91 lines
2.5 KiB
Ruby
91 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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class AvatarCache
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class << self
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# Increment this if a breaking change requires
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# immediate cache expiry of all avatar caches.
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#
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# @return [Integer]
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VERSION = 2
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# @return [Symbol]
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BASE_KEY = :avatar_cache
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# @return [ActiveSupport::Duration]
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DEFAULT_EXPIRY = 7.days
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# Look up cached avatar data by email address.
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# This accepts a block to provide the value to be
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# cached in the event nothing is found.
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#
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# Multiple calls in the same request will be served from the
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# request store.
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#
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# @param email [String]
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# @param additional_keys [*Object] all must respond to `#to_s`
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# @param expires_in [ActiveSupport::Duration, Integer]
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# @yield [email, *additional_keys] yields the supplied params back to the block
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# @return [String]
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def by_email(email, *additional_keys, expires_in: DEFAULT_EXPIRY)
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key = email_key(email)
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subkey = additional_keys.join(":")
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Gitlab::SafeRequestStore.fetch([key, subkey]) do
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with do |redis|
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# Look for existing cache value
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cached = redis.hget(key, subkey)
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# Return the cached entry if set
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break cached unless cached.nil?
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# Otherwise, call the block to get the value
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to_cache = yield(email, *additional_keys).to_s
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# Set it in the cache
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redis.hset(key, subkey, to_cache)
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# Update the expiry time
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redis.expire(key, expires_in)
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# Return this new value
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break to_cache
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end
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end
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end
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# Remove one or more emails from the cache
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#
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# @param emails [String] one or more emails to delete
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# @return [Integer] the number of keys deleted
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def delete_by_email(*emails)
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return 0 if emails.empty?
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with do |redis|
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keys = emails.map { |email| email_key(email) }
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Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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if Gitlab::Redis::ClusterUtil.cluster?(redis)
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Gitlab::Redis::ClusterUtil.batch_unlink(keys, redis)
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else
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redis.unlink(*keys)
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end
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end
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end
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end
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private
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# @param email [String]
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# @return [String]
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def email_key(email)
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"#{BASE_KEY}:v#{VERSION}:#{email}"
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end
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def with(&blk)
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Gitlab::Redis::Cache.with(&blk) # rubocop:disable CodeReuse/ActiveRecord
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end
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end
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end
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end
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