68 lines
2.9 KiB
Ruby
68 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Import
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module MergeRequestHelpers
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include DatabaseHelpers
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# rubocop: disable CodeReuse/ActiveRecord
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def create_merge_request_without_hooks(project, attributes, iid)
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# This work must be wrapped in a transaction as otherwise we can leave
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# behind incomplete data in the event of an error. This can then lead
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# to duplicate key errors when jobs are retried.
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MergeRequest.transaction do
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# When creating merge requests there are a lot of hooks that may
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# run, for many different reasons. Many of these hooks (e.g. the
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# ones used for rendering Markdown) are completely unnecessary and
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# may even lead to transaction timeouts.
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#
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# To ensure importing pull requests has a minimal impact and can
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# complete in a reasonable time we bypass all the hooks by inserting
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# the row and then retrieving it. We then only perform the
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# additional work that is strictly necessary.
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merge_request_id = insert_and_return_id(attributes, project.merge_requests)
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merge_request = project.merge_requests.reset.find(merge_request_id)
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[merge_request, false]
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end
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rescue ActiveRecord::InvalidForeignKey
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# It's possible the project has been deleted since scheduling this
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# job. In this case we'll just skip creating the merge request.
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[]
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rescue ActiveRecord::RecordNotUnique
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# It's possible we previously created the MR, but failed when updating
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# the Git data. In this case we'll just continue working on the
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# existing row.
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[project.merge_requests.find_by(iid: iid), true]
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def insert_or_replace_git_data(merge_request, source_branch_sha, target_branch_sha, already_exists = false)
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# These fields are set so we can create the correct merge request
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# diffs.
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merge_request.source_branch_sha = source_branch_sha
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merge_request.target_branch_sha = target_branch_sha
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merge_request.keep_around_commit
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# We force to recreate all diffs to replace all existing data
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# We use `.all` as otherwise `dependent: :nullify` (the default)
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# takes an effect
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merge_request.merge_request_diffs.all.delete_all if already_exists
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# MR diffs normally use an "after_save" hook to pull data from Git.
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# All of this happens in the transaction started by calling
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# create/save/etc. This in turn can lead to these transactions being
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# held open for much longer than necessary. To work around this we
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# first save the diff, then populate it.
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diff = merge_request.merge_request_diffs.build
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diff.importing = true
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diff.save
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diff.save_git_content
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diff.set_as_latest_diff
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end
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end
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end
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end
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