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Template all variables before returning them to Jinja2

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This commit is contained in:
Daniel Hokka Zakrisson 2012-11-12 15:25:01 +01:00
parent d2dce1d63f
commit 25a8787e95
1 changed files with 17 additions and 1 deletions
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18
lib/ansible/utils/template.py
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@ -238,6 +238,18 @@ def template(basedir, text, vars, expand_lists=False):
text = varReplace(basedir, unicode(text), vars, expand_lists=expand_lists)
return text
class _jinja2_vars(object):
''' helper class to template all variable content before jinja2 sees it '''
def __init__(self, basedir, vars):
self.basedir = basedir
self.vars = vars
def __contains__(self, k):
return k in self.vars
def __getitem__(self, varname):
if varname not in self.vars:
raise KeyError("undefined variable: %s" % varname)
return template_ds(self.basedir, self.vars[varname], self.vars)
def template_from_file(basedir, path, vars):
''' run a file through the templating engine '''
@ -276,7 +288,11 @@ def template_from_file(basedir, path, vars):
vars['ansible_managed'] = time.strftime(managed_str,
time.localtime(os.path.getmtime(realpath)))
res = t.render(vars)
# This line performs deep Jinja2 magic that uses the _jinja2_vars object for vars
# Ideally, this could use some API where setting shared=True and the object won't get
# passed through dict(o), but I have not found that yet.
res = jinja2.utils.concat(t.root_render_func(t.new_context(_jinja2_vars(basedir, vars), shared=True)))
if data.endswith('\n') and not res.endswith('\n'):
res = res + '\n'
return template(basedir, res, vars)