MongoDB doesnt support authentication

[cblancog00]

IoT Agent Node Lib version the issue has been seen with

3.4.4

Bound or port used (API interaction)

Other

NGSI version

NGSI-LD

Are you running a container?

Yes, I am using a contaner (Docker, Kubernetes...)

Image type

normal

Expected behaviour you didn't see

I moved this issue from the iotagent-json repo:
telefonicaid/iotagent-json#739

The error was not related to the iotagent, instead it's related to the iotagent-node-lib who is the resposible of the Mongo connection.

When setting a mongo connection with authentication using user and password it fails throwing an Authentication Fail error.
I've been looking throw the code and it seems to be related to the iotagent-node-lib/lib/model/dbConn.js
And it seems to only generates connection strings without autentication

https://github.com/telefonicaid/iotagent-node-lib/blob/master/lib/model/dbConn.js

Test passes, cause an expected result it's bad defined cause in mongo connection strings user and password goes before the host

{
mongodb: {
host: 'example.com',
port: '98765',
db: 'examples',
replicaSet: 'rs0',
user: 'user01',
password: 'pass01',
authSource: 'admin'
},
expected: {
url: 'mongodb://example.com:98765/examples',
options: {
replicaSet: 'rs0',
auth: {
user: 'user01',
password: 'pass01'
},
authSource: 'admin',
useNewUrlParser: true,
useUnifiedTopology: true
}
}
},

The error should be solved easily, checking if the options.auth is present and concat into the url string. Located in th e init function

Unexpected behaviour you saw

No response

Steps to reproduce the problem

No response

Configs

No response

Log output

No response

[fgalan]

PR #1511