8 # A QueueRing is implemented as an array with elements in the form
9 # [chan, [message1, message2, ...]
10 # Note that the channel +chan+ has no actual bearing with the channels
11 # to which messages will be sent
36 cmess = @storage.assoc(chan)
38 idx = @storage.index(cmess)
42 @storage << [chan, [mess]]
48 warning "trying to access empty ring"
52 @last_idx = (@last_idx + 1) % @storage.length
53 mess = @storage[@last_idx][1].first
60 warning "trying to access empty ring"
63 @last_idx = (@last_idx + 1) % @storage.length
64 mess = @storage[@last_idx][1].shift
65 @storage.delete(@storage[@last_idx]) if @storage[@last_idx][1] == []
73 # a MessageQueue is an array of QueueRings
74 # rings have decreasing priority, so messages in ring 0
75 # are more important than messages in ring 1, and so on
76 @rings = Array.new(3) { |i|
80 # ring 0 is special in that if it's not empty, it will
81 # be popped. IOW, ring 0 can starve the other rings
82 # ring 0 is strictly FIFO and is therefore implemented
87 # the other rings are satisfied round-robin
98 def push(mess, chan=nil, cring=0)
101 warning "message #{mess} at ring 0 has channel #{chan}: channel will be ignored" if !chan.nil?
104 error "message #{mess} at ring #{ring} must have a channel" if chan.nil?
105 @rings[ring].push mess, chan
111 return false unless r.empty?
126 warning "trying to access empty ring"
131 mess = @rings[0].first
133 save_ring = @last_ring
134 (@rings.length - 1).times {
135 @last_ring = (@last_ring % (@rings.length - 1)) + 1
136 if !@rings[@last_ring].empty?
137 mess = @rings[@last_ring].next
141 @last_ring = save_ring
143 error "nil message" if mess.nil?
149 warning "trying to access empty ring"
154 return @rings[0].shift
156 (@rings.length - 1).times {
157 @last_ring = (@last_ring % (@rings.length - 1)) + 1
158 if !@rings[@last_ring].empty?
159 return @rings[@last_ring].shift
162 error "nil message" if mess.nil?
168 # wrapped TCPSocket for communication with the server.
169 # emulates a subset of TCPSocket functionality
172 MAX_IRC_SEND_PENALTY = 10
174 # total number of lines sent to the irc server
175 attr_reader :lines_sent
177 # total number of lines received from the irc server
178 attr_reader :lines_received
180 # total number of bytes sent to the irc server
181 attr_reader :bytes_sent
183 # total number of bytes received from the irc server
184 attr_reader :bytes_received
186 # accumulator for the throttle
187 attr_reader :throttle_bytes
189 # delay between lines sent
190 attr_reader :sendq_delay
193 attr_reader :sendq_burst
195 # server:: server to connect to
197 # host:: optional local host to bind to (ruby 1.7+ required)
198 # create a new IrcSocket
199 def initialize(server, port, host, sendq_delay=2, sendq_burst=4)
200 @timer = Timer::Timer.new
212 @sendq_delay = sendq_delay.to_f
216 @last_send = Time.new - @sendq_delay
217 @last_throttle = Time.new
220 @sendq_burst = sendq_burst.to_i
230 # open a TCP connection to the server
233 warning "reconnecting while connected"
238 @sock=TCPSocket.new(@server, @port, @host)
239 rescue ArgumentError => e
240 error "Your version of ruby does not support binding to a "
241 error "specific local address, please upgrade if you wish "
242 error "to use HOST = foo"
243 error "(this option has been disabled in order to continue)"
244 @sock=TCPSocket.new(@server, @port)
247 @sock=TCPSocket.new(@server, @port)
251 @sendq = MessageQueue.new
254 def sendq_delay=(newfreq)
255 debug "changing sendq frequency to #{newfreq}"
256 @qmutex.synchronize do
257 @sendq_delay = newfreq
267 def sendq_burst=(newburst)
268 @qmutex.synchronize do
269 @sendq_burst = newburst
273 # used to send lines to the remote IRCd by skipping the queue
274 # message: IRC message to send
275 # it should only be used for stuff that *must not* be queued,
276 # i.e. the initial PASS, NICK and USER command
277 # or the final QUIT message
278 def emergency_puts(message)
279 @qmutex.synchronize do
280 # debug "In puts - got mutex"
281 puts_critical(message)
285 # get the next line from the server (blocks)
288 warning "socket get attempted while closed"
294 reply.strip! if reply
295 debug "RECV: #{reply.inspect}"
298 warning "socket get failed: #{e.inspect}"
299 debug e.backtrace.join("\n")
304 def queue(msg, chan=nil, ring=0)
306 @qmutex.synchronize do
307 @sendq.push msg, chan, ring
311 # just send it if queueing is disabled
312 self.emergency_puts(msg)
316 # pop a message off the queue, send it
318 @qmutex.synchronize do
326 if (now >= (@last_send + @sendq_delay))
327 # after @sendq_delay has passed, we allow more @burst
328 # instead of resetting it to 0, we reduce it by 1
329 debug "decreasing @burst"
330 @burst -= 1 if @burst > 0
331 elsif (@burst >= @sendq_burst)
332 # nope. can't send anything, come back to us next tick...
333 debug "can't send yet"
337 debug "can send #{@sendq_burst - @burst} lines, there are #{@sendq.length} to send"
338 while !@sendq.empty? and @burst < @sendq_burst and now > @last_send - MAX_IRC_SEND_PENALTY
340 puts_critical(@sendq.shift)
341 @last_send += mess.irc_send_penalty
347 error "Spooling failed: #{e.inspect}"
348 error e.backtrace.join("\n")
355 @qmutex.synchronize do
361 warning "Clearing socket while disconnected"
365 # flush the TCPSocket
370 # Wraps Kernel.select on the socket
371 def select(timeout=nil)
372 Kernel.select([@sock], nil, nil, timeout)
375 # shutdown the connection to the server
377 @sock.shutdown(how) unless @sock.nil?
384 # same as puts, but expects to be called with a mutex held on @qmutex
385 def puts_critical(message)
386 # debug "in puts_critical"
388 debug "SEND: #{message.inspect}"
390 error "SEND attempted on closed socket"
392 @sock.send(message + "\n",0)
393 @last_send = Time.new
398 error "SEND failed: #{e.inspect}"