module MergeRequests class RefreshService < MergeRequests::BaseService def execute(oldrev, newrev, ref) return true unless Gitlab::Git.branch_ref?(ref) @oldrev, @newrev = oldrev, newrev @branch_name = Gitlab::Git.ref_name(ref) find_new_commits # Be sure to close outstanding MRs before reloading them to avoid generating an # empty diff during a manual merge close_merge_requests reload_merge_requests reset_merge_when_build_succeeds # Leave a system note if a branch was deleted/added if branch_added? || branch_removed? comment_mr_branch_presence_changed end comment_mr_with_commits execute_mr_web_hooks true end private # Collect open merge requests that target same branch we push into # and close if push to master include last commit from merge request # We need this to close(as merged) merge requests that were merged into # target branch manually def close_merge_requests commit_ids = @commits.map(&:id) merge_requests = @project.merge_requests.opened.where(target_branch: @branch_name).to_a merge_requests = merge_requests.select(&:last_commit) merge_requests = merge_requests.select do |merge_request| commit_ids.include?(merge_request.last_commit.id) end merge_requests.uniq.select(&:source_project).each do |merge_request| MergeRequests::PostMergeService. new(merge_request.target_project, @current_user). execute(merge_request) end end def force_push? Gitlab::ForcePushCheck.force_push?(@project, @oldrev, @newrev) end # Refresh merge request diff if we push to source or target branch of merge request # Note: we should update merge requests from forks too def reload_merge_requests merge_requests = @project.merge_requests.opened.by_branch(@branch_name).to_a merge_requests += fork_merge_requests.by_branch(@branch_name).to_a merge_requests = filter_merge_requests(merge_requests) merge_requests.each do |merge_request| if merge_request.source_branch == @branch_name || force_push? merge_request.reload_code merge_request.mark_as_unchecked else mr_commit_ids = merge_request.commits.map(&:id) push_commit_ids = @commits.map(&:id) matches = mr_commit_ids & push_commit_ids if matches.any? merge_request.reload_code merge_request.mark_as_unchecked else merge_request.mark_as_unchecked end end end end def reset_merge_when_build_succeeds merge_requests_for_source_branch.each(&:reset_merge_when_build_succeeds) end def find_new_commits if branch_added? @commits = [] merge_request = merge_requests_for_source_branch.first return unless merge_request last_commit = merge_request.last_commit begin # Since any number of commits could have been made to the restored branch, # find the common root to see what has been added. common_ref = @project.repository.merge_base(last_commit.id, @newrev) # If the a commit no longer exists in this repo, gitlab_git throws # a Rugged::OdbError. This is fixed in https://gitlab.com/gitlab-org/gitlab_git/merge_requests/52 @commits = @project.repository.commits_between(common_ref, @newrev) if common_ref rescue end elsif branch_removed? # No commits for a deleted branch. @commits = [] else @commits = @project.repository.commits_between(@oldrev, @newrev) end end # Add comment about branches being deleted or added to merge requests def comment_mr_branch_presence_changed presence = branch_added? ? :add : :delete merge_requests_for_source_branch.each do |merge_request| SystemNoteService.change_branch_presence( merge_request, merge_request.project, @current_user, :source, @branch_name, presence) end end # Add comment about pushing new commits to merge requests def comment_mr_with_commits return unless @commits.present? merge_requests_for_source_branch.each do |merge_request| mr_commit_ids = Set.new(merge_request.commits.map(&:id)) new_commits, existing_commits = @commits.partition do |commit| mr_commit_ids.include?(commit.id) end SystemNoteService.add_commits(merge_request, merge_request.project, @current_user, new_commits, existing_commits, @oldrev) end end # Call merge request webhook with update branches def execute_mr_web_hooks merge_requests_for_source_branch.each do |merge_request| execute_hooks(merge_request, 'update') end end def filter_merge_requests(merge_requests) merge_requests.uniq.select(&:source_project) end def merge_requests_for_source_branch @source_merge_requests ||= begin merge_requests = @project.origin_merge_requests.opened.where(source_branch: @branch_name).to_a merge_requests += fork_merge_requests.where(source_branch: @branch_name).to_a filter_merge_requests(merge_requests) end end def fork_merge_requests @fork_merge_requests ||= @project.fork_merge_requests.opened end def branch_added? Gitlab::Git.blank_ref?(@oldrev) end def branch_removed? Gitlab::Git.blank_ref?(@newrev) end end end