Add Prometheus exporters

Change-Id: I71538bc6b39edaa6a0856c8bba9de11b88cec67a

metadata/service/exporters/jmx.yml

@@ -0,0 +1,13 @@
+applications:
+  - prometheus
+parameters:
+  _param:
+    prometheus_exporter_jmx_port: 9111
+  prometheus:
+    exporters:
+      jmx:
+        enabled: true
+        packages:
+          - jmx-exporter
+        bind:
+          port: ${_param:prometheus_exporter_jmx_port}

metadata/service/exporters/libvirt.yml

@@ -0,0 +1,14 @@
+applications:
+  - prometheus
+parameters:
+  _param:
+    prometheus_exporter_libvirt_port: 9177
+  prometheus:
+    exporters:
+      libvirt:
+        enabled: true
+        packages:
+          - libvirt-exporter
+        bind:
+          address: 0.0.0.0
+          port: ${_param:prometheus_exporter_libvirt_port}

prometheus/exporters.sls

@@ -0,0 +1,11 @@
+{% from "prometheus/map.jinja" import exporters with context %}
+
+{%- for exporter, parameters in exporters.iteritems() %}
+  {%- if parameters.get('enabled', False) %}
+    {%- if parameters.get('packages', False) %}
+{{ exporter }}_exporter_packages:
+  pkg.installed:
+    - names: {{ parameters.packages }}
+    {%- endif %}
+  {%- endif %}
+{%- endfor %}

prometheus/init.sls

@@ -1,5 +1,6 @@
 {%- if pillar.prometheus.server is defined or
-       pillar.prometheus.alertmanager is defined %}
+       pillar.prometheus.alertmanager is defined or
+       pillar.prometheus.exporters is defined %}
 include:
   {%- if pillar.prometheus.server is defined %}
   - prometheus.server
@@ -7,4 +8,7 @@ include:
   {%- if pillar.prometheus.alertmanager is defined %}
   - prometheus.alertmanager
   {%- endif %}
+  {%- if pillar.prometheus.exporters is defined %}
+  - prometheus.exporters
+  {%- endif %}
 {%- endif %}

prometheus/map.jinja

@@ -7,3 +7,8 @@
   'default': {
   },
 }, merge=salt['pillar.get']('prometheus:alertmanager')) %}
+
+{% set exporters = salt['grains.filter_by']({
+  'default': {
+  },
+}, merge=salt['pillar.get']('prometheus:exporters')) %}