86 lines
2.0 KiB
Ruby
86 lines
2.0 KiB
Ruby
# frozen_string_literal: true
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# Interface to the Redis-backed cache store to keep track of complete cache keys
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# for a ReactiveCache resource.
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module Gitlab
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class SetCache
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attr_reader :expires_in
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def initialize(expires_in: 2.weeks)
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@expires_in = expires_in
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end
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def cache_key(key)
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"#{cache_namespace}:#{key}:set"
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end
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# Returns the number of keys deleted by Redis
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def expire(*keys)
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return 0 if keys.empty?
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with do |redis|
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keys_to_expire = keys.map { |key| cache_key(key) }
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Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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redis.unlink(*keys_to_expire)
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end
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end
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end
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def exist?(key)
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with { |redis| redis.exists?(cache_key(key)) } # rubocop:disable CodeReuse/ActiveRecord
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end
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def write(key, value)
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with do |redis|
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redis.pipelined do |pipeline|
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pipeline.sadd(cache_key(key), value)
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pipeline.expire(cache_key(key), expires_in)
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end
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end
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value
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end
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def read(key)
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with { |redis| redis.smembers(cache_key(key)) }
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end
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def include?(key, value)
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with { |redis| redis.sismember(cache_key(key), value) }
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end
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# Like include?, but also tells us if the cache was populated when it ran
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# by returning two booleans: [member_exists, set_exists]
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def try_include?(key, value)
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full_key = cache_key(key)
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with do |redis|
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redis.multi do |multi|
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multi.sismember(full_key, value)
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multi.exists?(full_key) # rubocop:disable CodeReuse/ActiveRecord
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end
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end
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end
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def ttl(key)
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with { |redis| redis.ttl(cache_key(key)) }
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end
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def count(key)
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with { |redis| redis.scard(cache_key(key)) }
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end
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private
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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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def cache_namespace
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Gitlab::Redis::Cache::CACHE_NAMESPACE
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end
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end
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end
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