltenv=saltenv
)
)
# Search initial top files for includes
for saltenv, ctops in tops.items():
for ctop in ctops:
if 'include' not in ctop:
continue
for sls in ctop['include']:
include[saltenv].append(sls)
ctop.pop('include')
# Go through the includes and pull out the extra tops and add them
while include:
pops = []
for saltenv, states in include.items():
pops.append(saltenv)
if not states:
continue
for sls_match in states:
for sls in fnmatch.filter(self.avail[saltenv], sls_match):
if sls in done[saltenv]:
continue
tops[saltenv].append(
compile_template(
self.client.get_state(
sls,
saltenv
).get('dest', False),
self.state.rend,
self.state.opts['renderer'],
saltenv=saltenv
)
)
done[saltenv].append(sls)
for saltenv in pops:
if saltenv in include:
include.pop(saltenv)
return tops
def merge_tops(self, tops):
'''
Cleanly merge the top files
'''
top = DefaultOrderedDict(OrderedDict)
for ctops in tops.values():
for ctop in ctops:
for saltenv, targets in ctop.items():
if saltenv == 'include':
continue
try:
for tgt in targets:
if tgt not in top[saltenv]:
top[saltenv][tgt] = ctop[saltenv][tgt]
continue
matches = []
states = set()
for comp in top[saltenv][tgt]:
if isinstance(comp, dict):
matches.append(comp)
if isinstance(comp, string_types):
states.add(comp)
top[saltenv][tgt] = matches
top[saltenv][tgt].extend(list(states))
except TypeError:
raise SaltRenderError('Unable to render top file. No targets found.')
return top
def verify_tops(self, tops):
'''
Verify the contents of the top file data
'''
errors = []
if not isinstance(tops, dict):
errors.append('Top data was not formed as a dict')
# No further checks will work, bail out
return errors
for saltenv, matches in tops.items():
if saltenv == 'include':
continue
if not isinstance(saltenv, string_types):
errors.append(
'Environment {0} in top file is not formed as a '
'string'.format(saltenv)
)
if saltenv == '':
errors.append('Empty saltenv statement in top file')
if not isinstance(matches, dict):
errors.append(
'The top file matches for saltenv {0} are not '
'formatted as a dict'.format(saltenv)
)
for slsmods in matches.values():
if not isinstance(slsmods, list):
errors.append('Malformed topfile (state declarations not '
'formed as a list)')
continue
for slsmod in slsmods:
if isinstance(slsmod, dict):
# This value is a match option
for val in slsmod.values():
if not val:
errors.append(
'Improperly formatted top file matcher '
'in saltenv {0}: {1} file'.format(
slsmod,
val
)
)
elif isinstance(slsmod, string_types):
# This is a sls module
if not slsmod:
errors.append(
'Environment {0} contains an empty sls '
'index'.format(saltenv)
)
return errors
def get_top(self):
'''
Returns the high data derived from the top file
'''
tops = self.get_tops()
return self.merge_tops(tops)
def top_matches(self, top):
'''
Search through the top high data for matches and return the states
that this minion needs to execute.
