def get_vars(self, play=None, host=None, task=None, include_hostvars=True, include_delegate_to=True, use_cache=True): ''' Returns the variables, with optional "context" given via the parameters for the play, host, and task (which could possibly result in different sets of variables being returned due to the additional context). The order of precedence is: - play->roles->get_default_vars (if there is a play context) - group_vars_files[host] (if there is a host context) - host_vars_files[host] (if there is a host context) - host->get_vars (if there is a host context) - fact_cache[host] (if there is a host context) - play vars (if there is a play context) - play vars_files (if there's no host context, ignore file names that cannot be templated) - task->get_vars (if there is a task context) - vars_cache[host] (if there is a host context) - extra vars ''' display.debug("in VariableManager get_vars()") all_vars = dict() magic_variables = self._get_magic_variables( play=play, host=host, task=task, include_hostvars=include_hostvars, include_delegate_to=include_delegate_to, ) if play: # first we compile any vars specified in defaults/main.yml # for all roles within the specified play for role in play.get_roles(): all_vars = combine_vars(all_vars, role.get_default_vars()) # if we have a task in this context, and that task has a role, make # sure it sees its defaults above any other roles, as we previously # (v1) made sure each task had a copy of its roles default vars if task and task._role is not None and (play or task.action == 'include_role'): all_vars = combine_vars(all_vars, task._role.get_default_vars(dep_chain=task.get_dep_chain())) if host: # INIT WORK (use unsafe as we are going to copy/merge vars, no need to x2 copy) # basedir, THE 'all' group and the rest of groups for a host, used below basedir = self._loader.get_basedir() all_group = self._inventory.groups.get('all') host_groups = sort_groups([g for g in host.get_groups() if g.name not in ['all']]) def _get_plugin_vars(plugin, path, entities): data = {} try: data = plugin.get_vars(self._loader, path, entities) except AttributeError: try: for entity in entities: if isinstance(entity, Host): data.update(plugin.get_host_vars(entity.name)) else: data.update(plugin.get_group_vars(entity.name)) except AttributeError: if hasattr(plugin, 'run'): raise AnsibleError("Cannot use v1 type vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) else: raise AnsibleError("Invalid vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) return data # internal fuctions that actually do the work def _plugins_inventory(entities): ''' merges all entities by inventory source ''' data = {} for inventory_dir in self._inventory._sources: if ',' in inventory_dir: # skip host lists continue elif not os.path.isdir(inventory_dir): # always pass 'inventory directory' inventory_dir = os.path.dirname(inventory_dir) for plugin in vars_loader.all(): data = combine_vars(data, _get_plugin_vars(plugin, inventory_dir, entities)) return data def _plugins_play(entities): ''' merges all entities adjacent to play ''' data = {} for plugin in vars_loader.all(): data = combine_vars(data, _get_plugin_vars(plugin, basedir, entities)) return data # configurable functions that are sortable via config def all_inventory(): return all_group.get_vars() def all_plugins_inventory(): return _plugins_inventory([all_group]) def all_plugins_play(): return _plugins_play([all_group]) def groups_inventory(): ''' gets group vars from inventory ''' return get_group_vars(host_groups) def groups_plugins_inventory(): ''' gets plugin sources from inventory for groups ''' return _plugins_inventory(host_groups) def groups_plugins_play(): ''' gets plugin sources from play for groups ''' return _plugins_play(host_groups) def plugins_by_groups(): ''' merges all plugin sources by group, This should be used instead, NOT in combination with the other groups_plugins* functions ''' data = {} for group in host_groups: data[group] = combine_vars(data[group], _plugins_inventory(group)) data[group] = combine_vars(data[group], _plugins_play(group)) return data # Merge as per precedence config for entry in C.VARIABLE_PRECEDENCE: # only allow to call the functions we want exposed if entry.startswith('_') or '.' in entry: continue display.debug('Calling %s to load vars for %s' % (entry, host.name)) all_vars = combine_vars(all_vars, locals()[entry]()) # host vars, from inventory, inventory adjacent and play adjacent via plugins all_vars = combine_vars(all_vars, host.get_vars()) all_vars = combine_vars(all_vars, _plugins_inventory([host])) all_vars = combine_vars(all_vars, _plugins_play([host])) # finally, the facts caches for this host, if it exists try: host_facts = wrap_var(self._fact_cache.get(host.name, {})) if not C.ONLY_NAMESPACE_FACTS: # allow facts to polute main namespace all_vars = combine_vars(all_vars, host_facts) # always return namespaced facts all_vars = combine_vars(all_vars, {'ansible_facts': host_facts}) except KeyError: pass if play: all_vars = combine_vars(all_vars, play.get_vars()) for vars_file_item in play.get_vars_files(): # create a set of temporary vars here, which incorporate the extra # and magic vars so we can properly template the vars_files entries temp_vars = combine_vars(all_vars, self._extra_vars) temp_vars = combine_vars(temp_vars, magic_variables) templar = Templar(loader=self._loader, variables=temp_vars) # we assume each item in the list is itself a list, as we # support "conditional includes" for vars_files, which mimics # the with_first_found mechanism. vars_file_list = vars_file_item if not isinstance(vars_file_list, list): vars_file_list = [vars_file_list] # now we iterate through the (potential) files, and break out # as soon as we read one from the list. If none are found, we # raise an error, which is silently ignored at this point. try: for vars_file in vars_file_list: vars_file = templar.template(vars_file) try: data = preprocess_vars(self._loader.load_from_file(vars_file, unsafe=True)) if data is not None: for item in data: all_vars = combine_vars(all_vars, item) break except AnsibleFileNotFound: # we continue on loader failures continue except AnsibleParserError: raise else: # if include_delegate_to is set to False, we ignore the missing # vars file here because we're working on a delegated host if include_delegate_to: raise AnsibleFileNotFound("vars file %s was not found" % vars_file_item) except (UndefinedError, AnsibleUndefinedVariable): if host is not None and self._fact_cache.get(host.name, dict()).get('module_setup') and task is not None: raise AnsibleUndefinedVariable("an undefined variable was found when attempting to template the vars_files item '%s'" % vars_file_item, obj=vars_file_item) else: # we do not have a full context here, and the missing variable could be because of that # so just show a warning and continue display.vvv("skipping vars_file '%s' due to an undefined variable" % vars_file_item) continue display.vvv("Read vars_file '%s'" % vars_file_item) # By default, we now merge in all vars from all roles in the play, # unless the user has disabled this via a config option if not C.DEFAULT_PRIVATE_ROLE_VARS: for role in play.get_roles(): all_vars = combine_vars(all_vars, role.get_vars(include_params=False)) # next, we merge in the vars from the role, which will specifically # follow the role dependency chain, and then we merge in the tasks # vars (which will look at parent blocks/task includes) if task: if task._role: all_vars = combine_vars(all_vars, task._role.get_vars(task.get_dep_chain(), include_params=False)) all_vars = combine_vars(all_vars, task.get_vars()) # next, we merge in the vars cache (include vars) and nonpersistent # facts cache (set_fact/register), in that order if host: all_vars = combine_vars(all_vars, self._vars_cache.get(host.get_name(), dict())) all_vars = combine_vars(all_vars, self._nonpersistent_fact_cache.get(host.name, dict())) # next, we merge in role params and task include params if task: if task._role: all_vars = combine_vars(all_vars, task._role.get_role_params(task.get_dep_chain())) # special case for include tasks, where the include params # may be specified in the vars field for the task, which should # have higher precedence than the vars/np facts above all_vars = combine_vars(all_vars, task.get_include_params()) # extra vars all_vars = combine_vars(all_vars, self._extra_vars) # magic variables all_vars = combine_vars(all_vars, magic_variables) # special case for the 'environment' magic variable, as someone # may have set it as a variable and we don't want to stomp on it if task: all_vars['environment'] = task.environment # if we have a task and we're delegating to another host, figure out the # variables for that host now so we don't have to rely on hostvars later if task and task.delegate_to is not None and include_delegate_to: all_vars['ansible_delegated_vars'] = self._get_delegated_vars(play, task, all_vars) # 'vars' magic var if task or play: # has to be copy, otherwise recursive ref all_vars['vars'] = all_vars.copy() display.debug("done with get_vars()") return all_vars
