Add iperf3 experter

Change-Id: I9e4a0166d789bcc553bfb59f621846339fa8ded4

manifests/iperf3_exporter.pp

@@ -0,0 +1,113 @@
+# @summary This module manages prometheus node iperf3_exporter
+# @param arch
+#  Architecture (amd64 or i386)
+# @param bin_dir
+#  Directory where binaries are located
+# @param download_extension
+#  Extension for the release binary archive
+# @param download_url
+#  Complete URL corresponding to the where the release binary archive can be downloaded
+# @param download_url_base
+#  Base URL for the binary archive
+# @param options
+#  Options added to the startup command
+# @param extra_groups
+#  Extra groups to add the binary user to
+# @param group
+#  Group under which the binary is running
+# @param init_style
+#  Service startup scripts style (e.g. rc, upstart or systemd)
+# @param install_method
+#  Installation method: url or package (only url is supported currently)
+# @param manage_group
+#  Whether to create a group for or rely on external code for that
+# @param manage_service
+#  Should puppet manage the service? (default true)
+# @param manage_user
+#  Whether to create user or rely on external code for that
+# @param os
+#  Operating system (linux is the only one supported)
+# @param package_ensure
+#  If package, then use this for package ensure default 'latest'
+# @param package_name
+#  The binary package name - not available yet
+# @param purge_config_dir
+#  Purge config files no longer generated by Puppet
+# @param restart_on_change
+#  Should puppet restart the service on configuration change? (default true)
+# @param service_enable
+#  Whether to enable the service from puppet (default true)
+# @param service_ensure
+#  State ensured for the service (default 'running')
+# @param service_name
+#  Name of the iperf3 exporter service (default 'iperf3_exporter')
+# @param user
+#  User which runs the service
+# @param version
+#  The binary release version
+class prometheus::iperf3_exporter (
+  String[1] $download_extension           = 'tar.gz',
+  Prometheus::Uri $download_url_base      = 'https://github.com/edgard/iperf3_exporter/releases',
+  Array[String[1]] $extra_groups          = [],
+  String[1] $group                        = 'iperf3-exporter',
+  String[1] $package_ensure               = 'latest',
+  String[1] $package_name                 = 'iperf3_exporter',
+  String[1] $service_name                 = 'iperf3_exporter',
+  String[1] $user                         = 'iperf3-exporter',
+  String[1] $version                      = '0.1.3',
+  String[1] $os                           = downcase($facts['kernel']),
+  String $options                         = '',
+  Prometheus::Initstyle $init_style       = $facts['service_provider'],
+  Prometheus::Install $install_method     = $prometheus::install_method,
+  Optional[Prometheus::Uri] $download_url = undef,
+  String[1] $arch                         = $prometheus::real_arch,
+  Stdlib::AbsolutePath $bin_dir           = $prometheus::bin_dir,
+  Boolean $export_scrape_job              = false,
+  Optional[Stdlib::Host] $scrape_host     = undef,
+  Stdlib::Port $scrape_port               = 9579,
+  String[1] $scrape_job_name              = 'iperf3',
+  Optional[Hash] $scrape_job_labels       = undef,
+  Boolean $service_enable                 = true,
+  Boolean $manage_service                 = true,
+  Stdlib::Ensure::Service $service_ensure = 'running',
+  Boolean $restart_on_change              = true,
+  Boolean $purge_config_dir               = true,
+  Boolean $manage_user                    = true,
+  Boolean $manage_group                   = true,
+) inherits prometheus {
+  $real_download_url = pick($download_url,"${download_url_base}/download/v${version}/${package_name}-${version}.${os}-${arch}.${download_extension}")
+
+  $notify_service = $restart_on_change ? {
+    true    => Service[$service_name],
+    default => undef,
+  }
+
+  prometheus::daemon { 'iperf3_exporter':
+    install_method     => $install_method,
+    version            => $version,
+    download_extension => $download_extension,
+    os                 => $os,
+    arch               => $arch,
+    real_download_url  => $real_download_url,
+    bin_dir            => $bin_dir,
+    notify_service     => $notify_service,
+    package_name       => $package_name,
+    package_ensure     => $package_ensure,
+    manage_user        => $manage_user,
+    user               => $user,
+    extra_groups       => $extra_groups,
+    group              => $group,
+    manage_group       => $manage_group,
+    purge              => $purge_config_dir,
+    options            => $options,
+    init_style         => $init_style,
+    service_ensure     => $service_ensure,
+    service_enable     => $service_enable,
+    manage_service     => $manage_service,
+    export_scrape_job  => $export_scrape_job,
+    scrape_host        => $scrape_host,
+    scrape_port        => $scrape_port,
+    scrape_job_name    => $scrape_job_name,
+    scrape_job_labels  => $scrape_job_labels,
+  }
+}