Returns:
{'saltenv': ['state1', 'state2', ...]}
'''
matches = {}
# pylint: disable=cell-var-from-loop
for saltenv, body in top.items():
if self.opts['environment']:
if saltenv != self.opts['environment']:
continue
for match, data in body.items():
def _filter_matches(_match, _data, _opts):
if isinstance(_data, string_types):
_data = [_data]
if self.matcher.confirm_top(
_match,
_data,
_opts
):
if saltenv not in matches:
matches[saltenv] = []
for item in _data:
if 'subfilter' in item:
_tmpdata = item.pop('subfilter')
for match, data in _tmpdata.items():
_filter_matches(match, data, _opts)
if isinstance(item, string_types):
matches[saltenv].append(item)
_filter_matches(match, data, self.opts['nodegroups'])
ext_matches = self.client.ext_nodes()
for saltenv in ext_matches:
if saltenv in matches:
matches[saltenv] = list(
set(ext_matches[saltenv]).union(matches[saltenv]))
else:
matches[saltenv] = ext_matches[saltenv]
# pylint: enable=cell-var-from-loop
return matches
def load_dynamic(self, matches):
'''
If autoload_dynamic_modules is True then automatically load the
dynamic modules
'''
if not self.opts['autoload_dynamic_modules']:
return
if self.opts.get('local', False):
syncd = self.state.functions['saltutil.sync_all'](list(matches),
refresh=False)
else:
syncd = self.state.functions['saltutil.sync_all'](list(matches),
refresh=False)
if syncd['grains']:
self.opts['grains'] = salt.loader.grains(self.opts)
self.state.opts['pillar'] = self.state._gather_pillar()
self.state.module_refresh()
def render_state(self, sls, saltenv, mods, matches):
'''
Render a state file and retrieve all of the include states
'''
err = ''
errors = []
state_data = self.client.get_state(sls, saltenv)
fn_ = state_data.get('dest', False)
if not fn_:
errors.append(
'Specified SLS {0} in saltenv {1} is not '
'available on the salt master'.format(sls, saltenv)
)
state = None
try:
state = compile_template(
fn_, self.state.rend, self.state.opts['renderer'], saltenv,
sls, rendered_sls=mods
)
except SaltRenderError as exc:
msg = 'Rendering SLS \'{0}:{1}\' failed: {2}'.format(
saltenv, sls, exc
)
log.critical(msg)
errors.append(msg)
except Exception as exc:
msg = 'Rendering SLS {0} failed, render error: {1}'.format(
sls, exc
)
log.critical(
msg,
# Show the traceback if the debug logging level is enabled
exc_info=log.isEnabledFor(logging.DEBUG)
)
errors.append('{0}\n{1}'.format(msg, traceback.format_exc()))
mods.add('{0}:{1}'.format(saltenv, sls))
if state:
if not isinstance(state, dict):
errors.append(
'SLS {0} does not render to a dictionary'.format(sls)
)
else:
include = []
if 'include' in state:
if not isinstance(state['include'], list):
err = ('Include Declaration in SLS {0} is not formed '
'as a list'.format(sls))
errors.append(err)
else:
include = state.pop('include')
self._handle_extend(state, sls, saltenv, errors)
self._handle_exclude(state, sls, saltenv, errors)
self._handle_state_decls(state, sls, saltenv, errors)
for inc_sls in include:
# inc_sls may take the form of:
# 'sls.to.include' <- same as {<saltenv>: 'sls.to.include'}
# {<env_key>: 'sls.to.include'}
# {'_xenv': 'sls.to.resolve'}
xenv_key = '_xenv'
if isinstance(inc_sls, dict):
env_key, inc_sls = inc_sls.popitem()
else:
env_key = saltenv
if env_key not in self.avail:
msg = ('Nonexistant saltenv {0!r} found in include '
'of {1!r} within SLS \'{2}:{3}\''
.format(env_key, inc_sls, saltenv, sls))
log.error(msg)
errors.append(msg)
continue
if inc_sls.startswith('.'):
p_comps = sls.split('.')
if state_data.get('source', '').endswith('/init.sls'):
inc_sls = sls + inc_sls
else:
inc_sls = '.'.join(p_comps[:-1]) + inc_sls
if env_key != xenv_key:
# Resolve inc_sls in the specified environment
if env_key in matches or fnmatch.filter(self.avail[env_key], inc_sls):
resolved_envs = [env_key]
else:
resolved_envs = []
else:
# Resolve inc_sls in the subset of environment matches
resolved_envs = [
aenv for aenv in matches
if fnmatch.filter(self.avail[aenv], inc_sls)
]
# An include must be resolved to a single environment, or
# the include must exist in the current environment
if len(resolved_envs) == 1 or saltenv in resolved_envs:
