Migrate Repository#last_commit_for_path to Gitaly

Closes gitaly#433

2 files changed, 27 insertions, 8 deletions

diff --git a/lib/gitlab/git/repository.rb b/lib/gitlab/git/repository.rb
index ffe2c8b91bb..734aed8fbc1 100644
--- a/lib/gitlab/git/repository.rb
+++ b/lib/gitlab/git/repository.rb
@@ -683,6 +683,14 @@ module Gitlab
         @gitaly_repository_client ||= Gitlab::GitalyClient::RepositoryService.new(self)
       end
 
+      def gitaly_migrate(method, &block)
+        Gitlab::GitalyClient.migrate(method, &block)
+      rescue GRPC::NotFound => e
+        raise NoRepository.new(e)
+      rescue GRPC::BadStatus => e
+        raise CommandError.new(e)
+      end
+
       private
 
       # Gitaly note: JV: Trying to get rid of the 'filter' option so we can implement this with 'git'.
@@ -998,6 +1006,11 @@ module Gitlab
         end.sort_by(&:name)
       end
 
+      def last_commit_for_path_by_rugged(sha, path)
+        sha = last_commit_id_for_path(sha, path)
+        commit(sha)
+      end
+
       def tags_from_gitaly
         gitaly_ref_client.tags
       end
@@ -1017,14 +1030,6 @@ module Gitlab
 
         raw_output.to_i
       end
-
-      def gitaly_migrate(method, &block)
-        Gitlab::GitalyClient.migrate(method, &block)
-      rescue GRPC::NotFound => e
-        raise NoRepository.new(e)
-      rescue GRPC::BadStatus => e
-        raise CommandError.new(e)
-      end
     end
   end
 end
diff --git a/lib/gitlab/gitaly_client/commit_service.rb b/lib/gitlab/gitaly_client/commit_service.rb
index b1424a458e9..3f6c2c09418 100644
--- a/lib/gitlab/gitaly_client/commit_service.rb
+++ b/lib/gitlab/gitaly_client/commit_service.rb
@@ -97,6 +97,20 @@ module Gitlab
         GitalyClient.call(@repository.storage, :commit_service, :count_commits, request).count
       end
 
+      def last_commit_for_path(revision, path)
+        request = Gitaly::LastCommitForPathRequest.new(
+          repository: @gitaly_repo,
+          revision: revision.force_encoding(Encoding::ASCII_8BIT),
+          path: path.to_s.force_encoding(Encoding::ASCII_8BIT)
+        )
+
+        gitaly_commit = GitalyClient.call(@repository.storage, :commit_service, :last_commit_for_path, request).commit
+        return unless gitaly_commit
+
+        commit = GitalyClient::Commit.new(@repository, gitaly_commit)
+        Gitlab::Git::Commit.new(commit)
+      end
+
       def between(from, to)
         request = Gitaly::CommitsBetweenRequest.new(
           repository: @gitaly_repo,