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# frozen_string_literal: true
module ActiveJob
module Serializers
# Provides methods to serialize and deserialize `Hash` (`{key: field, ...}`)
# Only `String` or `Symbol` can be used as a key. Values will be serialized by known serializers
class HashSerializer < BaseSerializer
class << self
def serialize(hash)
symbol_keys = hash.each_key.grep(Symbol).map(&:to_s)
result = serialize_hash(hash)
result[key] = symbol_keys
result
end
def deserialize?(argument)
argument.is_a?(Hash) && argument[key]
end
def deserialize(hash)
result = hash.transform_values { |v| Serializers::deserialize(v) }
symbol_keys = result.delete(key)
transform_symbol_keys(result, symbol_keys)
end
private
def key
SYMBOL_KEYS_KEY
end
def serialize_hash(hash)
hash.each_with_object({}) do |(key, value), result|
result[serialize_hash_key(key)] = Serializers.serialize(value)
end
end
def serialize_hash_key(key)
raise SerializationError.new("Only string and symbol hash keys may be serialized as job arguments, but #{key.inspect} is a #{key.class}") unless [String, Symbol].include?(key.class)
raise SerializationError.new("Can't serialize a Hash with reserved key #{key.inspect}") if ActiveJob::Serializers.reserved_serializers_keys.include?(key.to_s)
key.to_s
end
def transform_symbol_keys(hash, symbol_keys)
hash.transform_keys do |key|
if symbol_keys.include?(key)
key.to_sym
else
key
end
end
end
def klass
Hash
end
end
end
end
end
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