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# frozen_string_literal: true
module Gitlab
module GithubImport
class MilestoneFinder
attr_reader :project
# The base cache key to use for storing/retrieving milestone IDs.
CACHE_KEY = 'github-import/milestone-finder/%{project}/%{iid}'
CACHE_OBJECT_NOT_FOUND = -1
# project - An instance of `Project`
def initialize(project)
@project = project
end
# issuable - An instance of `Gitlab::GithubImport::Representation::Issue`
# or `Gitlab::GithubImport::Representation::PullRequest`.
def id_for(issuable)
return unless issuable.milestone_number
milestone_iid = issuable.milestone_number
cache_key = cache_key_for(milestone_iid)
val = Gitlab::Cache::Import::Caching.read_integer(cache_key)
return if val == CACHE_OBJECT_NOT_FOUND
return val if val.present?
object_id = project.milestones.by_iid(milestone_iid).pick(:id) || CACHE_OBJECT_NOT_FOUND
Gitlab::Cache::Import::Caching.write(cache_key, object_id)
object_id == CACHE_OBJECT_NOT_FOUND ? nil : object_id
end
# rubocop: disable CodeReuse/ActiveRecord
def build_cache
mapping = @project
.milestones
.pluck(:id, :iid)
.each_with_object({}) do |(id, iid), hash|
hash[cache_key_for(iid)] = id
end
Gitlab::Cache::Import::Caching.write_multiple(mapping)
end
# rubocop: enable CodeReuse/ActiveRecord
def cache_key_for(iid)
format(CACHE_KEY, project: project.id, iid: iid)
end
end
end
end
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