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# frozen_string_literal: true
module MergeRequests
class RetargetChainService < MergeRequests::BaseService
MAX_RETARGET_MERGE_REQUESTS = 4
def execute(merge_request)
return unless Feature.enabled?(:retarget_merge_requests, merge_request.target_project, default_enabled: :yaml)
# we can only retarget MRs that are targeting the same project
return unless merge_request.for_same_project? && merge_request.merged?
# find another merge requests that
# - as a target have a current source project and branch
other_merge_requests = merge_request.source_project
.merge_requests
.opened
.by_target_branch(merge_request.source_branch)
.preload_source_project
.limit(MAX_RETARGET_MERGE_REQUESTS)
other_merge_requests.find_each do |other_merge_request|
# Update only MRs on projects that we have access to
next unless can?(current_user, :update_merge_request, other_merge_request.source_project)
::MergeRequests::UpdateService
.new(other_merge_request.source_project, current_user,
target_branch: merge_request.target_branch,
target_branch_was_deleted: true)
.execute(other_merge_request)
end
end
end
end
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