# Match inc_sls against the available states in the
# resolved env, matching wildcards in the process. If
# there were no matches, then leave inc_sls as the
# target so that the next recursion of render_state
# will recognize the error.
sls_targets = fnmatch.filter(
self.avail[saltenv],
inc_sls
) or [inc_sls]
for sls_target in sls_targets:
r_env = resolved_envs[0] if len(resolved_envs) == 1 else saltenv
mod_tgt = '{0}:{1}'.format(r_env, sls_target)
if mod_tgt not in mods:
nstate, err = self.render_state(
sls_target,
r_env,
mods,
matches
)
if nstate:
self.merge_included_states(state, nstate, errors)
state.update(nstate)
if err:
errors.extend(err)
else:
msg = ''
if not resolved_envs:
msg = ('Unknown include: Specified SLS {0}: {1} is not available on the salt '
'master in saltenv(s): {2} '
).format(env_key,
inc_sls,
', '.join(matches) if env_key == xenv_key else env_key)
elif len(resolved_envs) > 1:
msg = ('Ambiguous include: Specified SLS {0}: {1} is available on the salt master '
'in multiple available saltenvs: {2}'
).format(env_key,
inc_sls,
', '.join(resolved_envs))
log.critical(msg)
errors.append(msg)
self._handle_iorder(state)
else:
state = {}
return state, errors
def _handle_iorder(self, state):
'''
Take a state and apply the iorder system
'''
if self.opts['state_auto_order']:
for name in state:
for s_dec in state[name]:
if not isinstance(s_dec, string_types):
# PyDSL OrderedDict?
continue
if not isinstance(state[name], dict):
# Include's or excludes as lists?
continue
if not isinstance(state[name][s_dec], list):
# Bad syntax, let the verify seq pick it up later on
continue
found = False
if s_dec.startswith('_'):
continue
for arg in state[name][s_dec]:
if isinstance(arg, dict):
if len(arg) > 0:
if arg.keys()[0] == 'order':
found = True
if not found:
if not isinstance(state[name][s_dec], list):
# quite certainly a syntax error, managed elsewhere
continue
state[name][s_dec].append(
{'order': self.iorder}
)
self.iorder += 1
return state
def _handle_state_decls(self, state, sls, saltenv, errors):
'''
Add sls and saltenv components to the state
'''
for name in state:
if not isinstance(state[name], dict):
if name == '__extend__':
continue
if name == '__exclude__':
continue
if isinstance(state[name], string_types):
# Is this is a short state, it needs to be padded
if '.' in state[name]:
comps = state[name].split('.')
state[name] = {'__sls__': sls,
'__env__': saltenv,
comps[0]: [comps[1]]}
continue
errors.append(
'ID {0} in SLS {1} is not a dictionary'.format(name, sls)
)
continue
skeys = set()
for key in state[name]:
if key.startswith('_'):
continue
if not isinstance(state[name][key], list):
continue
if '.' in key:
comps = key.split('.')
# Salt doesn't support state files such as:
#
# /etc/redis/redis.conf:
# file.managed:
# - source: salt://redis/redis.conf
# - user: redis
# - group: redis
# - mode: 644
# file.comment:
# - regex: ^requirepass
if comps[0] in skeys:
errors.append(
'ID {0!r} in SLS {1!r} contains multiple state '
'declarations of the same type'.format(name, sls)
)
continue
state[name][comps[0]] = state[name].pop(key)
state[name][comps[0]].append(comps[1])
skeys.add(comps[0])
continue
skeys.add(key)
if '__sls__' not in state[name]:
state[name]['__sls__'] = sls
if '__env__' not in state[name]:
state[name]['__env__'] = saltenv
def _handle_extend(self, state, sls, saltenv, errors):
'''
Take the extend dec out of state and apply to the highstate global
dec
'''
if 'extend' in state:
ext = state.pop('extend')
if not isinstance(ext, dict):
errors.append(('Extension value in SLS {0!r} is not a '
'dictionary').format(sls))
return
for name in ext:
if not isinstance(ext[name], dict):
errors.append(('Extension name {0!r} in SLS {1!r} is '
'not a dictionary'
.format(name, sls)))
continue
if '__sls__' not in ext[name]:
ext[name]['__sls__'] = sls
if '__env__' not in ext[name]:
ext[name]['__env__'] = saltenv
for key in ext[name]:
if key.startswith('_'):
continue
if not isinstance(ext[name][key], list):
continue
if '.' in key:
comps = key.split('.')
ext[name][comps[0]] = ext[name].pop(key)
ext[name][comps[0]].append(comps[1])
state.setdefault('__extend__', []).append(ext)
def _handle_exclude(self, state, sls, saltenv, errors):
'''
Take the exclude dec out of the state and apply it to the highstate
global dec
'''
if 'exclude' in state:
exc = state.pop('exclude')
if not isinstance(exc, list):
err = ('Exclude Declaration in SLS {0} is not formed '
'as a list'.format(sls))
errors.append(err)
state.setdefault('__exclude__', []).extend(exc)
def render_highstate(self, matches):
'''
Gather the state files and render them into a single unified salt
high data structure.
