internal/destregistry/metadata/types.go.

MakePublisherKey creates a unique key for a destination that includes type and config.

NewBaseProvider creates a new base provider with loaded metadata.

ObfuscateValue masks a sensitive value with the following rules: - For strings with length >= 10: show first 4 characters + asterisks for the rest - For strings with length < 10: replace each character with an asterisk.

BaseProvider provides common functionality for all destination providers.

BasePublisher provides common publisher functionality.

DestinationDisplay represents a destination with display-specific fields.

PreprocessDestinationOpts contains options for preprocessing a destination.

Provider interface handles validation and publisher creation.

Registry manages providers, their metadata, and publishers.