diff options
Diffstat (limited to 'lib/gitlab/github_import/importer/pull_request_importer.rb')
-rw-r--r-- | lib/gitlab/github_import/importer/pull_request_importer.rb | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/gitlab/github_import/importer/pull_request_importer.rb b/lib/gitlab/github_import/importer/pull_request_importer.rb new file mode 100644 index 00000000000..49d859f9624 --- /dev/null +++ b/lib/gitlab/github_import/importer/pull_request_importer.rb @@ -0,0 +1,91 @@ +# frozen_string_literal: true + +module Gitlab + module GithubImport + module Importer + class PullRequestImporter + attr_reader :pull_request, :project, :client, :user_finder, + :milestone_finder, :issuable_finder + + # pull_request - An instance of + # `Gitlab::GithubImport::Representation::PullRequest`. + # project - An instance of `Project` + # client - An instance of `Gitlab::GithubImport::Client` + def initialize(pull_request, project, client) + @pull_request = pull_request + @project = project + @client = client + @user_finder = UserFinder.new(project, client) + @milestone_finder = MilestoneFinder.new(project) + @issuable_finder = + GithubImport::IssuableFinder.new(project, pull_request) + end + + def execute + if (mr_id = create_merge_request) + issuable_finder.cache_database_id(mr_id) + end + end + + # Creates the merge request and returns its ID. + # + # This method will return `nil` if the merge request could not be + # created. + def create_merge_request + author_id, author_found = user_finder.author_id_for(pull_request) + + description = MarkdownText + .format(pull_request.description, pull_request.author, author_found) + + # This work must be wrapped in a transaction as otherwise we can leave + # behind incomplete data in the event of an error. This can then lead + # to duplicate key errors when jobs are retried. + MergeRequest.transaction do + attributes = { + iid: pull_request.iid, + title: pull_request.truncated_title, + description: description, + source_project_id: project.id, + target_project_id: project.id, + source_branch: pull_request.formatted_source_branch, + target_branch: pull_request.target_branch, + state: pull_request.state, + milestone_id: milestone_finder.id_for(pull_request), + author_id: author_id, + assignee_id: user_finder.assignee_id_for(pull_request), + created_at: pull_request.created_at, + updated_at: pull_request.updated_at + } + + # When creating merge requests there are a lot of hooks that may + # run, for many different reasons. Many of these hooks (e.g. the + # ones used for rendering Markdown) are completely unnecessary and + # may even lead to transaction timeouts. + # + # To ensure importing pull requests has a minimal impact and can + # complete in a reasonable time we bypass all the hooks by inserting + # the row and then retrieving it. We then only perform the + # additional work that is strictly necessary. + merge_request_id = GithubImport + .insert_and_return_id(attributes, project.merge_requests) + + merge_request = project.merge_requests.find(merge_request_id) + + # These fields are set so we can create the correct merge request + # diffs. + merge_request.source_branch_sha = pull_request.source_branch_sha + merge_request.target_branch_sha = pull_request.target_branch_sha + + merge_request.keep_around_commit + merge_request.merge_request_diffs.create + + merge_request.id + end + rescue ActiveRecord::InvalidForeignKey + # It's possible the project has been deleted since scheduling this + # job. In this case we'll just skip creating the merge request. + end + end + end + end +end |