class LiteCable::Server::SubscribersMap

From github.com/rails/rails/blob/v5.0.1/actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb

Attributes

sockets[R]
streams[R]

Public Class Methods

new() click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 9
def initialize
  @streams = Hash.new do |streams, stream_id|
    streams[stream_id] = Hash.new { |channels, channel_id| channels[channel_id] = [] }
  end
  @sockets = Hash.new { |h, k| h[k] = [] }
  @sync = Mutex.new
end

Public Instance Methods

add_subscriber(stream, socket, channel) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 17
def add_subscriber(stream, socket, channel)
  @sync.synchronize do
    @streams[stream][channel] << socket
    @sockets[socket] << [channel, stream]
  end
end
broadcast(stream, message, coder) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 44
def broadcast(stream, message, coder)
  list = @sync.synchronize do
    return unless @streams.key?(stream)

    @streams[stream].to_a
  end

  list.each do |(channel_id, sockets)|
    cmessage = channel_message(channel_id, message, coder)
    sockets.each { |s| s.transmit cmessage }
  end
end
remove_socket(socket, channel) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 32
def remove_socket(socket, channel)
  list = @sync.synchronize do
    return unless @sockets.key?(socket)

    @sockets[socket].dup
  end

  list.each do |(channel_id, stream)|
    remove_subscriber(stream, socket, channel) if channel == channel_id
  end
end
remove_subscriber(stream, socket, channel) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 24
def remove_subscriber(stream, socket, channel)
  @sync.synchronize do
    @streams[stream][channel].delete(socket)
    @sockets[socket].delete([channel, stream])
    cleanup stream, socket, channel
  end
end

Private Instance Methods

channel_message(channel_id, message, coder) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 65
def channel_message(channel_id, message, coder)
  coder.encode(identifier: channel_id, message: message)
end
cleanup(stream, socket, channel) click to toggle source
# File lib/lite_cable/server/subscribers_map.rb, line 59
def cleanup(stream, socket, channel)
  @streams[stream].delete(channel) if @streams[stream][channel].empty?
  @streams.delete(stream) if @streams[stream].empty?
  @sockets.delete(socket) if @sockets[socket].empty?
end