From 2553ebb2aa3a03d2859f0fdf725b465a43dce95a Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sat, 26 Aug 2023 04:51:11 +0200
Subject: prometheus/exporter/snmp: switch to new config format (0.23.0+)

---
 .../exporter/register/templates/snmp/probe.yml.j2  |  3 ++
 .../prometheus/exporter/snmp/defaults/main.yml     |  3 +-
 .../prometheus/exporter/snmp/tasks/main.yml        | 39 ++++++++++++++++++++--
 .../exporter/snmp/templates/config.yml.j2          |  9 ++++-
 4 files changed, 49 insertions(+), 5 deletions(-)

(limited to 'roles/monitoring/prometheus')

diff --git a/roles/monitoring/prometheus/exporter/register/templates/snmp/probe.yml.j2 b/roles/monitoring/prometheus/exporter/register/templates/snmp/probe.yml.j2
index 3ecf129a..a50a32ff 100644
--- a/roles/monitoring/prometheus/exporter/register/templates/snmp/probe.yml.j2
+++ b/roles/monitoring/prometheus/exporter/register/templates/snmp/probe.yml.j2
@@ -3,6 +3,9 @@
     instance: '{{ target.instance }}'
     __param_target: '{{ target.config.target }}'
     __param_module: '{{ target.config.module }}'
+{% if 'auth' in target.config %}
+    __param_auth: '{{ target.config.auth }}'
+{% endif %}
 {% for name, value in prometheus_target_labels.items() %}
     {{ name }}: '{{ value }}'
 {% endfor %}
diff --git a/roles/monitoring/prometheus/exporter/snmp/defaults/main.yml b/roles/monitoring/prometheus/exporter/snmp/defaults/main.yml
index a8c67a23..45cff8aa 100644
--- a/roles/monitoring/prometheus/exporter/snmp/defaults/main.yml
+++ b/roles/monitoring/prometheus/exporter/snmp/defaults/main.yml
@@ -5,4 +5,5 @@
 # prometheus_exporter_snmp_config:
 
 ## this extends the default config
-# prometheus_exporter_snmp_config_extra:
+# prometheus_exporter_snmp_auths_extra:
+# prometheus_exporter_snmp_modules_extra:
diff --git a/roles/monitoring/prometheus/exporter/snmp/tasks/main.yml b/roles/monitoring/prometheus/exporter/snmp/tasks/main.yml
index 8fc93f0b..66b6f6b7 100644
--- a/roles/monitoring/prometheus/exporter/snmp/tasks/main.yml
+++ b/roles/monitoring/prometheus/exporter/snmp/tasks/main.yml
@@ -28,14 +28,47 @@
     dest: /etc/prometheus/exporter/snmp/config.yml
   notify: reload prometheus-snmp-exporter
 
-- name: extend the default configuration
+- name: add extra auths to default configuration
   when:
   - prometheus_exporter_snmp_config is not defined
-  - prometheus_exporter_snmp_config_extra is defined
+  - prometheus_exporter_snmp_auths_extra is defined
   blockinfile:
     path: /etc/prometheus/exporter/snmp/config.yml
+    insertbefore: '^modules:'
+    marker: '# {mark} ANSIBLE MANAGED BLOCK auths-extra'
     block: |
-      {{ prometheus_exporter_snmp_config_extra | to_nice_yaml(indent=2) }}
+      {{ '  ' }}{{ prometheus_exporter_snmp_auths_extra | to_nice_yaml(indent=2) | indent(2) }}
+  notify: reload prometheus-snmp-exporter
+
+- name: remove extra auths from default configuration
+  when:
+  - prometheus_exporter_snmp_config is not defined
+  - prometheus_exporter_snmp_auths_extra is not defined
+  blockinfile:
+    path: /etc/prometheus/exporter/snmp/config.yml
+    marker: '# {mark} ANSIBLE MANAGED BLOCK auths-extra'
+    state: absent
+  notify: reload prometheus-snmp-exporter
+
+- name: add extra modules to default configuration
+  when:
+  - prometheus_exporter_snmp_config is not defined
+  - prometheus_exporter_snmp_modules_extra is defined
+  blockinfile:
+    path: /etc/prometheus/exporter/snmp/config.yml
+    marker: '# {mark} ANSIBLE MANAGED BLOCK modules-extra'
+    block: |
+      {{ '  ' }}{{ prometheus_exporter_snmp_modules_extra | to_nice_yaml(indent=2) | indent(2) }}
+  notify: reload prometheus-snmp-exporter
+
+- name: remove extra modules from default configuration
+  when:
+  - prometheus_exporter_snmp_config is not defined
+  - prometheus_exporter_snmp_modules_extra is not defined
+  blockinfile:
+    path: /etc/prometheus/exporter/snmp/config.yml
+    marker: '# {mark} ANSIBLE MANAGED BLOCK modules-extra'
+    state: absent
   notify: reload prometheus-snmp-exporter
 
 - name: generate systemd service unit
diff --git a/roles/monitoring/prometheus/exporter/snmp/templates/config.yml.j2 b/roles/monitoring/prometheus/exporter/snmp/templates/config.yml.j2
index c75b8469..0f84b705 100644
--- a/roles/monitoring/prometheus/exporter/snmp/templates/config.yml.j2
+++ b/roles/monitoring/prometheus/exporter/snmp/templates/config.yml.j2
@@ -1,3 +1,10 @@
 # {{ ansible_managed }}
 
-{{ prometheus_exporter_snmp_config | combine(prometheus_exporter_snmp_config_extra | default({})) | to_nice_yaml(indent=2) }}
+{% set config_extra = dict() %}
+{% if prometheus_exporter_snmp_auths_extra is defined %}
+{%   config_extra.update{'auths': prometheus_exporter_snmp_auths_extra } %}
+{% endif %}
+{% if prometheus_exporter_snmp_modules_extra is defined %}
+{%   config_extra.update{'modules': prometheus_exporter_snmp_modules_extra } %}
+{% endif %}
+{{ prometheus_exporter_snmp_config | combine(config_extra) | to_nice_yaml(indent=2) }}
-- 
cgit v1.2.3