Decouple service from init system

manifests/config.pp

@@ -15,7 +15,7 @@
   $purge = true,
 ) {
 
-  if $::consul::init_style {
+  if $::consul::init_style != 'unmanaged' {
 
     case $::consul::init_style {
       'upstart': {

manifests/init.pp

@@ -1,132 +1,133 @@
 # == Class: consul
-#  
+#
 # Installs, configures and manages consul
-#  
+#
 # === Parameters
-#  
+#
 # [*acls*]
 #   Hash of consul_acl resources to create.
-#  
+#
 # [*arch*]
 #   Architecture of consul binary to download.
-#  
+#
 # [*archive_path*]
 #   Path used when installing consul via the url.
-#  
+#
 # [*bin_dir*]
 #   Directory to create the symlink to the consul binary in.
-#  
+#
 # [*checks*]
 #   Hash of consul::check resources to create.
-#  
+#
 # [*config_defaults*]
 #   Configuration defaults hash. Gets merged with config_hash.
-#  
+#
 # [*config_dir*]
 #   Directory to place consul configuration files in.
-#  
+#
 # [*config_hash*]
 #   Use this to populate the JSON config file for consul.
-#  
+#
 # [*config_mode*]
 #   Use this to set the JSON config file mode for consul.
-#  
+#
 # [*download_extension*]
 #   The extension of the archive file containing the consul binary to download.
-#  
+#
 # [*download_url*]
 #   Fully qualified url to the location of the archive file containing the consul binary.
-#  
+#
 # [*download_url_base*]
 #   Base url to the location of the archive file containing the consul binary.
-#  
+#
 # [*extra_groups*]
 #   Extra groups to add the consul system user to.
-#  
+#
 # [*extra_options*]
 #   Extra arguments to be passed to the consul agent
-#  
+#
 # [*group*]
 #   Name of the group that should own the consul configuration files.
-#  
+#
 # [*init_style*]
-#   What style of init system your system uses.
-#  
+#   What style of init system your system uses. Set to 'unmanaged' to disable
+#   managing init system files for the consul service entirely.
+#
 # [*install_method*]
 #   Valid strings: `package` - install via system package
 #                  `url`     - download and extract from a url. Defaults to `url`.
 #                  `none`    - disable install.
-#  
+#
 # [*join_wan*]
 #   Whether to join the wan on service start.
-#  
+#
 # [*manage_group*]
 #   Whether to create/manage the group that should own the consul configuration files.
-#  
+#
 # [*manage_service*]
 #   Whether to manage the consul service.
-#  
+#
 # [*manage_user*]
 #   Whether to create/manage the user that should own consul's configuration files.
-#  
+#
 # [*os*]
 #   OS component in the name of the archive file containing the consul binary.
-#  
+#
 # [*package_ensure*]
 #   Only valid when the install_method == package. Defaults to `latest`.
-#  
+#
 # [*package_name*]
 #   Only valid when the install_method == package. Defaults to `consul`.
-#  
+#
 # [*pretty_config*]
 #   Generates a human readable JSON config file. Defaults to `false`.
-#  
+#
 # [*pretty_config_indent*]
 #   Toggle indentation for human readable JSON file. Defaults to `4`.
-#  
+#
 # [*purge_config_dir*]
 #   Purge config files no longer generated by Puppet
-#  
+#
 # [*restart_on_change*]
 #   Determines whether to restart consul agent on $config_hash changes.
 #   This will not affect reloads when service, check or watch configs change.
 #   Defaults to `true`.
-#  
+#
 # [*service_enable*]
 #   Whether to enable the consul service to start at boot.
-#  
+#
 # [*service_ensure*]
 #   Whether the consul service should be running or not.
-#  
+#
 # [*services*]
 #   Hash of consul::service resources to create.
-#  
+#
 # [*ui_download_extension*]
 #   The extension of the archive file containing the consul ui to download.
-#  
+#
 # [*ui_download_url*]
 #   Fully qualified url to the location of the archive file containing the consul ui.
-#  
+#
 # [*ui_download_url_base*]
 #   Base url to the location of the archive file containing the consul ui.
-#  
+#
 # [*ui_package_ensure*]
 #   Only valid when the install_method == package. Defaults to `latest`.
-#  
+#
 # [*ui_package_name*]
 #   Only valid when the install_method == package. Defaults to `consul_ui`.
-#  
+#
 # [*user*]
 #   Name of the user that should own the consul configuration files.
-#  
+#
 # [*version*]
 #   Specify version of consul binary to download.
-#  
+#
 # [*watches*]
 #   Hash of consul::watch resources to create.
-#  
+#
 # === Examples
-#  
+#
 #  @example
 #    class { '::consul':
 #      config_hash => {
@@ -136,7 +137,7 @@
 #        'retry-join'   => ['172.16.0.1'],
 #      },
 #    }
-#  
+#
 class consul (
   $acls                  = $::consul::params::acls,
   $arch                  = $::consul::params::arch,

manifests/params.pp

@@ -93,9 +93,6 @@
   } elsif $::operatingsystem == 'Amazon' {
     $init_style = 'init'
   } else {
-    $init_style = undef
-  }
-  if $init_style == undef {
-    fail('Unsupported OS')
+    fail('Cannot determine init_style, unsupported OS')
   }
 }

manifests/run_service.pp

@@ -5,17 +5,22 @@
 #
 class consul::run_service {
 
-  $init_selector = $::consul::init_style ? {
+  $service_name = $::consul::init_style ? {
     'launchd' => 'io.consul.daemon',
     default   => 'consul',
   }
 
-  if $::consul::manage_service == true and $::consul::init_style {
+  $service_provider = $::consul::init_style ? {
+    'unmanaged' => undef,
+    default     => $::consul::init_style,
+  }
+
+  if $::consul::manage_service == true {
     service { 'consul':
       ensure   => $::consul::service_ensure,
-      name     => $init_selector,
+      name     => $service_name,
       enable   => $::consul::service_enable,
-      provider => $::consul::init_style,
+      provider => $service_provider,
     }
   }
 

spec/classes/init_spec.rb

@@ -694,9 +694,9 @@
     it { should contain_file('/lib/systemd/system/consul.service').with_content(/consul agent/) }
   end
 
-  context "When asked not to manage the init_style" do
-    let(:params) {{ :init_style => false }}
-    it { should contain_class('consul').with_init_style(false) }
+  context "When asked not to manage the init system" do
+    let(:params) {{ :init_style => 'unmanaged' }}
+    it { should contain_class('consul').with_init_style('unmanaged') }
     it { should_not contain_file("/etc/init.d/consul") }
     it { should_not contain_file("/lib/systemd/system/consul.service") }
   end