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Finishing touches on template cleanup.

Browse Source
pull/4581/head
Michael DeHaan 11 years ago
parent 1e85c7544b
commit 5031104c3a
3 changed files with 71 additions and 47 deletions
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19
lib/ansible/runner/__init__.py
Unescape Escape View File

@ -71,11 +71,6 @@ def _executor_hook(job_queue, result_queue, new_stdin):
host = job_queue.get(block=False)
return_data = multiprocessing_runner._executor(host, new_stdin)
result_queue.put(return_data)
if 'LEGACY_TEMPLATE_WARNING' in return_data.flags:
# pass data back up across the multiprocessing fork boundary
template.Flags.LEGACY_TEMPLATE_WARNING = True
except Queue.Empty:
pass
except:
@ -371,15 +366,6 @@ class Runner(object):
def _executor(self, host, new_stdin):
''' handler for multiprocessing library '''
def get_flags():
# flags are a way of passing arbitrary event information
# back up the chain, since multiprocessing forks and doesn't
# allow state exchange
flags = []
if template.Flags.LEGACY_TEMPLATE_WARNING:
flags.append('LEGACY_TEMPLATE_WARNING')
return flags
try:
if not new_stdin:
self._new_stdin = os.fdopen(os.dup(sys.stdin.fileno()))
@ -389,7 +375,6 @@ class Runner(object):
exec_rc = self._executor_internal(host, new_stdin)
if type(exec_rc) != ReturnData:
raise Exception("unexpected return type: %s" % type(exec_rc))
exec_rc.flags = get_flags()
# redundant, right?
if not exec_rc.comm_ok:
self.callbacks.on_unreachable(host, exec_rc.result)
@ -397,11 +382,11 @@ class Runner(object):
except errors.AnsibleError, ae:
msg = str(ae)
self.callbacks.on_unreachable(host, msg)
return ReturnData(host=host, comm_ok=False, result=dict(failed=True, msg=msg), flags=get_flags())
return ReturnData(host=host, comm_ok=False, result=dict(failed=True, msg=msg))
except Exception:
msg = traceback.format_exc()
self.callbacks.on_unreachable(host, msg)
return ReturnData(host=host, comm_ok=False, result=dict(failed=True, msg=msg), flags=get_flags())
return ReturnData(host=host, comm_ok=False, result=dict(failed=True, msg=msg))
# *****************************************************

