Add dedicated libraries to access CI information and API

Signed-off-by: Balasankar "Balu" C <balasankar@gitlab.com>

lib/gitlab/api_client.rb

@@ -0,0 +1,12 @@
+require_relative 'build/info/ci'
+require_relative 'build/info/secrets'
+
+require 'gitlab'
+
+module Gitlab
+  class APIClient
+    def initialize(endpoint = Build::Info::CI.api_v4_url, token = Build::Info::Secrets.api_token)
+      @client = ::Gitlab::Client.new(endpoint: endpoint, private_token: token)
+    end
+  end
+end

lib/gitlab/build/info/ci.rb

@@ -0,0 +1,39 @@
+require_relative '../../util'
+require_relative '../../api_client'
+require_relative '../check'
+
+module Build
+  class Info
+    class CI
+      class << self
+        def branch_name
+          Gitlab::Util.get_env('CI_COMMIT_BRANCH')
+        end
+
+        def tag_name
+          Gitlab::Util.get_env('CI_COMMIT_TAG')
+        end
+
+        def project_id
+          Gitlab::Util.get_env('CI_PROJECT_ID')
+        end
+
+        def pipeline_id
+          Gitlab::Util.get_env('CI_PIPELINE_ID')
+        end
+
+        def job_id
+          Gitlab::Util.get_env('CI_JOB_ID')
+        end
+
+        def job_token
+          Gitlab::Util.get_env('CI_JOB_TOKEN')
+        end
+
+        def api_v4_url
+          Gitlab::Util.get_env('CI_API_V4_URL')
+        end
+      end
+    end
+  end
+end

lib/gitlab/build/info/secrets.rb

@@ -0,0 +1,17 @@
+require_relative '../../util'
+
+module Build
+  class Info
+    class Secrets
+      class << self
+        def api_token(scope: 'reporter')
+          Gitlab::Util.get_env("GITLAB_API_#{scope.upcase}_TOKEN")
+        end
+
+        def ci_job_token
+          Build::Info::CI.job_token
+        end
+      end
+    end
+  end
+end

spec/spec_helper.rb

@@ -19,6 +19,14 @@ require 'knapsack'
 require 'gitlab/util'
 require 'rspec-parameterized'
 
+# Because our library directory is also named `gitlab`, it collides with
+# upstream 'gitlab' gem's code. So, we set a dummy value to the `VERSION`
+# constant so that the `gitlab` library can be required without issues. The
+# proper fix is renaming our directory to `omnibus_gitlab` to match convention.
+module Gitlab
+  VERSION = 'dummy-version'.freeze
+end
+
 # Load support libraries to provide common convenience methods for our tests
 Dir["./spec/support/**/*.rb"].each { |f| require f }