Handle CI services config in new CI config classes

lib/ci/gitlab_ci_yaml_processor.rb

@@ -14,7 +14,7 @@ module Ci
     ALLOWED_CACHE_KEYS = [:key, :untracked, :paths]
     ALLOWED_ARTIFACTS_KEYS = [:name, :untracked, :paths, :when, :expire_in]
-    attr_reader :after_script, :services, :path, :cache
+    attr_reader :after_script, :path, :cache
     def initialize(config, path = nil)
       @ci_config = Gitlab::Ci::Config.new(config)
@@ -68,7 +68,7 @@ module Ci
       @after_script = @config[:after_script]
       @image = @config[:image]
-      @services = @config[:services]
+      @services = @ci_config.services
       @stages = @config[:stages] || @config[:types]
       @variables = @config[:variables] || {}
       @cache = @config[:cache]
@@ -127,10 +127,6 @@ module Ci
         raise ValidationError, "after_script should be an array of strings"
       end
-      unless @services.nil? || validate_array_of_strings(@services)
-        raise ValidationError, "services should be an array of strings"
-      end
-
       unless @stages.nil? || validate_array_of_strings(@stages)
         raise ValidationError, "stages should be an array of strings"
       end

lib/gitlab/ci/config.rb

@@ -7,7 +7,7 @@ module Gitlab
       ##
       # Temporary delegations that should be removed after refactoring
       #
-      delegate :before_script, :image, to: :@global
+      delegate :before_script, :image, :services, to: :@global
       def initialize(config)
         @config = Loader.new(config).load!

lib/gitlab/ci/config/node/global.rb

@@ -14,6 +14,9 @@ module Gitlab
           allow_node :image, Image,
             description: 'Docker image that will be used to execute jobs.'
+
+          allow_node :services, Services,
+            description: 'Docker images that will be linked to the container.'
         end
       end
     end

lib/gitlab/ci/config/node/services.rb

+module Gitlab
+  module Ci
+    class Config
+      module Node
+        ##
+        # Entry that represents a configuration of Docker services.
+        #
+        class Services < Entry
+          include Validatable
+
+          validations do
+            validates :config, array_of_strings: true
+          end
+
+          def value
+            @config
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/ci/gitlab_ci_yaml_processor_spec.rb

@@ -1007,14 +1007,14 @@ EOT
         config = YAML.dump({ services: "test", rspec: { script: "test" } })
         expect do
           GitlabCiYamlProcessor.new(config, path)
-        end.to raise_error(GitlabCiYamlProcessor::ValidationError, "services should be an array of strings")
+        end.to raise_error(GitlabCiYamlProcessor::ValidationError, "Services config should be an array of strings")
       end
       it "returns errors if services parameter is not an array of strings" do
         config = YAML.dump({ services: [10, "test"], rspec: { script: "test" } })
         expect do
           GitlabCiYamlProcessor.new(config, path)
-        end.to raise_error(GitlabCiYamlProcessor::ValidationError, "services should be an array of strings")
+        end.to raise_error(GitlabCiYamlProcessor::ValidationError, "Services config should be an array of strings")
       end
       it "returns errors if job services parameter is not an array" do

spec/lib/gitlab/ci/config/node/global_spec.rb

@@ -22,7 +22,8 @@ describe Gitlab::Ci::Config::Node::Global do
   context 'when hash is valid' do
     let(:hash) do
       { before_script: ['ls', 'pwd'],
-        image: 'ruby:2.2' }
+        image: 'ruby:2.2',
+        services: ['postgres:9.1', 'mysql:5.5'] }
     end
     describe '#process!' do
@@ -33,7 +34,7 @@ describe Gitlab::Ci::Config::Node::Global do
       end
       it 'creates node object for each entry' do
-        expect(global.nodes.count).to eq 2
+        expect(global.nodes.count).to eq 3
       end
       it 'creates node object using valid class' do
@@ -56,6 +57,7 @@ describe Gitlab::Ci::Config::Node::Global do
         expect(global).not_to be_leaf
       end
     end
+
     context 'when not processed' do
       describe '#before_script' do
         it 'returns nil' do
@@ -78,6 +80,12 @@ describe Gitlab::Ci::Config::Node::Global do
           expect(global.image).to eq 'ruby:2.2'
         end
       end
+
+      describe '#services' do
+        it 'returns array of services' do
+          expect(global.services).to eq ['postgres:9.1', 'mysql:5.5']
+        end
+      end
     end
   end

spec/lib/gitlab/ci/config/node/services_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Ci::Config::Node::Services do
+  let(:entry) { described_class.new(config) }
+
+  describe '#process!' do
+    before { entry.process! }
+
+    context 'when entry config value is correct' do
+      let(:config) { ['postgres:9.1', 'mysql:5.5'] }
+
+      describe '#value' do
+        it 'returns array of services as is' do
+          expect(entry.value).to eq config
+        end
+      end
+
+      describe '#valid?' do
+        it 'is valid' do
+          expect(entry).to be_valid
+        end
+      end
+    end
+
+    context 'when entry value is not correct' do
+      let(:config) { 'ls' }
+
+      describe '#errors' do
+        it 'saves errors' do
+          expect(entry.errors)
+            .to include 'Services config should be an array of strings'
+        end
+      end
+
+      describe '#valid?' do
+        it 'is not valid' do
+          expect(entry).not_to be_valid
+        end
+      end
+    end
+  end
+end