def get_vars(self, play=None, host=None, task=None, include_hostvars=True, include_delegate_to=True, use_cache=True, _hosts=None, _hosts_all=None, stage='task'): ''' Returns the variables, with optional "context" given via the parameters for the play, host, and task (which could possibly result in different sets of variables being returned due to the additional context). The order of precedence is: - play->roles->get_default_vars (if there is a play context) - group_vars_files[host] (if there is a host context) - host_vars_files[host] (if there is a host context) - host->get_vars (if there is a host context) - fact_cache[host] (if there is a host context) - play vars (if there is a play context) - play vars_files (if there's no host context, ignore file names that cannot be templated) - task->get_vars (if there is a task context) - vars_cache[host] (if there is a host context) - extra vars ``_hosts`` and ``_hosts_all`` should be considered private args, with only internal trusted callers relying on the functionality they provide. These arguments may be removed at a later date without a deprecation period and without warning. ''' display.debug("in VariableManager get_vars()") all_vars = dict() magic_variables = self._get_magic_variables( play=play, host=host, task=task, include_hostvars=include_hostvars, include_delegate_to=include_delegate_to, _hosts=_hosts, _hosts_all=_hosts_all, ) _vars_sources = {} def _combine_and_track(data, new_data, source): ''' Wrapper function to update var sources dict and call combine_vars() See notes in the VarsWithSources docstring for caveats and limitations of the source tracking ''' if C.DEFAULT_DEBUG: # Populate var sources dict for key in new_data: _vars_sources[key] = source return combine_vars(data, new_data) # default for all cases basedirs = [] if self.safe_basedir: # avoid adhoc/console loading cwd basedirs = [self._loader.get_basedir()] if play: # first we compile any vars specified in defaults/main.yml # for all roles within the specified play for role in play.get_roles(): all_vars = _combine_and_track(all_vars, role.get_default_vars(), "role '%s' defaults" % role.name) if task: # set basedirs if C.PLAYBOOK_VARS_ROOT == 'all': # should be default basedirs = task.get_search_path() elif C.PLAYBOOK_VARS_ROOT in ( 'bottom', 'playbook_dir'): # only option in 2.4.0 basedirs = [task.get_search_path()[0]] elif C.PLAYBOOK_VARS_ROOT != 'top': # preserves default basedirs, only option pre 2.3 raise AnsibleError('Unknown playbook vars logic: %s' % C.PLAYBOOK_VARS_ROOT) # if we have a task in this context, and that task has a role, make # sure it sees its defaults above any other roles, as we previously # (v1) made sure each task had a copy of its roles default vars if task._role is not None and (play or task.action in C._ACTION_INCLUDE_ROLE): all_vars = _combine_and_track( all_vars, task._role.get_default_vars( dep_chain=task.get_dep_chain()), "role '%s' defaults" % task._role.name) if host: # THE 'all' group and the rest of groups for a host, used below all_group = self._inventory.groups.get('all') host_groups = sort_groups( [g for g in host.get_groups() if g.name not in ['all']]) def _get_plugin_vars(plugin, path, entities): data = {} try: data = plugin.get_vars(self._loader, path, entities) except AttributeError: try: for entity in entities: if isinstance(entity, Host): data |= plugin.get_host_vars(entity.name) else: data |= plugin.get_group_vars(entity.name) except AttributeError: if hasattr(plugin, 'run'): raise AnsibleError( "Cannot use v1 type vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) else: raise AnsibleError( "Invalid vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) return data # internal functions that actually do the work def _plugins_inventory(entities): ''' merges all entities by inventory source ''' return