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Diffstat (limited to 'lib/gitlab/redis/hll.rb')
-rw-r--r-- | lib/gitlab/redis/hll.rb | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/gitlab/redis/hll.rb b/lib/gitlab/redis/hll.rb new file mode 100644 index 00000000000..ff5754675e2 --- /dev/null +++ b/lib/gitlab/redis/hll.rb @@ -0,0 +1,45 @@ +# frozen_string_literal: true + +module Gitlab + module Redis + class HLL + KEY_REGEX = %r{\A(\w|-|:)*\{\w*\}(\w|-|:)*\z}.freeze + KeyFormatError = Class.new(StandardError) + + def self.count(params) + self.new.count(params) + end + + def self.add(params) + self.new.add(params) + end + + def count(keys:) + Gitlab::Redis::SharedState.with do |redis| + redis.pfcount(*keys) + end + end + + # Check a basic format for the Redis key in order to ensure the keys are in the same hash slot + # + # Examples of keys + # project:{1}:set_a + # project:{1}:set_b + # project:{2}:set_c + # 2020-216-{project_action} + # i_{analytics}_dev_ops_score-2020-32 + def add(key:, value:, expiry:) + unless KEY_REGEX.match?(key) + raise KeyFormatError.new("Invalid key format. #{key} key should have changeable parts in curly braces. See https://docs.gitlab.com/ee/development/redis.html#multi-key-commands") + end + + Gitlab::Redis::SharedState.with do |redis| + redis.multi do |multi| + multi.pfadd(key, value) + multi.expire(key, expiry) + end + end + end + end + end +end |