Add install_info file (#628)

Author: mx-psi

manifests/init.pp

@@ -384,6 +384,8 @@
     $local_integrations = $integrations
   }
 
+  $_puppetversion = lookup({ 'name' => '::puppetversion', 'default_value' => 'unknown'})
+
   include datadog_agent::params
   case upcase($log_level) {
     'CRITICAL': { $_loglevel = 'CRITICAL' }
@@ -558,6 +560,15 @@
         order   => '08',
       }
     }
+
+    file {'/etc/dd-agent/install_info':
+      owner   => $dd_user,
+      group   => $dd_group,
+      mode    => '0640',
+      content => template('datadog_agent/install_info.erb'),
+      require => File['/etc/dd-agent'],
+    }
+
   } else { #Agent 6/7
 
     # notify of broken params on agent6/7
@@ -714,6 +725,14 @@
         require => File['C:/ProgramData/Datadog'],
       }
 
+      file { 'C:/ProgramData/Datadog/install_info':
+        owner   => $dd_user,
+        group   => $dd_group,
+        mode    => '0660',
+        content => template('datadog_agent/install_info.erb'),
+        require => File['C:/ProgramData/Datadog'],
+      }
+
     } else {
 
       file { '/etc/datadog-agent/datadog.yaml':
@@ -725,6 +744,14 @@
         require => File['/etc/datadog-agent'],
       }
 
+      file { '/etc/datadog-agent/install_info':
+        owner   => $dd_user,
+        group   => $dd_group,
+        mode    => '0640',
+        content => template('datadog_agent/install_info.erb'),
+        require => File['/etc/datadog-agent'],
+      }
+
     }
 
   }

manifests/params.pp

@@ -23,6 +23,7 @@
   $apt_backup_keyserver           = 'hkp://pool.sks-keyservers.net:80'
   $apt_keyserver                  = 'hkp://keyserver.ubuntu.com:80'
   $sysprobe_service_name          = 'datadog-agent-sysprobe'
+  $module_metadata                = load_module_metadata($module_name)
 
   case $::operatingsystem {
     'Ubuntu','Debian' : {

spec/classes/datadog_agent_spec.rb

@@ -1591,18 +1591,35 @@
         end
 
         config_dir = WINDOWS_OS.include?(operatingsystem) ? 'C:/ProgramData/Datadog' : '/etc/datadog-agent'
-        config_yaml_file = config_dir + '/datadog.yaml'
+        config_yaml_file = File.join(config_dir, 'datadog.yaml')
+        install_info_file = File.join(config_dir, 'install_info')
         log_file = WINDOWS_OS.include?(operatingsystem) ? 'C:/ProgramData/Datadog/logs/agent.log' : '\/var\/log\/datadog\/agent.log'
 
         it { is_expected.to contain_file(config_dir) }
         it { is_expected.to contain_file(config_yaml_file) }
+        it { is_expected.to contain_file(install_info_file) }
         it { is_expected.to contain_file(config_dir + '/conf.d').with_ensure('directory') }
 
         # Agent 5 files
         it { is_expected.not_to contain_file('/etc/dd-agent') }
         it { is_expected.not_to contain_concat('/etc/dd-agent/datadog.conf') }
         it { is_expected.not_to contain_file('/etc/dd-agent/conf.d').with_ensure('directory') }
 
+        describe 'install_info check' do
+          let!(:install_info) do
+            contents = catalogue.resource('file', install_info_file).send(:parameters)[:content]
+            YAML.safe_load(contents)
+          end
+
+          it 'adds an install_info' do
+            expect(install_info['install_method']).to match(
+              'tool' => 'puppet',
+              'tool_version' => %r{^puppet-(\d+\.\d+\.\d+|unknown)$},
+              'installer_version' => %r{^datadog_module-\d+\.\d+\.\d+$},
+            )
+          end
+        end
+
         describe 'agent6 parameter check' do
           context 'with defaults' do
             context 'for basic beta settings' do

templates/install_info.erb

@@ -0,0 +1,5 @@
+---
+install_method:
+  tool: puppet
+  tool_version: puppet-<%= @_puppetversion %>
+  installer_version: datadog_module-<%= @module_metadata['version'] %>