Package com.maybeitssquid.rotatingsecrets

Interface UpdatableCredential<T>

Type Parameters:

T - the type of the credential (typically String for passwords)

All Known Implementing Classes:

HikariCredentialsUpdater, UcpCredentialsUpdater

public interface UpdatableCredential<T>

Interface for components that need to receive updated credentials when they change.

This interface enables a publish-subscribe pattern for credential rotation. When credentials are rotated (e.g., by reading new values from Kubernetes-mounted secret files), all registered UpdatableCredential implementations are notified with the new values.

Implementations typically wrap connection pools and handle the pool-specific logic for updating credentials and refreshing connections. For example:

• HikariCredentialsUpdater - Updates HikariCP credentials and soft-evicts connections
• UcpCredentialsUpdater - Updates Oracle UCP credentials and refreshes the pool

See Also:

• CredentialsProviderService

Method Summary

Modifier and Type	Method	Description
void	setCredential(String username, T credential)	Updates the credentials used by this component.

Method Details

setCredential

void setCredential(String username,
 T credential)

Updates the credentials used by this component.

Implementations should atomically update their stored credentials and trigger any necessary pool refresh operations. This method may be called from a scheduled background thread, so implementations must be thread-safe.

Parameters:

username - the new username to use for connections

credential - the new credential (password) to use for connections