Added Sqlite Driver support

README.md

@@ -19,6 +19,7 @@ to do is create a layer and application with assigned RDS data source, then
   * MariaDB
   * MySQL
   * PostgreSQL
+  * Sqlite3
 * SCM
   * git
 * Framework
@@ -75,8 +76,8 @@ you don't need to use them. The chef will do all the job, and determine them
 for you.
 
 * `app['database']['adapter']`
-  * **Supported values:** `mariadb`, `mysql`, `postgresql`
-  * **Default:** `postgresql`
+  * **Supported values:** `mariadb`, `mysql`, `postgresql`, `sqlite3`
+  * **Default:** `sqlite3` (if no RDBMS is detected)
   * ActiveRecord adapter which will be used for database connection.
 * `app['database']['username']`
   * Username used to authenticate to the DB

libraries/drivers_db_base.rb

@@ -3,6 +3,7 @@ module Drivers
   module Db
     class Base < Drivers::Base
       include Drivers::Dsl::Defaults
+      include Drivers::Dsl::Output
       include Drivers::Dsl::Packages
 
       defaults encoding: 'utf8', host: 'localhost', reconnect: true
@@ -39,7 +40,7 @@ def out
 
         out_defaults.merge(
           adapter: adapter, username: options[:rds]['db_user'], password: options[:rds]['db_password'],
-          host: options[:rds]['address'], database: app['data_sources'].first['database_name']
+          host: options[:rds]['address'], database: app['data_sources'].first.try(:[], 'database_name')
         )
       end
       # rubocop:enable Metrics/AbcSize

libraries/drivers_db_sqlite.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+module Drivers
+  module Db
+    class Sqlite < Base
+      adapter :sqlite3
+      allowed_engines :sqlite, :sqlite3
+      packages debian: 'libsqlite3-dev', rhel: 'sqlite-devel'
+      output filter: [:adapter, :database, :pool, :timeout]
+
+      def out
+        output = super
+        output[:database] ||= 'db/data.sqlite3'
+        handle_output(output)
+      end
+    end
+  end
+end

libraries/helpers.rb

@@ -44,8 +44,12 @@ def every_enabled_application
 end
 
 def every_enabled_rds
-  rdses.each do |rds|
-    yield rds
+  if rdses.blank?
+    yield('engine' => 'sqlite')
+  else
+    rdses.each do |rds|
+      yield rds
+    end
   end
 end
 

spec/unit/recipes/configure_spec.rb

@@ -233,6 +233,34 @@
     end
   end
 
+  context 'Sqlite3' do
+    let(:dummy_node) do
+      node(deploy: { dummy_project: { database: { adapter: 'sqlite3' } } })
+    end
+    let(:chef_run) do
+      ChefSpec::SoloRunner.new(platform: 'ubuntu', version: '14.04') do |solo_node|
+        solo_node.set['deploy'] = dummy_node['deploy']
+      end.converge(described_recipe)
+    end
+
+    before do
+      stub_search(:aws_opsworks_app, '*:*').and_return([aws_opsworks_app(data_sources: [])])
+      stub_search(:aws_opsworks_rds_db_instance, '*:*').and_return([])
+    end
+
+    it 'creates proper database.yml template' do
+      db_config = Drivers::Db::Sqlite.new(
+        aws_opsworks_app(data_sources: []), dummy_node, rds: aws_opsworks_rds_db_instance(engine: 'sqlite3')
+      ).out
+      expect(db_config[:adapter]).to eq 'sqlite3'
+      expect(db_config[:database]).to eq 'db/data.sqlite3'
+      expect(chef_run)
+        .to render_file("/srv/www/#{aws_opsworks_app['shortname']}/shared/config/database.yml").with_content(
+          JSON.parse({ development: db_config, production: db_config }.to_json).to_yaml
+        )
+    end
+  end
+
   it 'empty node[\'deploy\']' do
     chef_run = ChefSpec::SoloRunner.new(platform: 'ubuntu', version: '14.04') do |solo_node|
       solo_node.set['lsb'] = node['lsb']

spec/unit/recipes/setup_spec.rb

@@ -163,6 +163,20 @@
     end
   end
 
+  context 'Sqlite' do
+    before do
+      stub_search(:aws_opsworks_rds_db_instance, '*:*').and_return([])
+    end
+
+    it 'installs required packages for debian' do
+      expect(chef_run).to install_package('libsqlite3-dev')
+    end
+
+    it 'installs required packages for rhel' do
+      expect(chef_run_rhel).to install_package('sqlite-devel')
+    end
+  end
+
   it 'empty node[\'deploy\']' do
     chef_run = ChefSpec::SoloRunner.new(platform: 'ubuntu', version: '14.04') do |solo_node|
       solo_node.set['lsb'] = node['lsb']