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Adds configurable jinja2 extension loading

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Jinja extensions adds features to the jinja2 templating engine. This
patch allows module loading for the templating engine vian an
ansible.cfg configuration key (jinja_extensions).
The default behaviour doesn't change (no module loading).
Requested modules can be added coma separated in ansible.cfg

Adds whitespace handling in jinja_extension config

Added whitespace handling in jinja_extension configuration directive, so
things stay safe if user adds spaces around comas in the directives
list.

Adds config example for jinja_extensions

Added config example with multiple extentions for jinja_extensions
This commit is contained in:
Michel Blanc 2013-02-13 10:10:16 +01:00 committed by Michael DeHaan
parent 83ce1b2dc5
commit 1c22f2146e
3 changed files with 22 additions and 1 deletions
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7
examples/ansible.cfg
View file

@ -89,6 +89,13 @@ sudo_exe=sudo
#
# hash_behaviour=replace
# if you need to use jinja2 extensions, you can list them here
# use a coma to separate extensions, e.g. :
# jinja_extensions=jinja2.ext.do,jinja2.ext.i18n
# no extensions are loaded by default
#jinja_extensions=
# if set, always use this private key file for authentication, same as if passing
# --private-key to ansible or ansible-playbook

1
lib/ansible/constants.py
View file

@ -94,6 +94,7 @@ DEFAULT_KEEP_REMOTE_FILES = get_config(p, DEFAULTS, 'keep_remote_files', 'ANSIBL
DEFAULT_SUDO_EXE = get_config(p, DEFAULTS, 'sudo_exe', 'ANSIBLE_SUDO_EXE', 'sudo')
DEFAULT_SUDO_FLAGS = get_config(p, DEFAULTS, 'sudo_flags', 'ANSIBLE_SUDO_FLAGS', '-H')
DEFAULT_HASH_BEHAVIOUR = get_config(p, DEFAULTS, 'hash_behaviour', 'ANSIBLE_HASH_BEHAVIOUR', 'replace')
DEFAULT_JINA_EXTENSIONS = get_config(p, DEFAULTS, 'jinja_extensions', 'ANSIBLE_JINA_EXTENSIONS', None)
DEFAULT_ACTION_PLUGIN_PATH = shell_expand_path(get_config(p, DEFAULTS, 'action_plugins', 'ANSIBLE_ACTION_PLUGINS', '/usr/share/ansible_plugins/action_plugins'))
DEFAULT_CALLBACK_PLUGIN_PATH = shell_expand_path(get_config(p, DEFAULTS, 'callback_plugins', 'ANSIBLE_CALLBACK_PLUGINS', '/usr/share/ansible_plugins/callback_plugins'))

15
lib/ansible/utils/template.py
View file

@ -313,7 +313,20 @@ def template_from_file(basedir, path, vars):
from ansible import utils
realpath = utils.path_dwim(basedir, path)
loader=jinja2.FileSystemLoader([basedir,os.path.dirname(realpath)])
environment = jinja2.Environment(loader=loader, trim_blocks=True)
'''
if some extensions are set via jinja_extensions in ansible.cfg, we try
to load them with the jinja environment
'''
jinja_exts = []
if C.DEFAULT_JINA_EXTENSIONS:
'''
Let's make sure the configuration directive doesn't contain spaces
and split extensions in an array
'''
jinja_exts = C.DEFAULT_JINA_EXTENSIONS.replace(" ", "").split(',')
environment = jinja2.Environment(loader=loader, trim_blocks=True, extensions=jinja_exts)
for filter_plugin in utils.plugins.filter_loader.all():
filters = filter_plugin.filters()
if not isinstance(filters, dict):