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|
# frozen_string_literal: true
class BroadcastMessage < ActiveRecord::Base
include CacheMarkdownField
include Sortable
cache_markdown_field :message, pipeline: :broadcast_message
validates :message, presence: true
validates :starts_at, presence: true
validates :ends_at, presence: true
validates :color, allow_blank: true, color: true
validates :font, allow_blank: true, color: true
default_value_for :color, '#E75E40'
default_value_for :font, '#FFFFFF'
CACHE_KEY = 'broadcast_message_current_json'.freeze
LEGACY_CACHE_KEY = 'broadcast_message_current'.freeze
after_commit :flush_redis_cache
def self.current
messages = cache.fetch(CACHE_KEY, as: BroadcastMessage, expires_in: cache_expires_in) do
remove_legacy_cache_key
current_and_future_messages
end
return [] unless messages&.present?
now_or_future = messages.select(&:now_or_future?)
# If there are cached entries but none are to be displayed we'll purge the
# cache so we don't keep running this code all the time.
cache.expire(CACHE_KEY) if now_or_future.empty?
now_or_future.select(&:now?)
end
def self.current_and_future_messages
where('ends_at > :now', now: Time.zone.now).order_id_asc
end
def self.cache
Gitlab::JsonCache.new(cache_key_with_version: false)
end
def self.cache_expires_in
nil
end
# This can be removed in GitLab 12.0+
# The old cache key had an indefinite lifetime, and in an HA
# environment a one-shot migration would not work because the cache
# would be repopulated by a node that has not been upgraded.
def self.remove_legacy_cache_key
cache.expire(LEGACY_CACHE_KEY)
end
def active?
started? && !ended?
end
def started?
Time.zone.now >= starts_at
end
def ended?
ends_at < Time.zone.now
end
def now?
(starts_at..ends_at).cover?(Time.zone.now)
end
def future?
starts_at > Time.zone.now
end
def now_or_future?
now? || future?
end
def flush_redis_cache
self.class.cache.expire(CACHE_KEY)
self.class.remove_legacy_cache_key
end
end
|
