e2j2 0.1.2

e2j2 is a commandline utility to render text/configuration files from jinja2 templates

e2j2

e2j2 (environment to jinja2 variables) is a commandline tool which will render jinja2 templates to textfiles. all environment variables can be used in the jinja2 templates, within the environment variables you can use special tags which give you the option to insert json, json file paths, base64 hashes, consul kv keys.

e2j2 is intended to be used within docker containers, you can simply add the j2 extention to a configuration file and then run e2j2 before you’re starting the actual executable.

lets assume we want to render the following server block in nginx, if we place the server configuration in a nginx include directory for example /etc/nginx/conf.d

server {
  server_name {{ NGINX.server_name }};
  listen 80;
  listen [::]:80;
  error_page 500 502 503 504 /50x.html;

  location / {
    index {{ NGINX.index_page }};
    root {{ NGINX.web_root }};
  }

  location ~ \.php$ {
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    fastcgi_pass unix:{{ NGINX.fpm_socket }};
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    include {{ NGINX.fcgi_params }};
    root {{ NGINX.web_root }};
    try_files $uri =404;
  }
}

if you then set the NGINX environment variable within you’re container, running e2j2 will render the jinja2 template and place it in the same folder.

~> set | grep NGINX
NGINX='json:{"server_name": "www.myweb.com", "index_page": "index.php", "web_root": "/usr/local/www/myweb", "fcgi_params": "/usr/local/etc/nginx/myweb-fcgi-params", "fpm_socket": "/var/run/php-fpm/myweb.socket"}'
~> e2j2

In: .
    rendering: nginx_vhost_config.conf.j2=>done => writing: nginx_vhost_config.conf=>done

~> cat nginx_vhost_config.conf
server {
  server_name www.myweb.com;
  listen 80;
  listen [::]:80;
  error_page 500 502 503 504 /50x.html;

  location / {
    index index.php;
    root /usr/local/www/myweb;
  }

  location ~ \.php$ {
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    fastcgi_pass unix:/var/run/php-fpm/myweb.socket;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    include /usr/local/etc/nginx/myweb-fcgi-params;
    root /usr/local/www/roundcube;
    try_files $uri =404;
  }
}

you can also point to a json file by using the jsonfile: tag or place you’re configuration in a consul key/value store.

Changelog

0.1.2 (2017-05-17)

Fixed

• additional fix for install issue on python2 (added MANIFEST.in)

0.1.1 (2017-05-17)

Fixed

• add README.rst and CHANGELOG.rst as package_data this fixes install issue with python 2.x

Removed

• remove dependency colorama

Changed

• move methods to separate helper files

0.1.0 (2017-05-16)

Added

• add short options for extention (-e) searchlist (-s) and noop (-N)

• add (MIT) license

Changed

• e2j2 is now packaged as pip package

• split script and module, script will be installed in /usr/bin or /usr/local/bin

0.0.2 (2017-05-16)

Added

• Add recurse flag

Changed

• Searchlist is no longer a required option e2j2 will use the current directory as default

• Recursion is no longer on by default

• Improve error handling, e2j2 will now report failures and render *.err files which will make debugging errors much easier

0.0.1 (2017-05-01)

Initial release