Glaciar-backend

Aplicación "Glaciar" backend: https://glaciar-org-backend.herokuapp.com/

El front de la app es http://www.glaciar.org

Table of contents

• 1. Usage

  • 1.1 Server Run
  • [1.2 Env config ](#1.2.-env config)
  • [1.3 Heroku Server ](#1.3.-heroku server)
  • 1.4 Docker Build and Use
  • 1.5 Mongo DB
  • 1.6 Linux Comands

• 3. TODO and Next Steps

• 4. Enhacement

• 5. Resources and References

Usage

1. Usage

1.1. Server Run

Run node index.js and navigate to http://localhost:5000/

´´´bash node index.js --help

node index.js --port 4444 --cors 8001 nodemon index.js --port 4444 --cors 8001 ´´´

### 1.2 Env config

Env config:

https://www.npmjs.com/package/dotenv

a Development, utilizo ./.env

$ cat .env GlaciaR_Upsala_backend__MONGODB_MLAB_BASE=upsala-r03 GlaciaR_Upsala_backend__MONGODB_MLAB_USER= GlaciaR_Upsala_backend__MONGODB_MLAB_PASS= GlaciaR_Upsala_backend__MONGODB_MLAB_HOST=localhost:27017

En producción, se setea como variable de Heroku de ambiente https://devcenter.heroku.com/articles/config-vars

1.3.-heroku server

For heroku server

$ heroku login

$ heroku logs   -a glaciar-upsala-backend
$ heroku config -a glaciar-upsala-backend
=== glaciar-upsala-backend Config Vars

$ heroku config:set   GlaciaR_Upsala_backend__CONFIG_HEROKU=avalue
$ heroku config:get   GlaciaR_Upsala_backend__CONFIG_HEROKU
$ heroku config:unset GlaciaR_Upsala_backend__CONFIG_HEROKU

Heroku Specific Port

.listen(process.env.PORT || 5000)

Heroku dynamically assigns your app a port. It will listen to port 5000 locally, and also work on Heroku. See Heroku docs on Node.js: https://devcenter.heroku.com/articles/getting-started-with-nodejs

1.4. Docker Build and Use

Build Doceker

$ docker build .   
$ docker build -t pabloezequiel/upsala-backend .

$ docker run -p 5000:5000    pabloezequiel/upsala-backend
$ docker run -p 5000:5000 -d pabloezequiel/upsala-backend --env-file ~/.env.list 

# Browse to `http://localhost:5000/` 

Use docker

$ docker ps
$ docker logs pabloezequiel/upsala-backend

# Enter the container
$ docker exec -it pabloezequiel/upsala-backend /bin/bash

$ docker run --env-file ~/.env.list ubuntu env | grep VAR

1.5.-mongo-db

Crear indices en la base de datos

db.getCollection('MGSET_02_2010_2015').createIndex({'FECHA_HORA':1})

MongoDB query with Find framework

db.getCollection('MGSET_01_2009_2018')
                        .find({ FECHA_HORA:
                                {
                                    '$gt': ISODate('2015-01-14T21:00:00-03:00'),
                                    '$lt': ISODate('2015-02-14T21:00:00-03:00')
                                }
                              },
                              {"_id":0,"FECHA_HORA":1,"FECHA":1,"HORA":1,"DATASET":1,"AIRQ_CO":1})
                        .sort({"FECHA_HORA":1})
                        .limit(6)
                        .skip(0)
                        */

MongoDB query with Aggregated framework

db.getCollection('MGSET_01_2009_2018')
                        .aggregate([
                            { $match: {
                                FECHA_HORA:
                                {
                                    '$gt': ISODate('2015-01-14T03:00:00-03:00'),
                                    '$lt': ISODate('2015-01-14T12:00:00-03:00')
                                }
                            } },
                            { $limit  :  40 },
                            { $group  :
                                {
                                    _id: "$DATASET",
                                    respuesta : {
                                         $push:  {
                                            FECHA_HORA: "$FECHA_HORA",
                                                 FECHA: "$FECHA",
                                                  HORA: "$HORA",
                                               AIRQ_CO: "$AIRQ_CO",
                                               DATASET: "$DATASET"
                                             
                                         }
                                    } 
                                } 
                             },
                            { $sort   :  {"FECHA_HORA":1}  },
                            { $skip   :  0 }
                        ])

2. Resources and References

• Dockerizing a Node.js web app