63 lines
1.6 KiB
Ruby
63 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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require 'set'
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module Gitlab
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module Metrics
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module Dashboard
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class Cache
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CACHE_KEYS = 'all_cached_metric_dashboards'
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class << self
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# This class method (Gitlab::Metrics::Dashboard::Cache.fetch) can be used
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# when the key does not need to be deleted by `delete_all!`.
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# For example, out of the box dashboard caches do not need to be deleted.
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delegate :fetch, to: :"Rails.cache"
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alias_method :for, :new
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end
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def initialize(project)
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@project = project
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end
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# Stores a dashboard in the cache, documenting the key
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# so the cache can be cleared in bulk at another time.
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def fetch(key)
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register_key(key)
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Rails.cache.fetch(key) { yield }
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end
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# Resets all dashboard caches, such that all
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# dashboard content will be loaded from source on
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# subsequent dashboard calls.
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def delete_all!
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all_keys.each { |key| Rails.cache.delete(key) }
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Rails.cache.delete(catalog_key)
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end
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private
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def register_key(key)
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new_keys = all_keys.add(key).to_a.join('|')
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Rails.cache.write(catalog_key, new_keys)
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end
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def all_keys
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keys = Rails.cache.read(catalog_key)&.split('|')
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Set.new(keys)
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end
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# One key to store them all...
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# This key is used to store the names of all the keys that contain this
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# project's dashboards.
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def catalog_key
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"#{CACHE_KEYS}_#{@project.id}"
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end
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end
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end
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end
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end
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