spec/acceptance/iperf3_exporter_spec.rb

@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+require 'spec_helper_acceptance'
+
+describe 'prometheus iperf3_exporter' do
+  it 'iperf3_exporter works idempotently with no errors' do
+    pp = 'include prometheus::iperf3_exporter'
+    # Run it twice and test for idempotency
+    apply_manifest(pp, catch_failures: true)
+    apply_manifest(pp, catch_changes: true)
+  end
+
+  describe service('iperf3_exporter') do
+    it { is_expected.to be_running }
+    it { is_expected.to be_enabled }
+  end
+
+  describe port(9579) do
+    it { is_expected.to be_listening.with('tcp6') }
+  end
+
+  # rubocop:disable RSpec/RepeatedExampleGroupBody,RSpec/RepeatedExampleGroupDescription
+  describe 'iperf3_exporter update from 0.1.2 to 0.1.3' do
+    it 'is idempotent' do
+      pp = "class{'prometheus::iperf3_exporter': version => '0.1.2'}"
+      # Run it twice and test for idempotency
+      apply_manifest(pp, catch_failures: true)
+      apply_manifest(pp, catch_changes: true)
+    end
+
+    describe service('iperf3_exporter') do
+      it { is_expected.to be_running }
+      it { is_expected.to be_enabled }
+    end
+
+    describe port(9579) do
+      it { is_expected.to be_listening.with('tcp6') }
+    end
+    it 'is idempotent' do
+      pp = "class{'prometheus::iperf3_exporter': version => '0.1.3'}"
+      # Run it twice and test for idempotency
+      apply_manifest(pp, catch_failures: true)
+      apply_manifest(pp, catch_changes: true)
+    end
+
+    describe service('iperf3_exporter') do
+      it { is_expected.to be_running }
+      it { is_expected.to be_enabled }
+    end
+
+    describe port(9579) do
+      it { is_expected.to be_listening.with('tcp6') }
+    end
+  end
+  # rubocop:enable RSpec/RepeatedExampleGroupBody,RSpec/RepeatedExampleGroupDescription
+end

spec/classes/iperf3_exporter_spec.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'prometheus::iperf3_exporter' do
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge(os_specific_facts(facts))
+      end
+
+      context 'without parameters' do
+        it { is_expected.to contain_prometheus__daemon('iperf3_exporter') }
+        it { is_expected.to compile.with_all_deps }
+        it { is_expected.to contain_group('iperf3-exporter') }
+        it { is_expected.to contain_service('iperf3_exporter') }
+        it { is_expected.to contain_user('iperf3-exporter') }
+        it { is_expected.to contain_class('prometheus') }
+      end
+
+      context 'with params' do
+        let :params do
+          {
+            install_method: 'url',
+            version: '0.1.3'
+          }
+        end
+
+        it { is_expected.to contain_archive('/tmp/iperf3_exporter-0.1.3.tar.gz') }
+        it { is_expected.to contain_file('/opt/iperf3_exporter-0.1.3.linux-amd64/iperf3_exporter') }
+      end
+    end
+  end
+end