85
lib/ansible/utils/template.py
Unescape Escape View File

@ -70,9 +70,6 @@ def _get_extensions():
return jinja_exts
class Flags:
LEGACY_TEMPLATE_WARNING = False
# TODO: refactor this file
FILTER_PLUGINS = None
@ -97,10 +94,13 @@ def _legacy_varFindLimitSpace(basedir, vars, space, part, lookup_fatal, depth, e
templating for part and a few more things
DEPRECATED
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.6
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.5
use {{ foo }} INSTEAD
'''
if not C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES:
raise Exception("we should not be here")
# Previous part couldn't be found, nothing to limit to
if space is None:
return space
@ -153,14 +153,14 @@ def _legacy_varFind(basedir, text, vars, lookup_fatal, depth, expand_lists):
original data in the caller.
DEPRECATED
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.6
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.5
use {{ foo }} INSTEAD
'''
# short circuit this whole function if we have specified we don't want
# legacy var replacement
if C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES == False:
return None
if not C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES:
raise Exception("we should not be here")
start = text.find("$")
if start == -1:
@ -271,10 +271,13 @@ def legacy_varReplace(basedir, raw, vars, lookup_fatal=True, depth=0, expand_lis
''' Perform variable replacement of $variables in string raw using vars dictionary
DEPRECATED
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.6
LEGACY VARIABLES ARE SLATED FOR REMOVAL IN ANSIBLE 1.5
use {{ foo }} INSTEAD
'''
if not C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES:
raise Exception("we should not be here")
# this code originally from yum (and later modified a lot)
orig = raw
@ -313,17 +316,26 @@ def legacy_varReplace(basedir, raw, vars, lookup_fatal=True, depth=0, expand_lis
if result != orig:
from ansible import utils
utils.deprecated("Legacy variable subsitution, such as using ${foo} or $foo instead of {{ foo }} is currently valid but will be phased out and has been out of favor since version 1.2. This is the last of legacy features on our deprecation list. You may continue to use this if you have specific needs for now","1.6")
utils.deprecated("Legacy variable subsitution, such as using ${foo} or $foo instead of {{ foo }} is currently valid but will be phased out and has been out of favor since version 1.2. This is the last of legacy features on our deprecation list. You may continue to use this if you have specific needs for now","1.5")
return result
def template(basedir, input_value, vars, lookup_fatal=True, depth=-1, expand_lists=True, convert_bare=False):
def template(basedir, input_value, vars, lookup_fatal=True, depth=-1, expand_lists=True, convert_bare=False, fail_on_undefined=False, filter_fatal=True):
last_time = input_value
result = None
changed = True
while changed:
result = _template(
basedir, last_time, vars, lookup_fatal=lookup_fatal, depth=depth, expand_lists=expand_lists, convert_bare=convert_bare)
basedir,
last_time,
vars,
lookup_fatal=lookup_fatal,
depth=depth,
expand_lists=expand_lists,
convert_bare=convert_bare,
fail_on_undefined=fail_on_undefined,
filter_fatal=filter_fatal,
)
if last_time != result:
changed = True
else:
@ -334,7 +346,7 @@ def template(basedir, input_value, vars, lookup_fatal=True, depth=-1, expand_lis
raise errors.AnsibleError("template recursion depth exceeded")
return result
def template(basedir, varname, vars, lookup_fatal=True, depth=0, expand_lists=True, convert_bare=False, fail_on_undefined=False, filter_fatal=True):
def _template(basedir, varname, vars, lookup_fatal=True, depth=0, expand_lists=True, convert_bare=False, fail_on_undefined=False, filter_fatal=True):
''' templates a data structure by traversing it and substituting for other data structures '''
try:
@ -346,24 +358,25 @@ def template(basedir, varname, vars, lookup_fatal=True, depth=0, expand_lists=Tr
if isinstance(varname, basestring):
if '{{' in varname or '{%' in varname:
varname = template_from_string(basedir, varname, vars, fail_on_undefined)
if not '$' in varname:
if not C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES:
return varname
if not '$' in varname:
return varname
m = _legacy_varFind(basedir, varname, vars, lookup_fatal, depth, expand_lists)
if not m:
return varname
if m['start'] == 0 and m['end'] == len(varname):
if m['replacement'] is not None:
Flags.LEGACY_TEMPLATE_WARNING = True
return template(basedir, m['replacement'], vars, lookup_fatal, depth, expand_lists)
else:
return varname
else:
Flags.LEGACY_TEMPLATE_WARNING = True
return legacy_varReplace(basedir, varname, vars, lookup_fatal, depth, expand_lists)
elif isinstance(varname, (list, tuple)):
return [template(basedir, v, vars, lookup_fatal, depth, expand_lists, fail_on_undefined=fail_on_undefined) for v in varname]
