metrics

type Client interface {
	// InstrumentDB wraps a sql.DB to collect metrics.
	InstrumentDB(dbName string, db *sql.DB) error

	// InstrumentHandler wraps a http.Handler to collect metrics.
	InstrumentHandler(path string, handler http.HandlerFunc) http.Handler

	// InstrumentRoundTripper is a middleware that wraps the provided http.RoundTripper to observe the request result with default metrics.
	InstrumentRoundTripper(next http.RoundTripper) http.RoundTripper

	// MetricsHandlerFunc returns an http handler function to serve the metrics endpoint.
	MetricsHandlerFunc() http.HandlerFunc

	// IncLogLevelCounter counts the number of errors for each log severity level.
	IncLogLevelCounter(level string)

	// IncErrorCounter increments the number of errors by task, operation and error code.
	IncErrorCounter(task, operation, code string)

	// Close method.
	Close() error
}

type Default struct{}