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Luke Berndt
259
backend/sys_stats.js
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259
backend/sys_stats.js
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var util = require("util");
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var db = require('./db');
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var stats = {};
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var callTotals = {};
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var errorTotals = {};
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const timePeriod = 15; // in minutes
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var spots = (24*60) / timePeriod; // the number of spots needed to keep track of 24 hours of stats
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function updateActiveSystems() {
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// Go through all of the Syste,s
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db.get().collection('systems', function(err, sysCollection) {
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var cursor = sysCollection.find();
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cursor.each(function(err, item) {
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// go through all the systems
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// While there are still Systems to work with
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if (item) {
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var active = false;
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var callAvg = 0;
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// if you have recieved some calls during that last period, make the system active
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if ((callTotals[item.shortName] != undefined) && (callTotals[item.shortName][0] > 0)) {
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active = true;
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callAvg = callTotals[item.shortName][0] / timePeriod;
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}
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if (err) {
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console.log(item);
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console.log(err);
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}
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//console.log();
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// set the Call Average and Active for the System in the DB
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sysCollection.update({
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shortName: item.shortName
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}, {
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$set: {
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"active": active,
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"callAvg": callAvg
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}
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}, {
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upsert: true
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}, function(err, objects) {
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if (err) {
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console.log("Shortname: " + item.shortName);
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console.warn(err.message);
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}
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//console.log(util.inspect(objects));
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});
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}
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});
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});
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}
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exports.initStats = function() {
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// get the System Stats collection
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db.get().collection('system_stats', function(err, statsCollection) {
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var cursor = statsCollection.find();
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// go through each of the Systems in Stats
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cursor.each(function(err, item) {
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// If you are not at the end...
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if (item) {
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//console.log("Loading stats for: " + item.shortName);
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// Talkgroup Stats
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if (item.talkgroupStats != undefined) {
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stats[item.shortName] = item.talkgroupStats;
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}
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// Error Totals
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if (item.errorTotals != undefined) {
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errorTotals[item.shortName] = item.errorTotals;
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}
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if (item.callTotals != undefined) {
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callTotals[item.shortName] = item.callTotals;
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}
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} else {
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}
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});
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});
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}
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// keeps track of the number of calls that get uploaded with an audio file
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exports.addError = function(call) {
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// if there is no Array associated with the system.
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if (errorTotals[call.shortName] == undefined) {
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errorTotals[call.shortName] = new Array();
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for (var j = 0; j < spots; j++) {
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errorTotals[call.shortName][j] = 0;
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}
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}
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// Add an error to the count for the current period.
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errorTotals[call.shortName][0]++;
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}
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// Keeps track of the number of calls for each talkgroup for a system
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exports.addCall = function(call) {
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// if you haven't started keeping track of stats for the System yet
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if (stats[call.shortName] == undefined) {
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stats[call.shortName] = {};
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}
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var stat = stats[call.shortName];
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// if you haven't started keeping track of Stats for this TG yet...
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if (stat[call.talkgroupNum] == undefined) {
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stat[call.talkgroupNum] = {}
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stat[call.talkgroupNum].calls = 0;
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stat[call.talkgroupNum].totalLen = 0;
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stat[call.talkgroupNum].callCount = new Array();
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stat[call.talkgroupNum].avgLen = new Array();
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for (var j = 0; j < spots; j++) {
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stat[call.talkgroupNum].callCount[j] = 0;
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stat[call.talkgroupNum].avgLen[j] = 0;
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}
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}
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// add to the call count and total length, Call Average is calc by dividing the two...
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stat[call.talkgroupNum].calls++;
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stat[call.talkgroupNum].totalLen += call.len;
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}
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// This gets called when a Time Period is up
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exports.shiftStats = function() {
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db.get().collection('system_stats', function(err, statsCollection) {
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// for all the systems in Error Stats
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for (var shortName in errorTotals) {
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if (stats.hasOwnProperty(shortName)) {
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// Update the DB with Error Stats and Error Totals
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statsCollection.update({
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shortName: shortName
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}, {
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$set: {
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"errorTotals": errorTotals[shortName]
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}
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}, {
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upsert: true
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}, function(err, objects) {
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if (err) {
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console.log("Shortname: " + shortName);
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console.log("errorTotals: " + util.inspect(errorTotals[shortName]));
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console.warn(err.message);
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}
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});
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// move everything back one after updating
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for (var j = spots - 1; j > 0; j--) {
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errorTotals[shortName][j] = errorTotals[shortName][j - 1];
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}
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// reset the first spot back to 0, so you can count the next period
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errorTotals[shortName][0] = 0;
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}
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}
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// figure out the stats
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// for each system in stats
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for (var shortName in stats) {
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var callTotal = 0;
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// if the system is in stats
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if (stats.hasOwnProperty(shortName)) {
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var stat = stats[shortName];
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// for each talkgroup in that systems stats
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for (var talkgroupNum in stat) {
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if (stat.hasOwnProperty(talkgroupNum)) {
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var tg = stat[talkgroupNum];
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var tgHistoryTotal = 0;
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// move the history for that talkgroup back
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for (var j = spots - 1; j > 0; j--) {
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var i = j - 1;
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tgHistoryTotal += tg.callCount[i];
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tg.callCount[j] = tg.callCount[i];
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tg.avgLen[j] = tg.avgLen[i];
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}
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// add to the total for that group
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callTotal += tg.calls;
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// figure out the history for cell 0;
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tg.callCount[0] = tg.calls;
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tgHistoryTotal += tg.calls;
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if (tg.calls > 0) {
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tg.avgLen[0] = Math.floor(tg.totalLen / tg.calls);
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} else {
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tg.avgLen[0] = 0;
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}
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tg.calls = 0;
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tg.totalLen = 0;
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if (tgHistoryTotal ==0 ) {
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// there has been no recent activity on this talkgroup. remove it from the stats.
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delete stat[talkgroupNum];
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}
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}
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}
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// figure out call totals for this shortName/Sys
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if (callTotals[shortName] == undefined) {
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callTotals[shortName] = new Array();
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for (var j = 0; j < spots; j++) {
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callTotals[shortName][j] = 0;
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}
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}
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for (var j = spots - 1; j > 0; j--) {
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callTotals[shortName][j] = callTotals[shortName][j - 1];
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}
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callTotals[shortName][0] = callTotal;
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statsCollection.update({
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shortName: shortName
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}, {
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$set: {
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"talkgroupStats": stats[shortName],
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"callTotals": callTotals[shortName]
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}
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}, {
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upsert: true
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}, function(err, objects) {
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if (err){
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console.log("Shortname: " + shortName);
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console.log("TgStats: " + util.inspect(stats[shortName]));
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console.log("Call Totals: " + util.inspect(callTotals[shortName]));
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console.warn(err.message);
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}
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});
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}
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}
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});
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updateActiveSystems();
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}
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exports.callHistory = function(shortName) {
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return callTotals[shortName];
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}
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exports.tgHistory = function(shortName) {
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return stats[shortName];
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}
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exports.errorTotals = function(shortName) {
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return errorTotals[shortName];
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}
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