surok/docs/Templates.md
2017-01-12 13:11:01 +03:00

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# Templates
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**Table of Contents**
- [Templates](#templates)
- [my dictionary in templates](#my-dictionary-in-templates)
- [Real template example](#real-template-example)
- [Checks in template](#checks-in-template)
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Surok using Jinja2 for templates. [Jinja2 documentation](http://jinja.pocoo.org/docs/dev/)
## 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 $remote_addr;
{% for server in my['services']['matrix']['http'] %}
server {{server['name']}}:{{server['port']}} max_fails=3;
{% endfor %}
}
upstream riot-http {
hash $remote_addr;
{% for server in my['services']['riot'] %}
server {{server['name']}}:{{server['port']}} max_fails=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 %}
```