A lightweight live parser for Jinja2 based on Flask and Jquery.
All you need is Python and preferably pip. Can parse JSON and YAML inputs.
$ git clone https://github.com/baburciu/jinja2-live-parser.git
$ pip install -r requirements.txt
$ python parser.py
Build it:
docker build -t mydocker/j2parser .
docker run -d -p 5000:5000 mydocker/j2parser
Or simply pull it from registry (without building):
docker run -d -p 5000:5000 sahilsk/j2parser
You are all set, go to http://<HOST_IP>:5000/ and have fun. The Jinja2 Ansible Filters offer the filters Ansible provides, that are not present in upstream Jinja2. 🌳
You can add any custom filter you'd like in filters.py. Just make sure the function's name starts with filter_.
root@vm1:~# git clone https://github.com/baburciu/jinja2-live-parser.git
Cloning into 'jinja2-live-parser'...
remote: Enumerating objects: 90, done.
remote: Total 90 (delta 0), reused 0 (delta 0), pack-reused 90
Unpacking objects: 100% (90/90), done.
root@vm1:~#
root@vm1:~# python3 -m venv envs/jinja
root@vm1:~# source envs/jinja/bin/activate
(jinja) root@vm1:~# cd jinja2-live-parser/
(jinja) root@vm1:~/jinja2-live-parser#
(jinja) root@vm1:~/jinja2-live-parser# pip install -r requirements.txt
:
Installing collected packages: MarkupSafe, Jinja2, Werkzeug, itsdangerous, Flask, PyYAML, ipython
Successfully installed Flask-0.10.1 Jinja2-2.7.1 MarkupSafe-0.18 PyYAML-3.11 Werkzeug-0.9.6 ipython-2.2.0 itsdangerous-0.24
(jinja) root@vm1:~/jinja2-live-parser# head config.py
# Builtin config values: http://flask.pocoo.org/docs/0.10/config/
import os
DEBUG = os.environ.get('DEBUG', False)
#HOST = os.environ.get('HOST', 'localhost')
HOST = "0.0.0.0" # <== make the Flask app answer to request from any IP, not only localhost sources
PORT = int(os.environ.get('PORT', 5000))
LOGGING_FORMAT = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
LOGGING_LOCATION = 'jinja2-live-parser.log'
(jinja) root@vm1:~/jinja2-live-parser#
(jinja) root@vm1:~/jinja2-live-parser# tail -5 parser.py
app.run(
host=config.HOST,
port=config.PORT,
debug=config.DEBUG,
)
(jinja) root@vm1:~/jinja2-live-parser#
(jinja) root@vm1:~/jinja2-live-parser# python parser.py
* Running on http://0.0.0.0:5000/
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET / HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /static/js/jquery-1.11.1.min.js HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /static/css/style.css HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /static/css/bootstrap.min.css HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /static/js/bootstrap.min.js HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /static/js/convert.js HTTP/1.1" 200 -
172.18.211.228 - - [17/Jan/2022 09:43:13] "GET /favicon.ico HTTP/1.1" 404 -
import yaml
from jinja2 import Environment, meta, exceptions
jinja2_env = Environment(extensions=['jinja2_ansible_filters.AnsibleCoreFiltersExtension'])
jinja2_env.add_extension('jinja2.ext.do')
values = yaml.load("""
<VALUES_HERE>
""")
jinja2_tpl = jinja2_env.from_string("""
<J2_TEMPLATE_HERE>
""")
rendered_jinja2_tpl = jinja2_tpl.render(values)
print("{}".format(rendered_jinja2_tpl))