require 'socket' module Mongo # Wrapper class for Socket # # Emulates TCPSocket with operation and connection timeout # sans Timeout::timeout # class TCPSocket attr_accessor :pool def initialize(host, port, op_timeout=nil, connect_timeout=nil) @op_timeout = op_timeout @connect_timeout = connect_timeout # TODO: Prefer ipv6 if server is ipv6 enabled @host = Socket.getaddrinfo(host, nil, Socket::AF_INET).first[3] @port = port @socket_address = Socket.pack_sockaddr_in(@port, @host) @socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0) @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1) connect end def connect # Connect nonblock is broken in current versions of JRuby if RUBY_PLATFORM == 'java' require 'timeout' if @connect_timeout Timeout::timeout(@connect_timeout, OperationTimeout) do @socket.connect(@socket_address) end else @socket.connect(@socket_address) end else # Try to connect for @connect_timeout seconds begin @socket.connect_nonblock(@socket_address) rescue Errno::EINPROGRESS # Block until there is a response or error resp = IO.select([@socket], [@socket], [@socket], @connect_timeout) if resp.nil? raise ConnectionTimeoutError end end # If there was a failure this will raise an Error begin @socket.connect_nonblock(@socket_address) rescue Errno::EISCONN # Successfully connected end end end def send(data) @socket.write(data) end def read(maxlen, buffer) # Block on data to read for @op_timeout seconds begin ready = IO.select([@socket], nil, [@socket], @op_timeout) rescue IOError raise OperationFailure end if ready begin @socket.sysread(maxlen, buffer) rescue SystemCallError => ex # Needed because sometimes JRUBY doesn't throw Errno::ECONNRESET as it should # http://jira.codehaus.org/browse/JRUBY-6180 raise ConnectionFailure, ex rescue Errno::ENOTCONN, Errno::EBADF, Errno::ECONNRESET, Errno::EPIPE, Errno::ETIMEDOUT, EOFError => ex raise ConnectionFailure, ex rescue Errno::EINTR, Errno::EIO, IOError => ex raise OperationFailure, ex end else raise OperationTimeout end end def setsockopt(key, value, n) @socket.setsockopt(key, value, n) end def close @socket.close end def closed? @socket.closed? end end end