Support a DSN for connections

[dkarlovi]

If using this bundle with Symfony Flex, the established approach is to support a DSN for connection strings instead of having each individual part be separate, as is currently the case.

This allow to pass the connection string as one variable instead of several (up to 5) which significantly simplifies secrets management for containerized apps, you just put the entire DSN in the secret.

Here's an example usage by Doctrine Bundle in a Symfony Flex recipe: https://github.com/symfony/recipes/blob/master/doctrine/doctrine-bundle/1.6/config/packages/doctrine.yaml#L18

[Algatux]

@dkarlovi this can be a good idea and an improvement.

[dkarlovi]

@Algatux I think so too.

You could have something like:

influx_db:
    connections:
        udp_conn:
            url: influxdb+udp://user:password@host:4444/database
        http_conn:
            url: influxdb+http://user:password@host:8086/database

Maybe the influxdb prefix is not even needed, what do you think?

[Algatux]

@dkarlovi yes it is not needed IMHO

[dkarlovi]

Would you take a PR for this?

[Algatux]

@dkarlovi a non bc PR will be welcome!