86 lines
2.2 KiB
JavaScript
86 lines
2.2 KiB
JavaScript
|
var restify = require('restify')
|
||
|
|
, util = require('util')
|
||
|
|
, EventEmitter = require('events').EventEmitter;
|
||
|
|
|
||
|
|
var COSM = function(streams, key) {
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
var streams = streams;
|
||
|
|
var interval = 1000;
|
||
|
|
|
||
|
|
var jsonClient = restify.createJsonClient({
|
||
|
|
url: 'http://api.cosm.com',
|
||
|
|
headers: { 'X-ApiKey': key },
|
||
|
|
version:'*'
|
||
|
|
});
|
||
|
|
|
||
|
|
var recentvalues = {};
|
||
|
|
|
||
|
|
setInterval(function() {
|
||
|
|
|
||
|
|
for(var i=0; i<streams.length; i++) {
|
||
|
|
|
||
|
|
jsonClient.get('/v2/feeds/' + streams[i] + ".json", function(err, req, res, obj) {
|
||
|
|
if(err || obj.datastreams == null) {
|
||
|
|
console.error("error getting stream: " + err)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
for(var i=0; i<obj.datastreams.length; i++) {
|
||
|
|
var dataStream = obj.datastreams[i];
|
||
|
|
if(dataStream.id == null) continue;
|
||
|
|
|
||
|
|
var streamName = dataStream.id;
|
||
|
|
if(streamName.length < 2 && dataStream.tags != null) {
|
||
|
|
streamName = dataStream.tags[0] + streamName;
|
||
|
|
}
|
||
|
|
|
||
|
|
var currentValue = dataStream.current_value;
|
||
|
|
|
||
|
|
if(isNumber(currentValue)) currentValue = parseFloat(currentValue);
|
||
|
|
|
||
|
|
var object = {
|
||
|
|
'stream': obj.id,
|
||
|
|
'feed': dataStream.id,
|
||
|
|
'tags': dataStream.tags,
|
||
|
|
'displayname': streamName,
|
||
|
|
'value': currentValue
|
||
|
|
};
|
||
|
|
|
||
|
|
var address = streams[i] + ":" + dataStream.id;
|
||
|
|
|
||
|
|
if(recentvalues[address] != currentValue) {
|
||
|
|
self.emit('changedvalue', object);
|
||
|
|
}
|
||
|
|
|
||
|
|
self.emit('updatevalue', object);
|
||
|
|
|
||
|
|
|
||
|
|
recentvalues[address] = currentValue;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
}, interval);
|
||
|
|
|
||
|
|
function isNumber(value) {
|
||
|
|
if ((undefined === value) || (null === value)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (typeof value == 'number') {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return !isNaN(value - 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(COSM, EventEmitter);
|
||
|
|
|
||
|
|
module.exports = COSM;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|