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| | # -*- encoding: binary -*-
# internal implementation details here, do not rely on this in your code
require "socket"
module MogileFS::SocketCommon
attr_reader :mogilefs_addr
def post_init(host, port)
@mogilefs_addr = "#{host}:#{port}"
Socket.const_defined?(:TCP_NODELAY) and
setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
self
end
def unreadable_socket!
raise MogileFS::UnreadableSocketError,
"#@mogilefs_addr never became readable"
end
def request_truncated!(written, expect, timeout)
raise MogileFS::RequestTruncatedError,
"request truncated (sent #{written} expected #{expect}) after #{timeout}s"
end
SEP_RE = /\A(.*?#{Regexp.escape("\n")})/
def timed_gets(timeout = 5)
unless defined?(@rbuf) && @rbuf
@rbuf = timed_read(1024, "", timeout) or return # EOF
end
begin
@rbuf.sub!(SEP_RE, "") and return $1
tmp ||= ""
if timed_read(1024, tmp, timeout)
@rbuf << tmp
else
# EOF, return the last buffered bit even without SEP_RE matching
# (not ideal for MogileFS, this is an error)
return @rbuf.empty? ? nil : @rbuf.slice!(0, @rbuf.size)
end
end while true
end
def read(size, buf = "", timeout = 5)
timed_read(size, buf, timeout) or return # nil/EOF
while (size -= buf.bytesize) > 0
tmp ||= ""
timed_read(size, tmp, timeout) or return buf # truncated
buf << tmp
end
buf # full read
end
def readpartial(size, buf = "", timeout = 5)
timed_read(size, buf, timeout) or raise EOFError, "end of file reached"
end
end
|