get_vars_from_inventory_sources( self._loader, self._inventory._sources, entities, stage) def _plugins_play(entities): ''' merges all entities adjacent to play ''' data = {} for path in basedirs: data = _combine_and_track( data, get_vars_from_path(self._loader, path, entities, stage), "path '%s'" % path) return data # configurable functions that are sortable via config, remember to add to _ALLOWED if expanding this list def all_inventory(): return all_group.get_vars() def all_plugins_inventory(): return _plugins_inventory([all_group]) def all_plugins_play(): return _plugins_play([all_group]) def groups_inventory(): ''' gets group vars from inventory ''' return get_group_vars(host_groups) def groups_plugins_inventory(): ''' gets plugin sources from inventory for groups ''' return _plugins_inventory(host_groups) def groups_plugins_play(): ''' gets plugin sources from play for groups ''' return _plugins_play(host_groups) def plugins_by_groups(): ''' merges all plugin sources by group, This should be used instead, NOT in combination with the other groups_plugins* functions ''' data = {} for group in host_groups: data[group] = _combine_and_track( data[group], _plugins_inventory(group), "inventory group_vars for '%s'" % group) data[group] = _combine_and_track( data[group], _plugins_play(group), "playbook group_vars for '%s'" % group) return data # Merge groups as per precedence config # only allow to call the functions we want exposed for entry in C.VARIABLE_PRECEDENCE: if entry in self._ALLOWED: display.debug('Calling %s to load vars for %s' % (entry, host.name)) all_vars = _combine_and_track( all_vars, locals()[entry](), "group vars, precedence entry '%s'" % entry) else: display.warning( 'Ignoring unknown variable precedence entry: %s' % (entry)) # host vars, from inventory, inventory adjacent and play adjacent via plugins all_vars = _combine_and_track(all_vars, host.get_vars(), "host vars for '%s'" % host) all_vars = _combine_and_track( all_vars, _plugins_inventory([host]), "inventory host_vars for '%s'" % host) all_vars = _combine_and_track(all_vars, _plugins_play([host]), "playbook host_vars for '%s'" % host) # finally, the facts caches for this host, if it exists # TODO: cleaning of facts should eventually become part of taskresults instead of vars try: facts = wrap_var(self._fact_cache.get(host.name, {})) all_vars |= namespace_facts(facts) # push facts to main namespace if C.INJECT_FACTS_AS_VARS: all_vars = _combine_and_track(all_vars, wrap_var(clean_facts(facts)), "facts") else: # always 'promote' ansible_local all_vars = _combine_and_track( all_vars, wrap_var( {'ansible_local': facts.get('ansible_local', {})}), "facts") except KeyError: pass if play: all_vars = _combine_and_track(all_vars, play.get_vars(), "play vars") vars_files = play.get_vars_files() try: for vars_file_item in vars_files: # create a set of temporary vars here, which incorporate the extra # and magic vars so we can properly template the vars_files entries # NOTE: this makes them depend on host vars/facts so things like # ansible_facts['os_distribution'] can be used, ala include_vars. # Consider DEPRECATING this in the future, since we have include_vars ... temp_vars = combine_vars(all_vars, self._extra_vars) temp_vars = combine_vars(temp_vars, magic_variables) templar = Templar(loader=self._loader, variables=temp_vars) # we assume each item in the list is itself a list, as we # support "conditional includes" for vars_files, which mimics # the with_first_found mechanism. vars_file_list = vars_file_item if not isinstance(vars_file_list, list): vars_file_list = [vars_file_list] # now we iterate through the (potential) files, and break out # as soon as we read one from the list. If none are found, we # raise an error, which is silently ignored at this point. try: for vars_file in vars_file_list: vars_file = templar.template(vars_file) if not (isinstance(vars_file, Sequence)): raise AnsibleError( "Invalid vars_files entry found: %r\n" "vars_files entries should be either a string type or " "a list of string types after template expansion" % vars_file) try: play_search_stack = play.get_search_path() found_file = real_file = self._loader.path_dwim_relative_stack( play_search_stack, 'vars', vars_file) data = preprocess_vars( self._loader.load_from_file(found_file, unsafe=True, cache=False)) if data is not None: for item in