package fromda type Metrics interface { RecordDBDerivedEntryCount(count int64) } type ChainMetrics interface { RecordDBEntryCount(kind string, count int64) } type delegate struct { inner ChainMetrics kind string } func (d *delegate) RecordDBDerivedEntryCount(count int64) { d.inner.RecordDBEntryCount(d.kind, count) } func AdaptMetrics(chainMetrics ChainMetrics, kind string) Metrics { return &delegate{ kind: kind, inner: chainMetrics, } }