-
Notifications
You must be signed in to change notification settings - Fork 0
/
events.clj
49 lines (41 loc) · 1.19 KB
/
events.clj
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
(ns re-share.zero.events
(:require
[taoensso.timbre :refer (refer-timbre)])
(:import
[org.zeromq ZMQ ZMQ$Event ZMQ$Poller]))
(refer-timbre)
(def t (atom nil))
(def flag (atom true))
(def types
{ZMQ/EVENT_CONNECTED :connected
ZMQ/EVENT_CONNECT_DELAYED :delayed
ZMQ/EVENT_DISCONNECTED :disconnected
ZMQ/EVENT_CLOSED :closed
ZMQ/EVENT_CONNECT_RETRIED :retried})
(defn handle-event [socket handler]
(let [event (ZMQ$Event/recv socket ZMQ/EVENT_CONNECTED)]
(if event
(let [e-type (get types (.getEvent event) :unknown)]
(handler e-type event)
(debug "Event" e-type))
(Thread/sleep 1000))))
(defn events-loop [ctx handler]
(let [socket (.socket ctx ZMQ/PAIR)]
(try
(.connect socket "inproc://events")
(info "events loop running")
(while @flag
(handle-event socket handler))
(catch Exception e
(error (.getMessage e) (.getStacktrace e)))
(finally
(.setLinger socket 0)
(.close socket)
(info "events loop is down")))))
(defn start [ctx handler]
(reset! flag true)
(reset! t (future (events-loop ctx handler))))
(defn stop []
(reset! flag false)
(when @t
(reset! t nil)))