Merge branch 'git-fsck-worker-client-prep' into 'master'

Move SingleRepositoryWorker#fsck into Gitlab::Git::Repository

Closes gitaly#802

See merge request gitlab-org/gitlab-ce!15710

app/workers/repository_check/single_repository_worker.rb

@@ -32,16 +32,14 @@ module RepositoryCheck
     end
 
     def git_fsck(repository)
-      path = repository.path_to_repo
-      cmd = %W(nice git --git-dir=#{path} fsck)
-      output, status = Gitlab::Popen.popen(cmd)
+      return false unless repository.exists?
 
-      if status.zero?
-        true
-      else
-        Gitlab::RepositoryCheckLogger.error("command failed: #{cmd.join(' ')}\n#{output}")
-        false
-      end
+      repository.raw_repository.fsck
+
+      true
+    rescue Gitlab::Git::Repository::GitError => e
+      Gitlab::RepositoryCheckLogger.error(e.message)
+      false
     end
 
     def has_pushes?(project)

lib/gitlab/git/repository.rb

@@ -1118,9 +1118,11 @@ module Gitlab
       end
 
       # Refactoring aid; allows us to copy code from app/models/repository.rb
-      def run_git(args, env: {})
+      def run_git(args, env: {}, nice: false)
+        cmd = [Gitlab.config.git.bin_path, *args]
+        cmd.unshift("nice") if nice
         circuit_breaker.perform do
-          popen([Gitlab.config.git.bin_path, *args], path, env)
+          popen(cmd, path, env)
         end
       end
 
@@ -1187,6 +1189,12 @@ module Gitlab
         end
       end
 
+      def fsck
+        output, status = run_git(%W[--git-dir=#{path} fsck], nice: true)
+
+        raise GitError.new("Could not fsck repository:\n#{output}") unless status.zero?
+      end
+
       def gitaly_repository
         Gitlab::GitalyClient::Util.repository(@storage, @relative_path, @gl_repository)
       end