Partially rever "Revert "Merge branch 'gitaly-mandatory-20180703-jv' into 'master'""

This partially reverts commit 64dfe2cb.

lib/gitlab/git/commit.rb

@@ -63,12 +63,8 @@ module Gitlab
           # This saves us an RPC round trip.
           return nil if commit_id.include?(':')
 
-          commit = repo.gitaly_migrate(:find_commit) do |is_enabled|
-            if is_enabled
+          commit = repo.wrapped_gitaly_errors do
             repo.gitaly_commit_client.find_commit(commit_id)
-            else
-              rugged_find(repo, commit_id)
-            end
           end
 
           decorate(repo, commit) if commit
@@ -78,12 +74,6 @@ module Gitlab
           nil
         end
 
-        def rugged_find(repo, commit_id)
-          obj = repo.rev_parse_target(commit_id)
-
-          obj.is_a?(Rugged::Commit) ? obj : nil
-        end
-
         # Get last commit for HEAD
         #
         # Ex.

lib/gitlab/git/conflict/resolver.rb

@@ -12,14 +12,8 @@ module Gitlab
         end
 
         def conflicts
-          @conflicts ||= begin
-            @target_repository.gitaly_migrate(:conflicts_list_conflict_files) do |is_enabled|
-              if is_enabled
+          @conflicts ||= @target_repository.wrapped_gitaly_errors do
             gitaly_conflicts_client(@target_repository).list_conflict_files.to_a
-              else
-                rugged_list_conflict_files
-              end
-            end
           end
         rescue GRPC::FailedPrecondition => e
           raise Gitlab::Git::Conflict::Resolver::ConflictSideMissing.new(e.message)
@@ -28,12 +22,8 @@ module Gitlab
         end
 
         def resolve_conflicts(source_repository, resolution, source_branch:, target_branch:)
-          source_repository.gitaly_migrate(:conflicts_resolve_conflicts) do |is_enabled|
-            if is_enabled
+          source_repository.wrapped_gitaly_errors do
             gitaly_conflicts_client(source_repository).resolve_conflicts(@target_repository, resolution, source_branch, target_branch)
-            else
-              rugged_resolve_conflicts(source_repository, resolution, source_branch, target_branch)
-            end
           end
         end
 
@@ -61,57 +51,6 @@ module Gitlab
         def gitaly_conflicts_client(repository)
           repository.gitaly_conflicts_client(@our_commit_oid, @their_commit_oid)
         end
-
-        def write_resolved_file_to_index(repository, index, file, params)
-          if params[:sections]
-            resolved_lines = file.resolve_lines(params[:sections])
-            new_file = resolved_lines.map { |line| line[:full_line] }.join("\n")
-
-            new_file << "\n" if file.our_blob.data.end_with?("\n")
-          elsif params[:content]
-            new_file = file.resolve_content(params[:content])
-          end
-
-          our_path = file.our_path
-
-          oid = repository.rugged.write(new_file, :blob)
-          index.add(path: our_path, oid: oid, mode: file.our_mode)
-          index.conflict_remove(our_path)
-        end
-
-        def rugged_list_conflict_files
-          target_index = @target_repository.rugged.merge_commits(@our_commit_oid, @their_commit_oid)
-
-          # We don't need to do `with_repo_branch_commit` here, because the target
-          # project always fetches source refs when creating merge request diffs.
-          conflict_files(@target_repository, target_index)
-        end
-
-        def rugged_resolve_conflicts(source_repository, resolution, source_branch, target_branch)
-          source_repository.with_repo_branch_commit(@target_repository, target_branch) do
-            index = source_repository.rugged.merge_commits(@our_commit_oid, @their_commit_oid)
-            conflicts = conflict_files(source_repository, index)
-
-            resolution.files.each do |file_params|
-              conflict_file = conflict_for_path(conflicts, file_params[:old_path], file_params[:new_path])
-
-              write_resolved_file_to_index(source_repository, index, conflict_file, file_params)
-            end
-
-            unless index.conflicts.empty?
-              missing_files = index.conflicts.map { |file| file[:ours][:path] }
-
-              raise ResolutionError, "Missing resolutions for the following files: #{missing_files.join(', ')}"
-            end
-
-            commit_params = {
-              message: resolution.commit_message,
-              parents: [@our_commit_oid, @their_commit_oid]
-            }
-
-            source_repository.commit_index(resolution.user, source_branch, index, commit_params)
-          end
-        end
       end
     end
   end

spec/services/merge_requests/conflicts/list_service_spec.rb

@@ -84,23 +84,5 @@ describe MergeRequests::Conflicts::ListService do
 
       expect(service.can_be_resolved_in_ui?).to be_falsey
     end
-
-    context 'with gitaly disabled', :skip_gitaly_mock do
-      it 'returns a falsey value when the MR has a missing ref after a force push' do
-        merge_request = create_merge_request('conflict-resolvable')
-        service = conflicts_service(merge_request)
-        allow_any_instance_of(Rugged::Repository).to receive(:merge_commits).and_raise(Rugged::OdbError)
-
-        expect(service.can_be_resolved_in_ui?).to be_falsey
-      end
-
-      it 'returns a falsey value when the MR has a missing revision after a force push' do
-        merge_request = create_merge_request('conflict-resolvable')
-        service = conflicts_service(merge_request)
-        allow(merge_request).to receive_message_chain(:target_branch_head, :raw, :id).and_return(Gitlab::Git::BLANK_SHA)
-
-        expect(service.can_be_resolved_in_ui?).to be_falsey
-      end
-    end
   end
 end

spec/services/merge_requests/conflicts/resolve_service_spec.rb

@@ -123,17 +123,6 @@ describe MergeRequests::Conflicts::ResolveService do
           expect(merge_request_from_fork.source_branch_head.parents.map(&:id))
             .to eq(['404fa3fc7c2c9b5dacff102f353bdf55b1be2813', target_head])
         end
-
-        context 'when gitaly is disabled', :skip_gitaly_mock do
-          it 'gets conflicts from the source project' do
-            # REFACTOR NOTE: We used to test that `project.repository.rugged` wasn't
-            # used in this case, but since the refactor, for simplification,
-            # we always use that repository for read only operations.
-            expect(forked_project.repository.rugged).to receive(:merge_commits).and_call_original
-
-            subject
-          end
-        end
       end
     end