mongodb://.. as a validating url

[c-hartmann]

Would love to see mongodb://.. URI style to validate against 'url' format, as featured in:
http://blog.nodejitsu.com/npmawesome-managing-app-configuration-with-convict/

From what i can see, this might require to use:

    assert(validator.isURL(mongouri, {require_valid_protocol: false}));

instead of using it without the options object.

A custom validator function works fine this way:

     mongo: {
      doc: 'main database',
      bind: {
        format: function check (url) {
          if (!validator.isURL(url,{require_valid_protocol: false})) {
            throw new Error('must be a URL like');
          }
        },
        default: 'mongodb://localhost:27017/'+my_db_name,
        env: "DB_BIND"
      },

[pdehaan]

@c-hartmann If you want to validate that the protocol is "mongodb://", you can use joi's uri() validator:

var Joi = require('joi');

function isMongoUrl(url) {
  var mongodbSchema = Joi.string().uri({
    scheme: ['mongodb']
  });

  Joi.assert(url, mongodbSchema);
}

---

Actually, the validator library supports custom schemes too:

function isMongoUrl(url) {
  if (!validator.isURL(url, {
    protocols: ['mongodb']
  })) {
    throw new Error('must be URL like');
  }
}

[madarche]

I totally agree with @pdehaan suggestions.

We would loose some "validation strictness" if we set {require_valid_protocol: false} by default in convict.

Here is a full working code:

const validator = require('validator');
convict.addFormat({
    name: 'mongo-uri',
    validate: function(val) {
        if (!validator.isURL(val, {protocols: ['mongodb']})) {
            throw new Error('must be a MongoDB URI');
        }
    }
});

var conf = convict({
    uri: {
        doc: 'Mongo URI',
        format: 'mongo-uri',
        default: ''
    }
});
conf.load({uri: 'mongodb://localhost:27017/some_db_name'});
conf.validate({strict: true});

@c-hartmann could you please close this issue?