Add custom globals to the environment, and not per template

[sivel]

SUMMARY

Add custom globals to the environment, and not per template

This produces an environment, that is more similar to what is used when calling templar.template. lookups are disable on the template if necessary.

This makes an environmentfilter filter more powerful, as it now has access to our custom globals.

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

lib/ansible/template/__init__.py

ADDITIONAL INFORMATION

[sivel]

An example of a filter plugin that could make filters for each lookup:

from jinja2.filters import environmentfilter

from ansible.plugins.loader import lookup_loader


def lookup_wrapper(lookup):
    @environmentfilter
    def inner(environment, *args, **kwargs):
        return environment.globals['q'](lookup, *args, **kwargs)
    return inner


class FilterModule(object):
    def filters(self):
        return {k._load_name: lookup_wrapper(k._load_name) for k in lookup_loader.all()}