'''
highstate = self.building_highstate
all_errors = []
mods = set()
for saltenv, states in matches.items():
for sls_match in states:
statefiles = fnmatch.filter(self.avail[saltenv], sls_match)
# if we did not found any sls in the fileserver listing, this
# may be because the sls was generated or added later, we can
# try to directly execute it, and if it fails, anyway it will
# return the former error
if not statefiles:
statefiles = [sls_match]
for sls in statefiles:
r_env = '{0}:{1}'.format(saltenv, sls)
if r_env in mods:
continue
state, errors = self.render_state(
sls, saltenv, mods, matches)
if state:
self.merge_included_states(highstate, state, errors)
for i, error in enumerate(errors[:]):
if 'is not available on the salt master' in error:
# match SLS foobar in environment
this_sls = 'SLS {0} in saltenv'.format(
sls_match)
if this_sls in error:
errors[i] = (
'No matching sls found for {0!r} '
'in env {1!r}'.format(sls_match, saltenv))
all_errors.extend(errors)
self.clean_duplicate_extends(highstate)
return highstate, all_errors
def clean_duplicate_extends(self, highstate):
if '__extend__' in highstate:
highext = []
for items in (ext.items() for ext in highstate['__extend__']):
for item in items:
if item not in highext:
highext.append(item)
highstate['__extend__'] = [{t[0]: t[1]} for t in highext]
def merge_included_states(self, highstate, state, errors):
# The extend members can not be treated as globally unique:
if '__extend__' in state:
highstate.setdefault('__extend__',
[]).extend(state.pop('__extend__'))
if '__exclude__' in state:
highstate.setdefault('__exclude__',
[]).extend(state.pop('__exclude__'))
for id_ in state:
if id_ in highstate:
if highstate[id_] != state[id_]:
errors.append((
'Detected conflicting IDs, SLS'
' IDs need to be globally unique.\n The'
' conflicting ID is {0!r} and is found in SLS'
' \'{1}:{2}\' and SLS \'{3}:{4}\'').format(
id_,
highstate[id_]['__env__'],
highstate[id_]['__sls__'],
state[id_]['__env__'],
state[id_]['__sls__'])
)
try:
highstate.update(state)
except ValueError:
errors.append(
'Error when rendering state with contents: {0}'.format(state)
)
def _check_pillar(self, force=False):
'''
Check the pillar for errors, refuse to run the state if there are
errors in the pillar and return the pillar errors
'''
if force:
return True
if '_errors' in self.state.opts['pillar']:
return False
return True
def call_highstate(self, exclude=None, cache=None, cache_name='highstate',
force=False):
'''
Run the sequence to execute the salt highstate for this minion
'''
# Check that top file exists
tag_name = 'no_|-states_|-states_|-None'
ret = {tag_name: {
'result': False,
'comment': 'No states found for this minion',
'name': 'No States',
'changes': {},
'__run_num__': 0,
}}
cfn = os.path.join(
self.opts['cachedir'],
'{0}.cache.p'.format(cache_name)
)
if cache:
if os.path.isfile(cfn):
with salt.utils.fopen(cfn, 'rb') as fp_:
high = self.serial.load(fp_)
return self.state.call_high(high)
# File exists so continue
err = []
try:
top = self.get_top()
except SaltRenderError as err:
ret[tag_name]['comment'] = err.error
return ret
except Exception:
trb = traceback.format_exc()
err.append(trb)
return err
err += self.verify_tops(top)
matches = self.top_matches(top)
if not matches:
msg = ('No Top file or external nodes data matches found')
ret[tag_name]['comment'] = msg
return ret
self.load_dynamic(matches)
if not self._check_pillar(force):
err += ['Pillar failed to render with the following messages:']
err += self.state.opts['pillar']['_errors']
else:
high, errors = self.render_highstate(matches)
if exclude:
if isinstance(exclude, str):
exclude = exclude.split(',')
if '__exclude__' in high:
high['__exclude__'].extend(exclude)
else:
high['__exclude__'] = exclude
err += errors
if err:
return err
if not high:
return ret
cumask = os.umask(077)
try:
if salt.utils.is_windows():
# Make sure cache file isn't read-only
self.state.functions['cmd.run']('attrib -R "{0}"'.format(cfn), output_loglevel='quiet')
with salt.utils.fopen(cfn, 'w+b') as fp_:
try:
self.serial.dump(high, fp_)
except TypeError:
# Can't serialize pydsl
pass
