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