This is a realtime events/statistics recording and distribution backend written in Go. The backend is designed to receive messages via UDP and publish them via Websockets and a ZMQ pub/sub socket:
Incoming events/stats are broadcast out to any listening websocket clients.
$ go run main.go --zmqsocket=tcp://:6000 --udphost=host:5555 --wshost=host:5555 --ssehost=localhost:5556 --accesstoken=foobar
| Option | Description | example |
|---|---|---|
zmqsocket |
ZMQ socket to publish events to. | tcp://6000 |
udphost |
UDP host:port to listen for incoming events on | someserver:5555 |
wshost |
host:port for Websockets endpoint | somepublicserver.com:80 |
ssehost |
host:port for Server Sent Events endpoint | somepublicserver:5555 |
accesstoken |
Access token to authenticate public endpoints | "foobar123" |
Consumer programs can subscribe to all or some event types on the ZMQ socket. Ruby example:
require 'zmq'
require 'msgpack'
context = ZMQ::Context.new
chans = %w(order pageview)
sub = context.socket ZMQ::SUB
sub.connect "tcp://127.0.0.1:6000"
chans.each { |ch| sub.setsockopt ZMQ::SUBSCRIBE, ch }
puts "Listening to events"
while line = sub.recv
chan, msg = line.split ' ', 2
event = MessagePack.unpack(msg)
puts "##{chan}: #{event['data']['account']} tz #{event['data']['tz']}"
end