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# frozen_string_literal: true
module Gitlab
module ImportExport
class MergeRequestParser
FORKED_PROJECT_ID = nil
def initialize(project, diff_head_sha, merge_request, relation_hash)
@project = project
@diff_head_sha = diff_head_sha
@merge_request = merge_request
@relation_hash = relation_hash
end
def parse!
if fork_merge_request? && @diff_head_sha
@merge_request.source_project_id = @relation_hash['project_id']
fetch_ref unless branch_exists?(@merge_request.source_branch)
create_target_branch unless branch_exists?(@merge_request.target_branch)
end
# The merge_request_diff associated with the current @merge_request might
# be invalid. Than means, when the @merge_request object is saved, the
# @merge_request.merge_request_diff won't. This can leave the merge request
# in an invalid state, because a merge request must have an associated
# merge request diff.
# In this change, if the associated merge request diff is invalid, we set
# it to nil. This change, in association with the after callback
# :ensure_merge_request_diff in the MergeRequest class, makes that
# when the merge request is going to be created and it doesn't have
# one, a default one will be generated.
@merge_request.merge_request_diff = nil unless @merge_request.merge_request_diff&.valid?
@merge_request
end
def create_target_branch
@project.repository.create_branch(@merge_request.target_branch, @merge_request.target_branch_sha)
end
# Gitaly migration: https://gitlab.com/gitlab-org/gitaly/issues/1295
def fetch_ref
target_ref = Gitlab::Git::BRANCH_REF_PREFIX + @merge_request.source_branch
unless @project.repository.fetch_source_branch!(@project.repository, @diff_head_sha, target_ref)
Rails.logger.warn("Import/Export warning: Failed to create #{target_ref} for MR: #{@merge_request.iid}")
end
end
def branch_exists?(branch_name)
@project.repository.raw.branch_exists?(branch_name)
end
def fork_merge_request?
@relation_hash['source_project_id'] == FORKED_PROJECT_ID
end
end
end
end
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