syslog-ng-formula/syslog_ng/files/syslog-ng.conf

{%- set syslog_config = pillar.get('syslog_ng', {}) -%}

{%- macro rule_builder(rule) -%}
    {%- if rule is none -%}
    {%- elif rule is sameas true -%}
yes
    {%- elif rule is sameas false -%}
no
    {%- elif rule is number -%}
{{ rule }}
    {%- elif rule is mapping -%}
        {%- for k, v in rule.items() -%}
{{ k }}({{ rule_builder(v) }})
        {%- endfor -%}
    {%- elif rule is iterable and rule is not string -%}
        {%- for v in rule -%}
{{ rule_builder(v) }}
        {%- endfor -%}
    {%- else -%}
        {%- if rule[0] == '=' -%}
{{ rule[1:] }}
        {%- else -%}
"{{ rule }}"
        {%- endif -%}
    {%- endif -%}
{%- endmacro -%}

@version: {{ syslog_config.get('version', '3.3') }}

{%- for module in syslog_config.get('module', []) %}
@module {{ rule_builder(module) }}
{%- endfor %}

{%- for inc in syslog_config.get('include', []) %}
@include {{ rule_builder(inc) }}
{%- endfor %}

options {
{%- for rule in syslog_config.get('options', []) %}
        {{ rule_builder(rule) }};
{%- endfor %}
};

{%- for obj in ('source', 'destination', 'filter', 'parser', 'rewrite', 'template') %}
{%- for params in syslog_config.get(obj, []) %}
{% for name, rules in params.items() %}
{{ obj }} {{ name }} {
      {%- for rule in rules %}
        {{ rule_builder(rule) }};
      {%- endfor %}
};
{%- endfor %}
{%- endfor %}
{%- endfor %}

{% for loggers in syslog_config.get('log', []) -%}
log {
  {%- for rule in loggers %}
        {{ rule_builder(rule) }};
  {%- endfor %}
};
{%- endfor %}