Templates

Surok using Jinja2 for templates. Jinja2 documentation

my dictionary in templates

{ "services": { "nginx": [ { "name": "nginx.testing-kl92-s0.marathon.mesos.", "port": "31200", "ip": ["10.10.10.1"] }, { "name": "nginx.testing-kl123-s1.marathon.mesos.", "port": "32230", "ip": ["10.10.10.2"] } ], "emailsender": [ { "name": "emailsender.testing-kl92-s0.marathon.mesos.", "port": "31201", "ip": ["10.10.10.1"] }, { "name": "emailsender.testing-kl123-s1.marathon.mesos.", "port": "32232", "ip": ["10.10.10.1"] } ], "service-with-defined-ports": { "web": [ { "name": "f.q.d.n", "port": 12341 } ], "rpc": [ { "name": "f.q.d.n", "port": 12342 } ] } }, "env": { "HOME": "/var/lib/nginx" } }

Real template example

nginx config ``` upstream matrix-http { hash $remoteaddr; {% for server in my['services']['matrix']['http'] %} server {{server['name']}}:{{server['port']}} maxfails=3; {% endfor %} }

upstream riot-http { hash $remoteaddr; {% for server in my['services']['riot'] %} server {{server['name']}}:{{server['port']}} maxfails=3; {% endfor %} }

server { listen 10.15.56.157:80; server_name matrix.example.com;

client_max_body_size 10m;

location / {
    proxy_pass http://riot-http;
    proxy_set_header  X-Real-IP        $remote_addr;
    proxy_set_header  Host             $http_host;
    proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
}

location /_matrix/ {
    proxy_pass http://matrix-http;
    proxy_set_header  X-Real-IP        $remote_addr;
    proxy_set_header  Host             $http_host;
    proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
}

} ```

Checks in template

my['env'] is a python os.environ class. Look bellow: {% if my['env'].get('DB_HOST') %} host = '{{my['env']['DB_HOST']}}' {% else %} host = 'localhost' {% endif %}