spacedeck-open/helpers/redis.js

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2017-04-07 01:29:05 +02:00
'use strict';
const RedisConnection = require('ioredis');
const websockets = require('./websockets');
module.exports = {
connectRedis(){
const redisHost = process.env.REDIS_PORT_6379_TCP_ADDR || 'localhost';
this.connection = new RedisConnection(6379, redisHost);
},
sendMessage(action, model, attributes, channelId) {
const data = JSON.stringify({
channel_id: channelId,
action: action,
model: model,
object: attributes
});
this.connection.publish('updates', data);
},
logIp(ip, cb) {
this.connection.incr("ip_"+ ip, (err, socketCounter) => {
cb();
});
},
rateLimit(namespace, ip, cb) {
const key = "limit_"+ namespace + "_"+ ip;
const redis = this.connection;
redis.get(key, (err, count)=> {
if (count) {
if(count < 150) {
redis.incr(key, (err, newCount) => {
if (newCount==150) {
// limit
}
cb(true);
});
} else {
cb(false);
}
} else {
redis.set(key, 1, (err, count) => {
redis.expire(key, 1800, (err, expResult) => {
cb(true);
});
});
}
});
},
isOnlineInSpace(user, space, cb) {
this.connection.smembers("space_" + space._id.toString(), function(err, list) {
if (err) cb(err);
else {
var users = list.filter(function(item) {
return user._id.toString() === item;
});
cb(null, (users.length > 0));
}
});
}
};