NewFanout creates a fanout appendable.

NewInterceptor creates a new Interceptor storage.Appendable.

WithAppendHook returns an InterceptorOption which hooks into calls to Append.

WithExemplarHook returns an InterceptorOption which hooks into calls to AppendExemplar.

WithHistogramHook returns an InterceptorOption which hooks into calls to AppendHistogram.

WithMetadataHook returns an InterceptorOption which hooks into calls to UpdateMetadata.

Fanout supports the default Flow style of appendables since it can go to multiple outputs.

Interceptor is a storage.Appendable which invokes callback functions upon getting data.

InterceptorOption is an option argument passed to NewInterceptor.

NoopMetadataStore implements the MetricMetadataStore interface.