Gitaly hook transistion changes

README.md

@@ -25,7 +25,7 @@ Git hooks that allow GitLab to validate Git pushes (e.g. "is this user
 allowed to push to this protected branch"). These hooks also trigger
 events in GitLab (e.g. to start a CI pipeline after a push). In
 GitLab's current architecture (Q4 2018) these hooks belong to Gitaly
-more than gitlab-shell. We [intend to move them to the Gitaly
+more than gitlab-shell. We [are moving them to the Gitaly
 repository](https://gitlab.com/gitlab-org/gitaly/issues/1226).
 
 ## Code status

lib/gitlab_init.rb

-ROOT_PATH = File.expand_path('..', __dir__)
+ROOT_PATH = ENV.fetch('GITLAB_SHELL_DIR', File.expand_path('..', __dir__))
+
+# We are transitioning parts of gitlab-shell into the gitaly project. In
+# gitaly, GITALY_EMBEDDED will be true.
+GITALY_EMBEDDED = false
 
 require_relative 'gitlab_config'

lib/http_helper.rb

@@ -78,7 +78,8 @@ module HTTPHelper
       $logger.warn('Failed to connect', method: method.to_s.upcase, url: url, error: e)
       raise GitlabNet::ApiUnreachableError
     ensure
-      $logger.info('finished HTTP request', method: method.to_s.upcase, url: url, duration: Time.new - start_time)
+      fields = { method: method.to_s.upcase, url: url, duration: Time.new - start_time, gitaly_embedded: GITALY_EMBEDDED }
+      $logger.info('finished HTTP request', fields)
     end
 
     case response