Skip 'git annex init' when using 'gcryptsetup'

'gcryptsetup' is a special git-annex feature that does its own
initialization.

lib/gitlab_shell.rb

@@ -67,7 +67,7 @@ class GitlabShell
       @repo_name = escape_path(args[2].sub(/\A\/~\//, ''))
 
       # Make sure repository has git-annex enabled
-      init_git_annex(@repo_name)
+      init_git_annex(@repo_name) unless gcryptsetup?(args)
     when 'git-lfs-authenticate'
       raise DisallowedCommandError unless args.count >= 2
       @repo_name = escape_path(args[1])
@@ -174,4 +174,9 @@ class GitlabShell
       $logger.info "Enable git-annex for repository: #{path}."
     end
   end
+
+  def gcryptsetup?(args)
+    non_dashed = args.reject { |a| a.start_with?('-') }
+    non_dashed[0, 2] == %w{git-annex-shell gcryptsetup}
+  end
 end

spec/gitlab_shell_spec.rb

@@ -96,6 +96,14 @@ describe GitlabShell do
       it 'should init git-annex' do
         File.exists?(File.join(tmp_repos_path, 'dzaporozhets/gitlab.git/annex')).should be_true
       end
+
+      context 'with git-annex-shell gcryptsetup' do
+        let(:ssh_cmd) { 'git-annex-shell gcryptsetup /~/dzaporozhets/gitlab.git' }
+
+        it 'should not init git-annex' do
+          File.exists?(File.join(tmp_repos_path, 'dzaporozhets/gitlab.git/annex')).should be_false
+        end
+      end
     end
   end