Added MariaDB Driver support

README.md

@@ -16,6 +16,7 @@ to do is create a layer and application with assigned RDS data source, then
 ## Support
 
 * Database
+  * MariaDB
   * MySQL
   * PostgreSQL
 * SCM
@@ -74,7 +75,7 @@ you don't need to use them. The chef will do all the job, and determine them
 for you.
 
 * `app['database']['adapter']`
-  * **Supported values:** `postgresql`, `mysql`
+  * **Supported values:** `mariadb`, `mysql`, `postgresql`
   * **Default:** `postgresql`
   * ActiveRecord adapter which will be used for database connection.
 * `app['database']['username']`

libraries/drivers_db_mysql.rb

@@ -3,7 +3,7 @@ module Drivers
   module Db
     class Mysql < Base
       adapter :mysql2
-      allowed_engines :mysql, :mysql2
+      allowed_engines :mysql, :mysql2, :mariadb
       packages debian: 'libmysqlclient-dev', rhel: 'mysql-devel'
     end
   end

libraries/drivers_dsl_packages.rb

@@ -5,11 +5,11 @@ module Packages
       def self.included(klass)
         klass.instance_eval do
           def packages(*to_support)
-            @packages ||= []
-            (to_support || []).each do |pkg|
-              @packages.push((pkg.is_a?(Hash) ? pkg : { all: pkg.to_s }).stringify_keys)
+            @packages ||= {}
+            Array.wrap(to_support).each do |pkg|
+              @packages = (pkg.is_a?(Hash) ? pkg : { all: Array.wrap(pkg).map(&:to_s) }).stringify_keys
             end
-            @packages.uniq
+            @packages
           end
         end
       end
@@ -19,8 +19,8 @@ def packages
       end
 
       def handle_packages(context)
-        packages.each do |pkg|
-          context.package(pkg.key?('all') ? pkg['all'] : pkg[node['platform_family']] || pkg[node['platform']]) do
+        Array.wrap(packages['all'] || packages[node['platform_family']] || packages[node['platform']]).each do |pkg|
+          context.package pkg do
             action :install
           end
         end