feat(textfile_collectors): added support for textfile collectors

docs/README.rst

@@ -123,3 +123,9 @@ This state will uninstall the prometheus linux alternatives for archives only.
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This state will uninstall the prometheus upstream package repository only.
+
+``prometheus.config.node_exporter.textfile_collectors``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+This state will manage the node exporter's textfile collectors
+according to Pillar ``prometheus:exporters:node_exporter:textfile_collectors``.

pillar.example

@@ -35,6 +35,7 @@ prometheus:
     node_exporter:
       args:
         web.listen-address: ":9110"
+        # collector.textfile.directory: /var/tmp/node_exporter
 
   tofs:
     # The files_switch key serves as a selector for alternative
@@ -164,3 +165,7 @@ prometheus:
     # 'Alternatives system' priority: zero disables (default)
     # yamllint disable-line rule:braces
     altpriority: {{ range(1, 9100000) | random }}
+
+  exporters:
+    node_exporter:
+      textfile_collectors: {}

prometheus/config/clean.sls

@@ -5,3 +5,4 @@ include:
   - .file.clean
   - .args.clean
   - .users.clean
+  - .node_exporter.textfile_collectors.clean

prometheus/config/init.sls

@@ -1,7 +1,14 @@
 # -*- coding: utf-8 -*-
 # vim: ft=sls
 
+{#- Get the `tplroot` from `tpldir` #}
+{%- set tplroot = tpldir.split('/')[0] %}
+{%- from tplroot ~ "/map.jinja" import prometheus with context %}
+
 include:
   - .users
   - .args
   - .file
+    {%- if 'node_exporter' in prometheus.wanted %}
+  - .node_exporter.textfile_collectors
+    {%- endif %}

prometheus/config/node_exporter/textfile_collectors/clean.sls

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# vim: ft=sls
+
+{#- Get the `tplroot` from `tpldir` #}
+{%- set tplroot = tpldir.split('/')[0] %}
+{%- from tplroot ~ "/map.jinja" import prometheus with context %}
+
+prometheus-node_exporter-textfile_collectors-dir:
+  file.absent:
+    - name: {{ prometheus.dir.textfile_collectors }}
+
+prometheus-node_exporter-textfile-dir:
+  file.absent:
+    - name: {{ prometheus.service.node_exporter.args.get('collector.textfile.directory') }}
+
+{%- for collector, config in prometheus.get('exporters', {}).get('node_exporter', {}).get('textfile_collectors', {}).items() %}
+include:
+  - .{{ collector }}.clean
+{%- endfor %}
+

prometheus/config/node_exporter/textfile_collectors/init.sls

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+# vim: ft=sls
+
+{#- Get the `tplroot` from `tpldir` #}
+{%- set tplroot = tpldir.split('/')[0] %}
+{%- from tplroot ~ "/map.jinja" import prometheus with context %}
+
+prometheus-node_exporter-textfile_collectors-dir:
+  file.directory:
+    - name: {{ prometheus.dir.textfile_collectors }}
+    - mode: 755
+    - user: node_exporter
+    - group: node_exporter
+    - makedirs: True
+
+prometheus-node_exporter-textfile-dir:
+  file.directory:
+    - name: {{ prometheus.service.node_exporter.args.get('collector.textfile.directory') }}
+    - mode: 755
+    - user: node_exporter
+    - group: node_exporter
+    - makedirs: True
+
+{%- set states = [] %}
+{%- for collector, config in prometheus.get('exporters', {}).get('node_exporter', {}).get('textfile_collectors', {}).items() %}
+{%-     if config.get('enable', False) %}
+{%-         if config.get('remove', False) %}
+{%-             set state = ".{}.clean".format(collector) %}
+{%-         else %}
+{%-             set state = ".{}".format(collector) %}
+{%-         endif %}
+{%-         do states.append(state) %}
+{%-     endif %}
+{%- endfor %}
+
+
+{%- if states|length > 0 %}
+prometheus-node_exporter-textfile-dependencies:
+  pkg.installed:
+    - pkgs: {{ prometheus.exporters.node_exporter.textfile_collectors_dependencies }}
+    - require_in:
+{%-     for state in states %}
+      - sls: prometheus.config.node_exporter.textfile_collectors{{ state }}
+{%-     endfor %}
+
+include:
+{%-     for state in states %}
+  - {{ state }}
+{%      endfor %}
+{%- endif %}

prometheus/defaults.yaml

@@ -21,16 +21,21 @@ prometheus:
     var: /var/lib/prometheus
     args: /etc/default
     service: /usr/lib/systemd/system
+    textfile_collectors: /opt/prometheus/textfile_collectors
 
   service:
     prometheus:
       args:
         web.listen-address: 0.0.0.0:9090
     alertmanager: {}
+    node_exporter:
+      args:
+        collector.textfile.directory: /var/tmp/node_exporter
 
   config:
     prometheus: {}
     alertmanager: {}
+    node_exporter: {}
 
   pkg:
     prometheus:
@@ -113,3 +118,8 @@ prometheus:
 
   linux:
     altpriority: 0   ## 'Alternatives system' priority: zero disables (default)
+
+  exporters:
+    node_exporter:
+      textfile_collectors_dependencies: []
+      textfile_collectors: {}

prometheus/osfamilymap.yaml

@@ -18,6 +18,10 @@ Debian:
   service:
     node_exporter:
       name: prometheus-node-exporter
+  exporters:
+    node_exporter:
+      textfile_collectors_dependencies:
+        - cron
 
 RedHat:
   pkg: