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module ActiveJob
# Raised when an exception is raised during job arguments deserialization.
#
# Wraps the original exception raised as +original_exception+.
class DeserializationError < StandardError
attr_reader :original_exception
def initialize(e)
super ("Error while trying to deserialize arguments: #{e.message}")
@original_exception = e
set_backtrace e.backtrace
end
end
# Raised when an unsupported argument type is being set as job argument. We
# currently support NilClass, Fixnum, Float, String, TrueClass, FalseClass,
# Bignum and object that can be represented as GlobalIDs (ex: Active Record).
# Also raised if you set the key for a Hash something else than a string or
# a symbol.
class SerializationError < ArgumentError
end
module Arguments
extend self
TYPE_WHITELIST = [ NilClass, Fixnum, Float, String, TrueClass, FalseClass, Bignum ]
def serialize(arguments)
arguments.map { |argument| serialize_argument(argument) }
end
def deserialize(arguments)
arguments.map { |argument| deserialize_argument(argument) }
end
private
def serialize_argument(argument)
case argument
when GlobalID::Identification
argument.global_id.to_s
when *TYPE_WHITELIST
argument
when Array
serialize(argument)
when Hash
Hash[ argument.map { |key, value| [ serialize_hash_key(key), serialize_argument(value) ] } ]
else
raise SerializationError.new("Unsupported argument type: #{argument.class.name}")
end
end
def deserialize_argument(argument)
case argument
when Array
deserialize(argument)
when Hash
Hash[ argument.map { |key, value| [ key, deserialize_argument(value) ] } ].with_indifferent_access
else
GlobalID::Locator.locate(argument) || argument
end
rescue => e
raise DeserializationError.new(e)
end
def serialize_hash_key(key)
case key
when String, Symbol
key.to_s
else
raise SerializationError.new("Unsupported hash key type: #{key.class.name}")
end
end
end
end
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