Class: Hitnmiss::RedisDriver

Inherits:
Object
  • Object
show all
Includes:
Driver::Interface
Defined in:
lib/hitnmiss/redis_driver.rb,
lib/hitnmiss/redis_driver-version.rb

Constant Summary collapse

VERSION = 
"1.1.0"

Instance Method Summary collapse

Constructor Details

#initialize(redis_url) ⇒ RedisDriver

Returns a new instance of RedisDriver.



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# File 'lib/hitnmiss/redis_driver.rb', line 9

def initialize(redis_url)
  @redis = Redis.new(:url => redis_url)
end

Instance Method Details

#all(keyspace) ⇒ Object 



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# File 'lib/hitnmiss/redis_driver.rb', line 36

def all(keyspace)
  separator = Hitnmiss::Repository::KeyGeneration::KEY_COMPONENT_SEPARATOR
  keys = get_keys("#{keyspace}#{separator}*")
  return [] if keys.empty?
  values = @redis.mget(*keys)
  loaded_values = []
  values.each do |value|
    loaded_values << deserialize_value(value).delete(:value) unless value.nil?
  end
  return loaded_values
end

#clear(keyspace) ⇒ Object 



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# File 'lib/hitnmiss/redis_driver.rb', line 48

def clear(keyspace)
  separator = Hitnmiss::Repository::KeyGeneration::KEY_COMPONENT_SEPARATOR
  keys = get_keys("#{keyspace}#{separator}*")
  @redis.del(*keys) unless keys.empty?
end

#delete(key) ⇒ Object 



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# File 'lib/hitnmiss/redis_driver.rb', line 32

def delete(key)
  @redis.del(key)
end

#get(key) ⇒ Object 



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# File 'lib/hitnmiss/redis_driver.rb', line 25

def get(key)
  cached_item = @redis.get(key)
  return Hitnmiss::Driver::Miss.new if cached_item.nil?
  deserialized_value = deserialize_value(cached_item)
  Hitnmiss::Driver::Hit.new(deserialized_value[:value], build_hit_keyword_args(deserialized_value))
end

#set(key, entity) ⇒ Object 



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# File 'lib/hitnmiss/redis_driver.rb', line 13

def set(key, entity)
  value = { value: entity.value }
  value[:updated_at] = internal_timestamp
  value[:fingerprint] = entity.fingerprint if entity.fingerprint
  value[:last_modified] = entity.last_modified if entity.last_modified
  if entity.expiration
    @redis.setex(key, entity.expiration, serialize_value(value))
  else
    @redis.set(key, serialize_value(value))
  end
end