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Refactor play._update_vars_files_for_host to make common functions and easier debugging

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Fixes #4883
This commit is contained in:
James Tanner 2014-04-10 13:43:59 -04:00
parent 5ce6c86595
commit 4eb626825b
1 changed files with 60 additions and 43 deletions
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103
lib/ansible/playbook/play.py
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@ -130,7 +130,6 @@ class Play(object):
self.max_fail_pct = int(ds.get('max_fail_percentage', 100))
self.su = ds.get('su', self.playbook.su)
self.su_user = ds.get('su_user', self.playbook.su_user)
#self.vault_password = vault_password
# gather_facts is not a simple boolean, as None means that a 'smart'
# fact gathering mode will be used, so we need to be careful here as
@ -763,45 +762,81 @@ class Play(object):
def _update_vars_files_for_host(self, host, vault_password=None):
def generate_filenames(host, inject, filename):
""" Render the raw filename into 3 forms """
filename2 = template(self.basedir, filename, self.vars)
filename3 = filename2
if host is not None:
filename3 = template(self.basedir, filename2, inject)
if self._has_vars_in(filename3) and host is not None:
# allow play scoped vars and host scoped vars to template the filepath
inject.update(self.vars)
filename4 = template(self.basedir, filename3, inject)
filename4 = utils.path_dwim(self.basedir, filename4)
else:
filename4 = utils.path_dwim(self.basedir, filename3)
return filename2, filename3, filename4
def update_vars_cache(host, inject, data, filename):
""" update a host's varscache with new var data """
data = utils.combine_vars(inject, data)
self.playbook.VARS_CACHE[host].update(data)
self.playbook.callbacks.on_import_for_host(host, filename4)
def process_files(filename, filename2, filename3, filename4, host=None):
""" pseudo-algorithm for deciding where new vars should go """
data = utils.parse_yaml_from_file(filename4, vault_password=self.vault_password)
if data:
if type(data) != dict:
raise errors.AnsibleError("%s must be stored as a dictionary/hash" % filename4)
if host is not None:
if self._has_vars_in(filename2) and not self._has_vars_in(filename3):
# running a host specific pass and has host specific variables
# load into setup cache
update_vars_cache(host, inject, data, filename4)
elif self._has_vars_in(filename3) and not self._has_vars_in(filename4):
# handle mixed scope variables in filepath
update_vars_cache(host, inject, data, filename4)
elif not self._has_vars_in(filename4):
# found a non-host specific variable, load into vars and NOT
# the setup cache
if host is not None:
self.vars.update(data)
else:
self.vars = utils.combine_vars(self.vars, data)
# Enforce that vars_files is always a list
if type(self.vars_files) != list:
self.vars_files = [ self.vars_files ]
# Build an inject if this is a host run started by self.update_vars_files
if host is not None:
inject = {}
inject.update(self.playbook.inventory.get_variables(host, vault_password=vault_password))
inject.update(self.playbook.SETUP_CACHE.get(host, {}))
inject.update(self.playbook.VARS_CACHE.get(host, {}))
else:
inject = None
for filename in self.vars_files:
if type(filename) == list:
# loop over all filenames, loading the first one, and failing if # none found
# loop over all filenames, loading the first one, and failing if none found
found = False
sequence = []
for real_filename in filename:
filename2 = template(self.basedir, real_filename, self.vars)
filename3 = filename2
if host is not None:
filename3 = template(self.basedir, filename2, inject)
filename4 = utils.path_dwim(self.basedir, filename3)
filename2, filename3, filename4 = generate_filenames(host, inject, real_filename)
sequence.append(filename4)
if os.path.exists(filename4):
found = True
data = utils.parse_yaml_from_file(filename4, vault_password=self.vault_password)
if type(data) != dict:
raise errors.AnsibleError("%s must be stored as a dictionary/hash" % filename4)
if host is not None:
if self._has_vars_in(filename2) and not self._has_vars_in(filename3):
# this filename has variables in it that were fact specific
# so it needs to be loaded into the per host VARS_CACHE
data = utils.combine_vars(inject, data)
self.playbook.VARS_CACHE[host].update(data)
self.playbook.callbacks.on_import_for_host(host, filename4)
elif not self._has_vars_in(filename4):
# found a non-host specific variable, load into vars and NOT
# the setup cache
self.vars.update(data)
process_files(filename, filename2, filename3, filename4, host=host)
elif host is not None:
self.playbook.callbacks.on_not_import_for_host(host, filename4)
if found:
@ -813,28 +848,10 @@ class Play(object):
else:
# just one filename supplied, load it!
filename2 = template(self.basedir, filename, self.vars)
filename3 = filename2
if host is not None:
filename3 = template(self.basedir, filename2, inject)
filename4 = utils.path_dwim(self.basedir, filename3)
filename2, filename3, filename4 = generate_filenames(host, inject, filename)
if self._has_vars_in(filename4):
continue
new_vars = utils.parse_yaml_from_file(filename4, vault_password=self.vault_password)
if new_vars:
if type(new_vars) != dict:
raise errors.AnsibleError("%s must be stored as dictionary/hash: %s" % (filename4, type(new_vars)))
if host is not None and self._has_vars_in(filename2) and not self._has_vars_in(filename3):
# running a host specific pass and has host specific variables
# load into setup cache
new_vars = utils.combine_vars(inject, new_vars)
self.playbook.VARS_CACHE[host] = utils.combine_vars(
self.playbook.VARS_CACHE[host], new_vars)
self.playbook.callbacks.on_import_for_host(host, filename4)
elif host is None:
# running a non-host specific pass and we can update the global vars instead
self.vars = utils.combine_vars(self.vars, new_vars)
process_files(filename, filename2, filename3, filename4, host=host)
# finally, update the VARS_CACHE for the host, if it is set
if host is not None: