Dynamic datasource URL configuration (Reactive)

[KaranAhlawat]

Hi all,

My use case is that the various datasource properties (host, db name, user, password etc) are to be retrieved from AWS Secrets Manager, and so they'd need to be fetched at runtime at application startup. Only then would I be able to construct the datasource URL quarkus should use.

Any ideas on how to go about doing this?

[quarkus-bot[bot]]

/cc @radcortez (config)

[radcortez]

You need to build a ConfigSource that can retrieve the values from the AWS Secrets Manager. I had a look into the Quarkiverse Extension, but they don't seem to have one:
https://github.com/quarkiverse/quarkus-amazon-services/tree/main/secretsmanager

As an example, it needs to something similar to the Vault Extension: https://github.com/quarkiverse/quarkus-vault

[KaranAhlawat]

I ended up solving it by implementing a ConfigSource that creates a SecretMangagerClient and returns the quarkus.datasource.reactive.url. Make sure to return null for properties that you don't intend to return. Also take care to put the ordinal at 0 or something, that worked for me.

[radcortez]

Yes, exactly. Thanks for sharing.