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Template Designer for Automation

Try it now

https://td4a.now.sh

Overview

TD4A is a visual design aid for building and testing jinja2 templates. It will combine data in yaml format with a jinja2 template and render the output.

All jinja2 filters are supported along with the filter plugins from Ansible version 2.4.1.0.

Installation:

using docker:

docker pull cidrblock/td4a

The docker hub page can be found here:

https://hub.docker.com/r/cidrblock/td4a/

using the cli:

$ virtualenv venv
$ source venv/bin/activate
$ pip install td4a

The pip package can be found here:

https://pypi.python.org/pypi/td4a

Starting the TD4A server

Simple

using docker:

docker run -p 5000:5000 cidrblock/td4a

using the cli:

td4a-server

open your browser to:

http://127.0.0.1:5000

Modes

TD4A support two different modes of operation.

• Templating: Build and render jinja2 templates
• Schema: Build and validate a json schema for your data

Enabling a mode

using docker:

docker run  -p 5000:5000 \
            -it \
            cidrblock/td4a \
            td4a-server -m mode

using the cli:

td4a-server -m mode

where mode is either jinja2 (default) or schema

Additional configuration options

Loading custom filter plugins (jinja2 mode only)

using docker:

TD4A supports custom filter plugins within the container. Pass your custom filter_plugins directory as a volume and use the -f option to specify to custom filter plugin directory.

docker run  -p 5000:5000 \
            -it \
            -v `pwd`/my_filter_plugins:/filter_plugins            
            cidrblock/td4a \
            td4a-server -f /filter_plugins

using the cli:

TD4A can load custom filters from a directory specified from the command line:

td4a-server -f ./my_filter_plugins

Loading an ansible inventory (jinja2 and schema mode)

using docker:

Mount the inventory as /inventory in the container, and run TD4A with the -i option.

docker run  -p 5000:5000 \
            -it \
            -v '/Users/me/github/ansible_network_inventory:/inventory' \
            cidrblock/td4a \
            td4a-server -i /inventory -m mode -v 'my_vault_password'

If environment variables are needed for a dynamic inventory, they can be passed to the docker container.

docker run  -p 5000:5000 \
            -it \
            -v `pwd`/my_filter_plugins:/filter_plugins \
            -v '/Users/me/github/ansible_network_inventory:/inventory' \
            -e "COUCH_USERNAME=admin" \
            -e "COUCH_PASSWORD=password" \
            -e "COUCH_URL=http://192.168.1.5:5984/td4a" \
            -e "DYNAMIC_INVENTORY_USERNAME=api" \
            -e "DYNAMIC_INVENTORY_PASSWORD=password" \
            cidrblock/td4a \
            td4a-server -f /filter_plugins -m mode -i /inventory -v 'my_vault_password'

using the cli:

TD4A can load multiple ansible inventories, specifc each with -i on the command line:

td4a-server -i ./my_ansible_inventory -v 'my_vault_password'

Enabling storage and links using a couch database (jinja2 and schema mode)

TD4A has the ability to store data and templates in a CouchDB. This is disabled by default.

The CouchDB needs to previously created.

To enable link support, and add the link button to the UI, set the following environ variables:

using docker:

docker run  -p 5000:5000 \
            -v `pwd`/my_filter_plugins:/filter_plugins \
            -e "COUCH_USERNAME=admin" \
            -e "COUCH_PASSWORD=password" \
            -e "COUCH_URL=http://192.168.1.5:5984/td4a" \
            cidrblock/td4a \
            td4a-server -m mode

using the cli:

export COUCH_USERNAME=admin
export COUCH_PASSWORD=password
export COUCH_URL=http://localhost:5984/td4a
td4a-server -m mode

User Interface

The interface is browser based and has been tested using Chrome. If your browser did not automatically open when TD4A was started, you can visit http://127.0.0.1:5000 to see the interface.

The UI is broken into three sections:

1. DATA, this is where the data in yaml format is provided.
2. TEMPLATE, the jinja2 template to be rendered.
3. RESULT, after clicking the render button, the result pane will be populated with the rendered template.

Keyboard shortcuts

cmd+r: Render the template

cmd+s: Save the data in browser local storage

cmd+b: Begin new, clear the screen

Python version

To date, this has only been tested with python 2.7.

Development

NPM and related packages are required to build the UI.

npm install

The UI components can be installed for development purposes using bower.

bower install

The dependancies can be concatenated and minified using gulp.

gulp