Class: Avocado::Redis::Strategy

Inherits:
Object
  • Object
show all
Defined in:
lib/avocado/redis/strategy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url = ENV['REDIS_URL']) ⇒ Strategy

Returns a new instance of Strategy.



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# File 'lib/avocado/redis/strategy.rb', line 6

def initialize(url = ENV['REDIS_URL'])
  @redis = ::Redis.new url: url
end

Instance Attribute Details

#redis ⇒ Object (readonly)

Returns the value of attribute redis.



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# File 'lib/avocado/redis/strategy.rb', line 4

def redis
  @redis
end

Instance Method Details

#purge_old(upload_id) ⇒ Object 



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# File 'lib/avocado/redis/strategy.rb', line 22

def purge_old(upload_id)
  old_keys = keys.reject { |key| key.end_with? upload_id }
  redis.del(*old_keys) if old_keys.any?
end

#read ⇒ Object 



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# File 'lib/avocado/redis/strategy.rb', line 10

def read
  return [] if keys.empty?
  redis.mget(*keys).map do |value|
    JSON.parse value
  end
end

#write(data, upload_id) ⇒ Object 



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# File 'lib/avocado/redis/strategy.rb', line 17

def write(data, upload_id)
  key = "avocado-#{Time.current.to_s(:nsec)}-#{upload_id}"
  redis.set key, data.to_json
end