Interface IDatabaseConnectionSettingsValidator

Namespace

MailFathom.Infrastructure.Persistence.Connections

Assembly

MailFathom.Infrastructure.dll

Proves that reloaded database connection settings can be used before they are published.

public interface IDatabaseConnectionSettingsValidator

Remarks

Resolving the references in a candidate is not enough on its own. The material behind Persistence:ConnectionString is a connection string, so it has to parse and — when it is what supplies the credential — still carry one; material that resolves but does not parse would pass a reference check, replace the last known good settings, and then fail every connection opened afterwards, which is the outcome the reload contract exists to prevent.

The contract lives in Infrastructure because only the adapter that composed the data source knows which setting currently supplies the credential, and the host that publishes snapshots must not have to model the provider's connection string to find out.

Methods

FindConfigurationFailuresAsync(PostgresConnectionSettings, CancellationToken)

Finds everything that stops a reloaded candidate from being adopted.