gitlab-org--gitlab-foss/app/models/project_services/ci_service.rb

# Base class for CI services
# List methods you need to implement to get your CI service
# working with GitLab Merge Requests
class CiService < Service
  default_value_for :category, 'ci'

  def valid_token?(token)
    self.respond_to?(:token) && self.token.present? && ActiveSupport::SecurityUtils.variable_size_secure_compare(token, self.token)
  end

  def self.supported_events
    %w(push)
  end

  # Return complete url to build page
  #
  # Ex.
  #   http://jenkins.example.com:8888/job/test1/scm/bySHA1/12d65c
  #
  def build_page(sha, ref)
    # implement inside child
  end

  # Return string with build status or :error symbol
  #
  # Allowed states: 'success', 'failed', 'running', 'pending', 'skipped'
  #
  #
  # Ex.
  #   @service.commit_status('13be4ac', 'master')
  #   # => 'success'
  #
  #   @service.commit_status('2abe4ac', 'dev')
  #   # => 'running'
  #
  #
  def commit_status(sha, ref)
    # implement inside child
  end
end