Prefer Hiera data to params.pp

This limit the quantity of spaghetti code we add when adding support for
another platform.

No functional change.

Author: smortex

REFERENCE.md

@@ -15,7 +15,6 @@
 
 * `python::config`: Optionally installs the gunicorn service
 * `python::install`: Installs core python packages
-* `python::params`: The python Module default configuration settings.
 
 ### Defined types
 
@@ -81,8 +80,8 @@ The following parameters are available in the `python` class:
 * [`manage_python_package`](#-python--manage_python_package)
 * [`manage_venv_package`](#-python--manage_venv_package)
 * [`manage_pip_package`](#-python--manage_pip_package)
-* [`venv`](#-python--venv)
 * [`gunicorn_package_name`](#-python--gunicorn_package_name)
+* [`venv`](#-python--venv)
 * [`python_pips`](#-python--python_pips)
 * [`python_pyvenvs`](#-python--python_pyvenvs)
 * [`python_requirements`](#-python--python_requirements)
@@ -112,8 +111,6 @@ Allowed values:
     - 3/3.3/... means you are going to install the python3/python3.3/...
       package, if available on your osfamily.
 
-Default value: `$facts['os']['family'] ? { 'Archlinux' => 'system', default => '3'`
-
 ##### <a name="-python--pip"></a>`pip`
 
 Data type: `Python::Package::Ensure`
@@ -160,8 +157,6 @@ Data type: `Boolean`
 
 to determine if the epel class is used.
 
-Default value: `$python::params::use_epel`
-
 ##### <a name="-python--manage_scl"></a>`manage_scl`
 
 Data type: `Boolean`
@@ -198,31 +193,25 @@ Data type: `Boolean`
 
 manage the state for package venv
 
-Default value: `$python::params::manage_venv_package`
-
 ##### <a name="-python--manage_pip_package"></a>`manage_pip_package`
 
 Data type: `Boolean`
 
 manage the state for package pip
 
-Default value: `$python::params::manage_pip_package`
-
-##### <a name="-python--venv"></a>`venv`
-
-Data type: `Python::Package::Ensure`
+##### <a name="-python--gunicorn_package_name"></a>`gunicorn_package_name`
 
+Data type: `String[1]`
 
 
-Default value: `'absent'`
 
-##### <a name="-python--gunicorn_package_name"></a>`gunicorn_package_name`
+##### <a name="-python--venv"></a>`venv`
 
-Data type: `String[1]`
+Data type: `Python::Package::Ensure`
 
 
 
-Default value: `$python::params::gunicorn_package_name`
+Default value: `'absent'`
 
 ##### <a name="-python--python_pips"></a>`python_pips`
 
@@ -301,6 +290,7 @@ The following parameters are available in the `python::pip::bootstrap` class:
 * [`version`](#-python--pip--bootstrap--version)
 * [`manage_python`](#-python--pip--bootstrap--manage_python)
 * [`http_proxy`](#-python--pip--bootstrap--http_proxy)
+* [`pip_lookup_path`](#-python--pip--bootstrap--pip_lookup_path)
 * [`exec_provider`](#-python--pip--bootstrap--exec_provider)
 
 ##### <a name="-python--pip--bootstrap--version"></a>`version`
@@ -327,6 +317,12 @@ Proxy server to use for outbound connections.
 
 Default value: `undef`
 
+##### <a name="-python--pip--bootstrap--pip_lookup_path"></a>`pip_lookup_path`
+
+Data type: `Array[String[1]]`
+
+
+
 ##### <a name="-python--pip--bootstrap--exec_provider"></a>`exec_provider`
 
 Data type: `String[1]`
@@ -753,12 +749,10 @@ Default value: `'root'`
 
 ##### <a name="-python--pip--group"></a>`group`
 
-Data type: `Optional[String[1]]`
+Data type: `String[1]`
 
 The group of the virtualenv being manipulated.
 