except (IOError, OSError):
msg = 'Unable to write to "state.highstate" cache file {0}'
log.error(msg.format(cfn))
os.umask(cumask)
return self.state.call_high(high)
def compile_highstate(self):
'''
Return just the highstate or the errors
'''
err = []
top = self.get_top()
err += self.verify_tops(top)
matches = self.top_matches(top)
high, errors = self.render_highstate(matches)
err += errors
if err:
return err
return high
def compile_low_chunks(self):
'''
Compile the highstate but don't run it, return the low chunks to
see exactly what the highstate will execute
'''
top = self.get_top()
matches = self.top_matches(top)
high, errors = self.render_highstate(matches)
# If there is extension data reconcile it
high, ext_errors = self.state.reconcile_extend(high)
errors += ext_errors
# Verify that the high data is structurally sound
errors += self.state.verify_high(high)
high, req_in_errors = self.state.requisite_in(high)
errors += req_in_errors
high = self.state.apply_exclude(high)
if errors:
return errors
# Compile and verify the raw chunks
chunks = self.state.compile_high_data(high)
return chunks
class HighState(BaseHighState):
'''
Generate and execute the salt "High State". The High State is the
compound state derived from a group of template files stored on the
salt master or in the local cache.
'''
# a stack of active HighState objects during a state.highstate run
stack = []
def __init__(self, opts, pillar=None, jid=None):
self.client = salt.fileclient.get_file_client(opts)
BaseHighState.__init__(self, opts)
self.state = State(self.opts, pillar, jid)
self.matcher = salt.minion.Matcher(self.opts)
# tracks all pydsl state declarations globally across sls files
self._pydsl_all_decls = {}
# a stack of current rendering Sls objects, maintained and used by the pydsl renderer.
self._pydsl_render_stack = []
def push_active(self):
self.stack.append(self)
@classmethod
def pop_active(cls):
cls.stack.pop()
@classmethod
def get_active(cls):
try:
return cls.stack[-1]
except IndexError:
return None
class MasterState(State):
'''
Create a State object for master side compiling
'''
def __init__(self, opts, minion):
State.__init__(self, opts)
def load_modules(self, data=None):
'''
Load the modules into the state
'''
log.info('Loading fresh modules for state activity')
# Load a modified client interface that looks like the interface used
# from the minion, but uses remote execution
#
self.functions = salt.client.FunctionWrapper(
self.opts,
self.opts['id']
)
# Load the states, but they should not be used in this class apart
# from inspection
self.states = salt.loader.states(self.opts, self.functions)
self.rend = salt.loader.render(self.opts, self.functions, states=self.states)
class MasterHighState(HighState):
'''
Execute highstate compilation from the master
'''
def __init__(self, master_opts, minion_opts, grains, id_,
saltenv=None,
env=None):
if isinstance(env, string_types):
salt.utils.warn_until(
'Boron',
'Passing a salt environment should be done using \'saltenv\' '
'not \'env\'. This functionality will be removed in Salt '
'Boron.'
)
# Backwards compatibility
saltenv = env
# Force the fileclient to be local
opts = copy.deepcopy(minion_opts)
opts['file_client'] = 'local'
opts['file_roots'] = master_opts['master_roots']
opts['renderer'] = master_opts['renderer']
opts['state_top'] = master_opts['state_top']
opts['id'] = id_
opts['grains'] = grains
HighState.__init__(self, opts)
class RemoteHighState(object):
'''
Manage gathering the data from the master
'''
def __init__(self, opts, grains):
self.opts = opts
self.grains = grains
self.serial = salt.payload.Serial(self.opts)
# self.auth = salt.crypt.SAuth(opts)
self.sreq = salt.transport.Channel.factory(self.opts['master_uri'])
def compile_master(self):
'''
Return the state data from the master
'''
load = {'grains': self.grains,
'opts': self.opts,
'cmd': '_master_state'}
try:
return self.sreq.send(load, tries=3, timeout=72000)
# return self.auth.crypticle.loads(self.sreq.send(
# 'aes',
# self.auth.crypticle.dumps(load),
# 3,
# 72000))
except SaltReqTimeoutError:
return {}
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