Support parameters to enable TLS prometheus scrape endpoints

Depends-on: https://review.opendev.org/945437
Change-Id: Ie329defefcf4bd5f2068af342832bb5d8f9b944e

manifests/agent/polling.pp

@@ -105,6 +105,20 @@
 #   metrics will be exposed.
 #   Defaults to $facts['os_service_default'].
 #
+# [*prometheus_tls_enable*]
+#   (Optional) Whether it will expose tls metrics or not.
+#   Defaults to $facts['os_service_default'].
+#
+# [*prometheus_tls_certfile*]
+#   (Optional) The certificate file to allow this ceilometer to expose tls
+#   scrape endpoints.
+#   Defaults to $facts['os_service_default'].
+#
+# [*prometheus_tls_keyfile*]
+#   (Optional) The private key to allow this ceilometer to expose tls scrape
+#   endpoints.
+#   Defaults to $facts['os_service_default'].
+#
 # [*pollsters_definitions_dirs*]
 #   (Optional) List of directories with YAML files used to create pollsters.
 #   Defaults to $facts['os_service_default'].
@@ -138,6 +152,9 @@ class ceilometer::agent::polling (
   $enable_notifications            = $facts['os_service_default'],
   $enable_prometheus_exporter      = $facts['os_service_default'],
   $prometheus_listen_addresses     = $facts['os_service_default'],
+  $prometheus_tls_enable           = $facts['os_service_default'],
+  $prometheus_tls_certfile         = $facts['os_service_default'],
+  $prometheus_tls_keyfile          = $facts['os_service_default'],
   $pollsters_definitions_dirs      = $facts['os_service_default'],
   # DEPRECATED PARAMETERS
   $tenant_name_discovery           = undef,
@@ -265,6 +282,9 @@ Use the identity_name_discovery parameter instead.")
     'polling/enable_notifications':        value => $enable_notifications;
     'polling/enable_prometheus_exporter':  value => $enable_prometheus_exporter;
     'polling/prometheus_listen_addresses': value => join(any2array($prometheus_listen_addresses), ',');
+    'polling/prometheus_tls_enable':       value => $prometheus_tls_enable;
+    'polling/prometheus_tls_certfile':     value => $prometheus_tls_certfile;
+    'polling/prometheus_tls_keyfile':      value => $prometheus_tls_keyfile;
   }
 
   if $manage_service {

releasenotes/notes/prometheus-tls-dde2d2c352dbb220.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    The following parameters have been added to
+    the ``ceilometer::agent::polling`` class.
+
+    - ``prometheus_tls_enable``
+    - ``prometheus_tls_certfile``
+    - ``prometheus_tls_keyfile``

spec/classes/ceilometer_agent_polling_spec.rb

@@ -77,6 +77,9 @@ describe 'ceilometer::agent::polling' do
       it { should contain_ceilometer_config('polling/enable_notifications').with_value('<SERVICE DEFAULT>') }
       it { should contain_ceilometer_config('polling/enable_prometheus_exporter').with_value('<SERVICE DEFAULT>') }
       it { should contain_ceilometer_config('polling/prometheus_listen_addresses').with_value('<SERVICE DEFAULT>') }
+      it { should contain_ceilometer_config('polling/prometheus_tls_enable').with_value('<SERVICE DEFAULT>') }
+      it { should contain_ceilometer_config('polling/prometheus_tls_certfile').with_value('<SERVICE DEFAULT>') }
+      it { should contain_ceilometer_config('polling/prometheus_tls_keyfile').with_value('<SERVICE DEFAULT>') }
       it { should contain_ceilometer_config('polling/pollsters_definitions_dirs').with_value('<SERVICE DEFAULT>') }
       it { should contain_ceilometer_config('polling/cfg_file').with_value('<SERVICE DEFAULT>') }
     end
@@ -110,11 +113,14 @@ describe 'ceilometer::agent::polling' do
     context 'when common parameters are set' do
       before do
         params.merge!(
-          :identity_name_discovery       => true,
+          :identity_name_discovery     => true,
           :ignore_disabled_projects    => false,
           :enable_notifications        => true,
           :enable_prometheus_exporter  => false,
           :prometheus_listen_addresses => ['127.0.0.1:9101'],
+          :prometheus_tls_enable       => false,
+          :prometheus_tls_certfile     => 'certfile',
+          :prometheus_tls_keyfile      => 'keyfile',
           :pollsters_definitions_dirs  => ['/etc/ceilometer/pollsters.d', '/etc/ceilometer/mypollsters.d']
         )
       end
@@ -125,6 +131,9 @@ describe 'ceilometer::agent::polling' do
         should contain_ceilometer_config('polling/enable_notifications').with_value(true)
         should contain_ceilometer_config('polling/enable_prometheus_exporter').with_value(false)
         should contain_ceilometer_config('polling/prometheus_listen_addresses').with_value('127.0.0.1:9101')
+        should contain_ceilometer_config('polling/prometheus_tls_enable').with_value(false)
+        should contain_ceilometer_config('polling/prometheus_tls_certfile').with_value('certfile')
+        should contain_ceilometer_config('polling/prometheus_tls_keyfile').with_value('keyfile')
         should contain_ceilometer_config('polling/pollsters_definitions_dirs').with_value(
           '/etc/ceilometer/pollsters.d,/etc/ceilometer/mypollsters.d')
       }