Contents

module FFI
  module HiredisVip
    class Exists
      def initialize(client)
        @client = client
      end

      def exists(*keys)
        reply = nil
        keys = keys.flatten
        number_of_exists = keys.size
        command = "EXISTS#{' %b' * number_of_exists}"
        command_args = []
        keys.each do |key|
          command_args << :pointer << key << :size_t << key.size
        end

        synchronize do |connection|
          reply = @client.execute_command(connection, command, *command_args)
        end

        return nil if reply.nil? || reply.null?

        case reply[:type] 
        when :REDIS_REPLY_INTEGER
          reply[:integer]
        else
          0
        end
      ensure
        ::FFI::HiredisVip::Core.freeReplyObject(reply.pointer) if reply
      end

      private

      def synchronize
        @client.synchronize do |connection|
          yield(connection)
        end
      end

    end # class Exists
  end # module HiredisVip
end # module FFI

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
ffi-hiredis_vip-0.1.0.pre4	lib/ffi/hiredis_vip/exists.rb