data: all_vars = _combine_and_track( all_vars, item, "play vars_files from '%s'" % vars_file) break except AnsibleFileNotFound: # we continue on loader failures continue except AnsibleParserError: raise else: # if include_delegate_to is set to False or we don't have a host, we ignore the missing # vars file here because we're working on a delegated host or require host vars, see NOTE above if include_delegate_to and host: raise AnsibleFileNotFound( "vars file %s was not found" % vars_file_item) except (UndefinedError, AnsibleUndefinedVariable): if host is not None and self._fact_cache.get( host.name, dict()).get( 'module_setup') and task is not None: raise AnsibleUndefinedVariable( "an undefined variable was found when attempting to template the vars_files item '%s'" % vars_file_item, obj=vars_file_item) else: # we do not have a full context here, and the missing variable could be because of that # so just show a warning and continue display.vvv( "skipping vars_file '%s' due to an undefined variable" % vars_file_item) continue display.vvv("Read vars_file '%s'" % vars_file_item) except TypeError: raise AnsibleParserError( "Error while reading vars files - please supply a list of file names. " "Got '%s' of type %s" % (vars_files, type(vars_files))) # By default, we now merge in all vars from all roles in the play, # unless the user has disabled this via a config option if not C.DEFAULT_PRIVATE_ROLE_VARS: for role in play.get_roles(): all_vars = _combine_and_track( all_vars, role.get_vars(include_params=False), "role '%s' vars" % role.name) # next, we merge in the vars from the role, which will specifically # follow the role dependency chain, and then we merge in the tasks # vars (which will look at parent blocks/task includes) if task: if task._role: all_vars = _combine_and_track( all_vars, task._role.get_vars(task.get_dep_chain(), include_params=False), "role '%s' vars" % task._role.name) all_vars = _combine_and_track(all_vars, task.get_vars(), "task vars") # next, we merge in the vars cache (include vars) and nonpersistent # facts cache (set_fact/register), in that order if host: # include_vars non-persistent cache all_vars = _combine_and_track( all_vars, self._vars_cache.get(host.get_name(), dict()), "include_vars") # fact non-persistent cache all_vars = _combine_and_track( all_vars, self._nonpersistent_fact_cache.get(host.name, dict()), "set_fact") # next, we merge in role params and task include params if task: if task._role: all_vars = _combine_and_track( all_vars, task._role.get_role_params(task.get_dep_chain()), "role '%s' params" % task._role.name) # special case for include tasks, where the include params # may be specified in the vars field for the task, which should # have higher precedence than the vars/np facts above all_vars = _combine_and_track(all_vars, task.get_include_params(), "include params") # extra vars all_vars = _combine_and_track(all_vars, self._extra_vars, "extra vars") # magic variables all_vars = _combine_and_track(all_vars, magic_variables, "magic vars") # special case for the 'environment' magic variable, as someone # may have set it as a variable and we don't want to stomp on it if task: all_vars['environment'] = task.environment # 'vars' magic var if task or play: # has to be copy, otherwise recursive ref all_vars['vars'] = all_vars.copy() # if we have a host and task and we're delegating to another host, # figure out the variables for that host now so we don't have to rely on host vars later if task and host and task.delegate_to is not None and include_delegate_to: all_vars['ansible_delegated_vars'], all_vars[ '_ansible_loop_cache'] = self._get_delegated_vars( play, task, all_vars) display.debug("done with get_vars()") if C.DEFAULT_DEBUG: # Use VarsWithSources wrapper class to display var sources return VarsWithSources.new_vars_with_sources( all_vars, _vars_sources) else: return all_vars
