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La función de devolución de llamada no se ejecuta en node.js

Tengo un problema con la ejecución de una función de devolución de llamada. Acabo de crear una función de ayuda para que la utilice el enrutador y para fines internos. La función auxiliar funciona perfectamente para la parte del enrutador (lo intenté con el cartero), pero cuando intento ejecutar la función auxiliar sola, surgen problemas.

 const MyModel= require('../model/MyModel'); const ERR_REASON = { SERVER: 'SERVER_FAULT', DB: 'DB_FAULT', }; const getCommunicationDiagnosticsHelper =function (start, end, cbf) { /* If I execute my callback function here, it works */ MyModel.aggregate([ //aggregator operators are passed here, //I'm not providing the pipeline operators list but they work fine! ]) .allowDiskUse(true) .exec(function (err, results) { // START-This part of code is never executed in my function if (err) { cbf(true,ERR_REASON.DB,null) } try { cbf(false,null,results) } catch (error) { cbf(true,ERR_REASON.SERVER,null) } // END-This part of code is never executed in my function }); };

Esto funciona bien,

 function cb(err,info,data){ console.log({err,info,data}) //supposed everything went well //this refers to `res` this.status(200).json(data) } const getCommunicationDiagnostics = function (req, res, next) { // start and end variables are to be used in aggregation. // parseDate is a simple utility function, const { start, end } = parseDate(req.params.interval); getCommunicationDiagnosticsHelper(start, end, cb.bind(res)) }; //router.js const router=require('express').Router(); router.get('/com_diagnostics',getCommunicationDiagnostics)

Pero esto no. Espero que se ejecute la función de devolución de llamada (como argumento), pero no se está ejecutando.

 getCommunicationDiagnosticsHelper('2021-01-19T19:59:59.999Z','2021-01-20T19:59:59.999Z',(err, info, data) => { //This part of code is never reached! console.log({err,info,data}); })

¿Por qué la función auxiliar completa la ejecución a pesar de que la función de devolución de llamada no se ejecuta?

about 4 years ago · Juan Pablo Isaza
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