20 lines
491 B
Ruby
20 lines
491 B
Ruby
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module OnlineStatusTracker
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def self.add_subscription(channel_id)
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count = subscription_count(channel_id)
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::Redis::Alfred.setex(channel_id, count + 1)
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end
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def self.remove_subscription(channel_id)
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count = subscription_count(channel_id)
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if count == 1
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::Redis::Alfred.delete(channel_id)
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elsif count != 0
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::Redis::Alfred.setex(channel_id, count - 1)
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end
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end
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def self.subscription_count(channel_id)
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::Redis::Alfred.get(channel_id).to_i
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end
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end
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