metamaps--metamaps/realtime/node_modules/redis/examples/pub_sub.js

42 lines
1.3 KiB
JavaScript

var redis = require("redis"),
client1 = redis.createClient(), msg_count = 0,
client2 = redis.createClient();
redis.debug_mode = false;
// Most clients probably don't do much on "subscribe". This example uses it to coordinate things within one program.
client1.on("subscribe", function (channel, count) {
console.log("client1 subscribed to " + channel + ", " + count + " total subscriptions");
if (count === 2) {
client2.publish("a nice channel", "I am sending a message.");
client2.publish("another one", "I am sending a second message.");
client2.publish("a nice channel", "I am sending my last message.");
}
});
client1.on("unsubscribe", function (channel, count) {
console.log("client1 unsubscribed from " + channel + ", " + count + " total subscriptions");
if (count === 0) {
client2.end();
client1.end();
}
});
client1.on("message", function (channel, message) {
console.log("client1 channel " + channel + ": " + message);
msg_count += 1;
if (msg_count === 3) {
client1.unsubscribe();
}
});
client1.on("ready", function () {
// if you need auth, do it here
client1.incr("did a thing");
client1.subscribe("a nice channel", "another one");
});
client2.on("ready", function () {
// if you need auth, do it here
});