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module Gitlab
module Database
BINARY_TYPE = if Gitlab::Database.postgresql?
# PostgreSQL defines its own class with slightly different
# behaviour from the default Binary type.
ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Bytea
else
ActiveRecord::Type::Binary
end
# Class for casting binary data to hexadecimal SHA1 hashes (and vice-versa).
#
# Using ShaAttribute allows you to store SHA1 values as binary while still
# using them as if they were stored as string values. This gives you the
# ease of use of string values, but without the storage overhead.
class ShaAttribute < BINARY_TYPE
PACK_FORMAT = 'H*'.freeze
# Casts binary data to a SHA1 in hexadecimal.
def type_cast_from_database(value)
value = super
value ? value.unpack(PACK_FORMAT)[0] : nil
end
# Casts a SHA1 in hexadecimal to the proper binary format.
def type_cast_for_database(value)
arg = value ? [value].pack(PACK_FORMAT) : nil
super(arg)
end
end
end
end
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