add hugepages plugin

In collectd 5.7, the hugepages plugin have been added.

This change adds it in puppet-collectd.

README.md

@@ -130,6 +130,7 @@ documentation for each plugin for configurable attributes.
 * `genericjmx` (see [collectd::plugin::genericjmx](#class-collectdplugingenericjmx)
   below)
 * `hddtemp` (see [collectd::plugin::hddtemp](#class-collectdpluginhddtemp) below)
+* `hugepages` (see [collectd::plugin::hugepages](#class-collectdpluginhugepages) below)
 * `intel_pmu` (see [collectd::plugin::intel_pmu](#class-collectdpluginintel_pmu) below)
 * `interface` (see [collectd::plugin::interface](#class-collectdplugininterface)
   below)
@@ -869,6 +870,18 @@ class { 'collectd::plugin::hddtemp':
 }
 ```
 
+#### Class: `collectd::plugin::hugepages`
+
+```puppet
+class { 'collectd::plugin::hugepages':
+  report_per_node_hp => true,
+  report_root_hp     => true,
+  values_pages       => true,
+  values_bytes       => false,
+  values_percentage  => false
+}
+```
+
 #### Class: `collectd::plugin::intel_pmu`
 ```puppet
 class { 'collectd::plugin::intel_pmu':

manifests/plugin/hugepages.pp

@@ -0,0 +1,59 @@
+#== Class: collectd::plugin::hugepages
+#
+# Class to manage hugepages write plugin for collectd
+#
+# Documentation:
+#   https://collectd.org/documentation/manpages/collectd.conf.5.shtml#plugin_hugepages
+#
+# === Parameters
+#
+# [*ensure*]
+#  Ensure param for collectd::plugin type.
+#  Defaults to 'ensure'
+#
+# [*interval*]
+#  Interval setting for the plugin
+#  Defaults to undef
+#
+# [*report_per_node_hp*]
+#  If enabled, information will be collected from the hugepage counters in
+#  "/sys/devices/system/node/*/hugepages". This is used to check the per-node
+#  hugepage statistics on a NUMA system.
+#  Defaults to true
+#
+# [*report_root_hp*]
+#  If enabled, information will be collected from the hugepage counters in
+#  "/sys/kernel/mm/hugepages". This can be used on both NUMA and non-NUMA
+#  systems to check the overall hugepage statistics.
+#  Defaults to true
+#
+# [*values_pages*]
+#  Whether to report hugepages metrics in number of pages
+#  Defaults to true
+#
+# [*values_bytes*]
+#  Whether to report hugepages metrics in bytes
+#  Defaults to false
+#
+# [*values_percentage*]
+#  Whether to report hugepages metrics in percentage
+#  Defaults to false
+#
+class collectd::plugin::hugepages (
+  Enum['present', 'absent'] $ensure   = 'present',
+  Optional[Integer] $interval         = undef,
+  Boolean $report_per_node_hp         = true,
+  Boolean $report_root_hp             = true,
+  Boolean $values_pages               = true,
+  Boolean $values_bytes               = false,
+  Boolean $values_percentage          = false,
+) {
+
+  include collectd
+
+  collectd::plugin { 'hugepages':
+    ensure   => $ensure,
+    interval => $interval,
+    content  => epp('collectd/plugin/hugepages.conf.epp'),
+  }
+}

spec/classes/collectd_plugin_hugepages_spec.rb

@@ -0,0 +1,76 @@
+require 'spec_helper'
+
+describe 'collectd::plugin::hugepages', type: :class do
+  on_supported_os(baseline_os_hash).each do |os, facts|
+    context "on #{os} " do
+      let :facts do
+        facts
+      end
+
+      options = os_specific_options(facts)
+      context 'default' do
+        it 'defaults' do
+          content = <<EOS
+# Generated by Puppet
+<LoadPlugin hugepages>
+  Globals false
+</LoadPlugin>
+
+<Plugin "hugepages">
+  ReportPerNodeHP true
+  ReportRootHP true
+  ValuesPages true
+  ValuesBytes false
+  ValuesPercentage false
+</Plugin>
+
+EOS
+
+          is_expected.to compile.with_all_deps
+          is_expected.to contain_file('hugepages.load').with(
+            content: content,
+            path: "#{options[:plugin_conf_dir]}/10-hugepages.conf"
+          )
+        end
+      end
+
+      options = os_specific_options(facts)
+      context 'all set' do
+        let :params do
+          {
+            'report_per_node_hp' => false,
+            'report_root_hp'     => false,
+            'values_pages'       => false,
+            'values_bytes'       => true,
+            'values_percentage'  => true
+          }
+        end
+
+        it 'overrides defaults' do
+          content = <<EOS
+# Generated by Puppet
+<LoadPlugin hugepages>
+  Globals false
+</LoadPlugin>
+
+<Plugin "hugepages">
+  ReportPerNodeHP false
+  ReportRootHP false
+  ValuesPages false
+  ValuesBytes true
+  ValuesPercentage true
+</Plugin>
+
+EOS
+
+          is_expected.to compile.with_all_deps
+          is_expected.to contain_class('collectd')
+          is_expected.to contain_file('hugepages.load').with(
+            content: content,
+            path: "#{options[:plugin_conf_dir]}/10-hugepages.conf"
+          )
+        end
+      end
+    end
+  end
+end

templates/plugin/hugepages.conf.epp

@@ -0,0 +1,7 @@
+<Plugin "hugepages">
+  ReportPerNodeHP <%= $collectd::plugin::hugepages::report_per_node_hp %>
+  ReportRootHP <%= $collectd::plugin::hugepages::report_root_hp %>
+  ValuesPages <%= $collectd::plugin::hugepages::values_pages %>
+  ValuesBytes <%= $collectd::plugin::hugepages::values_bytes %>
+  ValuesPercentage <%= $collectd::plugin::hugepages::values_percentage %>
+</Plugin>