Add ChroniDurationAttribute concern

app/models/ci/runner.rb

@@ -3,6 +3,7 @@ module Ci
     extend Gitlab::Ci::Model
     include Gitlab::SQL::Pattern
     include RedisCacheable
+    include ChronicDurationAttribute
 
     RUNNER_QUEUE_EXPIRY_TIME = 60.minutes
     ONLINE_CONTACT_TIMEOUT = 1.hour
@@ -51,6 +52,8 @@ module Ci
 
     cached_attr_reader :version, :revision, :platform, :architecture, :contacted_at, :ip_address
 
+    chronic_duration_attribute :job_upper_timeout_user_readable, :job_upper_timeout
+
     # Searches for runners matching the given query.
     #
     # This method uses ILIKE on PostgreSQL and LIKE on MySQL.

app/models/concerns/chronic_duration_attribute.rb

+module ChronicDurationAttribute
+  extend ActiveSupport::Concern
+
+  class_methods do
+    def chronic_duration_attribute(virtual_attribute, source_attribute)
+      chronic_duration_attribute_reader(virtual_attribute, source_attribute)
+      chronic_duration_attribute_writer(virtual_attribute, source_attribute)
+    end
+
+    def chronic_duration_attribute_reader(virtual_attribute, source_attribute)
+      define_method(virtual_attribute) do
+        value = self.send(source_attribute) # rubocop:disable GitlabSecurity/PublicSend
+        ChronicDuration.output(value, format: :short) unless value.nil?
+      end
+    end
+
+    def chronic_duration_attribute_writer(virtual_attribute, source_attribute)
+      define_method("#{virtual_attribute}=") do |value|
+        new_value = ChronicDuration.parse(value).to_i
+        self.send("#{source_attribute}=", new_value) # rubocop:disable GitlabSecurity/PublicSend
+        new_value
+      end
+    end
+  end
+end

spec/models/concerns/chronic_duration_attribute_spec.rb

+require 'spec_helper'
+
+shared_examples 'ChronicDurationAttribute' do
+  describe 'dynamically defined methods' do
+    it { expect(subject.class).to be_public_method_defined(virtual_field) }
+    it { expect(subject.class).to be_public_method_defined("#{virtual_field}=") }
+
+    it 'parses chronic duration input' do
+      subject.send("#{virtual_field}=", "10m")
+
+      expect(subject.send(source_field)).to eq(600)
+    end
+
+    it 'outputs chronic duration formated value' do
+      subject.send("#{source_field}=", 120)
+
+      expect(subject.send(virtual_field)).to eq('2m')
+    end
+  end
+end
+
+describe 'ChronicDurationAttribute' do
+  let(:source_field) { :maximum_job_timeout }
+  let(:virtual_field) { :maximum_job_timeout_user_readable }
+  subject { Ci::Runner.new }
+
+  it_behaves_like 'ChronicDurationAttribute'
+end