add telegraf.d support

roles/telegraf/tasks/main.yaml

@@ -25,6 +25,18 @@
     mode: 0644
   notify: reload telegraf
 
+- name: configure telegraf.d files
+  template:
+    src: telegraf_d.conf.j2
+    dest: "/etc/telegraf/telegraf.d/{{ '%02d' | format(idx) }}-{{ item.name }}.conf"
+    owner: root
+    group: root
+    mode: 0644
+  notify: reload telegraf
+  loop: "{{ telegraf_config_d | default([]) }}"
+  loop_control:
+    index_var: idx
+
 - name: create systemd override directory
   file:
     path: /etc/systemd/system/telegraf.service.d

roles/telegraf/templates/telegraf_d.conf.j2

@@ -0,0 +1,40 @@
+# {{ ansible_managed }}
+
+{% macro toml_scalar(v, seq=False) %}
+{% if v is string %}
+  "{{ v | quote }}"{% if seq %},{% endif %}
+{% elif v is sameas True or v is sameas False %}
+  {{ v | bool | lower }}{% if seq %},{% endif %}
+{% elif v is sameas None %}
+  ""{% if seq %},{% endif %}
+{% elif v is number %}
+  {{ v }}{% if seq %},{% endif %}
+{% endif %}
+{% endmacro %}
+
+{% if item.config %}
+{% for name, config in item.config.items() | default({}) %}
+{% for c in config %}
+[[{{ name }}]]
+{% for k, v in c.items() | default({}) %}
+{% if v is string %}
+  {{ k }} = "{{ v | quote }}"
+{% elif v is sameas True or v is sameas False %}
+  {{ k }} = {{ v | bool | lower }}
+{% elif v is sameas None %}
+  {{ k }} = ""
+{% elif v is number %}
+  {{ k }} = {{ v }}
+{% elif v is sequence %}
+  {{ k }} = [
+{% for i in v | default([]) %}
+    {{ toml_scalar(i, seq=True) }}
+{% endfor %}
+  ]
+{% endif %}
+{% endfor %}
+{% else %}
+[[{{ name }}]]
+{% endfor %}
+{% endfor %}
+{% endif %}