return [ template(basedir, v, vars, lookup_fatal, depth, expand_lists, fail_on_undefined=fail_on_undefined) for v in varname]
elif isinstance(varname, dict):
d = {}
for (k, v) in varname.iteritems():
@ -371,6 +384,7 @@ def template(basedir, varname, vars, lookup_fatal=True, depth=0, expand_lists=Tr
return d
else:
return varname
except errors.AnsibleFilterError:
if filter_fatal:
raise
@ -394,7 +408,6 @@ def template_from_file(basedir, path, vars):
environment.filters.update(_get_filters())
environment.globals['lookup'] = my_lookup
if fail_on_undefined:
print "DEBUG: fail on undefined is engaged"
environment.undefined = StrictUndefined
try:
@ -414,7 +427,6 @@ def template_from_file(basedir, path, vars):
(key,val) = pair.split(':')
setattr(environment,key.strip(),ast.literal_eval(val.strip()))
t = environment.from_string(data)
vars = vars.copy()
try:
template_uid = pwd.getpwuid(os.stat(realpath).st_uid).pw_name
@ -439,9 +451,16 @@ def template_from_file(basedir, path, vars):
)
try:
t = environment.from_string(data)
res = t.render(vars)
except jinja2.exceptions.UndefinedError, e:
raise errors.AnsibleUndefinedVariable("One or more undefined variables: %s" % str(e))
except TemplateSyntaxError, e:
# Throw an exception which includes a more user friendly error message
values = dict(name=realpath, lineno=e.lineno, error=str(e))
msg = 'file: %(name)s, line number: %(lineno)s, error: %(error)s' % values
error = errors.AnsibleError(msg)
raise error
if data.endswith('\n') and not res.endswith('\n'):
res = res + '\n'
@ -450,13 +469,28 @@ def template_from_file(basedir, path, vars):
def template_from_string(basedir, data, vars, fail_on_undefined=False):
''' run a string through the (Jinja2) templating engine '''
def my_lookup(*args, **kwargs):
kwargs['vars'] = vars
return lookup(*args, basedir=basedir, **kwargs)
if type(data) == str:
data = unicode(data, 'utf-8')
environment = jinja2.Environment(trim_blocks=True, undefined=StrictUndefined, extensions=_get_extensions())
environment.filters.update(_get_filters())
if '_original_file' in vars:
basedir = os.path.dirname(vars['_original_file'])
filesdir = os.path.abspath(os.path.join(basedir, '..', 'files'))
if os.path.exists(filesdir):
basedir = filesdir
# TODO: may need some way of using lookup plugins here seeing we aren't calling
# the legacy engine, lookup() as a function, perhaps?
if type(data) == str:
data = unicode(data, 'utf-8')
environment = jinja2.Environment(trim_blocks=True, undefined=StrictUndefined, extensions=_get_extensions())
environment.filters.update(_get_filters())
if fail_on_undefined:
print "DEBUG: fail on undefined is engaged, 2"
environment.undefined = StrictUndefined
if '_original_file' in vars:
basedir = os.path.dirname(vars['_original_file'])
@ -467,6 +501,7 @@ def template_from_string(basedir, data, vars, fail_on_undefined=False):
# TODO: may need some way of using lookup plugins here seeing we aren't calling
# the legacy engine, lookup() as a function, perhaps?
data = data.decode('utf-8')
try:
t = environment.from_string(data)
except Exception, e:
@ -475,19 +510,11 @@ def template_from_string(basedir, data, vars, fail_on_undefined=False):
else:
return data
def my_lookup(*args, **kwargs):
kwargs['vars'] = vars
return lookup(*args, basedir=basedir, **kwargs)
t.globals['lookup'] = my_lookup
try:
return t.render(vars)
except jinja2.exceptions.UndefinedError:
if fail_on_undefined:
raise
else:
# this shouldn't happen due to undeclared check above
return data

12
test/TestUtils.py
Unescape Escape View File

@ -9,6 +9,7 @@ from nose.plugins.skip import SkipTest
import ansible.utils
import ansible.utils.template as template2
import ansible.constants as C
class TestUtils(unittest.TestCase):
@ -16,6 +17,10 @@ class TestUtils(unittest.TestCase):
### varReplace function tests
def test_varReplace_var_complex_var(self):
old_setting = C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES
C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES = True
vars = {
'x': '$y',
'y': {
@ -26,6 +31,8 @@ class TestUtils(unittest.TestCase):
res = template2.template(None, template, vars)
assert res == 'result'
C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES = old_setting
#####################################
### template_ds function tests
@ -53,6 +60,9 @@ class TestUtils(unittest.TestCase):
],
}
old_setting = C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES
C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES = True
template = '${data.var}'
res = template2.template(None, template, vars)
assert sorted(res) == sorted(vars['data']['var'])
@ -69,6 +79,8 @@ class TestUtils(unittest.TestCase):
res = template2.template(None, template, vars)
assert res == template
C.DEFAULT_LEGACY_PLAYBOOK_VARIABLES = old_setting
#####################################
### Template function tests

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