-Default value: `getvar('python::params::group')`
-
 ##### <a name="-python--pip--index"></a>`index`
 
 Data type: `Variant[Boolean,String[1]]`

data/common.yaml

@@ -0,0 +1,11 @@
+---
+python::version: '3'
+python::use_epel: true
+python::gunicorn_package_name: 'gunicorn'
+python::manage_pip_package: true
+python::manage_venv_package: true
+python::pip::group: 'root'
+python::pip::bootstrap::pip_lookup_path:
+  - /bin
+  - /usr/bin
+  - /usr/local/bin

data/os/AIX.yaml

@@ -0,0 +1,7 @@
+---
+python::pip::group: 'system'
+python::pip::bootstrap::pip_lookup_path:
+  - /bin
+  - /usr/bin
+  - /usr/local/bin
+  - /opt/freeware/bin/

data/os/Archlinux.yaml

@@ -0,0 +1,4 @@
+---
+python::version: 'system'
+python::manage_pip_package: false
+python::manage_venv_package: false

data/os/RedHat.yaml

@@ -0,0 +1,3 @@
+---
+python::use_epel: true
+python::gunicorn_package_name: 'python-gunicorn'

data/os/RedHat/CentOS/8.yaml

@@ -0,0 +1,2 @@
+---
+python::gunicorn_package_name: 'python3-gunicorn'

data/os/RedHat/Fedora.yaml

@@ -0,0 +1,2 @@
+---
+python::use_epel: false

data/os/RedHat/RedHat/8.yaml

@@ -0,0 +1,2 @@
+---
+python::gunicorn_package_name: 'python3-gunicorn'

hiera.yaml

@@ -0,0 +1,19 @@
+---
+version: 5
+
+defaults:
+  datadir: 'data'
+  data_hash: 'yaml_data'
+
+hierarchy:
+  - name: 'family/name/major'
+    path: 'os/%{facts.os.family}/%{facts.os.name}/%{facts.os.release.major}.yaml'
+
+  - name: 'family/name'
+    path: 'os/%{facts.os.family}/%{facts.os.name}.yaml'
+
+  - name: 'family'
+    path: 'os/%{facts.os.family}.yaml'
+
+  - name: 'common'
+    path: 'common.yaml'

manifests/init.pp

@@ -37,29 +37,29 @@
 #   }
 #
 class python (
+  Python::Version            $version,
+  Boolean                    $manage_venv_package,
+  Boolean                    $manage_pip_package,
+  String[1]                  $gunicorn_package_name,
+  Boolean                    $use_epel,
   Python::Package::Ensure    $ensure                      = 'present',
-  Python::Version            $version                     = $facts['os']['family'] ? { 'Archlinux' => 'system', default => '3' },
   Python::Package::Ensure    $pip                         = 'present',
   Python::Package::Ensure    $dev                         = 'absent',
   Python::Package::Ensure    $venv                        = 'absent',
   Python::Package::Ensure    $gunicorn                    = 'absent',
   Boolean                    $manage_gunicorn             = true,
   Boolean                    $manage_python_package       = true,
-  Boolean                    $manage_venv_package         = $python::params::manage_venv_package,
-  Boolean                    $manage_pip_package          = $python::params::manage_pip_package,
-  String[1]                  $gunicorn_package_name       = $python::params::gunicorn_package_name,
   Optional[Python::Provider] $provider                    = undef,
   Hash                       $python_pips                 = {},
   Hash                       $python_pyvenvs              = {},
   Hash                       $python_requirements         = {},
   Hash                       $python_dotfiles             = {},
-  Boolean                    $use_epel                    = $python::params::use_epel,
   Boolean                    $rhscl_use_public_repository = true,
   Stdlib::Httpurl            $anaconda_installer_url      = 'https://repo.anaconda.com/archive/Anaconda3-5.2.0-Linux-x86_64.sh',
   Stdlib::Absolutepath       $anaconda_install_path       = '/opt/python',
   Boolean                    $manage_scl                  = true,
   Optional[Python::Umask]    $umask                       = undef,
-) inherits python::params {
+) {
   $exec_prefix = $provider ? {
     'scl'   => "/usr/bin/scl enable ${version} -- ",
     'rhscl' => "/usr/bin/scl enable ${version} -- ",