def get_vars(self, play=None, host=None, task=None, include_hostvars=True, include_delegate_to=True, use_cache=True): ''' Returns the variables, with optional "context" given via the parameters for the play, host, and task (which could possibly result in different sets of variables being returned due to the additional context). The order of precedence is: - play->roles->get_default_vars (if there is a play context) - group_vars_files[host] (if there is a host context) - host_vars_files[host] (if there is a host context) - host->get_vars (if there is a host context) - fact_cache[host] (if there is a host context) - play vars (if there is a play context) - play vars_files (if there's no host context, ignore file names that cannot be templated) - task->get_vars (if there is a task context) - vars_cache[host] (if there is a host context) - extra vars ''' display.debug("in VariableManager get_vars()") all_vars = dict() magic_variables = self._get_magic_variables( play=play, host=host, task=task, include_hostvars=include_hostvars, include_delegate_to=include_delegate_to, ) if play: # first we compile any vars specified in defaults/main.yml # for all roles within the specified play for role in play.get_roles(): all_vars = combine_vars(all_vars, role.get_default_vars()) # if we have a task in this context, and that task has a role, make # sure it sees its defaults above any other roles, as we previously # (v1) made sure each task had a copy of its roles default vars if task and task._role is not None and (play or task.action == 'include_role'): all_vars = combine_vars(all_vars, task._role.get_default_vars(dep_chain=task.get_dep_chain())) if host: # INIT WORK (use unsafe as we are going to copy/merge vars, no need to x2 copy) # basedir, THE 'all' group and the rest of groups for a host, used below basedir = self._loader.get_basedir() all_group = self._inventory.groups.get('all') host_groups = sort_groups([g for g in host.get_groups() if g.name not in ['all']]) def _get_plugin_vars(plugin, path, entities): data = {} try: data = plugin.get_vars(self._loader, path, entities) except AttributeError: try: for entity in entities: if isinstance(entity, Host): data.update(plugin.get_host_vars(entity.name)) else: data.update(plugin.get_group_vars(entity.name)) except AttributeError: if hasattr(plugin, 'run'): raise AnsibleError("Cannot use v1 type vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) else: raise AnsibleError("Invalid vars plugin %s from %s" % (plugin._load_name, plugin._original_path)) return data # internal fuctions that actually do the work def _plugins_inventory(entities): ''' merges all entities by inventory source ''' data = {} for inventory_dir in self._inventory._sources: if ',' in inventory_dir: # skip host lists continue elif not os.path.isdir(inventory_dir): # always pass 'inventory directory' inventory_dir = os.path.dirname(inventory_dir) for plugin in vars_loader.all(): data = combine_vars(data, _get_plugin_vars(plugin, inventory_dir, entities)) return data def _plugins_play(entities): ''' merges all entities adjacent to play ''' data = {} for plugin in vars_loader.all(): data = combine_vars(data, _get_plugin_vars(plugin, basedir, entities)) return data # configurable functions that are sortable via config, rememer to add to _ALLOWED if expanding this list def all_inventory(): return all_group.get_vars() def all_plugins_inventory(): return _plugins_inventory([all_group]) def all_plugins_play(): return _plugins_play([all_group]) def groups_inventory(): ''' gets group vars from inventory ''' return get_group_vars(host_groups) def groups_plugins_inventory(): ''' gets plugin sources from inventory for groups ''' return _plugins_inventory(host_groups) def groups_plugins_play(): ''' gets plugin sources from play for groups ''' return _plugins_play(host_groups) def plugins_by_groups(): ''' merges all plugin sources by group, This should be used instead, NOT in combination with the other groups_plugins* functions ''' data = {} for group in host_groups: data[group] = combine_vars(data[group], _plugins_inventory(group)) data[group] = combine_vars(data[group], _plugins_play(group)) return data # Merge as per precedence config # only allow to call the functions we want exposed for entry in C.VARIABLE_PRECEDENCE: if entry in self._ALLOWED: display.debug('Calling %s to load vars for %s' % (entry, host.name)) all_vars = combine_vars(all_vars, locals()[entry]()) else: display.warning('Ignoring unknown variable precedence entry: %s' % (entry)) # host vars, from inventory, inventory adjacent and play adjacent via plugins all_vars = combine_vars(all_vars, host.get_vars()) all_vars = combine_vars(all_vars, _plugins_inventory([host])) all_vars = combine_vars(all_vars, _plugins_play([host])) # finally, the