citysys-flowserver/flow/thermometer.js

exports.id = 'thermometer';
exports.title = 'Thermometer';
exports.group = 'Worksys';
exports.color = '#5CB36D';
exports.version = '1.0.3';
exports.output = ["red", "white", "blue"];
exports.author = 'Rastislav Kovac';
exports.icon = 'thermometer-three-quarters';

exports.readme = `# Getting temperature values for RVO. In case of LM, you need device address. In case of unipi, evok sends values, in case thermometer is installed`;

const instanceSendTo = {
  debug: 0,
  tb: 1,
  dido_controller: 2
}

//read temperature - frequency
let timeoutMin = 5;//minutes

var path = require('path');
var log4js = require("log4js");

log4js.configure({
  appenders: {
    errLogs: { type: 'file', filename: path.join(__dirname + "/../", 'err.txt') },
    monitorLogs: { type: 'file', compress:true, daysToKeep: 2, maxLogSize: 1048576, backups: 1, keepFileExt: true, filename: path.join(__dirname + "/../", 'monitor.txt') },
    console: { type: 'console' }
  },
  categories: {
    errLogs: { appenders: ['console', 'errLogs'], level: 'error' },
    monitorLogs: { appenders: ['console', 'monitorLogs'], level: 'trace' },
    //another: { appenders: ['console'], level: 'trace' },
    default: { appenders: ['console'], level: 'trace' }
  }
});

const errLogger = log4js.getLogger("errLogs");
const logger = log4js.getLogger();
const monitor = log4js.getLogger("monitorLogs");

//logger.debug("text")
//monitor.info('info');
//errLogger.error("some error");

const { promisifyBuilder, makeMapFromDbResult } = require('./helper/db_helper');
const dbSettings = TABLE("settings");
let temperatureAddress = "";

async function loadSettings()
{
  //todo global FLOW.OMS_edgeName is making problem, so we load it here as well, it should not be  
  let responseSettings = await promisifyBuilder(dbSettings.find());
  temperatureAddress = responseSettings[0]["temperature_adress"];
} 

loadSettings();


exports.install = function(instance) {

  const { exec } = require('child_process');
  const { sendNotification, ERRWEIGHT } = require('./helper/notification_reporter');

  let startRead;
  let dataToTb;
  let counter = 0;

  let edgeName = "";
  

  logger.debug(exports.title, "installed");

  instance.on("close", function(){
    clearInterval(startRead);
  })


  const start = function() {

    try {

      if(FLOW.OMS_controller_type === "unipi")
      {
        clearInterval(startRead);
        return;
      }

      if(temperatureAddress === "") throw "gettemperature: temperatureAddress is not defined";

      logger.debug("FLOW.OMS_temperature_adress", FLOW.OMS_temperature_adress);

      exec(`owread -C ${temperatureAddress}/temperature`, (error, stdout, stderr) => {

        edgeName = FLOW.OMS_edgeName;

        if(edgeName !== "")
        {
          if(error) 
          {

            if(FLOW.OMS_brokerready == undefined)
            {
              logger.debug("gettemparature - FLOW.OMS_brokerready is undefined");

              setTimeout(function(){
                start();
              }, 3000);
  
              return;
            }

            if(FLOW.OMS_brokerready) 
            {
              //sendNotification("start", edgeName, ERRWEIGHT.WARNING, "Thermometer is not responding", {"Error": error}, instanceSendTo.tb, instance, "thermometer");
              sendNotification("start", edgeName, "thermometer_is_not_responding", {}, {"Error": error}, instanceSendTo.tb, instance, "thermometer");
            }

            let status = "NOK";
            dataToTb = {
              [edgeName]: [
                {
                  "ts": Date.now(),
                  "values": {
                    "status": status
                  }
                }
              ]
            }
    
            monitor.info("Thermometer is not responding", error, FLOW.OMS_brokerready);
    
            //  instance.send(instanceSendTo.tb, dataToTb); // poslat stav nok do tb, ak to handluje dido_controller ??
            instance.send(instanceSendTo.dido_controller, {status: "NOK-thermometer"});
          }
          else parseData(stdout);
        }
        else
        {
          monitor.info("gettemperature: edgeName is not defined", FLOW.OMS_edgeName);

          setTimeout(function(){
            start();
          }, 3000);

          return;
        }
       

        //instance.send({"Temp":stdout,"stderr":stderr,"err":error});
      });

    }
    catch(err) {
      errLogger.error(exports.title, err);
    }
  }

  const parseData = function(data) {

    data = parseFloat(data);

    logger.debug("gettemperature", data);

    if(!isNaN(data)) {

      if(counter > 290)
      {
        instance.send(instanceSendTo.debug, "[Get temperature component] - temperature data are comming again from RVO after more than 1 day break");
        
        //sendNotification("parseData", edgeName, ERRWEIGHT.NOTICE, "Thermometer is working again", "", instanceSendTo.tb, instance, "thermometer");
        if(FLOW.OMS_brokerready) sendNotification("parseData", edgeName, "thermometer_is_responding_again", {}, "", instanceSendTo.tb, instance, "thermometer");
      }

      logger.debug("gettemperature", data);
      const values = {
        "temperature": Number(data.toFixed(2)),
        "status": "OK"
      }

      dataToTb = {
        [edgeName]: [
          {
            "ts": Date.now(),
            "values":values          
          }
        ]
      }

      instance.send(instanceSendTo.tb, dataToTb);
      instance.send(instanceSendTo.dido_controller, values);

      counter = 0;

    } else {

      counter++;
      monitor.info("gettemperature err", counter, data);

      //ked je problem 1 den
      let day = 24 * 60 / timeoutMin;
      if ( counter > day && counter < day  + 2 ) {
        //sendNotification("parseData", edgeName, ERRWEIGHT.WARNING, "Thermometer receives invalid data", "", instanceSendTo.tb, instance, "thermometer");
        sendNotification("parseData", edgeName, "thermometer_sends_invalid_data", {}, "", instanceSendTo.tb, instance, "thermometer");

        instance.send(instanceSendTo.debug, "[Get temperature component] - no temperature data from RVO for more than 1 day");
        instance.send(instanceSendTo.dido_controller, {status: "NOK-thermometer"});
      }

    }

  }

  setTimeout(function(){
    start();
  }, 15000);
  
  startRead = setInterval(start, timeoutMin * 1000 * 60);
  
  //testing
  //setInterval(() => {instance.send(instanceSendTo.dido_controller, {status: "NOK-thermometer"})}, 180000);

};