Get rid of Gitlab::ShellEnv

app/services/git_hooks_service.rb

@@ -3,7 +3,7 @@ class GitHooksService
   def execute(user, repo_path, oldrev, newrev, ref)
     @repo_path  = repo_path
-    @user       = Gitlab::ShellEnv.gl_id(user)
+    @user       = Gitlab::GlId.gl_id(user)
     @oldrev     = oldrev
     @newrev     = newrev
     @ref        = ref

lib/gitlab/backend/grack_auth.rb

-require_relative 'shell_env'
-
 module Grack
   class AuthSpawner
     def self.call(env)
@@ -61,11 +59,6 @@ module Grack
       end
       @user = authenticate_user(login, password)
-
-      if @user
-        Gitlab::ShellEnv.set_env(@user)
-        @env['REMOTE_USER'] = @auth.username
-      end
     end
     def ci_request?(login, password)

lib/gitlab/backend/shell_env.rb

-module Gitlab
-  # This module provide 2 methods
-  # to set specific ENV variables for GitLab Shell
-  module ShellEnv
-    extend self
-
-    def set_env(user)
-      # Set GL_ID env variable
-      if user
-        ENV['GL_ID'] = gl_id(user)
-      end
-    end
-
-    def reset_env
-      # Reset GL_ID env variable
-      ENV['GL_ID'] = nil
-    end
-
-    def gl_id(user)
-      if user.present?
-        "user-#{user.id}"
-      else
-        # This empty string is used in the render_grack_auth_ok method
-        ""
-      end
-    end
-  end
-end

lib/gitlab/gl_id.rb

+module Gitlab
+  module GlId
+    def self.gl_id(user)
+      if user.present?
+        "user-#{user.id}"
+      else
+        ""
+      end
+    end
+  end
+end

lib/gitlab/workhorse.rb

@@ -8,7 +8,7 @@ module Gitlab
     class << self
       def git_http_ok(repository, user)
         {
-          'GL_ID' => Gitlab::ShellEnv.gl_id(user),
+          'GL_ID' => Gitlab::GlId.gl_id(user),
           'RepoPath' => repository.path_to_repo,
         }
       end