facts caches for this host, if it exists try: host_facts = wrap_var(self._fact_cache.get(host.name, {})) # push facts to main namespace all_vars = combine_vars(all_vars, host_facts) except KeyError: pass if play: all_vars = combine_vars(all_vars, play.get_vars()) for vars_file_item in play.get_vars_files(): # create a set of temporary vars here, which incorporate the extra # and magic vars so we can properly template the vars_files entries temp_vars = combine_vars(all_vars, self._extra_vars) temp_vars = combine_vars(temp_vars, magic_variables) templar = Templar(loader=self._loader, variables=temp_vars) # we assume each item in the list is itself a list, as we # support "conditional includes" for vars_files, which mimics # the with_first_found mechanism. vars_file_list = vars_file_item if not isinstance(vars_file_list, list): vars_file_list = [vars_file_list] # now we iterate through the (potential) files, and break out # as soon as we read one from the list. If none are found, we # raise an error, which is silently ignored at this point. try: for vars_file in vars_file_list: vars_file = templar.template(vars_file) try: data = preprocess_vars(self._loader.load_from_file(vars_file, unsafe=True)) if data is not None: for item in data: all_vars = combine_vars(all_vars, item) break except AnsibleFileNotFound: # we continue on loader failures continue except AnsibleParserError: raise else: # if include_delegate_to is set to False, we ignore the missing # vars file here because we're working on a delegated host if include_delegate_to: raise AnsibleFileNotFound("vars file %s was not found" % vars_file_item) except (UndefinedError, AnsibleUndefinedVariable): if host is not None and self._fact_cache.get(host.name, dict()).get('module_setup') and task is not None: raise AnsibleUndefinedVariable("an undefined variable was found when attempting to template the vars_files item '%s'" % vars_file_item, obj=vars_file_item) else: # we do not have a full context here, and the missing variable could be because of that # so just show a warning and continue display.vvv("skipping vars_file '%s' due to an undefined variable" % vars_file_item) continue display.vvv("Read vars_file '%s'" % vars_file_item) # By default, we now merge in all vars from all roles in the play, # unless the user has disabled this via a config option if not C.DEFAULT_PRIVATE_ROLE_VARS: for role in play.get_roles(): all_vars = combine_vars(all_vars, role.get_vars(include_params=False)) # next, we merge in the vars from the role, which will specifically # follow the role dependency chain, and then we merge in the tasks # vars (which will look at parent blocks/task includes) if task: if task._role: all_vars = combine_vars(all_vars, task._role.get_vars(task.get_dep_chain(), include_params=False)) all_vars = combine_vars(all_vars, task.get_vars()) # next, we merge in the vars cache (include vars) and nonpersistent # facts cache (set_fact/register), in that order if host: all_vars = combine_vars(all_vars, self._vars_cache.get(host.get_name(), dict())) all_vars = combine_vars(all_vars, self._nonpersistent_fact_cache.get(host.name, dict())) # next, we merge in role params and task include params if task: if task._role: all_vars = combine_vars(all_vars, task._role.get_role_params(task.get_dep_chain())) # special case for include tasks, where the include params # may be specified in the vars field for the task, which should # have higher precedence than the vars/np facts above all_vars = combine_vars(all_vars, task.get_include_params()) # extra vars all_vars = combine_vars(all_vars, self._extra_vars) # magic variables all_vars = combine_vars(all_vars, magic_variables) # special case for the 'environment' magic variable, as someone # may have set it as a variable and we don't want to stomp on it if task: all_vars['environment'] = task.environment # if we have a task and we're delegating to another host, figure out the # variables for that host now so we don't have to rely on hostvars later if task and task.delegate_to is not None and include_delegate_to: all_vars['ansible_delegated_vars'] = self._get_delegated_vars(play, task, all_vars) # 'vars' magic var if task or play: # has to be copy, otherwise recursive ref all_vars['vars'] = all_vars.copy() display.debug("done with get_vars()") return all_vars